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Page 3 Waste Oil Tank Sampling Soil samples WO-W and WO-E were collected from the native soil approximately 7 1/2 feet below grade beneath the ends of the waste oil tank (Figure 2 ) . Each sample was collected by digging approximately 1 to 2 feet beneath the bottom of the tank into native soil with an excavator bucket and then collecting the sample from the bucket as described above. Trench Samoling Trenches were excavated to expose and remove underground product piping and vent lines extending from the fuel UST complex to the service islands . Soil samples P-1 through P-4 were collected after piping was removed at a depth of approximately 3 1/2 to 4 feet below grade respectively (Figure 2) . Samples were collected from the excavator bucket as described above. These samples were collected from locations designated by William Snavely and in accordance with the Tri-Regional Water Quality Control Board San Joaquin County Public Health Services recommendations . Sump and Hoist Sampling Two semi-hydraulic hoists and an oil/water separator (sump) were removed and discrete soil samples were collected from beneath the sump and hoists at approximately 7 1/2 feet below grade. Soil samples were designated "Hoist" and "Sump" and were located as shown in Figure 2 . The sump and western most hoist were next to each other and are represented by the discrete sample designated "Sump" . Stockpile Sampling Soils generated during the fuel UST removal activities were stockpiled and sampled. Approximately 300 cubic yards were generated from the removal of the USTs and piping. Samples designated SP-la-b through SP-6a-b were collected from the fuel UST and piping stockpiles (Figure 2 ) . Soils generated from the waste oil tank, sump and hoist excavations are characterized by samples designated WSP-la-c and represents approximately 40-50 cubic yards of soil (Figure 2) .