EPA Region 5 Records Ctr.

TetraTech EM Inc. HS™

200 E. Randolph Drive, Suite 4700 + Chicago, IL 60601 * (312) 856-8700 + FAX (312) 938-01 18

November 17,2000

Mr. Thomas AlcamoWork Assignment Manager (SR-6J)Remedial Response Unit No. 1U.S. Environmental Protection Agency Region 577 West Jackson BoulevardChicago, IL 60604

Subject: Field Oversight Summary for October 23 through November 3,2000Lemon Lane Landfill Site, Bloomington, IndianaContract No. 68-W7-0003, Work Assignment No. 044-RXBF-0529

Dear Mr. Alcamo:

Tetra Tech EM Inc. (Tetra Tech) has prepared the enclosed field oversight summary to document itsremedial action oversight activities at the above-referenced site from October 23 through November 3,2000. CBS Corporation, the responsible party for the site, conducted the remedial action activities.Appendix A of the field oversight summary contains a photographic log of Tetra Tech's field activities,and Appendix B contains a copy of Tetra Tech's oversight field notes.

If you have any questions about the enclosed summary, please call me at (847) 818-7189.

Sincerely,

Raj RajaramSite Manager

Enclosure

cc: Steve Nathan, EPA Project Officer (letter only)David Alberts, EPA Contracting Officer (letter only)Tom Kouris, Tetra Tech Program Manager (letter only)

contains recycled fiber and is recyclable

ENCLOSURE

FIELD OVERSIGHT SUMMARY FOROCTOBER 23 THROUGH NOVEMBER 3, 2000

LEMON LANE LANDFILL SITEBLOOMINGTON, INDIANA

(Four Pages)

FIELD OVERSIGHT SUMMARYLEMON LANE LANDFILL SITE

BLOOMINGTON, INDIANA

Tetra Tech Oversight Personnel: Brian Lenihan and Greg YoungReporting Period: October 23 through November 3, 2000

INTRODUCTION

As requested by the U.S. Environmental Protection Agency (EPA), Tetra Tech EM Inc. (Tetra Tech) is

conducting oversight of remedial action (RA) activities at the Lemon Lane Landfill site in Bloomington,

Indiana, under Contract No. 68-W7-0003, Work Assignment No. 044-RXBF-0529. CBS Corporation

(CBS) is the responsible party for the site. PSARA Technologies (PSARA) is CBS's consultant; WRS

Environment and Infrastructure, Inc. (WRS), is CBS's site remediation contractor; American Drill ing

Services (ADS) is CBS's drilling contractor; Envirocon Systems. Inc. (Envirocon), is CBS's

geomembrane liner contractor; and Colder and Associates (Colder) is PSARA's landfill cap consultant.

This report summarizes Tetra Tech's oversight observations from October 23 through November 3, 2000,

and discusses issues and developments during the reporting period and future activities at the site.

Appendix A contains a photographic log of field activities, and Appendix B contains a copy of Tetra

Tech's oversight field notes for the reporting period.

OVERSIGHT OBSERVATIONS

Tetra Tech's oversight observations of RA activities at the site from October 23 through November 3,

2000, are summarized below.

Monday, October 23,2000

Tetra Tech arrived at the site at 8:00 a.m. WRS was excavating in the southwest retention pond area and

was using the excavated material to backfill locations in the southwest portion of the landfill . At

8:30 a.m., ADS arrived at the site to install four piezometers in the landfill. Two piezometers (PZ) were

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to be placed in the northwest section of the landfill (PZ-BD in grid F6 and PZ-BS in grid G8) and two

more in the southwest section of the landfill (PZ-AD in grid D18 and PZ-AS in grid F16). At 12:00 p.m.,

WRS finished excavating grid CIO. Tetra Tech then inspected this grid and found no problems. WRS

placed protective sand cover over backfilled and consolidated areas of the landfill. Such activities

continued throughout the day. Envirocon received landfill cap materials at the site during the day. Tetra

Tech left the site at 4:30 p.m.

Tuesday, October 24, 2000

Tetra Tech arrived at the site at 6:00 a.m. At 6:45 a.m., WRS began loading Toxic Substances Control

Act (TSCA) material for off-site disposal and continued placing protective sand cover over backfilled and

consolidated areas of the landfi l l . These activities continued throughout the day. At 9:30 a.m., ADS

continued with piezometer installation at the site; piezometer installation was completed at 11:30 a.m.

Envirocon received landfill cap materials at the site during the day. Tetra Tech left the site at 3:00 p.m.

Monday, October 30,2000

Tetra Tech arrived at the site at 12:15 p.m. The geocomposite layer (GCL) and geomembrane had been

placed over about 40 percent of the landfill, mostly on its north side. Envirocon continued installation of

the GCL and geomembrane. WRS graded locations in the southwest corner of the landfill and excavated

the perimeter drainage ditch on the south side of the site. Tetra Tech left the site at 4:30 p.m.

