Golder Associates Inc.1809 North Mill Street, Suite CNapervillelL USA 60563Telephone (708] 357-2066Fax (708) 357-2330

143, GolderAssociates

REVISED

ADDENDUM TO RVFS WORK PLANYEOMAN CREEK AND EDWARDS' FIELD LANDFILLS

ADDITIONAL LANDFILL GAS MONITORING

Submitted to:

U.S. Environmental Protection Agency

and

Illinois Environmental Protection Agency

Distribution

1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy1 Copy2 Copies

Richard Boice, U.S. Environmental Protection AgencyStephen Nussbaum, Illinois Environmental Protection AgencyOm Patel, Roy F. WestonShell J. Bleiweiss, Esq., McDermott, Will & EmeryWilliam G. Beck, Esq., Lathrop, Norquist & MillerDerrick Vallance, Browning Ferns IndustriesGlen Lenzi, Outboard Marine CorporationPierre Talbert, Esq., Foley & LardnerPeter LoMonaco, Esq.Richard Parson, City of WaukeganNeal Rountree, Goodyear Tire and Rubber CompanyDale Vitale, Outboard Marine CorporationGolder Associates Inc.

January 1993 913-8083.205/913-8084.205

OFFICES IN AUSTRALIA, CANADA, GERMANY, HUNGARY, ITALY, SWEDEN, UNITED KINGDOM, UNITED STATES

Oolder Associates Inc.1809 North Mill Street, Suite CNaperville, IL USA 60563Telephone (708) 357-2066Fax [708] 357-2330

January 18,1993

p-ColderAssociates

913-8083.205913-8084.205

Mr. Richard BoiceUnited States Environmental Protection AgencyHSRL-6JRegion V77 West Jackson BoulevardChicago, Illinois 60604

Mr. Stephen NussbaumIllinois Environmental Protection Agency2200 Churchill RoadSpringfield, Illinois 62706

RE: REVISED ADDENDUM FOR ADDITIONAL LANDFILL GAS MONITORINGYEOMAN CREEK AND EDWARDS' FIELD LANDFILLS RI/FS

Dear Mr. Boice and Mr. Nussbaum:

Attached please find a copy of the Revised Addendum to the approved RJ/FS Work Planfor Additional Landfill Gas Monitoring at the Yeoman Creek and Edwards' Field Landfills.The revised addendum incorporates comments made by the U.S. EPA in a letter datedNovember 19, 1992 and recommendations by Colder Associates that were contained ina letter to the U.S. EPA dated December 4, 1992, and comments made by U.S. EPA andColder Associates in a January 4,1993 telephone conversation.

If you have any questions, please contact us.

Sincerely,

COLDER ASSOCIATES INC.

Ali A. HashimiProject E nineer

Ronald J. PattersofPrincipal

cc: Yeoman Creek PRP CommitteeAAH/RJP/djfEnclosure(83200582. wpUdjO

IM Al IQTDA! IA f*AMAPiA i^ Ul IMf^fl DV ITAI V WA/CPiCN! I "MUCH 1 IMITCn CTATCC

January 1993 -i- 913-8083.205/913-8084.205

TABLE OF CONTENTS

SECTION PAGE

1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2.0 FIELD PROCEDURES FOR INSTALLATION AND SCREENING OFTEMPORARY SOIL GAS PROBES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.1 Equipment and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32.2 Temporary Probe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.3 Procedures for Gas Screening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.4 Temporary Probe Removal and Decontamination . . . . . . . . . . . . . . . . 62.5 Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.6 Health and Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.0 SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

TABLES

TABLE 1 RESULTS OF JUNE 1992 LANDFILL GAS PROBE SCREENINGTABLE 2 RESULTS OF SEPTEMBER 1992 LANDFILL GAS PROBE SCREENING

FIGURES

FIGURE 1 PROPOSED LOCATIONS OF ADDITIONAL SOIL GAS MEASUREMENTS

<Jold«r Associates

January 1993 -1- 913-8083.205/913-8084.205

1.0 INTRODUCTION

In letters dated July 27, 1992, and August 27, 1992, U.S. EPA requested that the

Respondents for the Yeoman Creek and Edwards' Field Landfills prepare an addendum

to the RI/FS Work Plan for additional landfill gas monitoring to determine the extent oflandfill gas migration from the Site. The letters indicated that the additional monitoring

should be conducted on the northern, western and eastern sides of the Yeoman Creek

