The Arlington Plating Company (APC) site (Site) is the location of a former metal plating facility. The Site is a building located at 4001-4007 Goodfellow Boulevard, St. Louis, MO. The building is located on property that is adjacent to commercial/light industrial properties on Goodfellow Boulevard and adjacent to residential properties on the west side. A portion of the structure that makes up the Site houses an auto alarm security business. Past operations at the Site by APC include metal cleaning, nickle and chrome plating, and electro polishing. During these operations hazardous wastes were generated.