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Morita Brothers Service Station 5 November 6, 1992 Table 1 presents a summary of the analytical results for TPPH as gasoline, the gasoline constituent volatile aromatics, EDB, and total lead in the twelve soil samples from beneath the fuel tanks, product pipelines, and excavation stockpiles TABLE I Analytical Results expressed in milligrams per kilogram Sample Depth TPPH Benzene Toluene Ethyl- Total EDB Total Gasoline benzene Xylenes Lead TK-1N 12' ND ND ND ND ND ND 3 4 TK-1S 12' 210- ND ND 0 15 0 203 ND 6 .4 TK-2N 12' 980 0* 1 665* 6 335* 0 800 11 335 NA NA TK-2S 12' 2,250 0* 5905- 14 330* 1 215 44 935* NA NA TK-3N 12' 80 0* ND ND ND ND NA NA ' TK-3S 12' ND ND ND ND ND NA NA PN-1 3' 50 0* 12* 19* 4 8 8 0 ND 840 PS-2 3' ND ND ND ND ND ND 5 0 PC-3 3' ND ND ND ND ND ND 42 SPE-I 3' 8 0 0 007 0 015 0 080 0 303 ND 270 SPE-2 3' 320- 001 1-028 1 0 54 __t----2-84 ND 240 SPW 3' 120 0* 006 14* 1 3 60 ND 150 AL I NA 10 067 10 68 175 002 15/10001 r * exceeds current recommended guidelines A L Regional Water Quality Control Board recommended guidelines for contaminants in soil The recommended guidelines were calculated using the LUFT methodology by multiplying the most stringent current federal or state water quality standards by a tactor of loo to account for attenuation due to soil composition and distance from groundwater Table 2 presents a summary of the analytical results for TPPH as gasoline, TEPH as diesel, the fuel constituent volatile aromatics, EDB, PCBs, and total lead in the soil ' sample from beneath the waste oil tank ' TABLE 2 Analytical Results expressed in milligrams per kilogram ' m 1 Depth TPPH TEPH TRPH Volatft IDB F(:B_a I Total Gasoline Diesel o&G Aromatics Lead TK-4 9' ND ND 400 ND ND ND 25 0 AL NA 10 100 1,000 NA 1 002 NA 511000 ' EB-8101-3 9210-EOSS RPT ■