Revised Aquifer Characterization Work Order, Chamberlain ......Work Plan presents a summary of proposed activities for evaluating the characteristics of groundwater aquifers within

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Aquifer Characterization Work Plan

Chamberlain Manufacturing Corporation

Former Facility at

550 Esther Street

Waterloo Iowa

EPA Docket Nos

RCRA-07 -2010-002

CERCLA-07 -2010-0005

May 202010

Revised August 2 2010

Terracon Project No 07107020

Prepared for

Chamberlain Manufacturing Corporation Elmhurst Illinois

Prepared by

Terracon Consultants Inc Bettendorf Iowa

llerracan August 2 2010

United States Environmental Protection Agency Region 7 Air RCRA and Toxics Division 901 North 5th Street Kansas City KS 66101

Attention Mr Bruce Morrison

Re Aquifer Characterization Work Plan Chamberlain Manufacturing Corporation Former Facility at 550 Esther Street Waterloo Iowa EPA Docket Nos RCRA-07-2010-002 and CERCLA-07-2010-0005

Dear Mr Morrison

Terracon Consultants Inc (Terracon) is pleased to submit this revised Aquifer Characterization Work Plan (AC Work Plan) for activities in conjunction with the site referenced above The AC Work Plan presents a summary of proposed activities for evaluating the characteristics of groundwater aquifers within unconsolidated geologic deposits and the underlying Devonian system bedrock

Should you have any questions or require additional information please do not hesitate to contact our office

Sincerely Terracon Consultants Inc

Jttmr Gerald T Hentges PG Environmental Manager Senior Project Manager

Terracon Consultants Inc 870 40th Avenue Bettendorf Iowa 52722 P (563)355 0702 F (563) 355 4789 terraconcom

Geotechnical bull Environmental bull Construction Materials bull Facilities

lrerraconTABLE OF CONTENTS

10 INTRODUCTION 1 11 Site Conditions 1 12 Previous Aquifer Characterization Activities 2 13 Project Objectives 2

20 SCOPE OF SERVICES 3 21 Proposed Study Area 3 22 Aquifer Characterization Activities 3

221 Site Access 3 222 Pre-Test Activities 3 223 Pump Test Activities 4 224 Post-Test Activities 4

30 METHODOLOGIES 5

40 LA BORA TORY ANALYSIS 5

50 AQUIFER CHARACTERIZATION REPORT 5

60 SCHEDULE 6

Tables

Table 3-1 Terracon Standard Operating Procedures 5 Table 6-1 Schedule 6

Appendices

Appendix A- Figures

ii

ACRONYMS amp ABBREVIATIONS lrerracon AC Aquifer Characterization bgs below ground surface CERCLA Comprehensive Environmental Response Compensation and Liability Act City City of Waterloo COG Chain of Custody EPA Environmental Protection Agency Facility Chamberlain Manufacturing facility gpm gallons per minute HASP Health and Safety Plan IDNR Iowa Department of Natural Resources IGS Iowa Geological Survey NELAC National Environmental Laboratory Accreditation Conference PCE Tetrachloroethene (or Perchloroethene) PID Photoionization Detector ppm parts per million QA Quality Assurance QAM Quality Assurance Manual QAPP Quality Assurance Project Plan QC Quality Control RCRA Resource Conservation and Recovery Act SOP Standard Operating Procedure SOW Statement of Work TCE Trichloroethene TestAmerica TestAmerica Inc TSOP Terracon Standard Operating Procedure UAO Unilateral Administrative Order USEPA United States Environmental Protection Agency USGS United States Geological Survey VOC Volatile Organic Compound

iii

lrerracon AQUIFER CHARACTERIZATION WORK PLAN

CHAMBERLAIN MANUFACTURING CORPORATION FORMER FACILITY AT 550 ESTHER STREET WATERLOO IOWA

Project No 07107020 May 20 2010


10 INTRODUCTION

Terracon has developed this AC Work Plan to present the approach for evaluating the groundwatec aquifer characteristics within unconsolidated geologic deposits and the underlying Devonian system bedrock at the former Chamberlain Manufacturing Facility This AC Work Plan is submitted in accordance with the requirements of the UAO Docket Nos RCRA 07-2010-002 and CERCLA 07-2010-005 dated April 20 2010 and Task II of the SOW attached to the UAO Capitalized terms not defined herein have the definitions set for the in the UAO or the SOW

The AC Work Plan has been developed per the recommendations of the IDNR memorandum dated March 25 2009 and the requirements of the SOW

11 Site Conditions

The Facility is an irregularly shaped parcel containing approximately 22 8 acres and located at 550 Esther Street in Waterloo Iowa A Topographic Map is included as Figure 1 in Appendix A