Tuesday, October 31,2000

Tetra Tech arrived at the site at 8:30 a.m. At 8:40 a.m., WRS began excavating the perimeter drainage

ditch in the southeast corner of the landfill. A hoe-ram was used to dislodge a bedrock knob at the base

of the drainage ditch (see Photograph No. 1). At 9:15 a.m., Envirocon started laying the GCL in the east-

central portion of the site (see Photograph No. 2). At 10:00 a.m., WRS watered the haul road as a dust

control measure. At 10:25 a.m., Envirocon started placing geotextile material across the perimeter

drainage ditch on the east side of the landfill (see Photograph No. 3). At 10:45 a.m., Envirocon installed

the geomembrane above the GCL used for the drainage ditch (see Photograph No. 4). Tetra Tech

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observed the welding of geomembrane seams (see Photograph No. 5). Landfill cap installation and

various drainage ditch excavation and grading continued throughout the day. Tetra Tech left the site at

4:30 p.m.

Wednesday, November 1,2000

Tetra Tech arrived at the site at 7:30 a.m. WRS continued drainage ditch excavation on the south and

west sides of the landfill, and Envirocon continued installing the GCL and geomembrane. These activities

continued throughout the day. At 2:00 p.m., Tetra Tech observed destructive and nondestructive seam

testing of the geomembrane welds (see Photograph No. 6). During destructive seam testing, the tensile

and shear strength of a weld is tested by attempting to pull the weld apart. Nondestructive seam testing

involves injecting air into a welded seam and then measuring the drop in air pressure over a 5-minute

period. This test is used to evaluate the continuity of the weld. Colder reported that all welds tested to

date had passed both destructive and nondestructive seam testing. Tetra Tech left the site at 4:30 p.m.

Thursday, November 2,2000

Tetra Tech arrived at the site at 7:30 a.m. At 8:00 a.m., WRS began excavating the drainage ditch on the

west and northwest sides of the landfill, and Envirocon continued installing the GCL. These activities

continued throughout the day. At 11:15 a.m., Tetra Tech observed destructive seam testing of

geomembrane welds (see Photograph No. 7). The welds observed passed the minimum requirements for

tensile and shear strength. Tetra Tech left the site at 4:30 p.m.

Friday, November 3, 2000

Tetra Tech arrived at the site at 7:30 a.m. At 8:00 a.m., WRS started excavating in the retention pond

area on the southwest side of the site and started grading the protective cover on the southwest side of

the site. At 9:00 a.m., Envirocon began installing the geonet layer above the geomembrane. These

activities continued throughout the day. At 1:00 p.m., WRS began installing a length of concrete drainage

pipe in the drainage ditch on the southeast side of the site (see Photograph No. 8). By mid-afternoon, the

GCL and geomembrane had been installed over about 75 percent of the landfill (see Photographs No. 9

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and 10), and the geonet had been installed over about 60 percent of the landfill. Tetra Tech left the site at

3:00 p.m.

ISSUES AND DEVELOPMENTS

By the end of the reporting period, all TSCA material had been excavated and removed from the site.

Installation of the landfill cap commenced during the week of October 23, 2000. All landfill cap

installation and testing activities observed by Tetra Tech during the reporting period were conducted in

accordance with specification in the landfill cap installation work plan.

FUTURE ACTIVITIES

Tetra Tech will continue to provide RA oversight at the site as directed by EPA. The RA activities at the

site are scheduled to be completed by December 8, 2000.

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APPENDIX A

PHOTOGRAPHIC LOGLEMON LANE LANDFILL SITE

(Five Pages)

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Photograph No. 1 Location: Lemon Lane LandfillOrientation: South Date: October 31, 2000Description: WRS removing bedrock obstruction from southeast drainage ditch

Photograph No. 2Orientation: EastDescription: Envirocon installing GCL on east side of landfill

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Location: Lemon Lane LandfillDate: October 31,2000

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Photograph No. 3 Location: Lemon Lane LandfillOrientation: Northeast Date: October 31, 2000Description: Envirocon installing geotextile across perimeter drainage ditch

\Photograph No. 4Orientation: NorthDescription: Envirocon installing geomembrane over GCL

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Location: Lemon Lane LandfillDate: October 31,2000

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Photograph No. 5 Location: Lemon Lane LandfillOrientation: Northeast Date: October 31, 2000Description: Envirocon welding seam between two panels of geomembrane

Photograph No. 6 Location: Lemon Lane LandfillOrientation: East Date: November 1, 2000Description: Envirocon conducting nondestructive seam testing of geomembrane weld

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Photograph No. 7 Location: Lemon Lane LandfillOrientation: North Date: November 2, 2000Description: Envirocon conducting destructive seam testing of geomembrane weld

Photograph No. 8 Location: Lemon Lane LandfillOrientation: Southeast Date: November 3, 2000Description: WRS installing concrete pipe in southeast drainage ditch

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Photograph No. 9Orientation: NortheastDescription: Southwest side of landfill

Location: Lemon Lane LandfillDate: November 3, 2000

Photograph No. 10Orientation: EastDescription: North side of landfill

Location: Lemon Lane LandfillDate: November 3, 2000

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APPENDIX B

OVERSIGHT FIELD NOTESLEMON LANE LANDFILL SITE

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