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BACKGROUND <br /> A. SITE DESCRIPTION AND HISTORY <br /> The Kearney-KPF site, Stockton, San Joaquin County, California, was proposed <br /> by the U.S. Environmental Protection Agency (EPA) for the National Priorities <br /> List on June 24, 1988. On August 30, 1990, however, EPA removed the site from <br /> consideration for the NPL and placed it under the jurisdiction of the Resource <br /> Conservation and Recovery Act (RCRA) . <br /> Kearney-KPF, formerly known as KPF Electric Co. , is an active facility that <br /> began operations on the 11-acre site in 1951. From 1951-1965, most of the <br /> waste generated at the facility came from a silver-plating operation. In <br /> 1972, the company added a galvanizing operation, and wastes from both <br /> operations were disposed of in two unlined ponds until 1985. Between 1985 and <br /> January, 1986, rinse water was the only waste placed in the ponds. Those <br /> liquid wastes contained copper, iron, lead, mercury, cyanide, and highly <br /> acidic and alkaline rinse water. It is possible that solvent disposal and <br /> waste drums stored at the site have also introduced contaminants to soil and <br /> groundwater. Kearney-KPF currently disposes of its waste streams at permitted <br /> hazardous waste disposal facilities. No removal actions have been performed <br /> at the site. A closure plan, under RCRA, has been developed for the disposal <br /> ponds. <br /> B. SITE VISIT <br /> A site visit was conducted by Gregory Ulirsch, Environmental Health Engineer, <br /> ATSDR, and Gwendolyn Eng, Regional Representative, ATSDR. The Kearney-KPF <br /> facility was found to be completely surrounded by a 6-foot-high cyclone fence <br /> with barbed wire on top. Two gates were open to the parking lot during the <br /> site visit (i.e. , normal business hours) . The former disposal ponds were dry <br /> and mostly vegetated. The nearest residence was a farmhouse; the land <br /> surrounding it was used for livestock grazing and growing crops. <br /> C. DEMOGRAPHICS, LAND USE, AND NATURAL RESOURCES USE <br /> Within a 1-mile radius of the site, land use is industrial, commercial, <br /> residential, and agricultural. The closest residence is less than 100 feet <br /> northeast of the site. The closest school (Harrison School) is about a <br /> quarter of a mile east of the site. The closest park (Oak Park) is about a <br /> quarter of a mile west of the site. <br /> Groundwater within this 1-mile radius is used for domestic, agricultural, and <br /> industrial purposes. EPA estimates that 128,478 persons are served by ground- <br /> water wells within a 3-mile radius of the site (EPA, 1987) . Eighteen private <br /> (domestic or industrial) and seven municipal wells are within a 1-mile radius <br /> of the site. The municipal wells are operated by California Water Services <br /> (CWS) . The nearest municipal well (CWS-77) is about 200 feet south-southwest <br /> of the site. <br /> Some areas within a half-mile radius of the site may support wildlife. It is <br /> not likely, however, that animals frequent the site because the area <br /> 2 <br />