28
Superfund Records Center SITE: ^ f- BREAK: LJ= OTHER: _ *; >',« ''-1 REVISED LONG-TERM GROUNDWATER QUALITY MONITORING PROGRAM and PHASE III VACUUM ENHANCED RECOVERY OF OIL WORK PLAN CMP - O'CONNOR SITE Prepared by: WOODARD & CURRAN INC. Environmental Services 41 Hutchins Drive Portland, ME 04102 Tel.: (207) 774-2112 Date: July 2001

TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

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Page 1: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

Superfund Records Center SITE ^ f-BREAK LJ= OTHER _ gtlaquo -1

REVISED LONG-TERM GROUNDWATER QUALITY MONITORING PROGRAM and PHASE III

VACUUM ENHANCED RECOVERY OF OIL WORK PLAN

CMP - OCONNOR SITE

Prepared by WOODARD amp CURRAN INC Environmental Services 41 Hutchins Drive Portland ME 04102 Tel (207) 774-2112 Date July 2001

A7OOP4ADPI pound Ol IQP AM CORPORATE OFFICES Maine Massachusetts V VJJLJrrLJ OLOUruiMIN New Hampshire Connecticut Illinois Florida Engineering bull Science bull Operations operational offices throughout the us

July 25 2001

Mr Terry Connelly US ENVIRONMENTAL PROTECTION AGENCY 1 Congress Street Suite 1100-HBT Boston MA 02114-2023

RE Revised Long Term Groundwater Quality Monitoring Program and Phase III VER Work Plan OConnor Company Superfund Site Augusta Maine

Dear Terry

Enclosed are three (3) copies of the Revised Long Term Groundwater Quality Monitoring Program and Phase III VER Work Plan for the OConnor site in Augusta Maine Central Maine Power Company and Woodard amp Curran are preparing to initiate the project during the summer of 2001 The new groundwater monitoring wells and piezometers have been installed in the approved locations The project will continue after the work plan has been reviewed and approved by the EPA and DEP

If you have any questions about the enclosed Work Plan please call Jason House or myself at (207)-774shy2112

Sincerely

WOQDARD amp CURRAN INC

llc4y

Eric T Carlson PE C G Senior Project Manager Vice President

JMM 20534003

Enclosure

cc Wilkes Harper (MEDEP) Michael Penzo (The Washington Group) Roy Koster (CMP)

41 Hutchins Drive i Portland Maine 04102 i 207-774-2112 i 207-774-6635 (Fax) i 1-800-426-4262 i wwwwoodardcurrancom

TABLE OF CONTENTS

TABLE OF CONTENTS

PAGE NO

1 INTRODUCTION 1 11 Site Description 1 12 Water Quality Monitoring Plan Background 1 13 Vacuum Enhanced Recovery System Background 2

2 GROUNDWATER MONITORING PROGRAM OVERVIEW 6 21 Monitoring Well Network and Sampling Frequency 6 22 Analytical Program 10 23 Sampling and Data Quality Objectives 10 24 Sampling Equipment and Procedures 12

241 Air Monitoring During Sampling 12 242 Well Access and Measurements 13 243 Modifications to Monitoring Well Network 13 244 Purging and Sampling of Low Yielding Wells 13

25 Residual Oil Monitoring and Recovery 13

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL 15 31 Purpose 15 32 VER Product Recovery Pumping System 15

LIST OF TABLES

Table 1 Summary of Well Installations 4 Table 2 Monitoring Well Construction and Sampling Information 8 Table 3 Groundwater Sampling and Analysis Schedule 9 Table 4 Quality Control Sampling Schedule 12

LIST OF FIGURES

Figure 1 Historic Well Locations 3 Figure 2 Water Quality Monitoring Site Plan 5

LIST OF APPENDICES

APPENDIX A Historic Product Recovery Logs

Woodard amp Cumin (20534003) -ishy 72401

1 INTRODUCTION

This document contains the revised long-term Groundwater Quality Monitoring Program and the Phase III Vacuum Enhanced Recovery (VER) work plan to be performed by Central Maine Power Company (CMP) at the OConnor Company Superfund Site (Site) in Augusta Maine The work plan will be conducted to remove additional residual oil if possible from the Site in support of the TI waiver request and establishes the environmental monitoring program to ensure that the remedial objectives as defined in the ROD are met and that the selective remedy is protective of human health and the environment in the long term The requirement for a program of long-term monitoring of groundwater quality at the Site was originally established by the United States Environmental Protection Agency (EPA) in the Record of Decision (ROD) for the Site dated September 27 1989 The ROD mandated quarterly monitoring of existing and newly installed wells commencing with the initiation of remedial design and for at least three years after completion of remedial activities

11 Site Description

The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was located surrounding Transformer Work Area Two (TWA-II)

12 Water Quality Monitoring Plan Background

In 1996 the original long-term water quality-monitoring program which included sixteen wells was approved by the United States EPA and Maine DEP The original plan was amended in 1997 following the Woodard amp Curran (WampC) Management of Migration (MOM) Additional Investigation Report (January 1997) The 1997 version of the monitoring plan included quarterly sampling at eleven monitoring wells and one observation well and oil monitoring at five wells in the TWA II area (Figure 1) Quarterly monitoring under the 1997 version of the plan was continued through 1999 and then reduced to semi-annual monitoring for 2000 Several monitoring wells and observation wells were removed from the Site in March 1997 in preparation of source control activities A summary of the historic monitoring wells at the Site is included in Table 1 The water quality and groundwater elevation data collected from 1996 to 2000 was used as the basis for the TI waiver request

The revised long-term Water Quality-Monitoring Program (WQMP) described in this document will continue on a semi-annual basis at the Site All of the MOM wells in the existing WQMP as well as several new wells in the TI zone are included in the revised WQMP The revised Water Quality Monitoring Site Plan is shown in Figure 2 The revised monitoring network focuses on the TI zone

The purpose of the revised long-term monitoring in the immediate area of the proposed TI zone is to augment the existing Management of Migration (MOM) water quality-monitoring program in the TI area and to monitor groundwater elevations on the Site Four new wells have been added to the long term WQMP network to monitor groundwater in the western and northern TI zone This area has not been monitored thoroughly since several wells were removed prior to source control The new wells will also be used to monitor the groundwater table elevations and inferred groundwater flow directions across the Site

Woodard amp Curran (20534003) 1 72401

13 Vacuum Enhanced Recovery System Background

The VER system is being proposed for the four bedrock wells and the VER recovery well (RW-101) located in TWA II in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows that contaminants are not migrating in the groundwater and that contamination levels are not increasing PCBs have not been detected in any MOM monitoring wells since the spring of 1996 The groundwater data from the site indicates that contaminants have stagnated in the tillbedrock migration pathway A detailed history of Management of Migration Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997

Woodard amp Curran (205340 03) 2 72401

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

I

8

I io

bull8

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O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

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06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

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2254 2254

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2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

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BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

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22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

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2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

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012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

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112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

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042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

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122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

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Page 2: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

A7OOP4ADPI pound Ol IQP AM CORPORATE OFFICES Maine Massachusetts V VJJLJrrLJ OLOUruiMIN New Hampshire Connecticut Illinois Florida Engineering bull Science bull Operations operational offices throughout the us

July 25 2001

Mr Terry Connelly US ENVIRONMENTAL PROTECTION AGENCY 1 Congress Street Suite 1100-HBT Boston MA 02114-2023

RE Revised Long Term Groundwater Quality Monitoring Program and Phase III VER Work Plan OConnor Company Superfund Site Augusta Maine

Dear Terry

Enclosed are three (3) copies of the Revised Long Term Groundwater Quality Monitoring Program and Phase III VER Work Plan for the OConnor site in Augusta Maine Central Maine Power Company and Woodard amp Curran are preparing to initiate the project during the summer of 2001 The new groundwater monitoring wells and piezometers have been installed in the approved locations The project will continue after the work plan has been reviewed and approved by the EPA and DEP

If you have any questions about the enclosed Work Plan please call Jason House or myself at (207)-774shy2112

Sincerely

WOQDARD amp CURRAN INC

llc4y

Eric T Carlson PE C G Senior Project Manager Vice President

JMM 20534003

Enclosure

cc Wilkes Harper (MEDEP) Michael Penzo (The Washington Group) Roy Koster (CMP)

41 Hutchins Drive i Portland Maine 04102 i 207-774-2112 i 207-774-6635 (Fax) i 1-800-426-4262 i wwwwoodardcurrancom

TABLE OF CONTENTS

TABLE OF CONTENTS

PAGE NO

1 INTRODUCTION 1 11 Site Description 1 12 Water Quality Monitoring Plan Background 1 13 Vacuum Enhanced Recovery System Background 2

2 GROUNDWATER MONITORING PROGRAM OVERVIEW 6 21 Monitoring Well Network and Sampling Frequency 6 22 Analytical Program 10 23 Sampling and Data Quality Objectives 10 24 Sampling Equipment and Procedures 12

