Two areas included in the 360 acres are not considered part of the NPL site because they are being addressed under other authorities.
Access is restricted by the river and by a chain link fence and security guard.
The site is directly underlain by an unconsolidated alluvial aquifer. The alluvial aquifer that underlies the site supplies drinking water to about 2,900 people. Operations on the southern portion of the site included the production of chlorine and sodium hydroxide by electrolytic mercury decomposition in mercury cells in saltbrine and chloromethane by reacting methanol with anhydrous hydrochloric acid. Sources on the site include surface impoundments, landfills, waste piles, container storage areas, contaminated soil, and outfalls. Hazardous substances contained in the five evaluated waste sources include mercury, methylene chloride, chloroform, carbon tetrachloride, tetrachoroethene, trichloroethylenene, and 1,1,2-trichloroethane.