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V � Ms. Margaret Lagorio San Joaquin County July 24, 1995 Page 2 on all samples from collection to acceptance by the analytical laboratory. Soil and groundwater samples will be analyzed using EPA methodology. Volatile organic compounds (VOCs) will be analyzed using EPA Method 8240, Title 22 metals using EPA 6010/7000 series, organochlorine pesticides and PCBs using EPA Method 8080, and chlorinated herbicides using EPA Method 8150. Total petroleum hydrocarbons (TPH) with characterization of peaks will be analyzed using EPA Method 8015, modified to identify and quantify the sample against diesel, JP fuel, kerosene, motor oil, and paint thinner standards. TPH as gasoline (TPH-G) will be analyzed using EPA Method 8015; benzene, toluene, ethyl benzene, and total xylenes (BTEX) will be analyzed using EPA Method 8020; and organic lead will be analyzed using DHS/LUFT methodology. Drill cuttings and purge water will be placed in containers and will remain on-site until receipt of analytical results and determination of appropriate disposal. Soil and water disposal will be the responsibility of FMC Corporation. Augered soil borings will be backfilled to ground surface with a cement/bentonite grout through a tremie pipe. Soil probe borings will be backfilled with bentonite. Ramacher Manufacturing, Linden The investigation areas for this site include the concrete aprons outside the rollup doors, the storage/wash area, the water retention pond, the former waste oil storage area, the paint storage area, the battery storage area, the south and east perimeters, the unpaved storage area, and the paint shop area. Proposed sample locations are shown on Figure 1 . Proposed number of sample locations, depths, and analyses are shown on Table 1 . Concrete Aprons Outside All Rollup Doors Oil stains are apparent on the soil surface around the perimeters of the concrete aprons outside all rollup doors at the facility. Soil samples will be collected using the Geoprobe system at a minimum of one location at each rollup door. Soil samples will be taken from two locations from the perimeter of the concrete pad in the equipment repair area. The soil samples will be analyzed for TPH with characterization of peaks. Storage/Wash Area This area formerly contained fuel and lubrication supplies and is now used to wash equipment. Parts and equipment are washed using cool water or a steam cleaner. The wash area drains to the perimeter ditch which drains into the water retention pond. Staining is apparent around the edges of the pad and in the perimeter ditch. 111 HYDRO-SERRCH,II IC. A Tetra Tech Company