241 Air Monitoring During Sampling 12 242 Well Access and Measurements 13 243 Modifications to Monitoring Well Network 13 244 Purging and Sampling of Low Yielding Wells 13

25 Residual Oil Monitoring and Recovery 13

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL 15 31 Purpose 15 32 VER Product Recovery Pumping System 15

LIST OF TABLES

Table 1 Summary of Well Installations 4 Table 2 Monitoring Well Construction and Sampling Information 8 Table 3 Groundwater Sampling and Analysis Schedule 9 Table 4 Quality Control Sampling Schedule 12

LIST OF FIGURES

Figure 1 Historic Well Locations 3 Figure 2 Water Quality Monitoring Site Plan 5

LIST OF APPENDICES

APPENDIX A Historic Product Recovery Logs

Woodard amp Cumin (20534003) -ishy 72401

1 INTRODUCTION

This document contains the revised long-term Groundwater Quality Monitoring Program and the Phase III Vacuum Enhanced Recovery (VER) work plan to be performed by Central Maine Power Company (CMP) at the OConnor Company Superfund Site (Site) in Augusta Maine The work plan will be conducted to remove additional residual oil if possible from the Site in support of the TI waiver request and establishes the environmental monitoring program to ensure that the remedial objectives as defined in the ROD are met and that the selective remedy is protective of human health and the environment in the long term The requirement for a program of long-term monitoring of groundwater quality at the Site was originally established by the United States Environmental Protection Agency (EPA) in the Record of Decision (ROD) for the Site dated September 27 1989 The ROD mandated quarterly monitoring of existing and newly installed wells commencing with the initiation of remedial design and for at least three years after completion of remedial activities

11 Site Description

The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was located surrounding Transformer Work Area Two (TWA-II)

12 Water Quality Monitoring Plan Background

In 1996 the original long-term water quality-monitoring program which included sixteen wells was approved by the United States EPA and Maine DEP The original plan was amended in 1997 following the Woodard amp Curran (WampC) Management of Migration (MOM) Additional Investigation Report (January 1997) The 1997 version of the monitoring plan included quarterly sampling at eleven monitoring wells and one observation well and oil monitoring at five wells in the TWA II area (Figure 1) Quarterly monitoring under the 1997 version of the plan was continued through 1999 and then reduced to semi-annual monitoring for 2000 Several monitoring wells and observation wells were removed from the Site in March 1997 in preparation of source control activities A summary of the historic monitoring wells at the Site is included in Table 1 The water quality and groundwater elevation data collected from 1996 to 2000 was used as the basis for the TI waiver request

The revised long-term Water Quality-Monitoring Program (WQMP) described in this document will continue on a semi-annual basis at the Site All of the MOM wells in the existing WQMP as well as several new wells in the TI zone are included in the revised WQMP The revised Water Quality Monitoring Site Plan is shown in Figure 2 The revised monitoring network focuses on the TI zone

The purpose of the revised long-term monitoring in the immediate area of the proposed TI zone is to augment the existing Management of Migration (MOM) water quality-monitoring program in the TI area and to monitor groundwater elevations on the Site Four new wells have been added to the long term WQMP network to monitor groundwater in the western and northern TI zone This area has not been monitored thoroughly since several wells were removed prior to source control The new wells will also be used to monitor the groundwater table elevations and inferred groundwater flow directions across the Site

Woodard amp Curran (20534003) 1 72401

13 Vacuum Enhanced Recovery System Background

The VER system is being proposed for the four bedrock wells and the VER recovery well (RW-101) located in TWA II in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows that contaminants are not migrating in the groundwater and that contamination levels are not increasing PCBs have not been detected in any MOM monitoring wells since the spring of 1996 The groundwater data from the site indicates that contaminants have stagnated in the tillbedrock migration pathway A detailed history of Management of Migration Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997

Woodard amp Curran (205340 03) 2 72401

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

I

8

I io

bull8

o BO

E Q

O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

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1 2050

2 200 0

1950

1900 shy

1350 bull

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1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

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2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

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2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

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Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

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Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

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113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

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Page 3: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

TABLE OF CONTENTS

TABLE OF CONTENTS

PAGE NO

1 INTRODUCTION 1 11 Site Description 1 12 Water Quality Monitoring Plan Background 1 13 Vacuum Enhanced Recovery System Background 2

2 GROUNDWATER MONITORING PROGRAM OVERVIEW 6 21 Monitoring Well Network and Sampling Frequency 6 22 Analytical Program 10 23 Sampling and Data Quality Objectives 10 24 Sampling Equipment and Procedures 12

241 Air Monitoring During Sampling 12 242 Well Access and Measurements 13 243 Modifications to Monitoring Well Network 13 244 Purging and Sampling of Low Yielding Wells 13

25 Residual Oil Monitoring and Recovery 13

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL 15 31 Purpose 15 32 VER Product Recovery Pumping System 15

LIST OF TABLES

Table 1 Summary of Well Installations 4 Table 2 Monitoring Well Construction and Sampling Information 8 Table 3 Groundwater Sampling and Analysis Schedule 9 Table 4 Quality Control Sampling Schedule 12

LIST OF FIGURES

Figure 1 Historic Well Locations 3 Figure 2 Water Quality Monitoring Site Plan 5

LIST OF APPENDICES

APPENDIX A Historic Product Recovery Logs

Woodard amp Cumin (20534003) -ishy 72401

1 INTRODUCTION

This document contains the revised long-term Groundwater Quality Monitoring Program and the Phase III Vacuum Enhanced Recovery (VER) work plan to be performed by Central Maine Power Company (CMP) at the OConnor Company Superfund Site (Site) in Augusta Maine The work plan will be conducted to remove additional residual oil if possible from the Site in support of the TI waiver request and establishes the environmental monitoring program to ensure that the remedial objectives as defined in the ROD are met and that the selective remedy is protective of human health and the environment in the long term The requirement for a program of long-term monitoring of groundwater quality at the Site was originally established by the United States Environmental Protection Agency (EPA) in the Record of Decision (ROD) for the Site dated September 27 1989 The ROD mandated quarterly monitoring of existing and newly installed wells commencing with the initiation of remedial design and for at least three years after completion of remedial activities

11 Site Description

The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was located surrounding Transformer Work Area Two (TWA-II)

12 Water Quality Monitoring Plan Background

In 1996 the original long-term water quality-monitoring program which included sixteen wells was approved by the United States EPA and Maine DEP The original plan was amended in 1997 following the Woodard amp Curran (WampC) Management of Migration (MOM) Additional Investigation Report (January 1997) The 1997 version of the monitoring plan included quarterly sampling at eleven monitoring wells and one observation well and oil monitoring at five wells in the TWA II area (Figure 1) Quarterly monitoring under the 1997 version of the plan was continued through 1999 and then reduced to semi-annual monitoring for 2000 Several monitoring wells and observation wells were removed from the Site in March 1997 in preparation of source control activities A summary of the historic monitoring wells at the Site is included in Table 1 The water quality and groundwater elevation data collected from 1996 to 2000 was used as the basis for the TI waiver request

The revised long-term Water Quality-Monitoring Program (WQMP) described in this document will continue on a semi-annual basis at the Site All of the MOM wells in the existing WQMP as well as several new wells in the TI zone are included in the revised WQMP The revised Water Quality Monitoring Site Plan is shown in Figure 2 The revised monitoring network focuses on the TI zone

The purpose of the revised long-term monitoring in the immediate area of the proposed TI zone is to augment the existing Management of Migration (MOM) water quality-monitoring program in the TI area and to monitor groundwater elevations on the Site Four new wells have been added to the long term WQMP network to monitor groundwater in the western and northern TI zone This area has not been monitored thoroughly since several wells were removed prior to source control The new wells will also be used to monitor the groundwater table elevations and inferred groundwater flow directions across the Site

Woodard amp Curran (20534003) 1 72401

13 Vacuum Enhanced Recovery System Background

The VER system is being proposed for the four bedrock wells and the VER recovery well (RW-101) located in TWA II in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows that contaminants are not migrating in the groundwater and that contamination levels are not increasing PCBs have not been detected in any MOM monitoring wells since the spring of 1996 The groundwater data from the site indicates that contaminants have stagnated in the tillbedrock migration pathway A detailed history of Management of Migration Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997

Woodard amp Curran (205340 03) 2 72401

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

I

8

I io

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O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

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Page 4: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

TABLE OF CONTENTS

PAGE NO

1 INTRODUCTION 1 11 Site Description 1 12 Water Quality Monitoring Plan Background 1 13 Vacuum Enhanced Recovery System Background 2

2 GROUNDWATER MONITORING PROGRAM OVERVIEW 6 21 Monitoring Well Network and Sampling Frequency 6 22 Analytical Program 10 23 Sampling and Data Quality Objectives 10 24 Sampling Equipment and Procedures 12

