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United Heckathorn Superfund Site

Richmond, CA

Client: CH2M Hill - EPA

The United Heckathorn Superfund Site is located in the Richmond Harbor and includes five acres of land and about 15 acres of marine sediments in the Lauritzen and Parr Channels. Contaminants from the activities of several companies that formulated, packaged, and shipped pesticides at this location from the mid-1940s to mid-1960s persist on this site. In March 1990, the United Heckathorn site was listed on the Federal Superfund List and the EPA directed cleanup efforts including dredging and capping upland areas.

Unfortunately, recent water and sediment sampling efforts have shown that contaminant levels are again on the rise, likely from subterranean leeching.  In support of the EPA’s site investigation, DMS was contracted for the collection of 30 cores advanced to 6ft below mud-line target penetration. The objective of the investigation is to define the nature and extent of DDT distribution in the sediment.