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Record of Decision System (RODS)



Address:  HWY #48 
City & State:  BLOOMINGTON  IN  47401
County:  MONROE
EPA ID:  IND980614556
EPA Region:  05
NPL Status:  Currently on the Final NPL
ROD Type:  Amendment
ROD ID:  EPA/541/R-99/511
ROD Date:  03/29/1999
Operable Unit(s):  01
Abstract:  Neal's Landfill covers about 18 acres 4.5 miles west of Bloomington, Indiana. The site was used as an industrial and municipal waste landfill from 1950 to 1972. The main fill area measures about 300 by 300 yards. Later, the landfill was used as pasture for beef cattle. A number of springs surface near the site and flow 0.8 mile to Richland Creek, a tributary of the White River.

In 1966 and 1967, capacitors and arrestors containing Polychlorinated biphenyls (PCBs), as well as PCB-contaminated capacitor insulation material, rags, and filter clay, were disposed of at the landfill. Capacitors and other contaminated materials are visible on the surface. PCBs have been found in the surface soils in the northeast portion of the landfill, the springs near the site, sediments of Richland Creek, and fat from a calf that had grazed on the site.

On January 4, 1983, the United States filed a lawsuit against Westinghouse under CERCLA and the Resource Conservation and Recovery Act seeking preliminary and permanent injunctive relief. In 1985, EPA, the State, and the City of Bloomington entered into a consent decree with Westinghouse for the cleanup of six PCB contaminated sites in the Bloomington, Indiana area. The Consent Decree included the provision for construction and operation of a permitted incinerator for destroying PCB contaminated soil excavated from the site. Due to public opposition to the incinerator, the parties to the Consent Decree began evaluating other alternatives.

Negotiations as to settlement of a preliminary injunction motion are continuing.

During 1987, interim control measures were implemented by Westinghouse at the site, including; removal of visible capacitors and stained soils, installation of a two foot thick clay cap over primary landfill areas, installation of a locked chain-link security fence around the site, removal of sediments and creek banks along the entire 4,500 feet length of Conard's Branch, and installation of a spring water collection and activated carbon treatment system to treat PCB contamination at springs near the foot of the landfill.

Sampling of creek sediment and water, and fish in Richland Creek, demonstrates that the spring water treatment plant has abated the PCB loading to Conard's Branch and Richland Creek. In February, 1996, the parties submitted a schedule to the federal court that identified the specific steps needed to select alternative remedies for each of the six sites subject to the 1985 Consent Decree. In February, 1997, the parties submitted an amended schedule to the court.

Remedy:  Alt 4: Excav, Off-site disp, Consolid, RCRA Cap
The original remedy for Neal's Landfill called for the excavation of 320,000 cubic yards of polychlorinated biphenyls (PCBs) contaminated landfill material and treatment through the construction of a permitted, Toxic Substances Control Act (TSCA) approved, municipal solid waste-fired incinerator. The original remedy is being modified because the proposed incinerator cannot be built in time to dispose of all materials that are to be excavated and removed from the site, and in part by the concensus that an alternative is necessary. The modified remedy for the source control operable unit (OU) at Neal's Landfill consists of the following: Excavation and removal of selected areas of contamination contaminated with greater than 500 ppm PCBs, and disposal of the excavated landfill soils and materials in a TSCA approved, commercial chemical waste landfill. The estimated volume of material to be excavated is 7,000 cubic yards of material.

An additional 41,000 cubic yards of soil and materials will be excavated and sampled to determine if the excavated soil and materials are contaminated with greater than 500 ppm PCBs. If the excavated soil and materials are contaminated with greater than 500ppm PCBs, then the soil and materials will be disposed of off-site in a TSCA approved commercial chemical waste landfill. If the excavated soil and materials are contaminated with less than 500 ppm PCBs, then the material will be consolidated on the elevated rock surface in the center part of the landfill and capped.

The current 18-acre landfill footprint will be reduced to 10-acres by consolidation of excavated soils and materials contaminated with less than 500 ppm PCBs on the elevated rock surface in the center part of the landfill. It is anticipated that through this consolidation the possibility of back-flooding of PCB contaminated soil and materials will be reduced and perhaps eliminated.

All visible PCB contamination, such as capacitors, capacitor parts, and oil-stained soil and material shall be excavated from the landfill and disposed of at, or treated in, an off-site facility. Pursuant to TSCA requirements, capacitors containing PCB oil and any free oil will be incinerated in a TSCA compliant incinerator. Also, eight locations have been identified where capacitors were reburied during the interim
action and these capacitors will be excavated and disposed of by off-site incineration if they contain PCB oil.

A RCRA Subtitle C compliant cap meeting the permeability requirements of 1X10E-7 cm/sec will be constructed and placed over the consolidated 10-acre landfill to address the low level threat wastes remaining.

Areas outside the landfill cap and within the Site fence line may contain levels of up to 25 ppm PCBs on average with a maximum value of 50 ppm, but must be covered with 6-inches of clean soil cover. Areas located in drainage waterways outside the cap will be remediated to 1 ppm PCBs. Although no known areas outside the fence at Neal's Landfill are contaminated, if it appears that contamination is present outside the fence line, the area will be remediated to residential/high occupancy PCB standard of 5 ppm with a 6-inch soil cover.

A long-term inspection and maintenance plan of the landfill cap along with groundwater and surface water monitoring program for governmental parties approval also will be developed.

Estimated capital cost: Not provided
Estimated Annual O&M cost: Not provided
Estimated Present Worth Cost: Not provided
Estimated Cost: $16.13 million
Text:  View full-text ROD [ 179K ]
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