241 Air Monitoring During Sampling 12 242 Well Access and Measurements 13 243 Modifications to Monitoring Well Network 13 244 Purging and Sampling of Low Yielding Wells 13

25 Residual Oil Monitoring and Recovery 13

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL 15 31 Purpose 15 32 VER Product Recovery Pumping System 15

LIST OF TABLES

Table 1 Summary of Well Installations 4 Table 2 Monitoring Well Construction and Sampling Information 8 Table 3 Groundwater Sampling and Analysis Schedule 9 Table 4 Quality Control Sampling Schedule 12

LIST OF FIGURES

Figure 1 Historic Well Locations 3 Figure 2 Water Quality Monitoring Site Plan 5

LIST OF APPENDICES

APPENDIX A Historic Product Recovery Logs

Woodard amp Cumin (20534003) -ishy 72401

1 INTRODUCTION

This document contains the revised long-term Groundwater Quality Monitoring Program and the Phase III Vacuum Enhanced Recovery (VER) work plan to be performed by Central Maine Power Company (CMP) at the OConnor Company Superfund Site (Site) in Augusta Maine The work plan will be conducted to remove additional residual oil if possible from the Site in support of the TI waiver request and establishes the environmental monitoring program to ensure that the remedial objectives as defined in the ROD are met and that the selective remedy is protective of human health and the environment in the long term The requirement for a program of long-term monitoring of groundwater quality at the Site was originally established by the United States Environmental Protection Agency (EPA) in the Record of Decision (ROD) for the Site dated September 27 1989 The ROD mandated quarterly monitoring of existing and newly installed wells commencing with the initiation of remedial design and for at least three years after completion of remedial activities

11 Site Description

The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was located surrounding Transformer Work Area Two (TWA-II)

12 Water Quality Monitoring Plan Background

In 1996 the original long-term water quality-monitoring program which included sixteen wells was approved by the United States EPA and Maine DEP The original plan was amended in 1997 following the Woodard amp Curran (WampC) Management of Migration (MOM) Additional Investigation Report (January 1997) The 1997 version of the monitoring plan included quarterly sampling at eleven monitoring wells and one observation well and oil monitoring at five wells in the TWA II area (Figure 1) Quarterly monitoring under the 1997 version of the plan was continued through 1999 and then reduced to semi-annual monitoring for 2000 Several monitoring wells and observation wells were removed from the Site in March 1997 in preparation of source control activities A summary of the historic monitoring wells at the Site is included in Table 1 The water quality and groundwater elevation data collected from 1996 to 2000 was used as the basis for the TI waiver request

The revised long-term Water Quality-Monitoring Program (WQMP) described in this document will continue on a semi-annual basis at the Site All of the MOM wells in the existing WQMP as well as several new wells in the TI zone are included in the revised WQMP The revised Water Quality Monitoring Site Plan is shown in Figure 2 The revised monitoring network focuses on the TI zone

The purpose of the revised long-term monitoring in the immediate area of the proposed TI zone is to augment the existing Management of Migration (MOM) water quality-monitoring program in the TI area and to monitor groundwater elevations on the Site Four new wells have been added to the long term WQMP network to monitor groundwater in the western and northern TI zone This area has not been monitored thoroughly since several wells were removed prior to source control The new wells will also be used to monitor the groundwater table elevations and inferred groundwater flow directions across the Site

Woodard amp Curran (20534003) 1 72401

13 Vacuum Enhanced Recovery System Background

The VER system is being proposed for the four bedrock wells and the VER recovery well (RW-101) located in TWA II in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows that contaminants are not migrating in the groundwater and that contamination levels are not increasing PCBs have not been detected in any MOM monitoring wells since the spring of 1996 The groundwater data from the site indicates that contaminants have stagnated in the tillbedrock migration pathway A detailed history of Management of Migration Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997

Woodard amp Curran (205340 03) 2 72401

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

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TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

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^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

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2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

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IN

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22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

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022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

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2200 shyQ

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1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

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Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

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1900

1850

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Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

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1 2050

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1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

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2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

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2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

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22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

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2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

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rax r- jm ^Z I fl 2094

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Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

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013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

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2159 2150 2100 2039 2031

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

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Date

Page 5: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

1 INTRODUCTION

This document contains the revised long-term Groundwater Quality Monitoring Program and the Phase III Vacuum Enhanced Recovery (VER) work plan to be performed by Central Maine Power Company (CMP) at the OConnor Company Superfund Site (Site) in Augusta Maine The work plan will be conducted to remove additional residual oil if possible from the Site in support of the TI waiver request and establishes the environmental monitoring program to ensure that the remedial objectives as defined in the ROD are met and that the selective remedy is protective of human health and the environment in the long term The requirement for a program of long-term monitoring of groundwater quality at the Site was originally established by the United States Environmental Protection Agency (EPA) in the Record of Decision (ROD) for the Site dated September 27 1989 The ROD mandated quarterly monitoring of existing and newly installed wells commencing with the initiation of remedial design and for at least three years after completion of remedial activities

11 Site Description

The OConnor Site is located along US Route 17 near the eastern boundary of the city limits of Augusta Maine Previous salvage and transformer recycling activities by the F OConnor Company at the Site led to uncontrolled releases of oil containing polychlorinated biphenyls (PCBs) and volatile organic compounds The source area prior to remediation activities completed in 1997 covered approximately nine acres within the 23-acre Site and was situated on the crest of a low ridge aligned parallel to the west branch of Riggs Brook The source area was located surrounding Transformer Work Area Two (TWA-II)

12 Water Quality Monitoring Plan Background

In 1996 the original long-term water quality-monitoring program which included sixteen wells was approved by the United States EPA and Maine DEP The original plan was amended in 1997 following the Woodard amp Curran (WampC) Management of Migration (MOM) Additional Investigation Report (January 1997) The 1997 version of the monitoring plan included quarterly sampling at eleven monitoring wells and one observation well and oil monitoring at five wells in the TWA II area (Figure 1) Quarterly monitoring under the 1997 version of the plan was continued through 1999 and then reduced to semi-annual monitoring for 2000 Several monitoring wells and observation wells were removed from the Site in March 1997 in preparation of source control activities A summary of the historic monitoring wells at the Site is included in Table 1 The water quality and groundwater elevation data collected from 1996 to 2000 was used as the basis for the TI waiver request

The revised long-term Water Quality-Monitoring Program (WQMP) described in this document will continue on a semi-annual basis at the Site All of the MOM wells in the existing WQMP as well as several new wells in the TI zone are included in the revised WQMP The revised Water Quality Monitoring Site Plan is shown in Figure 2 The revised monitoring network focuses on the TI zone

The purpose of the revised long-term monitoring in the immediate area of the proposed TI zone is to augment the existing Management of Migration (MOM) water quality-monitoring program in the TI area and to monitor groundwater elevations on the Site Four new wells have been added to the long term WQMP network to monitor groundwater in the western and northern TI zone This area has not been monitored thoroughly since several wells were removed prior to source control The new wells will also be used to monitor the groundwater table elevations and inferred groundwater flow directions across the Site

Woodard amp Curran (20534003) 1 72401

13 Vacuum Enhanced Recovery System Background

The VER system is being proposed for the four bedrock wells and the VER recovery well (RW-101) located in TWA II in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows that contaminants are not migrating in the groundwater and that contamination levels are not increasing PCBs have not been detected in any MOM monitoring wells since the spring of 1996 The groundwater data from the site indicates that contaminants have stagnated in the tillbedrock migration pathway A detailed history of Management of Migration Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997

Woodard amp Curran (205340 03) 2 72401

Sisect J

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

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o BO

E Q

O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

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031798 2159 2150 2100 2039 203 1

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060898 2159 2150 2100 2039 203 1

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123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

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Page 6: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

13 Vacuum Enhanced Recovery System Background

The VER system is being proposed for the four bedrock wells and the VER recovery well (RW-101) located in TWA II in an attempt to capture and collect as much residual oil in the bedrock and overburden as possible prior to proceeding with the TI request The TI waiver request is based upon historic groundwater quality data that shows that contaminants are not migrating in the groundwater and that contamination levels are not increasing PCBs have not been detected in any MOM monitoring wells since the spring of 1996 The groundwater data from the site indicates that contaminants have stagnated in the tillbedrock migration pathway A detailed history of Management of Migration Investigations and remedial actions is included in the Comprehensive Evaluation dated 1997

Woodard amp Curran (205340 03) 2 72401

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

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TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

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^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

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8

7

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Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

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1900 -f

185 0 rshy oo

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30

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11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

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2

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Date

Page 7: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

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2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

I

8

I io

bull8

o BO

E Q

O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

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060898 2159 2150 2100 2039 203 1

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012399 4 none 2159 2150 2100 2039 2031 2128

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

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Page 8: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

