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January 19, 2022



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Lindane Dump/ALSCO Park Superfund Site

Cleanup Plans
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.

Representatives of Elf Atochem detailed plans for the cleanup and addressed the concerns of approximately 50 residents who attended the meeting. Allegheny Teledyne Corporation, Elf Atochem North America, Inc. and Harrison Township are potentially responsible parties (PRPs) for the site. Elf Atochem North America, Inc. is conducting all of the cleanup work under a Consent Decree with EPA.

Cleanup plans, which are to commence March 31, 1998 and continue for approximately 2 years, include:

Multi-Layer Cap

A multi-layer clay-and-soil cap will be installed over the park and part of the site's lower project area. The cap will slow the flow of water in the site's soil, thereby reducing the movement of contents.

Park Facilities

As part of the site cleanup, the existing park facilities will be dismantled and removed. Then, completely new facilities including two asphalt tennis courts, two ballfields, a pedestrian walk and a parking lot will be built.

Treatment System

An upgraded leachate and groundwater collection and treatment system will be installed in a 9,100 square foot building on the southern side of Karns Road, next to the current interim leachate collection and treatment system. After the system treats the leachate, the contaminants will be collected and disposed of in a permitted facility. The treated groundwater will be released to the Allegheny River. Once the new treatment system is operating, the interim system that was constructed in 1984 will be dismantled and removed.

Monitoring Program

A monitoring program to make sure the new treatment system and multi- layer cap are working properly also will be implemented.




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