Landfill portion of the Site and on the western and southern sides of the Edwards' Field

Landfill portion of the Site. This monitoring should be conducted by completingadditional soil gas measurements progressively farther from the Site outside perimeter gas

probes where elevated screening readings were obtained on the combustible gas indicatoror organic vapor analyzer. In addition, the addendum should include a schedule and

revisions to the U.S. EPA-approved Field Sampling Plan (FSP), Quality Assurance Project

Plan (QAPP), Health and Safety Plan (HSP) and Endangerment Assessment Plan, asnecessary.

An Additional Landfill Gas Monitoring addendum was submitted to the agencies onSeptember 29, 1992 and comments were received in a letter from the U.S. EPA dated

November 19, 1992. A response to comments was prepared by Colder Associates andsubmitted in a letter dated December 4,1992. This revised addendum addresses agencycomments and approved modifications presented in the December 4, 1992 letter.

Procedures to perform additional soil gas measurements that are described in thisaddendum are planned to be implemented in the area south of the non-contiguous waste

area at the Edwards' Field Landfill and at locations outside selected existing perimeter gasprobes at the Yeoman Creek and Edwards' Field Landfills.

Colder Associates

January 1993 -2- 913-8083.205/913-8084.205

2.0 FIELD PROCEDURES FOR INSTALLATION AND SCREENING OF TEMPORARYSOIL GAS PROBES

The field program will involve the installation of temporary soil gas probes and Level 1

field screening analysis of soil gas using portable field instruments, including a

Combustible Gas Indicator (CGI) and a photoionization detector (FID). These instruments

will allow measurements of methane, H2S and volatile organic compounds (VOCs).

Screening is planned to be conducted in the winter when at least the first two inches ofground is frozen, if possible, and during a period of stable barometric pressure. The

barometric pressure will be monitored during the investigation and if a drop at a rate inexcess of 5 mb/hour (i.e., 0.15 inches of mercury/hour) is observed work will be

temporarily delayed until the barometric pressure stabilizes. Screening will be conductedat a minimum, in temporary soil gas probes located outside existing perimeter gas probeswhere readings greater than 5 percent of the LEL were obtained on the CGI during thetwo landfill gas probe screenings conducted in June and September, 1992. Data from the

landfill gas probes during these screenings are summarized on Tables 1 and 2. If resultsof the upcoming third round of gas probe screening indicate that additional existing

perimeter probes show CGI readings above 5 percent LEL, temporary probes will also be

installed at these locations.

At existing perimeter probe locations selected for investigation, temporary probes will beinstalled at progressively greater distances from waste along transects oriented

perpendicularly to the edge of waste until non-detect CGI readings (i.e., less than or equal

to 3 percent LEL) are obtained in two consecutive probes. The locations of landfill gasprobes that have exceeded the 5 percent LEL criterion and the proposed transects from

these probes are shown on Figure I. The initial temporary probe in each transect will be

within 10 feet of the edge of waste or an existing gas probe which has shown thepresence of landfill gas (i.e., greater than 5 percent LEL), unless physical obstructions or

buried utilities are present (a commercial utility survey will be conducted prior toinstallation of any probes). The spacing of subsequent probes in each transect will be 50feet unless specific site conditions (i.e. presence of physical obstructions or utilities)

prohibit the installation of a probe. If a probe cannot be installed at the 50 foot distance,the closest alternative location will be selected. The two perimeter gas probes, LFG-222

Oolder Associates

January 1993 -3- 913-8083.205/913-8084.205

and LFG-218, along the east and west sides of the Lovinger property at the YeomanCreek Landfill both show gas screening levels above the 5 percent LEL criterion. Sinceexisting site information indicates that gas is present east of this property, a transect is notincluded eastward from LFG-222. Instead, an alternate transect is planned northward(Figure 1) from the Lovinger property where there is currently no information.