A Site Diagram is included as Figure 2

The Facility manufactured metal washer wringers and projectile metal parts from approximately 1919 until 1996 when it was sold to Atlas Warehouse LC for use as a storage facility The Facility was subsequently abandoned and is currently vacant The City acquired the Facility from Atlas Warehouse LC in 2005 in an effort to facilitate redevelopment and has demolished a significant portion of the Facility

The Facil ity is zoned Heavy Industrial (M-2) by the City The Facility is adjoined by park land to the north and south single family residential housing west and Virden Creek followed by a golf course to the east Virden Creek is within approximately 100 feet of the Facility at its closest point Gates Park adjoins the Facility to the north across Louise Street to the east across Virden Creek and to the south across the railroad tracks Single family residences are located across East 4th Street to the west of the Facil ity Single family residences are also located along the east side of East 4th between Anita and Louise Streets

Aquifer Characterization Work Plan lrerraconFormer Chamberlain Manufacturing Facility ~_ Waterloo Iowa May 20 201 0 Revised August 2 2010 ( Terracon Project No 07107020

Subsurface soils at the site consist of approximately 60 to 65 feet of sand and gravel deposits above Silurian and Devonian-aged limestone bedrock The Devonian-age limestone deposits are about 125 feet th ick and are composed of the Wapsipinicon and Cedar Valley formations The Silurian-age limestone deposits are about 100 feet thick Continuous confining layer are not present between the sands and gravels and the limestone bedrock so these units are believed to be hydrologically connected The Devonian aquifer in this area is intensely fractured has karst development

Based on field observations the upper groundwater unit which underlies a large portion of the Facility is a perched aquifer created by fill material overlying native soils Depth to groundwater at the Facility ranges from less than 10 feet bgs in the area of the perched aquifer to 20 feet bgs Depth to groundwater off the Facility ranges from approximately 10 feet bgs to greater than 20 feet Groundwater in both the unconsolidated deposits and the Silurian and Devonian bedrock units are likely to flow to the southwest toward the Cedar River

A municipal water supply well used primarily as a peak well during periods of high demand (City Well No 22) is located approximately 600 feet north of the Facility within Gates Park The City Well No 22 fully penetrates the Silurian-Devonian system In addition geothermal wells located at Logan Middle School and Allen Memorial Hospital located west and northwest of the Facility respectively are developed in the Silurian-Devonian aquifer The Logan Middle School geothermal system discharges extracted groundwater into an injection well located between the geothermal well and the site The Allan Hospital geothermal system discharges the groundwater to the storm sewer system The locations of the wells are depicted on Figure 2 Appendix A

12 Previous Aquifer Characterization Activities

Following completion of the Logan Middle School geothermal system a pump test was conducted in December 2008 to evaluate the system performance In conjunction with pump test activities transducers were installed in groundwater monitoring wells at and near the Facility to evaluate the effects of groundwater withdrawal on the contaminant plume Although a direct correlation could not be established between the operation of the geothermal system and the groundwater monitoring wells the IDNR IGS and USGS concluded that sub-regional flow under large

withdrawal conditions was not well defined and that additional testing was warranted

13 Project Objectives

The objective of the AC Work Plan is to develop procedures to determine if the influence of large withdrawal and injection conditions from municipal water supply and geothermal wells significantly alter the direction and rate of the flow of groundwater contaminant plumes toward sensitive receptors under homes to the west-northwest of the Facility) Results of AC activities would also be used to determine if the wells would interfere with the effectiveness of a groundwater remedy should any be technically and economically feasible for the Facility

2

Aquifer Characterization Work Plan lrerracanFormer Chamberlain Manufacturing Facility m Waterloo Iowa May 20 2010 Revised August 2 2010 E Terracon Project No 07107020

20 SCOPE OF SERVICES

The AC Work Plan is designed to gain a better understanding of the three-dimensional flow

components and head relationships in the groundwater system by completing a pump test on an existing groundwater well A series of transducers will be installed in groundwater wells and monitored in advance of the pump test to get relevant background information of local and

regional stresses on the shallow water table and Devonian aquifer Water levels will be continuously monitored during the pump test to evaluate water use and groundwater movement

and following completion of the pump test to monitor groundwater recovery at affected locations

21 Proposed Study Area

The study area will include the Facility and will extend north and west to include Gates Park Allen Hospital and Logan Middle School In conjunction with aquifer characterization activities

groundwater levels will be monitored at shallow on-site well MW-12 deep on-site wells MW-15 and MW-16 shallow off-site well OSMW-9 and the former on-site production well No 3 In

addition groundwater levels will be monitored at City Well No 22 in Gates Park and at Logan

