The 10-acre Gould, Inc. site is located in Portland, Oregon. A secondary lead smelter and lead oxide production facility operated at the site from 1949 until 1981. Site activities included on-site disposal of about 87,000 tons of battery casings and discharge of about six million gallons of acid into a nearby lake. These activities contaminated debris, soil, lake sediment and surface water with hazardous chemicals. Following cleanup, EPA took the site off the Superfund program�s National Priorities List (NPL) in 2002. Groundwater monitoring is ongoing.