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1 i 5. Field Sampling Plan 5.1.Objectives The objective of the Field Sampling Plan (FSP) is to summarize the proposed field sampling activities necessary to calculate the risk at the site to indoor air and exposure to soil. To determine the risk,the presence and the vertical and lateral extent of potential contaminants at the site must be characterized. Potential contaminants of concern in the soil vapor are VOCs. Potential contaminants of concern in the soil are VOCs, SVOCs, metals and dioxins/furans. 5.2.Background The former Kearney-KPF facility is located at 1624 E. Alpine Avenue in Stockton, California. It comprises 12.6 acres and includes five buildings (Figure 2). These buildings consist of an office building, the former Manufacturing Plant,Warehouse,Foundry, and Galvanizing Building. There is an office trailer on west side of Galvanizing Building, an office trailer south of Warehouse Building and over TP-2A, and three elevated buildings over former Pond 2. A small building was erected in 2002 to house the UV/OX equipment associated with the groundwater treatment system. Kearney no longer owns the Site. The current owner, Alpine Builders, Inc.,rents space to various businesses. These businesses engage in trucking, equipment storage, auto repair, and construction. 5.3.On-site/Off-site Sources Prior to 1986 two topographic low spots were used for disposal of liquid wastes generated from manufacturing operations. Rinse waters and spent acid and caustic solutions were discharged to the ground south of the galvanizing building, "Pond 1". Silver plating rinse water containing some dissolved chlorinated solvents and metal was discharged to a shallow Swale west of the manufacturing building, "Pond 2". Both former"ponds" were closed with an engineered clay cover after removal of soil that posed a potential leaching hazard to groundwater. The extent of the covers installed over the former"ponds" is depicted in Figure 2. Additional waste disposal areas included a trash burning cage operated in the 1950's and 1960's (located in the vicinity of monitoring well KI-3), an area along the east side of Pond 2N where small quantities of spent degreasing solvents were placed on the soil and an area south of the Foundry where foundry sand was spread on the soil surface. A drum storage area was located along the driveway between the Galvanizing Building and the Manufacturing Plant. A dry well was located approximately 150 feet south-southeast of the former Galvanizing Building. The locations of these former potential source areas are shown on Figure 2. Soil Gas and Soil Sampling Work Plan—Rev.4 7693-05 Former Keamey-KPF Facility Dudek Stockton,CA 10 September 2013