2 GROUNDWATER QUALITY MONITORING PROGRAM OVERVIEW

The revised long-term groundwater-monitoring plan described in this document will follow the standard operating procedures and sampling methodology contained in the MOM Sampling and Analysis Plan (SAP) The SAP was written in 1996 for the MOM Groundwater Monitoring Program at the Site The SAP consists of three supporting documents

The Field Sampling Plan (FSP) The Health and Safety Plan (HSP) The Quality Assurance Project Plan (QAPP)

The FSP presented in the SAP contains the logistics of and specific sampling and data gathering procedures for the performance of the long-term Groundwater Monitoring Programs field activities The FSP was developed according to the EPA guidance document Guidance for Conducting Remedial Investigations and Feasibility Studies under CERCLA October 1988 Interim Final (EPA540Gshy89004) and A Compendium of Superfund Field Operations Methods (Office of Solid Waste and Emergency Response Directive 93550-12 EPA540P-87001) Additionally the specific low flow sampling procedures contained in the field sampling procedures were developed to be consistent with the MEDEP memorandum on Low Flow Purging and Sampling Procedures dated January 10 1996 The sampling procedures for low yielding wells were amended in 1998 The special requirements for low yielding wells are described in Section 553 of the FSP

The HSP included in Appendix B of the SAP contains emergency and non-emergency information as well as health and safety protocols that will be followed to protect the health and safety of Site personnel during the performance of the long-term Groundwater Monitoring Program The HSP was modified following source control The health and safety procedures contained in the HSP have proven to be protective of on-site workers

The original QAPP contains the site-specific objectives policies organizations functional activities and specific Quality AssuranceQuality Control (QAQC) procedures and acceptance criteria needed to achieve the data quality objectives of the Site Groundwater Monitoring Program The QAPP is Volume II of II of the MOM Groundwater Monitoring Program SAP

The SAP QAPP and HASP have been amended several times since 1996 in order to keep them current with activities taking place on the site For example in 1999 the EPA changed the method for PCB analysis from 8081 to 8082 The SAP and QAPP were amended at that time to document the change CMP will review these documents to assure that the documents are consistent with current EPA guidance The installation of new wells and piezometers and the implementation of the VER system will be conducted prior to the review and possible revision to the SAP documents

21 Monitoring Well Network and Sampling Frequency

The wells included in the long-term monitoring program have been installed at locations specifically chosen to delineate potential groundwater contamination pathways and to provide regional groundwater monitoring locations both up gradient and down gradient of identified contaminated source areas

Three of the original 500 series wells (MW-501 MW-502 and MW-503) and six additional wells MWshy507A MW-508B MW-104B MW-106A MW-106B and OW-201B are located down gradient of the groundwater flow emanating from TWA-II Monitoring wells MW-101A and MW-101B are up gradient wells located to the northeast of TWA-II To augment the previous monitoring well network three new wells MW-509A MW-510A MW-511A and one existing well MW-505 are being added to the

Woodard amp Curran (20534003) 6 72401

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

I

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TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 9: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

monitoring network Wells MW-509A and MW-510A were originally proposed as small diameter piezometers The larger diameter monitoring wells are proposed instead in case oil recovery is necessary The three new wells will be installed to monitor the northern and western boundary of the TI zone The locations of all existing and proposed monitoring wells in the revised water quality-monitoring plan are shown on Figure 2 The monitoring wells will be used for both water quality data and water table elevation data These wells are intended to monitor the till bedrock migration pathway along the bedrock surface The new wells were installed on July 16 and 17 2001 on top of bedrock and screened the saturated thickness of unconsolidated soils

A summary of monitoring well construction and sampling information for the monitoring wells is provided in Table 2 The boring logs and well construction details for the existing wells are included in Appendix A of the MOM SAP The frequency of sampling and product monitoring is summarized In Table 3

Monitoring wells will be sampled as follows

bull Twelve wells will be sampled semi-annually in the spring and fall (see Table 3) Well sampling locations for semi-annual sampling are based on relative proximity to known contaminated areas ie the transformer work areas (TWAs)

bull Four additional groundwater monitoring wells will be sampled on an annual basis in the spring

bull Five wells and one piezometer will continue to be used to monitor oil levels and recover oil when necessary on a monthly basis These wells will also be included in the Phase III VER program The details of the oil monitoring and oil removal are included in Section 25 of this work plan or Section ToftheFSP

bull Sampling locations and frequencies will continue to be evaluated on an annual basis based on review of the analytical and hydrologic data obtained during the previous sampling rounds

Woodard amp Cumin (205340 03) 7 72401

I

8

I io

bull8

o BO

E Q

O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

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^ O mdash laquomdash Waer

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1900 -f

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217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

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3

2

1 t^shy

r

y 0

Date

Page 10: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

I

8

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O

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

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-Waer 1950

1900

1850

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Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

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1 2050

2 200 0

1950

1900 shy

1350 bull

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1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

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_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

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2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

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Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

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2200 i

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Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

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113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

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2

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Date

Page 11: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

TABLE 3 GROUNDWATER SAMPLING AND ANALYSIS SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Monitoring Well MW-101A

MW-101B

MW-104B

MW-105B

MW-106A

MW-106B

OW-201B

OW-202B

OW-204B

OW-301B

OW-302B

RW-101

MW-501

MW-502

MW-503

MW-505

MW-507A

MW-508B

MW-509A

MW-510A

MW-511A

TOTAL WELLS SAMPLED

NOTES

^Spring Fall X -X -X X

X -X X

X X

X X

PR PR

PR PR

PR PR

PR PR

PR PR

X -

X X

X X

X -X X

X X

X X

X X

X X

16 11

PR - Oil monitoring and product recovery on a monthly basis only - Installed July 16 and 17 2001 at approximate locations shown in Figure 2

Woodard amp Curran (205340 03) 72401

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 12: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

22 Analytical Program

The proposed analytical methods are the same methods that are identified in the QAPP (Volume II of II of the MOM Groundwater Monitoring Program SAP) EPA-referenced methods will be used in the organic analyses of PCBs (Method 8082) and target VOCs (Method 8260) Groundwater and QC samples will be submitted for referenced method analyses to include the following chemical constituents

bull Seven (7) aromatic and chlorinated VOCs benzene chlorobenzene 12-dichlorobenzene 13-dichlorobenzene 14-dichlorobenzene 123-trichlorobenzene 124-trichlorobenzene

bull Seven (7) polychlorinated biphenyl Aroclors PCB Aroclors 1016 1221 1232 1242 1248 1254 1260

Samples will be collected in laboratory-provided glassware The VOC samples will be preserved to a pH of less than or equal to 2 with precharged hydrochloric (HCL) acid in the sample container (VOC vials)

23 Sampling and Data Quality Objectives

The data obtained from the long-term Groundwater Monitoring Program at the Site will be used to

bull Evaluate groundwater quality on an annual and semi-annual basis

bull Evaluate compliance of the Site groundwater quality with the cleanup standards for target chemicals established in the ROD

bull Determine groundwater elevations and inferred groundwater flow directions on the Site and

bull Determine if groundwater contamination is migrating on the Site

Four levels of data quality (defined by measures of precision accuracy representativeness completeness and comparability) for remedial investigations and remediation activities have been designated by the EPA (Data Quality Objectives for Remedial Response Activities dated March 1987) Laboratory data generated for the Site Groundwater Monitoring Program will be consistent with Level III data quality Level III data are compound specific quantitative with measured precision and accuracy and traceable Components of the laboratory Level III deliverables reporting package are established in the QAPP In addition QAQC issues for the field program are discussed in the QAPP

The sampling procedures to be used are provided in Section 5 of the FSP When practicable sampling will proceed from clean wells to contaminated wells The depth to groundwater will be measured at each well prior to sampling The total depth of the well will be measured following the sample collection With this information the static well water volume and amount of siltation will be calculated for each well In addition the relative groundwater table elevations will be documented

Woodard amp Curran (20534003) 10 72401

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

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1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 13: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

A primary objective for the long-term samplingmonitoring program is consistency of procedure and method The physical and chemical groundwater data collected over the course of the monitoring program must be to the extent possible representative and comparable from year to year Strict adherence to the field sampling organization and procedures presented in the MOM FSP and its appendices and to the protocols established in the QAPP is necessary to achieve the data quality objectives of the Groundwater Monitoring Program

The QAQC sampling schedule has been modified slightly and the new QC requirements are described in Table 4 The number of duplicates has changed from one duplicate sample per 10 samples to one duplicate per sample event There is new requirement of one temperature blank per sample cooler during shipment to the laboratory

QAQC samples of the field program will include VOC trip blanks VOC preservation checks field duplicate samples field blanks temperature blanks and matrix spikematrix spike duplicate analyses Documentation of QC for laboratory-supplied glassware will be provided by the laboratory A trip blank will accompany a set of VOC sample ware to a well location during sampling and will remain with the associated samples during the trip to the laboratory for analysis Every cooler shipment of VOC samples will contain one such trip blank Field duplicates and matrix spikematrix spike duplicate samples will be collected at a frequency of one per sample event The number of field duplicate and matrix evaluation samples to be submitted each event is less than would be used for infrequent or singular sampling events