Temporary probes will be installed at locations between perimeter gas probes in which5 percent LEL criterion has been exceeded and buildings located within 150 feet of theperimeter probes, unless landfill gas was also detected in the basement/erawlspace of thebuilding, or the building does not have a basement/era wlspace. If landfill gas has beendetected in the basement of the building, it is assumed that gas is present around thebuilding, and therefore, the temporary probes will be placed at 50 foot intervals on theopposite side of the building progressively further from the landfill until non-detect CGIreadings are obtained in two consecutive probes. The locations of these proposedtransects are also shown on Figure 1. No temporary probes will be placed around

buildings with basements if screening of intervening temporary probes shows that gashas not reached the building or the building has a sump with perimeter drains andscreening shows that gas is not entering through the tiles.

The equipment and procedures that will be used to install the temporary probes andcomplete the screening and the field procedures that will be employed are described inthe following sections.

2.1 Equipment and Materials

Equipment and materials required to conduct soil gas screening in the temporary probesshall include the following items:

Stakes and colored flagging;• Temporary steel gas probe(s);• Soil gas sampling and calibration ted la r bags;• Hammer for installation of probes. Depending on site conditions, a rotary

impact drill and 5/8 inch x 24 inch drill may be required for drilling a pilothole for installation of the temporary soil gas probe;

Golder Associates

January 1993 -4- 913-8083.205/913-8084.205

• Bentonite chips and potable water;• Barometer;• Decontamination water (i.e., commercially available distilled water for

decontamination of the soil gas probes);

• Reagent grade methanol for decontamination of the soil gas probes;• Alconox (or other equivalent, anionic, biodegradable detergent) for

decontamination of the soil gas probes;• Field documentation and support equipment, including sprayers, towels,

plastic bags, buckets, waste containers, and tools for decontamination andprobe assembly/disassembly;

• A peristaltic pump for purging the soil gas probes;

• Mechanical jack for removing the sampling probes from the access holes;

• Portable instruments for gas screening: CGI and PID;• Calibration gases for field screening instruments;

• Tape and compass; and• Materials needed to repair holes in asphalt or concrete.

2.2 Temporary Probe Installation

The installation of a temporary gas probe will typically involve the following sequence ofactivities:

Step 1: Assemble the sampling probe by first taping all fittings with non-adhesiveteflon tape (Note: the sampling probe must be completely decontaminatedprior to assembly according to the procedures outlined in Step 2 in Section2.4). Assemble one 5-foot section.

Step 2: If the surface at the sampling location is pavement or coarse fill, providean access hole for inserting the sampling probe by drilling a two foot deep,5/8 inch diameter hole at the sampling point with a rotary impact hammerand drill. Alternately, provide an access hole by driving a 5/8 inch solidsteel pilot probe to within 1 foot of the target sampling depth (typically 4feet).

Step 3: Place a removable steel drive point in the end of the temporary gas probeassembly.

Step 4: Drive the probe into the ground or into the access hole to a depth of 4feet, attach the removal jack to the probe and lift the probe out of theaccess hole about 1/2 inch to separate the probe tip from the end of theprobe and allow the soil gas to enter.

Oolder Associates

January 1993 -5- 913-8083.205/913-8084.205

Step 5: Seal the top of the annulus between the probe and the formation withhydrated bentonite chips.

If a portable generator is required, it will be positioned away from the immediate workingarea in a downwind direction from any sampling or analytical support activities. Also,

activities involving flammable or ignitable materials/vapors will be conducted at least 50

feet away from the generator. The generator will be positioned in a well ventilated area

and necessary precautions will be taken to avoid electrical shock.

