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February 23, 2024


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Lindane Dump/ALSCO Park Superfund Site


On Wednesday, March 18, 1998, representatives of the EPA hosted a public meeting at the Harrison Township Municipal Building in Natrona Heights to explain the objectives and projected timeline of the cleanup of the Lindane Dump/ALSCO Park Superfund Site. The site occupies land on Springhill road opposite the Harrison Municipal Building.

EPA added the Lindane Dump/ALSCO Park Site to the National Priorities List (NPL) in 1983. The NPL is EPA's list of the nation's most serious uncontrolled or abandoned hazardous waste sites identified for possible long-term cleanup action under the Superfund program.

The Lindane Dump/ALSCO Park Superfund Site is located in Harrison Township, Allegheny County, Pennsylvania, about 20 miles northeast of Pittsburgh. The site consists of the Natrona ALSCO Community Park which is about 14 acres in size and a 43.5 acre lower project area, which includes a closed landfill.

Between 1850 and 1960, Pennsylvania Salt Manufacturing Company (the predecessor of Penn Walt Company and Elf Atochem North America Inc.) owned and operated an industrial and chemical waste-disposal facility on the site. From 1900 to 1950, approximately 400 tons of powdered Lindane pesticide waste and other industrial wastes were dumped at the site, and surrounding soil. Lindane is a white crystalline organic solid that is used in several ways as a pesticide, including to protect wood from certain beetles, to dip for fleas and lice on pets and to treat trees and vegetables.

In 1965, predecessors of the Allegheny Teledyne Corporation purchased the site and disposed of construction wastes, industrial waste, treatment plant sludge, coke, rubber tires and slag at the site until the mid-1980s.

In 1972, the Allegheny Ludlum Corporation donated the ALSCO Park area to Harrison Township.

EPA added the Lindane Dump/ALSCO Park Site to the National Priorities List (NPL) in 1983.

In 1984, the park was closed due to site contamination and an interim leachate collection / treatment system was installed. Contamination was still spreading at the site. As a result, EPA issued a Record of Decision (ROD) for the Lindane Dump/ALSCO Park Superfund Site on March 31, 1992. The ROD outlines all of the cleanup activities that are scheduled to take place at the site in the near future.

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