Sampling results of the monitoring program will build a water quality database for each well location that shall provide QCaberrant result checks through trend analysis A summary of the frequency of collection and submittal of Groundwater Monitoring Program QC samples is presented in Table 4 During each sampling event one equipment blank will be collected from representative internal non-dedicated equipment to verify that decontamination is adequately performed Equipment blanks for dedicated equipment will not be necessary since the equipment will remain in the well All blank water used in this program shall be free of the target analyte(s)

Woodard amp Curran (205340 03) 11 72401

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

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V -Avshy^N

v-^v

^sV A

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t ] a

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TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

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8 laquo Ground V

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5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

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Q

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Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 14: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

TABLE 4 QUALITY CONTROL SAMPLING SCHEDULE

Groundwater Monitoring Program OConnor Company Superfund Site

Augusta Maine

Quality Control Type 4 _i llaquoraquo

Parameters bull

Aromatic aml Chlorinated Polychlorlnated biphenvls

bullshy i j shy VolaSltprganics SW-846 8082

- v shy J^fJ60

bull bull ~j

Field Duplicate 1 per sampling round 1 per sampling round

4 times per Quarter VGA Preservative 2 overburden well not applicable

Check and 2 bedrock well

1 per cooler shipped Trip Blank containing VOA not applicable

Samples

Internal Non-dedicated 1 per sampling round 1 per sampling round Equipment Blanks

Temoerature Blank 1 oer samole cooler 1 Der sample cooler

All samples will be analyzed for the following

Aromatic and chlorinated volatile organic target compounds Polychlonnated biphenyl target aroclors benzene Aroclor 1016 chlorobenzene Aroclorl221 12-dichlorobenzene Aroclor 1232 13-dichlorobenzene Aroclor 1242 14-dichIorobenzene Aroclor 1248 123-tnchlorobenzene Aroclor 1254 124-tnchlorobenzene Aroclor 1260

24 Sampling Equipment and Procedures

The field sampling procedures are well established at the Site Sampling of groundwater monitoring wells for the Groundwater Monitoring Program will be performed using the procedures outlined in Chapter 5 of the MOM FSP A list of the equipment requirements for the sampling program is provided in Table 3 of the FSP The list of equipment is to be updated as field experience necessitates

241 Air Monitoring During Sampling

Ambient air monitoring will be performed regularly on-site during the groundwater-samplmg program and VER program for health and safety purposes Ambient air above the open wellhead will be monitored for VOCs with a portable photoionization detector (PID) meter or flame ionization detector

Woodard amp Curran (205340 03) 12 72401

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

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c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

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BSSaiO I (in)

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1900 -f

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217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

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rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 15: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

(FID) Additionally breathing zone monitoring will also be conducted regularly Air monitoring for VOCs will be performed in accordance with the requirements specified in the HSP provided in Appendix B of the MOM SAP The PID or FID shall be calibrated in accordance with the HSP (Section 61)

242 Well Access and Measurements

Sampling of groundwater wells during each quarter will begin with up gradient or background wells including wells outside the fenced portion of the Site and will proceed to wells in which increasing chemical concentrations have been detected Monitoring well locations are shown in Figure 2 The analytical results from the most recent sampling event of each well will be used to determine the sampling order when practicable Measurements made during sampling will be recorded on the Monitoring Well Sampling Record forms (OConnor Groundwater Monitoring ProgramFL6) The sample form is in Appendix C of the QAPP All completed well sampling record forms will be included with monitoring reports

When obtaining groundwater elevation data during the semi-annual sampling all groundwater monitoring wells across the site will be measured whether they are sampled or not

243 Modifications to Monitoring Well Network

The MEDEP and EPA will be notified in the event that a well may need to be removed from the monitoring network due to excessive silting of the well or other observed damage If a well is damaged and cannot be repaired it will be replaced

244 Purging and Sampling of Low Yielding Wells

Special sampling methods for low yielding wells have been instituted at the Site The methodology for sampling low yielding wells is described in Section 553 of the FSP

25 Residual Oil Monitoring and Recovery

This section describes the procedures for dealing with the wells on the site in the area where residual oil has been observed in previous monitoring events The procedures at these wells include measuring the oil thickness on a regular basis (Table 3) removing accumulated oil on a regular basis and monitoring the recovery of the oil in the wells after oil removal These wells include OW-202B OW-204B OWshy301B OW-302B UM-1 and RW-101 Groundwater samples will not be collected from these wells because of the effects on these wells by the floating oil

The historic oil level monitoring data logs for the Site are included in Appendix A The monitoring logs in Appendix A will be used to record future oil monitoring data The logs show the relative amount of oil that accumulates in each well over time As is shown considerably more oil was taken out of the wells immediately after the pumping tests in 1992 In general the relatively small accumulations of oil that have occurred since source control have been associated with significant water table fluctuations

After checking the well and site plan for proper identification the depth to the top of the oil and the thickness of the oil are measured with a decontaminated oilwater interface probe and the thickness and volume of oil are calculated

The oil is removed from the wells with oil-absorbent socks The oil absorbent socks and any free oil are stored on site in drums in a locked utility trailer

Woodard amp Curran (20534003) 13 72401

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 16: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

The schedule of oil monitoring and recovery will be as follows

1 Measure oil levels and oil thickness in the wells on a monthly basis

2 Remove oil from the wells on a monthly basis If the results of the oil monitoring indicate that monthly oil removal is not necessary then this schedule can be modified

The frequency of oil monitoring and removal during the Phase III VER program will depend on the quantity of oil collecting in each well because of the VER system The results of the oil monitoring and removal will be reported in all sampling and analytical reports

Woodard amp Curran (20534003) 14 72401

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 17: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

3 PHASE III VACUUM ENHANCED RECOVERY OF RESIDUAL OIL

Vacuum enhanced recovery of residual oil at the OConnor Site is being recommended in an attempt to capture and collect as much residual oil as practical pnor to proceeding with the final TI waiver request Vacuum Enhanced Recovery (VER) technology was used successfully at the TWA II area of the Site in 1997 pnor to Source Control The original VER system recovered approximately 17 gallons of oil over a 5-month period

VER technology involves applying a vacuum to the subsurface through a well in an attempt to draw residual oil into the well where it can be collected and removed The vacuum system will induce a pressure gradient in the soils and bedrock fractures and cause water and residual product to flow towards the well The vacuum is used to create the gradient so that water will not be drawn down into the deep portion of the bedrock aquifer The vacuum pressure will dissipate as it migrates through the soil and rock The actual radius of influence will depend on the geology and the amount of applied vacuum

31 Purpose

The purpose of the proposed VER program is to attempt to collect as much residual oil from the subsurface soils and bedrock as practical Low quantities of oil have been recovered from the bedrock wells in TWA II since Source Control with no enhancement to the gradient around the well (Appendix A) The VER system will create a pressure gradient towards the well to enhance the flow of oil towards the well The advantage of this extraction technology is that a considerable gradient towards the well can be developed without significant water table draw down

A vacuum will be applied to each of the four bedrock wells in TWA II (OW-202B OW-204B OW-301B and OW-302B) and the original VER recovery well RW-101 The VER system will be used on one well at a time The operation of the VER system will use components of the original VER system to the greatest extent possible All surrounding monitoring wells and observation wells will be monitored daily for oil and water table elevation during operation

The top of each well will be sealed and equipped with a water level transducer line a vacuum line and a vacuum gauge when a vacuum is being applied to the well The vacuum pressure will be pulsed by opening and closing an air valve close to the suction of the liquid ring vacuum pump used with the original VER system The seal water for the liquid ring pump will be recirculated seal water from a small reservoir The pulsing will be done to minimize the effects of creating a reverse draw down cone and maximize the oil collection efficiencies Every other day or on an alternate schedule if conditions dictate the vacuum will be broken oil depth measured and absorbent socks utilized to recover accumulated oil in the boring The volume of oil recovered is expected to be low with thickness of oil on the order of tenths of a foot Due to the expected low recovery volumes absorbent socks rather than product recovery pumps will be used Product recovery pumps do not work efficiently when very thin layers of product are available In situations with very thin layers of product product recovery pumps extract a great deal of groundwater while recovering the limited amounts of available oil

32 VER Product Recovery Pumping System

The operation of the VER system commences by initiating vacuum pulsing The pulsing frequency will be determined by the length of time it takes to draw the water column up the well to its maximum extent At that time the vacuum will be released and the water column allowed to return to static Once the

water level has returned to static the pulsing cycle will begin again Every other day the accumulated oil will be measured removed from the well and placed in drums Absorbent socks will initially be used to extract the oil from wells every other day If it is determined after operation that this frequency should