Middle School geothermal well No 1 and No 2

22 Aquifer Characterization Activities

221 Site Access

Prior to initiating pump test activities Terracon will contact the Allen Hospital to discuss pump test

procedures and to request permission to conduct a pump test on their geothermal well No 2 or No 3 In addition the City of Waterloo Water Works City of Waterloo Community Development

Office and Waterloo Community School District will be contacted to request permission to install

transducers in their wells to measure groundwater levels during the pump test If wells cannot be

accessed to install transducers existing altitude gauges will be used to obtain manual water level

measurements observations

Terracon will also contact Shawver Well Drilling to request assistance with the performance of the

pump test with the removal of the Chamberlain Well No 3 well head

222 Pre-Test Activities

Two additional observation wells will be installed between the Allan Hospital wells and the

Chamberlain site The wells will be advanced to the top of bedrock and will be screened over the lower ten feet of the boring The location of the proposed observation wells is depicted on Figure

2 Appendix A

3

Aquifer Characterization Work Plan lrerraconFormer Chamberlain Manufacturing Facility t Waterloo Iowa May 20 2010 Revised August 2 2010 a Terracon Project No 07107020

At least 24-hours prior to the start of the pump test Terracon in conjunction with the IDNR IGS and USGS will complete the installation of transducers in Chamberlain monitoring wells MW-12 MW-15 MW-16 and OSMW-9 former Chamberlain production well No 3 Logan Middle School well No 1 and No 2 City Well No 22 and the proposed observation wells Immediately following installation the depth to water will be measured from a convenient reference using an electric water tape The water level measurement and time will be recorded on a standard field form

Prior to installing the transducers in Chamberlain monitoring wells MW-12 MW-15 MW-16 and former Chamberlain production well No 3 Terracon will measure for the presence of nonshyaqueous phase liquids by lowering an electric interface probe to the bottom of the well

223 Pump Test Activities

At the designated time Allen Hospital well No 2 or No 3 will be started and allowed to run nonshystop for a period of at least 24-hours The well will be operated at a rate of 1100 gpm Water levels in the well be recorded at 5-minute intervals for the first 30 minutes 10-minute intervals for the next 60 minutes 30-minute intervals for the next four hours and then hourly until the

completion of the test

Periodic water level measurements will be made using an electric water tape at Chamberlain monitoring wells MW-12 MW-15 MW-16 and OSMW-9 former Chamberlain production well No 3 Logan Middle School well No 1 and No 2 and the proposed observation wells to verify recorded measurements The water level measurements and times will be recorded on a standard field form

224 Post-Test Activities

Not sooner than 24-hours following completion of the pump test Terracon in conjunction with the IDNR IGS and USGS will remove the transducers from Chamberlain monitoring wells MW-12 MW-15 MW-16 and OSMW-9 former Chamberlain production well No 3 Logan Middle School well No 1 and No 2 City Well No 22 and the proposed observation wells Immediately prior to transducer removal the depth to water will be measured from a convenient reference using an

electric water tape The water level measurement and time will be recorded on a standard field form

Following removal of the transducers the IDNR in conjunction with the IGS and USGS may collect one groundwater sample from Chamberlain monitoring wells MW-12 MW-15 MW-16 and OSMW-9 former Chamberlain production well No 3 Logan Middle School wells No 1 and No 2 City Well No 22 and the proposed observation wells and Allen Hospital well No 2 or No 3 Groundwater samples will be field screened for temperature and pH and will be submitted to a laboratory for analysis of tetrachloroethene trichloroethene cis-1 2-dichloroethene 11 1shytrichloroethane and 11 2-trichloroethane by EPA Method 8260

4

Aquifer Characterization Work Plan Former Chamberlain Manufacturing Facility 1t Waterloo Iowa lrerracon May 20 2010 Revised August 2 2010 ~ Terracon Project No 07107020

30 METHODOLOGIES

Project activities will be completed in accordance with the USEPA-approved QAPP Revision 1 dated August 18 2006 and relevant TSOPs The following TSOPs will be used during the assessment

Table 3-1 Terracon Standard Operating Procedures

REFERENCE NO TITLE

E10 Project Mobilization

E20 Standard Safe Operating Procedures for Hazardous Waste Operations

E30 Chain of Custody Documentation

E 50 Sampling - Environmental Representativeness

E470 Sample Handling- Groundwater (Non-Hazardous)