2.3 Procedures for Gas Screening

The procedure for field screening using the portable instruments will include the

following steps: , ,

Step 1: Connect the peristaltic pump to the top of the installed probe and pumpuntil a minimum of 3 probe volumes has been removed, if possible.Purging details, including date, time and volume purged, shall be recordedin the field logbook.

Step 2: Record the barometric pressure.

Step 3: Attach an evacuated sampling tedlar bag to the exhaust of the pump.Open the valve to allow soil gas to enter the bag. Close the valve andremove the bag. Collect a duplicate once per day, at a minimum. Also,collect a minimum of one equipment blank (i.e. fill a tedlar bag bypumping through a decontaminated probe) and one ambient air blank (i.e.fill a tedlar bag with air using the pump) per day.

Step 4: Connect the filled tedlar bag containing the soil gas sample to thecalibrated CGI in scan mode and open the valve. Record the % LEL, %O2, """'and ppm H2S readings as the instrument scans. Close the valve andremove the bag.

Step 5: Connect the tedlar bag sample to the calibrated PID and open the valve.Record the stabilized and any peak instrument readings in ppm. Close thevalve and remove the bag.

The same analytical procedures will be followed for all samples including duplicates and

blanks. Maintenance, calibration and recaltbration of the field instruments shall beconducted according to the procedures and schedules provided in the approved RI/FS

Work Plan (FSP and QAPP) that are applicable to gas probe screening.

Golder Associates

January 1993 -6- 913-8083.205/913-8084.205

2.4 Temporary Probe Removal and Decontamination

Step 1: Remove the soil probe from the access hole with the mechanical jack andplug the hole with bentonite. Stake or mark the hole for a subsequenttape and compass survey.

Step 2: Once the probe is removed from the hole, it must be decontaminated priorto use at another location. The procedure for decontamination is asfollows:

Remove all teflon tape from the probe threads.

Remove soil particles from the interior of the probe with a narrowwire brush.

Rinse the probe exterior and interior with a solution of alconox anddecontamination water, scrubbing the interior and exterior withbrushes.

Rinse with decontamination water.

Rinse with reagent-grade methanol and finally withdecontamination water.

Allow the equipment to air dry. Immediately cover the probe endsand shaft with plastic to minimize the possibility of contamination.Once the probes are decontaminated, additional sampling maycontinue as described above.

2.5 Records

Soil gas screening activities shall be documented chronologically in bound logbooks. One

set of logbooks shall be dedicated to sample acquisition and onsite activity monitoring/

and shall provide a chronological record of onsite activities. Other supporting records

shall be retained in a temporary working file. Logbook entries shall be signed and dated

at the end of each day's activity, or upon transfer of logging responsibilities to otherpersonnel.

Golder Associates

January 1993 -7- 913-8083.205/913-8084.205

2,6 Health and Safety

The health and safety provisions for gas probe activities that are included in the approved

RI/FS Work Plan will be applicable during the installation and screening of the temporary

probes. In addition, the Field Manager shall conduct a daily briefing for project

personnel on site. The meeting shall address the proposed scope of the day's activities -

location, number, and type of samples to be taken; specific personnel assignments - andshall include a review of pertinent health and safety considerations.

Golder Associates

January 1993 -S- 913-8083.205/913-8084.205

3.0 SCHEDULE

Performance of the planned soil gas measurements at the Yeoman Creek and Edwards'

Field Landfills will begin after agency approval of this revised work plan addendum tocoincide to the extent possible, a period when the first 2 inches of ground at the site isfrozen and the barometric pressure is stable. It is currently anticipated that these

activities will be completed by the end of February, 1993 providing that significant delaysare not encountered due to property access difficulties.