Woodard amp Curran (205340 03) 15 724 01

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 18: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

be changed by either increasing (ie twice a day) or decreasing oil extraction frequencies the changes will be made to optimize oil extraction Additionally if large quantities of oil are extracted on a frequent basis the feasibility of using automated product recovery pumps to capture the oil will be evaluated Once the available oil has been removed the VER system will be relocated to another well and the process will begin again

The length of time that the VER system is operated at each of the four bedrock wells (OW-202B OWshy204B OW-301B and OW-302B) and the original VER recovery well RW-101 will be dependent upon observations made in the field The VER system will be installed on one well operated on that well and responses will be measured at each of the other wells in Former TWA II area After the test is completed at a well the VER system will be moved to the next well within the Former TWA II area and the test will begin again including monitoring for oil at each of the other wells This procedure will be followed at each of the five wells At the end of each well test a trip report will be generated that will detail the results of the test The trip report will be sent by CMP to both the USEPA and the MEDEP via electronic mail This will allow all interested parties to stay up to date with the VER system results The testing will continue to move to each of the five wells in the circuit until as much residual oil as practical is withdrawn by the VER system

At the completion of the VER system test test results will be summarized and a report prepared The report will detail the length of system operation procedures followed at each well total volume of residual oil removed and an evaluation of the effectiveness of pulsing the VER system The report will include all trip reports submitted during the course of the VER operational test

Woodard amp Curran (205340 03) 16 72401

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 19: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

APPENDIX A

Historic Product Recovery Logs

Woodard amp Curran (20534003) 17 72401

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 20: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

22633 Vlitfl fiW-lOt BsvatxM 8glaquoomQl Top of Top of Etevadorv

DPraquogt0|lt FntOD OilOrf QtSHfKt ScPMfttoP iWfBctto TJf Bedrock Water OwtfiXW

1222laquo7 2494 2502 008 005 2250 2065 1965 2059 201 5 201 3

012298 2403 none 2250 2065 1965 2059 2015 2023

021398 2387 none 2250 2065 1965 2059 201 5 2025 031738 221 none 2250 2065 1965 2059 201 5 2042 052298 1838 none 2250 2065 1965 2059 201 5 2030

060898 1991 none 2250 2065 1965 2059 201 5 2064

072098 19 16 none 2250 2065 1965 2059 201 5 2072

083198 2239 2243 004 003 2250 2065 1965 2059 201 5 2039

092298 2377 2402 025 0 16 2250 2065 1965 2059 201 5 2023 102998 1895 19 18 023 0 15 2250 2065 1965 2059 201 5 2072

112398 1831 1835 004 003 2250 2065 1965 2059 201 5 2080

123198 1894 1897 003 002 2250 2065 1965 2059 201 5 2074

012399 1792 1793 001 001 2250 2065 1965 2059 201 5 2084 022699 1880 1881 001 001 2250 2065 1965 2059 201 5 2075 032699 1685 none 2250 2065 1965 2059 201 5 2095

042899 1935 1936 001 001 2250 2065 1965 2059 201 5 2070 OS2799 1999 2002 003 002 2250 2065 1965 2059 201 5 2063 062299 2125 21 4 015 010 2250 2065 1965 2055 201 5 2049 073199 2337 2356 0 19 012 2250 2065 1965 205 9 201 5 2028 083199 2672 2682 010 007 2250 2065 1965 2059 201 5 1995

091499 2489 2532 043 028 2250 2065 1965 2059 201 5 201 0 092199 1971 1973 002 001 2250 2065 1965 2059 201 5 2066 102899 1740 1741 001 001 2250 2065 1965 2059 201 5 20S9 113099 1726 1732 006 0 0 4 2250 2065 1965 2059 201 5 2090 123099 1776 13 05 029 019 2250 2065 1965 205 = 201 5 20S3 013100 1945 1930 035 023 2250 2065 1965 2059 201 5 2065 022900 1896 1927 031 020 2250 2065 1965 205_9j 201 5 207 1 032700 1650 1674 024 015 2250 2065 1965 2059 201 5 2096 042800 1483 1489 006 OC4 2250 2065 1965 2059 201 5 211 4 053100 1628 1631 003 002 2250 2065 1965 2059 201 5 2100

063000 1905 1928 023 0 15 2250 2065 1965 2059 201 5 207 1 073100 1891 1893 002 001 2250 2065 1955 2059 201 5 2074 082900 1995 1997 002 001 2250 2065 1955 2059 201 5 2064 090600 2059 2062 003 002 2250 2065 1965 2059 201 5 2057 103100 2156 21 69 013 003 2250 2065 1965 2059 201 5 2046 113000 1767 none 2250 2065 1965 2059 201 5 2087 122900 1837 none 2250 2065 1965 2059 201 5 2030 012601 1999 none 2250 2065 1965 2059 201 5 2063 022301 1943 none 2250 2065 1965 2059 201 5 2069 032901 1673 1677 004 003 2250 2065 1965 205=5 201 5 2056 042401 1474 none 2250 2065 1965 2055 201 5 211 6 053001 1885 189 005 OC3 2250 2065 1965 2055 201 5 2074

2250 2065 1965 2055 201 5 2250 2065 1965 2059 201 5

minimum 1474 ft I 226|total gallons oil removed 1 99 5 maximum 2682 ft 211 6

RW101

2300 - f 12

11 2250 shybull 10

2200 bull 9 BHaOil (in)

=bull 2150 8 bull Grcjnd

7 c ~ Screen Top - 2100 bull A yA V 6 pound Till vbull V^ ^ bull sj bull - y| 205 0 Y

^ 5 poundbull Bedrock si 200o ^w- 4 bull= -mdash Waer

A i tltrT-ttfftttttt-1-rt 3 _^_vVell Bcnom

2 1900 shy

1950 shy

1 I I 1850 - I R Ill I I I n

C7 O

^C ffi

IN

~- O 0 mdash 0 0 O 0 ^ C i 1 ^ sect Date

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

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t ] a

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TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 21: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

22655 VMtt _ QW-202S- Bedrock EKwatitW Bcttomof T-OfS-ot Top of Ktevat)3n

6laquofW txctltHe fvtiW 0W Qrwad SwssnToft Screen Tlaquo 8JF3ek Water 122297 2503 2535 032 021 2254 1966 1355 2069 201 4 201 2 012298 2387 23 S3 001 001 2254 1966 1355 2059 201 4 2027 021398 2355 none 2254 1966 1355 2069 201 4 2030 031798 2220 none 2254 1966 1355 2069 201 4 2044 052298 13 89 none 2254 1966 1355 2069 201 4 2077

06OS9S 2037 none 2254 1966 1355 206 9 201 4 2062

072098 2005 2005 000 000 2254 1966 1355 2059 201 4 2065

083198 2323 23 S3 045 029 2254 1966 1355 2069 201 4 2029

092298 2481 2541 060 039 2254 1966 1355 2069 201 4 201 1 102998 1948 1954 006 004 2254 1966 1355 2069 201 4 2070 112398 13 76 none 2254 1966 1355 2069 201 4 2073 123198 1952 none 2254 1966 1355 2059 201 4 2070 012399 1341 none 2254 1966 1355 2059 201 4 208 1 022699 1949 none 2254 1966 1355 205 a 201 4 207 1 032699 1690 none 2254 1966 1355 2059 201 4 2097 042899 2024 none 2254 1966 1355 2059 201 4 2063 052799 20 S1 none 2254 1966 1355 2069 201 4 2056 062299 2229 2232 003 002 2254 1966 1355 2059 201 4 2042 073199 2490 24 99 009 006 2254 1966 1355 20S9 201 4 201 6 083199 2473 2555 077 050 2254 1966 1355 2059 201 4 201 0 091499 2483 2450 002 001 2254 1966 1355 2069 201 4 201 7 092199 1982 1954 002 001 2254 1966 1355 2059 201 4 2067 102899 1767 1755 001 001 2254 1966 1355 2C69 201 4 2089 113099 1751 none 2254 1966 1355 2059 201 4 2090 123099 013100 2016

1S42 20r

none 001 001

2254 2254

1966 1966

1355 1355

2059 2069

201 4

201 4

203 1 2064

022900 1945 none 2254 1966 1355 2CS9 201 4 207 1 032700 1700 1702 002 001 2254 1966 1355 2C69 201 4 2095 042800 1555 1556 001 001 2254 1966 1355 2069 201 4 211 0 053100 1722 none 2254 1966 1355 259 201 4 2092 063000 21 90 22 C6 016 0 10 2254 1966 1355 25=1 201 4 2045 073100 1976 19 51 005 003 2254 1966 1355 2C59 201 4 2067 082900 2093 2094 001 001 2254 1966 1355 259 201 4 2056 090600 21 50 21 51 001 001 2254 1966 1355 259 201 4 2050 103100 2223 2239 011 007 2254 1966 1355 269 201 4 2042 113000 15 i none 2254 1966 1355 2 C 5 9 201 4 203 4 122900 15 97 nore 2254 1966 1355 269 201 4 2076 012601 2C 51 none 2254 1966 1355 2 C 5 9 201 4 2057 022301 2005 L _ 002 001 2254 1966 1355 2 C 6 9 201 4 2065 032901 1 C none 2254 1966 1355 269 201 4 2095 042401 15 i4 none 2254 1966 1355 25S 201 4 2107 053001 19 SO 2C 5 035 023 2254 1966 1355 2C59 201 4 2054

