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BOONE COUNTY
BELVIDERE
Congressional District # 16
MIG/DEWANE LANDFILL
EPA ID# ILD980497788Last Updated: December, 2008
Site Description
The MIG/DeWane 50-acre site, consisting of a landfill and leachate impoundment, is located approximately one-fifth mile east of Belvidere, Boone Co., Illinois. The site was operated by various entities from 1969 until its abandonment in 1988 by M.I.G. Investments, the last operator. The permitted municipal landfill received municipal, commercial, industrial, and household wastes. In 1984, a U.S. EPA inspection determined that the landfill waste and leachate were contaminating groundwater, soil, and sediments, and that the potential existed for surface water contamination and direct exposure of humans to contaminants. In 1989, an Illinois Environmental Protection Agency (IEPA) inspection found exposed waste and many leachate seep flows with some leachate flows extending offsite towards the Kishwaukee river.
The inspection also determined that the leachate surface impoundment was about to overflow and breach with the possible potential to cause a serious environmental impact to the river. Approximately 1,500 people live within one mile of the site. On March 29, 1991, an administrative order on consent (Consent Order) was signed by IEPA, U.S. EPA, and 16 potentially responsible parties (PRPs):
- Browning-Ferris Industries,
- Chrysler Corp.,
- Midwest Industrial/G&K Services,
- Aratex Services,
- The Ingersoll Milling Machine Co.,
- Rockford Drop Forge,
- Camcar Division of Textrom,
- Borg-Warner,
- ITW Shakeproof,
- George B. Smith Color,
- Moline Corp
- Frink's Industrial Waste,
- Laidlaw Waste Systems,
- Amerock Corp.,
- Marengo Foundry Corp.,
- Litton Industrial Automation/Disc Grinders & Abrasives.
Potentially Responsible Parties are those parties EPA has determined may be legally responsible for the site contamination. Since March 1991, a total of approximately 45 PRPs have signed the RI/FS Consent Order. The Consent Order included an agreement by the PRPs : (1) to conduct interim cleanup actions; (2) to conduct a study into the nature and extent of the site contamination, called a Remedial Investigation (RI); and (3) to conduct a study of long term site cleanup options, called a Feasibility Study (FS).
The dates when additional PRPs signed onto the Consent Order include December 18, 1991, April 28, 1993, and August 2, 1995. The RI report was finalized in July 1997. In February 1999 the FS was completed. A Consent Decree for the RD/RA between the State of Illinois and the PRPs was filed in January 2006.
Site Responsibility
This site is being addressed through PRP work being conducted under a a state enforcement agreement.Threats and Contaminants
Sampling conducted during the RI determined that the contamination in soil, groundwater, sediments, leachate, and landfill gas includes volatile organic compounds (VOCs) and semi-VOCs, pesticides, polychlorinated biphenyl (PCBs), and inorganic (metal) compounds. A plume of groundwater contaminated with VOCs, semi-VOCs, and inorganics was detected, moving towards the river.Cleanup Progress
An emergency action to remove the leachate from the surface impoundment began in May 1989. To date, approximately 400,000 gallons have been removed. During final cleanup actions, the surface impoundment will be completely removed.
The March 1991 Consent Order required that the site be stabilized prior to the start of the remedial investigation (RI) through numerous interim remedial actions (IRMs). The IRMs occurred from June 1991 to February 1993 and included installation of a security fence around the entire site; removing 50,000 gallons of leachate-contaminated ponded water from the top of the landfill and 240,000 additional gallons of leachate from the surface impoundment; excavation of 3,500 cubic yards of offsite leachate-contaminated soil; backfilling; placement of an interim cap; topsoil placement, seeding, and the construction of temporary erosion controls both onsite and offsite.
Early in 1999, landfill gas monitoring wells were installed along the western boundary of the soil borrow pit property west of and adjacent to the landfill. These monitoring wells detected landfill gas (methane) in the soil borrow pit. In late April and early May 1999, gas extraction wells, an interceptor trench, and flair system were installed and activated to remove landfill gas migrating offsite. Also, gas and groundwater sampling probes were installed in the Wycliffe Estates subdivision west of the landfill. Sampling for gas and VOCs in the subdivision was implemented.
A record of decision (ROD), signed on March 31, 2000, documented EPA's selection of long term remedial action for the site that included construction of a multilayer cap; the active and passive management of landfill gas; the installation of a localized leachate collection system; the removal of leachate and sediments from the leachate surface impoundment; and the monitored natural attenuation of groundwater.
In December 2000, an addendum to the baseline risk assessment for methane and VOCs, migrating from the site, was completed. Using the collected groundwater and soil gas data, the Risk Assessment Addendum determined that the risk and hazard estimates were significantly lower than those presented in the March 1997 Baseline Risk Assessment and were less than U.S. EPA thresholds. These estimates indicated that as long as methane and VOCs in both groundwater and soil gas concentrations remain less than or equal to the levels measured from late 1999 to mid-2000, the indoor air pathway does not present an exposure pathway of concern. Overall, the methane gas levels have continued to decline from 2000 through 2003. Most gas levels have reached non-detect levels.
Negotiations on the RD/RA Consent Decree continued from 2000 through 2003. On September 22, 2000, Special Notice Letters (SNLs) were sent to Owner and Operator PRPs. An informational meeting with PRPs occurred in October 2000. During this meeting and a subsequent meeting, a Draft RD/RA Consent Decree and Statement of Work was submitted to the PRPs. In early February 2001, IEPA and the Illinois Attorney General's Office sent out a second round of SNLs to a second group of PRPs (municipalities, generators, and transporters). Late in March 2001, an information meeting was held with the PRPs. Throughout 2001, more than 1,000 PRPs negotiated among themselves to form a new PRP work group and undertake settlements for many of the PRPs. These activities occurred to reduce the number of PRPs in the group to a more manageable number for RD/RA Consent Decree negotiations and remediation work. Negotiations among the PRPs were concluded in late spring 2002. Throughout the remainder of 2002, the PRP group continued to negotiate among themselves and the state of Illinois.
The consent decree for the RD/RA was filed in January 2006. Currently, the performing parties are developing the Remedial Design work plan. The PRP contractor is planning to begin installing gas wells and vents at the landfill in November 2008.
Contacts
Remedial Project Manager, U.S. EPAhoward caine (caine.howard@epa.gov)
(312) 353-9685
Community Involvement Coordinator, U.S. EPA
janet pope
(312) 353-0628
Aliases
MIG INVESTMENTBONUS LDFL
DEWANE LDFL (MIG)