(83200582.wpl/djf)

Goldor Associates

January 1993 913-8083.225

TAB LEI

RESULTS OF JUNE 1992 LANDFILL'GAS PROBE SCREENING

LandfillGas

Probe

LFG 101LFG 101

LFG 102

LFG 103

LFG 104LFG 104

LFG 105

LFG 106

LFG 107

LFG 108LFG 108

LFG 109

LFG 110LFG 110

LFG 111LFG 111

LFG 201LFG 201

LFG 202

LFG 203

Date

6-8-926-9-92

NA

6-8-92

6-8-926-9-92

6-9-92

6-9-92

6-9-92

6-9-926-9-92

6-9-92

6-9-926-9-92

6-8-926-9-92

6-8-926-9-92

6-8-92

6-8-92

Time

17471658

NA

1710

17271712

1115

1135

1154

12351744

1213

08281728

18101759

11471574

1000

1550

CGIMeasurement

%LEL

0.01.0

NM

> 100.0

2.01.0

> 100.0

14.0

> 100.0

2.02.0

> 100.0

1.02.0

4.03.0

2.02.0

> 100.0

> 100.0

PIDMeasurement

(ppm)

0.04.7

NM

1.9

0.80.0

1.5

0.0

6.6

0.00.0

2.8

0.00.0

1.50.6

0.00.0

3.2

0.8

PIDBackground

Measurement(ppm)

0.00.0

NM

0.8

0.80.0

0.0

0.0

0.0

0.00.0

0.0

0.00.0

0.80.0

0.00.0

1.8

0.8

FIDMeasurement

(ppm)

NM14.0

NM

NM

NM9.0

NM

NM

NM

NM12.0

NM

NM14.0

NM100.0

NM23.0

NM

NM

FIDBackground

Measurement(ppm)

NM9.0

NM

NM

NM9.0

NM

NM

NM

NM8.0

NM

NM8.0

NM7.0

NM6.0

NM

NM

Current NotesWater

Elevation(ft msl)

NWNW took reading from peristaltic outlet

649.37

NW

NWNW

NW

NW

NW

649.67649.67

NW

NWNW

647.93647.93

NWNW

NW

NW

(83200583.wql/dJO

January 1993 r 913-8083.225

TABLE 1

RESULTS OF JUNE 1992 LANDFILL GAS PROBE SCREENING

LandfillGas

Probe

LFG204

LFG205LFG205

LFG 206LFG206

LFG207LFG207

LFG208LFG208

LFG209

LFG 210

LFG211

LFG 212

LFG 213

LFG 214

LFG 215

LFG 216

LFG 217

LFG 218

Date

NA

6-8-926-9-92

6-8-926-9-92

6-8-926-9-92

6-8-926-9-92

6-9-92

6-9-92

6-9-92

NA

NA

6-9-92

NA

NA

6-8-92

6-8-92

Time

NA

15071351

14091510

13311456

16251403

1250

0945

1017

NA

NA

1045

NA

NA

1422

1055

CGIMeasurement

%LEL

NM

1.01.0

2.02.0

0.00.0

0.00.0

> 100.0

> 100.0

> 100.0

NM

NM

> 100.0

NM

NM

> 100.0

> 100.0

PIDMeasurement

(ppm)

NM

0.50.5

0.41.6

0.00.0

0.00.0

1.5

5.7

4.9

NM

NM

0.3

NM

NM

16.2

0.0

PIDBackground

Measurement(ppm)

NM

0.50.0

0.00.0

0.00.0

0.00.0

0.0

0.8

0.3

NM

NM

0.0

NM

NM

0.8

0.0

FIDMeasurement

(ppm)

NM

NM25.0

NM7.0

NM10.0

NM10.0

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

FIDBackground

Measurement(ppm)

NM

NM7.0

NM7.0

NM10.0

NM10.0

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

Current NotesWater

Elevation(ft msl)

651.53

NWNW

NWNW

NWNW

NWNW

NW

NW

655.% probe was making a hissing noise

656.61

658.70

NW

657.74

650.46

NW

NW

(83200583. wql/djf)

January 1993 913-8083.225

TABLE 1

RESULTS OF JUNE 1992 LANDFILL GAS PROBE SCREENING

LandfillGas

Probe

LFG219LFG219

LFG220

LFG221

LFG222LFG222

Date

6-8-926-9-92

6-8-92

6-8-92

6-8-926-9-92

Time

11201552

1325

1343

10351612

CG1Measurement

%LEL

5.02.0

32.0

2.0

6.05.0

PIDMeasurement

(ppm)

