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Master Disposal Landfill

Site Information
Contact Information

Community Involvement Coordinator
Susan Pastor (pastor.susan@epa.gov)
312-353-1325 or 800-621-8431, ext. 31325

Remedial Project Manager
Sheila Sullivan
312-886-5251 or 800-621-8431, ext. 65251

WDNR Site Manager
Thomas Wentland
(wentland.thomas@wisconsin.gov) 920-892-8756


(where to view written records)

Brookfield Public Library
1900 N. Calhoun Road


The Master Disposal Service Landfill site is located at 19900 W. Capitol Dr. in the town of Brookfield, Waukesha County, Wisconsin. It occupies a 40-acre parcel of land, with 26 acres comprising an inoperative landfill. The site is on the marshy floodplain of the headwaters of the Fox River, which flows southwest into Illinois. About 1.4 million cubic yards of waste, including 1.5 million gallons of industrial waste such as solvents, paints, adhesives, oils, and foundry waste, were disposed of at the site when it operated between 1967 and 1982. The site was partially closed in 1982, but the cover materials used at the time came from an on-site source with inadequate clay content. Erosion of the cap and subsequent re-exposure of waste materials became a problem.

Cleanup of the landfill and ground water was completed by 1997. For the landfill, a gas control system was installed and a landfill cover and ground water pump and treat system were built. For the ground water, an extraction system was built using 11 wells to discharge water into a large pond west of the site.

Two formal status reviews in 2000 and 2005 ensured the cleanup was still protecting people and the environment. Based on findings from the 2005 review, another cleanup decision was made two years later. This 2007 decision documented EPA's final ground water cleanup plan which included natural recovery to remove remaining benzene, regular testing, and the re-activation of the pump and treat system if it appears that contamination might move off-site.

Site Updates || Technical Documents || Legal Agreements || Five-Year Reviews

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Site Updates

August 2015

EPA completed a review of the site's cleanup. This type of review is required at least every five years where the cleanup is complete but hazardous waste remains managed on-site. These reviews are done to ensure that the cleanup continues to protect people and the environment.

The review included:

The review found the cleanup continues to protect people and the environment. The next scheduled review will be in 2020.

Technical Documents

Legal Agreements

Five-Year Reviews


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