2254 1966 1355 2Z-3S 201 4 2254 1966 1355 259 201 4

minimum 1553 ft [ 2 5Jtoal gallons oil removed 2010 max muTi 25 55 ft 211 0

202B

23001 - 12

2250 shy 11 10

2200 shyQ

r 2150 ftt V

mdash 2100 o | 205 0 1

gtK UA|

^w_ j^_jf ^

x j ^v y -lt y T

8

7

5

laquobull5

c c

f

Ground

Screen Top

T 2 200 0 shy 4 mdash

1950 shyi |

6J

2

-- Water

1900 shy1 1

1850 bullraquo- t 1 n rshy ii x S1

oi r^ C^ N

CMbull-

en o sect 3 o o o o ^ mdash o o o bullmdash o

Date

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 22: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

22586 Well OW-2ClaquoB- Bedrock Eiavatidfv BotWWot T-ofgta Top fit EtevatiSn

BlaquopiW Ow Hraquo FolaquoIOil OKI-CSV Ground Sec eert top SSfiHKl TiS 8esdr Wafer

122297 1813 13 16 003 002 2226 194 1 1223 201 1 2006 2077

012298 1739 none 2226 1941 1223 201 1 2006 2085 021398 17 13 none 2226 1941 1223 201 2006 2087

031798 1433 none 2226 1941 1223 201 2006 211 5

052298 1364 none 2226 1941 1223 201 2006 2122

060898 1701 none 2226 1941 1223 201 2006 2089

072098 1729 none 2226 1941 1223 201 2006 2086

011198 206 none 2226 1941 1223 201 2006 2052

092298 2221 none 2226 1941 1223 201 1 2006 2037

102998 1675 none 2226 194 1 1223 201 1 2006 209 1

112398 1551 none 2226 194 1 1223 201 1 2006 2104

123198 1654 none 2226 1941 1223 201 1 2006 2093

012399 15 43 none 2226 1941 1223 201 1 2006 2104

022699 1664 none 2226 194 1 1223 201 1 2006 2092 032699 10S1 none 2226 194 1 1223 201 1 2006 2151

042899 1727 none 2226 1941 1223 201 1 2006 2086 OS2799 1791 none 2226 1941 1223 201 1 2006 2080 062299 1933 none 2226 194 1 1223 201 1 2006 2065 073199 j 2219 none 2226 194 1 1223 201 1 2006 2037

083199 2375 23 SI 002 001 2226 1941 1223 201 1 2006 2021

091499 21 63 21 65 002 001 2226 1941 1223 201 1 2006 2042 092199 1629 1630 001 001 2226 1941 1223 201 1 2006 2096 102899 135 none 2226 194 1 1223 201 1 2006 2120

113099 12 4~ none 2226 1941 1223 201 1 2006 2134

123099 1564 15 6S 002 001 2226 1941 1223 201 1 2006 2102

013100 1780 1731 001 001 2226 1941 1223 201 1 2006 2081

022900 1661 1653 002 001 2226 1941 1223 201 1 200 6j 2092 032700 1202 1203 001 001 2226 194 1 1223 201 1 2006 2138

042800 759 760 001 001 2226 1941 1223 201 1 2006 2183

OS3100 14CS none 2226 194 1 1223 2C1 1 2006 211 8 063000 17 poundS none 2226 1941 1223 201 1 2006 2083 073100 1554 none 2226 1941 1223 201 1 2006 2089 082900 13 15 none 2226 194 1 1223 201 1 2006 2077 090600 1ScC none 2226 1941 1223 201 1 2006 2070 1031100 1942 none 2226 1941 1223 201 1 2006 2064 113000 1C =2 none 2226 194 1 1223 201 1 2006 2149

122900 15 Z none 2226 194 1 1223 201 1 2006 2096 012601 15 2 none 2226 194 1 1223 201 1 2006 2076 022301 1 ~Ji none 2226 194 1 1223 201 1 2006 2035 032901 - Z~ none 2226 194 1 1223 201 1 2006 2165

042401 11 5 none 2226 194 1 1223 201 1 2006 214 7

053001 1 -shy none 2226 194 1 1223 201 1 2006 2085 2226 194 1 1223 201 1 2006 2226 194 1 1223 201 1 2006

minimun 0 1Q|total gallons oil removed maximjn

204B

2300 -

2250 shy

2200

=bull 2150 SOil (inj

j Ground mdash 2100 Screen Top j

| 2050 Till

iS 2000 - Bedrock

-Waer 1950

1900

1850

S 3 o mdash

Date

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 23: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

22722 Well OWf 3018 Bed rock E lavatory

DlaquopvW CwJiHJC Blaquo(O|l GiW OTWiniJ Screen Top 122297 2258 1973

012298 2258 1973

021398 2258 1973

031798 2219 none 2258 1973

OS2298 2258 1973

060898 1980 none 2258 1973

072098 1916 none 2258 1973

083198 2258 1973 092298 2392 none 2258 1973

102998 184 none 2258 1973

112398 1816 none 2258 1973

123198 1879 none 2258 1973

012399 193 none 2258 1973

022699 1997 none 2258 1973

032699 1704 none 2258 1973

042899 2258 1973 052799 2004 none 2258 1973 06(2299 21 16 none 2258 1973 073199 2346 none 2258 1973 083199 2687 none 2258 1973 091499 2637 2662 025 0 16 2258 1973 092199 1966 none 2258 1973 102899 1687 none 2258 1973 1130199 1669 none 2258 197 123099 1671 1673 002 001 2258 197 013100 1861 18 S2 001 001 2258 197 022900 1919 1920 001 001 2258 197 032700 1631 1633 002 001 2258 197 042800 1361 1362 001 001 2258 197 053100 1531 none 2258 197 063000 1837 none 2258 197 073100 1889 none 2258 197 082900 1967 none 2258 197 090600 2001 none 2258 197 103100 21 47 none 2253 197 113000 1326 none 2258 157 122900 1785 none 2258 197 012601 1935 none 2258 197 022301 1947 none 2258 197 032901 1727 none 2258 157 042401 1325 none 2258 197 053001 1755 none 2258 197

2253 197 2258 1973

0 21 |al gallons oil removed

301B

2300 shy

2250

2200

t 2150

mdash 2100

1 2050

2 200 0

1950

1900 shy

1350 bull

8craquorobt Ssreen

1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1059 1059 1059 1059 1059 1059 1059 1059 1059 1055 1055 1055 1059

Tofnut tlaquo 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

_ 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078 2078

11 10 9 3 | 7 c 6 g 5 amp a

- 6 t

Topof Sedtoek

2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028 2028

bullEtevaSon WsfBf

2050

2074 208 1

2033 2086 2091 2084 2079 2073 2102

2072 2061 2038 2004 2006 2076 2104 2105 2105 2084 2080 2109 2136 211 9 2089 2083 2076 2072 2058 2090 2094 2079 2078 2100 2140 2097

I Oil (in) Bedrock

Ground Screen Tcp Till

-Waer

CN bullmdash bull ~ o o

Date

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

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t ] a

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Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

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5

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11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

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n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