0.00.0

3.0

0.0

0.00.0

PIDBackground

Measurement(ppm)

0.00.0

0.0

0.0

0.00.0

FIDMeasurement

(ppm)

NM6.0

NM

NM

NM0.0

FIDBackground

Measurement(ppm)

NM6.0

NM

NM

NM0.0

Current NotesWater

Elevation(ft msl)

NWNW

NW

NW

NWNW

Notes:NM Not MeasuredNA Not ApplicableNW No Water in the Probe

(83200583.wql/djO c

rJanuary 1993 913-8083.225

TABLE 2

RESULTS OF SEPTEMBER 1992 LANDFILL GAS PROBE SCREENING

LandfillGas

Probe

LFG101

LFG 102

LFG 103

LFG 104

LFG 105

LFG 106

LFG 107

LFG 108

LFG 109

LFG 110

LFG 111

LFG 201

LFG 202

LFG 203

LFG 204

LFG 205

LFG 206

LFG 207

Date

9-2-92

NA

9-3-92

9-3-92

9-2-92

9-3-92

9-3-92

9-2-92

9-3-92

9-3-92

9-3-92

9-1-92

9-4-92

9-2-92

9-2-92

9-2-92

9-2-92

9-2-92

Time

1045

NA

1225

1022

1735

1105

1125

1709

1141

1205

1247

1158

1024

1556

1620

1436

1330

1131

CGIMeasurement

%LEL

0.0

NM

> 100.0

2.0

> 100.0

>100

> 100.0

1.0

>100

4.0

13.0

2.0

> 100.0

> 100.0

1.0

2.0

1.0

3.0

PIDMeasurement

(ppm)

1.7

NM

0.2-0.0

0.2

0.2-0.0

0.2-0.0

0.2

0.4

7.9

1.4

0.2

0.5

0.8

0.2 - 0.0

5.7

0.2

0.9

0.2

PIDBackground

Measurement(ppm)

0.2

NM

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.4

0.2

FIDMeasurement

(ppm)

35.0

NM

NM

20.0

NM

NM

NM

1.4

NM

15.0

NM

2-0

NM

NM

130.0

4.5

2.0 - 0.0

8.0

FIDBackground

Measurement(ppm)

20.0

NM

NM

10.0

NM

NM

NM

1.4

NM

8.0

NM

2.0

NM

NM

2.0

2.0

2.0

2.0

CurrentWater

Elevation(fl msl)

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

NW

NW

645.87

Notes

took reading from peristaltic outlet

water above screen

low oxygen level

water in probe

water in probe

Oxygen level was too low for FID

took reading from peristaltic outletlow oxygen leveltook reading from penstaltic outlet

water in probe

oxygen level too low for FID

(83200585. WQ1/DJF)

January 1993 913-8083.225

TABLE 2

RESULTS OF SEPTEMBER 1992 LANDFILL GAS PROBE SCREENING

LandfillGas

Probe

LFG208

LFG209

LFG210

LFG2I1

LFG212

LFG 213

LFG 214

LFG 215

LFG 216

LFG 217

LFG 218

LFG 219

LFG 220

LFG 221

LFG 222

Dale

9-2-92

9-2-92

9-2-92

9-2-92

9-4-92

9-4-92

9-4-92

9-4-92

NA

9-2-92

9-4-92

9-4-92

9-2-92

9-2-92

9-4-92

Time

105S

1508

1534

1457

0954

0933

0848

0914

NA

1243

1105

1126

1014

1216

1045

CGIMeasurement

%LEL

2.0

> 100.0

> 100.0

> 100.0

>100

>100

> 100.0

1.0

NM

> 100.0

> 100.0

2.0

2.0

2.0

78.0

PIDMeasurement

(ppm)

0.2

5.0

0.2 - 0.0

0.4

50.5

0.5

0.2-0.0

1.7

NM

0.9

3.5

0.5

0.7

0.2

0.5

PIDBackground

Measurement(ppm)