E530 pH Field Screening -Water

E570 Temperature Field Screening

E580 Turbidity Field Screening

E1830 Field Measurement- Free-Phase Product

E2405 Cleaning - General

E2410 Cleaning - Manual Washing

40 LABORATORY ANALYSIS

Groundwater samples will be submitted for analysis of tetrachloroethene trichloroethene cis-1 2shydichloroethene 11 1-trichloroethane and 11 2-trichloroethane using EPA Method 8260

Laboratory procedures will be performed by TestAmerica Cedar Falls Iowa TestAmerica is NELAC accredited for the laboratory methods referenced above The laboratory QAM and SOP is on file with the USEPA A copy of the TestAmerica data will be reported in accordance with the QAM and SOP

50 AQUIFER CHARACTERIZATION REPORT

In accordance with the schedule in the USEPA-approved AC Work Plan Respondent will submit a AC Report which provides an evaluation of the 24-hour pump test results The AC Report will evaluate the response and recovery of the unconsolidated aquifer and the SilurianDevonian aquifer The evaluation will consider the influence of recurring City Well No 22 on the contaminant plume under stressed conditions

5

Aquifer Characterization Work Plan lrerracanFormer Chamberlain Manufacturing Facility ~ Waterloo Iowa May 20 2010 Revised August 2 2010 e Terracon Project No 07107020

60 SCHEDULE

Based upon currently available information the proposed schedule is as follows

Table 6-1 Schedule

Activity Days to Com[lete After USEPA A[[roval of AC Work Plan

Notify affected parties coordinate with IDNR IGS and USGS and arrange for services of well contractor

30

Complete pump test 60

Receive analytical results 75

Submit AC Report 120

6

lrerracon

Appendix A

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llerracan August 2 2010

United States Environmental Protection Agency Region 7 Air RCRA and Toxics Division 901 North 5th Street Kansas City KS 66101

Attention Mr Bruce Morrison

Re Aquifer Characterization Work Plan Chamberlain Manufacturing Corporation Former Facility at 550 Esther Street Waterloo Iowa EPA Docket Nos RCRA-07-2010-002 and CERCLA-07-2010-0005

Dear Mr Morrison

Terracon Consultants Inc (Terracon) is pleased to submit this revised Aquifer Characterization Work Plan (AC Work Plan) for activities in conjunction with the site referenced above The AC Work Plan presents a summary of proposed activities for evaluating the characteristics of groundwater aquifers within unconsolidated geologic deposits and the underlying Devonian system bedrock

Should you have any questions or require additional information please do not hesitate to contact our office

Sincerely Terracon Consultants Inc

Jttmr Gerald T Hentges PG Environmental Manager Senior Project Manager

Terracon Consultants Inc 870 40th Avenue Bettendorf Iowa 52722 P (563)355 0702 F (563) 355 4789 terraconcom

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LEGEND


RAILROAD

MONITORING WELL

0


I

GEOBROPE SAMPLES







(563)355-0702 (563)355-4789




550 ESTHER STREET

WATERLOO IOWA


SHEET NO 2 OF 3

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RD

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MONITORING WELL

GEOBROPE SAMPLES







(563) 355-0702 (563) 355-4789



WATERLOO IOWA



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CITY WELL NO 22

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I I I j I I

I I I i I I I I j




I II I

----

~ --~-----~--~--

lOVISEST


1 WELL

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LEGEND


RAILROAD

MONITORING WELL

0


I

GEOBROPE SAMPLES







(563)355-0702 (563)355-4789




550 ESTHER STREET

WATERLOO IOWA


SHEET NO 2 OF 3

----------- 4

RD

_

~I RD

_

REll

N LEGEND

bull PROPERTY LINE

RAILROAD

MONrTORING WELl

RESIDENTlAL







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I I I I I I I I

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CITY WELL NO 22

r middot I I



I I I j I I

I I I i I I I I j




I II I

----

~ --~-----~--~--

lOVISEST


1 WELL

I I

I RES RES I I I I

r I I I I

r -shy1

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ZMW-15 1

1MW-1 I

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bull

OSGP-17bull I I





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RES



OSMW-4bull

OSMW-8

bull

-shy

9SMW-3

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]





LEGEND


RAILROAD

MONITORING WELL

0


I

GEOBROPE SAMPLES







(563)355-0702 (563)355-4789




550 ESTHER STREET

WATERLOO IOWA


SHEET NO 2 OF 3

----------- 4

RD

_

~I RD

_

REll

N LEGEND

bull PROPERTY LINE

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----------- 4

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bull PROPERTY LINE

RAILROAD

MONrTORING WELl

RESIDENTlAL







Documents

Revised Aquifer Characterization Work Order, Chamberlain ......Work Plan presents a summary of proposed activities for evaluating the characteristics of groundwater aquifers within