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GeoStrategies Inc. 0 UNOCAL Corporation September 11, 1992 Page 4 0 Peng,Trenches Soil samples UT-1 through UT-4 were collected from the bottom of the piping trenches on January 14, 1992 and witnessed by a representative from SJCPHS The samples were collected at a depth of between 2 and 3 feet below grade and were analyzed for TPH-Gasoline, BTEX, total lead and EDB Samples UT- 1 and UT-4 were also analyzed for Waste Extraction Test for lead (WET lead) The locations of these samples are shown on Plate 3 and the sample collection depths are presented in Table 1 TPH-Gasoline, benzene and EDB were reported as ND for samples UT-1, UT-2 and UT-4 Sample UT-3 contained 150 ppm TPH-Gasoline, 81 ppm benzene and was ND for EDB Total lead concentrations varied from 7 1 ppm to 180 ppm Samples UT-1 and UT-4 contained 12 ppm and 2 7 ppm WET lead, respectively Chemical analytical data are summarized in Tables 1 and 3 Hydraulic Lifts • Soil samples SL-1 and SL-2 were collected from beneath each of the hydraulic Iifts on February 25, 1992 The samples were collected at a depth of approximately 7 feet below grade and were analyzed for TPH-Diesel and TPH- Oil The location of these samples are shown on Plate 3 and the sample collection depths are presented in Table 1 0 Samples SL-1 and SL-2 were ND for TPH-Diesel and TPH-Oil Chemical analytical data are summarized in Table 1 Oil-Water Se arator Soil sample SOW-1 was collected approximately 6 feet below grade beneath the I oil-water separator on February 25, 1992 The sample was analyzed for TPH- Gasoline, Diesel and Oil, BTEX, O&G, CL HC, ICRP Metals and PCBs The sample location is shown on Plate 3 and the sample collection depth is presented in Table 1 Sample SOW-1 contained 9 6 ppm total lead and was ND for TPH-Gasoline, TPH-Diesel, TPH-011, BTEX, O&G and PCBs Chemical analytical data are summarized in Tables 1 and 3 782701-1