0.2

0.2

0.2

0.2

0.2

0.2

0.2

0.2

NM

0.2

0.2

0.2

0.2

0.2

0.2

FIDMeasurement

(ppm)

2.0 - 0.0

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

2.0

160.0

2.0-0.0

NM

FIDBackground

Measurement(PP«n)

ZO

NM

NM

NM

NM

NM

NM

NM

NM

NM

NM

0.0

2.0

2.0

NM

CurrentWater

Elevation(ft msl)

NW

NM

NM

656.33

NM

NM

NW

NM

649.87

648.49

NM

NM

NW

NW

NM

Notes:NM Not MeasuredNA Not ApplicableNW No Water in the Probe

Notes

oxygen level too low for FID

landfill gas blowing out of probe

took reading from peristaltic outletwater in probetook reading from peristaltic outlet

look reading from peristaltic outlet

oxygen level too low for FID

low oxygen level

(83200585. WO 1/DJF)

2,085.000 N .> .085.500

BUILDING INCLUDED 'NBASEMENT/CRAWLSPACE SCREENING

WATER

LANDFILL GAS PROBE HAVING SIGNIFICANTLANDFIU GAS CONCENTRATION 1st AND2n«J SCREENING EVENTS (SEE NOTES)

LANDFILL GAS PROBELOCAtlON

PROPOSED TEMPORARY GASPROBE IOCATTON

PROPOSED tftANSECT FOR ADDITIONALSOI GAS MEASUREMENTS

_ APPROWMATEWASTE "00UNOARY

NOTES:1. PROPOSED TRANSACTS HAVE 6E£N LOCATED ON

THE BASS OT THE in *4t> 2r>4 LANDFILLGAS PflOBS SCREEMW5BB. ' - < ^2. THE; HUMBEJ* A»M> tOCgtoN OF TRAJHSB'SROBE s^SSUS^Aflr evAtw*t*.

'•i,-^ , - ; ,-.- •;,.;. • - ."?¥'•" ' • ' ' ' . ' r • ' • - "/.- • ' - ' ' * " ^ . ' * -J ;̂,'"̂ frV;;;LC,4t̂ . ": '"'-'. •.-'--jI1,^",,rt' ^"\'"^-i J" W'-.. " ;- • ' - * ''

• flBBii-ffrf' ••••-••̂ ^dSeaia^

N 2,082,500 N 2,083.000 N 2,0*3.500 N 2.084,000 N. 2.

A II II II

•N

t»h L^-102

^

1J——V—————- __ _« __ __ __ y»*-~ —— —— LFG-103 \

/

J

O *

LFG-'^8*

ay-IDS

L^C-:oe*

-^\

JJJL

000' IV9

o D

aD

n H

b.

•ViiJ*-,̂ |4

g

tANDFlU GAS PSOBELOCATION

PROPOSED TEMPORARY GASPROSE LOCATION

PROPOSEDSOTL GAS

F« ADDlTONAL

. 1. PROPOSED TRANSACTS H*VE BEEN .OCATEtTHE BASIS OT TH£ Ijt AND 2nd LANDFILL

PR08E SCREENINGS.HUM9ER AND LOCATION Of TRANSECTSCHANGE WMEM RESUUTE Of 'HE 3-dPROBE SCREENfNG APE

N 2.085.000 N 2.085,500

200 200

SCALE IN

400 800

PHP/YBOMAN W-F8A

PROPOSED TRANSECTS FWSOIL GAS MEASUREMENTS

fTt) I r-rfThHHIdHHHHk,) I rrldhnH2.083,000,000 N 2,082,500 N 2.083.500 2,084,000

CHICAGO AE2140 S. WOL

DESPLWNES IL70B/298-

CAS PROJECT NUMBEDATE OF PHOTOtSRAFCONTOUR tNTtRVAL

;£•'>: i:;*'

fe-

3

r3IFi

1=)1

D

M 2,080,500 N 2.081.t»0 N 2,08 i ,500 N 2,082.000