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Record of Decision System (RODS)



Address:  SW1/4 OF NW1/4 SEC8 T7N R8E 
City & State:  MIDDLETON  WI  53562
County:  DANE
EPA ID:  WID980610604
EPA Region:  05
NPL Status:  Currently on the Final NPL
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-95/281
ROD Date:  06/28/1995
Operable Unit(s):  01
Media:  groundwater
Contaminant:  VOCs, tetrachloroethane, trichloroethane, vinyl chloride, benzene, chloroform, 1,2-dichlorethane, cis-1,2-dichlorethene, 1,2-dichloropropane
Abstract:  Please note that the text in this document summarizes the Record of Decision for the purposes of facilitating searching and retrieving key text on the ROD. It is not the officially approved abstract drafted by the EPA Regional offices. Once EPA Headquarters receives the official abstract, this text will be replaced.

Refuse Hideaway Landfill (RHL) is located in the town of Middleton, Wisconsin. The 1.2 million cubic yard landfill containing municipal, commercial and industrial waste is located in a rural portion of the town of Middleton, two miles west of the city of Middleton and four miles east of the village of Cross Plains. According to the 1990 census, there are 3,628 people living in the town of Middleton.

RHL is located in the easternmost section of the upper Black Earth Creek drainag basin. The drainage basin has an area of 46 square miles in Dane County. Black Earth Creek is a highly productive trout stream in southern Wisconsin and is unique for its natural reproduction of wild brown trout. Wild brown trout comprise almost all of the trout population in the upper Black Earth Creek. Non of the fish in the creek are known to be endangered or threatened. A 1985/86 study of Black Earth Creek indicated that the stream ecosystem is being stressed These stresses include sediment accumulation, low dissolved oxygen concentration increased stream temperature and dense macrophyte growth.

Land use in the area surrounding the landfill is diverse. The landfill property itself, outside the fill boundary, is currently being rented by the landfill owner to a sand and gravel company as a storage area for truck and construction equipment. The north and west sides of the landfill property are bounded by a Christmas tree farm, while the remaining area surrounding RHL is predominantly agricultural with field corn and other dairy support crops being the most common output. A small wetland area is located southeast of the landfill. Several large dairy farms and many other minor dairy farms are located in the vicinity o the landfill. In addition, several residences are located near the landfill. Most homes are located adjacent to County Highway 14 or in the Deer Run Heights Subdivision to the southwest of the landfill.

Private water supply wells provide water for the residences and agricultural use in the RHL area. Approximately 53 homes are within one mile of the site. Three private wells downgradient of the landfill have had volatile organic compounds detected in them. One of these residences is currently vacant while two others have treatment systems in place to treat the documented groundwater contamination.

When the owner and operator of the landfill began operations in 1974, the main engineering requirement was that at least ten feet of soil was maintained betwee the waste and the bedrock and that the waste be covered daily. Due to careless maintenance of the landfill, daily cover requirements and operations were not performed as required. As a result, the entire waste volume was exposed to leaching by rain and snow melt throughout the operating history of the landfill. The landfill owner reported receiving a variety of commercial and industrial wastes including: full barrels of glue and paint, barrels of ink and ink washes, spray paint booth by-products and paint stripper sludge, and spill residue containing volatile organic compounds (VOCs). In addition, large volumes of municipal wastes from cities and towns in Dane County were also disposed of at the landfill.

The landfill was closed under court order in May 1988. At that time, the landfill was covered with a six inch grading layer of coarse soil over the waste followed by two feet of clay soils. Two and a half feet of general soils were placed over the clay and six inches of topsoil, seeded and mulched, finished the cap. The final cover was completed in October 1988. After this, the owner of the landfill claimed bankruptcy and was unable to undertake additional remediation of the landfill. In early 1989, the state of Wisconsin undertook th continued remediation and investigation of the site, as well as all operation an maintenance activities.
Remedy:  The selected remedies involve three alternatives. These alternatives protect th public from direct contact with waste, control emissions from the landfill, and remove and control contaminants within the aquifer and provide reliable potable water if additional private home water supplies become contaminated.

The first alternative, source control limited action, involves adding deed restrictions/zoning and perimeter signs to the site. The existing soil cap will be maintained and operation and maintenance of the existing gas/leachate system will occur. Monitoring of 21 groundwater wells and 12 private homes for volatil organic compounds will continue.

The second alternative is groundwater extraction and treatment with reinjection to enhance natural breakdown of contaminants. Four groundwater extraction wells will be installed on the west and south sides of the landfill and pump a total o 45 gallons per minute. Water will be treated to meet discharge standards and will be reinjected into the aquifer through two injection wells located east of the landfill. This option avoids discharge of water into Black Earth Creek, a cold water trout fishery.

The third alternative involves supplying individual water treatment units. This is contingent upon the area of groundwater contamination moving and additional homes becoming contaminated. Point-of-entry treatment units will be installed a homes that become contaminated or are imminently threatened with contamination. Currently, these systems are successfully treating water at two homes downgradient of the landfill.
Text:  View full-text ROD [ 147K ]
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