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Richardson Hill Road Landfill
Sidney Center, NY
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Larisa Romanowski - 518-747-4389
romanowski.larisa@epa.gov
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EPA added the Richardson Hill Road Landfill site, located in the Towns of Sidney and Masonville, Delaware County, New York to the Superfund National Priorities List on July 1, 1987 because hazardous chemicals were found in the site’s soil, sediment, and groundwater. The site consists of two sections, referred to as the “South Area” and the “North Area.” The South Area contains an 8-acre landfill, South Pond, and Herrick Hollow Creek. The North Area includes two small disposal trenches. In 1964, the Town of Sidney entered into a contract for the disposal of Town wastes at the landfill, including spent oils from the Scintilla Division of Bendix Corporation (predecessor to Honeywell International, Inc. and Amphenol Corp.). The landfill was in operation from 1964 to 1969.
As part of an immediate action in 1993, approximately 2,200 cubic yards of contaminated sediments from South Pond was excavated. In addition, seep interceptor collection basins upgradient of South Pond and a sediment trap weir system at the outlet of South Pond were installed to prevent the downstream migration of contaminated sediments. Also, two water supply treatment systems were installed at nearby homes with contamination in their wells attributed to the site.
An investigation to determine the nature and extent of the contamination at the site found the presence of polychlorinated biphenyls (PCBs) and volatile organic compounds in the soil, sediment, and groundwater. Based upon the results of a feasibility study which identified and evaluated remedial alternatives, in 1997, EPA selected a remedy for the site. The selected remedy consists of soil and sediment excavation/dredging, consolidation, on- and/or off-site disposal, disposal cell construction, installation of landfill cap, and groundwater extraction (North Area via extraction wells and South Area via an interceptor trench) and treatment. In 1998, the New York State Department of Health placed a consumption advisory for brook trout caught in the Herrick Hollow Creek.
Since 2003, the groundwater treatment plant construction, North Area recovery wells installation, groundwater interceptor extraction trench, excavation and backfilling/restoration of various areas with contaminated soil outside of the landfill footprint (approximately 7,350 cy of soil), excavation of approximately 28,520 cy of contaminated sediment, consolidation of excavated material on the landfill prior to capping, removal of the sediment trap weir systems (since all contaminated sediments upstream of the sediment trap wire system were removed), construction of a disposal cell, and construction of the landfill cap have been completed. In addition, from within the former waste oil pit, approximately 882 tons of soil with PCB contamination equal to or greater than 500 mg/kg were excavated and disposed/treated at an off-site facility and materials with PCB concentrations between 50-500 mg/kg were placed in the disposal cell.
The final stages of the remedial activities are estimated to be completed during the summer of 2008. The potential for exposure to contaminants at the site has been greatly reduced.