1 t^shy

r

y 0

Date

Page 24: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

22749 Wlaquolf lt3W-302B- Bedrock Elevalon Bottom 6t T^ol Topdf EteiStoh

Dm Ofl OlaquolaquoJB- ft Olraquo 3raquoIW Grcwnd Set sen- Too bullSemen 8e4roek Wafef T1272297 2769 2782 013 008 2255 1930 1448 2050 1985 1997 012298 2659 2660 001 001 2255 1930 1448 2050 1985 2009 0213(98 2667 none 2255 1930 1448 2050 1985 2008 031798 24 S9 none 2255 1930 1448 2050 1985 2025 OS2298 2235 none 2255 1930 1448 2050 1985 205 1 060898 2344 none 2255 1930 1448 2050 1985 2041 072098 2333 none 2255 1930 1448 2050 1985 2042 081198 2641 none 2255 1930 1448 2050 1985 201 1 0912298 27fr9 none 2255 1930 1448 2050 1985 1996 102998 22 S7 none 2255 1930 1443 2050 1985 2046 112398 2221 none 2255 1930 1446 2050 1985 2053 123198 2274 none 2255 1930 1448 2050 1985 2048 012399 21 59 none 2255 1930 1448 2050 1985 2059 022699 2263 none 2255 1930 1448 2050 1985 2049 032699 21 13 none 2255 1930 1448 2050 1985 2064 042899 2344 none 2255 1930 1448 2050 1935 2041 OS2799 24 12 none 2255 1930 1448 2050 1985 2034 062299 2535 none 2255 1930 1448 2050 1985 2021 073199 27 68 2311 023 015 2255 1930 1448 2050 19S5 1994 083199 2942 3013 071 046 2255 1930 1448 2050 1985 1974 091499 2353 2902 049 032 2255 1930 1443 2050 1985 1985 092199 2361 2364 003 002 2255 1930 1443 2050 1985 2039 102899 21 13 none 2255 1930 1448 2050 1085 2063 113099 21 13 21 14 001 Ot)1 2255 1930 1448 2050 1935 2064 123099 21 52 none 2255 1930 1448 2050 19S5 2060 013100 2303 2309 001 001 2255 1930 1448 2050 1985 2044 022900 2245 2245 001 001 2255 1930 1448 2050 1985 2050 032700 2042 20 44 002 001 2255 1930 1443 2050 1985 207 1 042800 1896 1393 002 001 2255 1930 1443 2050 1935 2035 OS3100 2032 none 2255 1930 1443 2050 1935 2072 063000 2300 2315 015 010 2255 1930 144 S 2050 1935 2043 073100 2270 2312 042 027 2255 1930 1443 2050 1935 2044 082900 2355 2362 007 005 2255 1930 1448 2050 1985 2039 090600 24 OS 24 15 007 005 2255 1930 1443 2050 1935 2033 103100 24 S3 2519 031 020 2255 1930 1448 2050 1935 2023 1130)00 13 13 none 2255 1930 1448 2050 1935 2094 122900 21 35 nore 2255 1930 144 3 2C5 0 1935 2061 012601 2CC-S nore 2255 1930 1446 2050 1935 2045 022301 2265 rone 2255 1930 1443 2050 19S5 2048 032901 20 C3 rcne 2255 1930 1443 2050 1935 2075 042401 Is -- me 2255 1930 1448 2050 1935 2090 OS3001 t-f ~- rcne 2255 1930 1443 2050 1935 2049

2255 1930 144 3 2C50 103 5 2255 1930 144 8 2CoC 1935

rr r _~ bull- f | 1 76|toal gallons oil removed 1974

rax r- jm ^Z I fl 2094

302B

2300 12

2250 - bull 11 j 10

2200 i

7f 2150 | 8V

bull bullg

BSSaiO I (in)

Ground ~

|

S

2100 4

205 0 -I

200 0 ^laquo-~

gtbullVshy gt

V -Avshy^N

v-^v

^sV A

^

y bull=bull

t ] a

i4 _

Screen Top

TH Bedrock

^ O mdash laquomdash Waer

bullbull -

1900 -f

185 0 rshy oo

S poundN ^ rs ri raquoshy o

30

[N

r~^o

5

rs

C shy

11 | $ i | sect |poundj ^ fO (N f^ (N lt1 raquomdash ^ r^ ^ ^ S o a o o -shy o o

ii |

1

i

B 9

1

n

Date

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

^

5 ^

A

3

2

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Page 25: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

217 12 Wlaquol UM-1- Overt jrten Etevalria T-ojgtot Top of EWWrtion

Dwwai OWltHI FetlW GUI-Oil- Ground SCTWftTop 8Botto tlaquo Bedrock Wafer 121297 2159 2150 2100 2039 2031

012298 2159 2150 2100 2039 2031

021398 2159 2150 2100 2039 203 1

031798 2159 2150 2100 2039 203 1

OS2298 2159 2150 2100 2039 203 1

060898 2159 2150 2100 2039 203 1

072098 395 402 007 001 2159 2150 2100 2039 203 1 213 1 083198 568 5-3 005 001 2159 2150 2100 2039 203 1 211 4 092298 5S3 5= 001 000 2159 2150 2100 2039 2031 211 2 102998 1 55 none 2159 2150 2100 2039 2031 2155

112398 1 nore 2159 2150 2100 2039 203 1 2154

123198 i 14 none 2159 2150 2100 2039 2031 2130

012399 4 none 2159 2150 2100 2039 2031 2128

022699 4 3 none 2159 2150 2100 2039 2031 2128

032699 1 15 none 2159 2150 2100 2039 2031 2158

042899 4 s none 2159 2150 2100 2039 2031 213 1 052799 4 4 none 2159 2150 2100 2039 2031 2127

062299 521 rone 2159 2150 2100 2039 203 1 211 9 073199 5 - none 2159 2150 2100 2039 203 1 211 2 083199 5 -_- none 2159 2150 2100 2039 2031 211 2 091499 390 ^ ~i 002 000 2159 2150 2100 2039 2031 2132

092199 ^mdash

none 2159 2150 2100 2039 2031 214 7 102899 233 21 = 001 000 2159 2150 2100 2039 2031 214 7

113099 1 ~r nore 2159 2150 2100 2039 2031 2153

123099 _i mdashc ncre 2159 2150 2100 2039 203 1 2132

013100 529 5 bull 002 000 2159 2150 2100 2039 2031 211 8 022900 560 pound 62 002 000 2159 2150 2100 2039 2031 211 5 032700 208 t -~ 001 000 2159 2150 2100 2039 2031 2150

042800 217 ^ r 001 000 2159 2150 2100 2039 2031 2149

OS3100 3 -- rone 2159 2150 2100 2039 203 1 2137

063000 4 bull nore 2159 2150 2100 2039 203 1 212S

073100 nore 2159 2150 2100 2039 2031 2140

082900 4 2- nore 2159 2150 2100 2039 2031 2129

090600 2159 2150 2100 2039 203 1 103100 ^ - none 2159 2150 2100 2039 203 1 2143

113000 1 -_ none 2159 2150 2100 2039 203 1 2152

122900 mdash i none 2159 2150 2100 2039 203 1 2129

012601 4 - none 2159 2150 2100 2039 203 1 2123

022301 2159 2150 2100 2039 203 1 032901 - rcne 2159 2150 2100 2039 203 1 215S

042401 _ - ncne 2159 2150 2100 203 S 203 1 2150

OS3001 -- r~ne 2159 2150 2100 2039 2031 213 1 2159 2150 2100 203 2031

2159 2150 2100 2039 2031

m n p _~i - bull | 0 5T]total gallons oil removed 211 2 magt mjr- - z ampgt 2158

UM 1

2200 - 12

11

10

V bull 2150 ^bullx A gt lt gt t v x- raquo bull A laquo gt raquo gt 9 BBSSKOil [ n)

8 laquo Ground V

^JI ^ 7 c Screen Top bullmdashbull co 210 0 f ftfftffr ffffffffftff- ^ wen bottom

5 5 poundbull Bedrock bullt a c 4 - raquo Water

2050 3 TI I

2

1 is laquo M laquov shy200 0 bull

Q

rbullraquo Xii e S c sect | | g g 8 8 8 8 5 cN r- c ~ fN r r- ^ ^ C N r i r ^ r o j N j n o r N f N (N -n - o o ^ 5 o o S 2 o o o 2 sect

Date

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

Cumulative Oil Removal

7

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A

3

2

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Date

Page 26: TABLE OF CONTENTS - United States Environmental …2.2 Analytica 1l Program 0 . 2.3 Samplin and Data Quality Objectivegs 1 0 . 2.4 Samplin and Proceduregs 1 Equipment 2 . 2.4.1 Ai

Oil Removal Summary

Data

122297 012298 021398 031798 052298 060898 072098 083198 092298 102998 112398 123198 012399 022699 032699 042899 052799 062299 073199 083199 091499 092199 102899 113099 123099 013100 022900 032700 042800 053100 063000 073100 082900 090600 103100 113000 122900 012601 022301 032901 042401 053001

0 in 0 (0O

Gallons of Oil Removed Total

RW-101 OW-202B OW-204B OW-301B DW-302B UM-1 Gallons 2278 2046 0098 0209 1756 0036 6423 0052 0 209 0 020 0 085 0366

0007 0007 0013 0000 0000 0000 0000

0003 0011 0015 0026 0294 0 008 0328 0163 0392 0 002 0556 0 150 0039 0189 0026 0026 0020 0020 0007 0007 0007 0007

0000 0007 0007 0020 0020 0098 0020 0117 0 124 0059 0 150 0333 0065 0503 0013 0463 1044 0281 0013 00t3 0163 0 320 0 003 0793 0013 0013 0007 0 020 0052 0007 0007 0002 0015 0039 0 007 0046 0189 0013 0013 0215 0228 0 007 0 007 0 007 0 007 0 003 0258 0202 0013 0007 0 007 0 003 0232 0157 0013 0007 0013 0013 0002 0204 0039 0 007 0 007 0 007 0013 0002 0073 0020 0020 0 150 0 104 0 098 0352 0013 0033 0 274 0320 0013 0007 0 046 0065 0020 0007 0 046 0072 0085 0072 0 202 0359

0000 0000 0000

0013 0013 0026 0026

0000 0033 0 228 0261

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