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Ms. Margaret Lagorio <br /> San Joaquin County <br /> July 24, 1995 <br /> Page 3 <br /> Four soil gas samples will be collected from around the perimeter of the concrete wash <br /> area, the drain to the pond, and in the ditch behind the storage area. Soil gas samples <br /> will be field screened using a PID. Soil samples will be collected from adjacent <br /> locations and will be analyzed for TPH with characterization of peaks and CAM 5 <br /> metals. <br /> Water Retention Pond <br /> The water retention pond receives surface water runoff from the entire facility. Any <br /> compounds present in surface runoff will eventually end up in the pond and may <br /> infiltrate to groundwater. <br /> One soil boring will be drilled to groundwater, anticipated to be at approximately 130 <br /> feet bgs and one groundwater sample collected using the Hydropunch technique. The <br /> groundwater sample will be analyzed for TPH with characterization of peaks, <br /> herbicides, pesticides, and VOCs. <br /> Former Waste Oil Storage Area <br /> This area was used for draining oil from parts and storage of used oil prior to <br /> recycling. Substantial soil staining is present at this location. <br /> Soil gas samples will be collected from two locations in the stained area and will be <br /> field screened with a PID. Soil samples will be collected at adjacent locations. Sample <br /> locations will be in the center and at the edges of the visibly stained areas. Soil <br /> samples will be analyzed for TPH with characterization of peaks and CAM five metals. <br /> Paint Storage Area <br /> Paints, gasoline, and solvents are stored in a converted sea/land shipping container. <br /> One soil gas sample will be collected near the doorway and field screened using a PID. <br /> One soil sample will be collected from an adjacent location and analyzed for 17-Title <br /> 22 metals and TPH with characterization of peaks. <br /> Battery Storage Area <br /> Batteries are currently stored on a pallet in the unpaved storage area. One soil sample <br /> will be collected within six inches of the ground surface and analyzed for total lead. <br /> South and East Perimeters <br /> The southern and eastern perimeters of the project site are used for employee parking <br /> and storage of miscellaneous parts and equipment. Past usage is unknown. Soil gas <br /> samples will be collected from five locations along the perimeter and will be field <br /> V1111IHYDRO-SERRCH, IMC. A Tetra Tech Company <br />