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Mr Paul Supple Project 20805-140 003 Apn130, 1998 Page 7 The soil sample collected from beneath the waste oil UST was below method reporting hnuts for TPHG, TPHD, BTEX, MTBE, HVOCs, and PCBs The sample contained concentrations of chronuum, nickel, and zinc at 9 6, 5 0, and 25 mg/kg, respectively Piping Excavation and Dispenser Soil Samples Low concentrations of TPHG and BTEX were detected in soil samples PL-3, PL-10, and PL-17 collected from the piping trenches Detected TPHG concentrations in soil samples collected beneath the first and second sets of piping at depths of 3 to 4 feet bgs ranged from 13 to 12 mg/kg, respectively The detected benzene concentrations ranged from 0 0054 to 0 03 mg/kg, and detected MTBE concentrations ranged from 0 26 to 0 51 mg/kg Petroleum hydrocarbons did not exceed method reporting limits in other piping excavation soil samples In addition, soli sample D-1 collected from the former dispenser location contained TPHG, benzene, and MTBE concentrations of 6 4, 0 0058, and 0 62 mg/kg, respectively Analytical results for samples D-2 through D-4 were below method reporting limits Oxygenates analyzed using USEPA Method 8260 did not exceed laboratory method reporting limits in piping excavation or dispenser soil samples See Table 1 for analytical results and the appendix for copies of certified analytical reports Soil Stockpiles Soil stockpile SP-1 contained approximately 250 cubic yards of soil generated from the gasoline UST excavation, and stockpile SP-2 contained approximately 11 cubic yards of soil generated during the removal of the waste oil UST In addition, stockpile SP-3 contained approximately 40 cubic yards of soil from the former dispenser and product piping trenches Analytical results of the five two-point composite samples collected from stockpile SP-1 contained concentrations of TPHG ranging from 2 2 to 19 mg/kg Benzene was below the method reporting limit, and MTBE, using USEPA Method 8020, ranged from below the method reporting lnrut to 0 94 mg/kg MTBE, using USEPA Method 8260, was detected in samples SP-1-2A/2B and SP-1-5A/5B at concentrations of 0 270 and 0 250 mg/kg, respectively Tertiary butanol was also detected in sample SP-1-5A/5B at a concentration of I1 mg/kg Stockpile SP-2A/2B contained concentrations of TPHD, TOG, and tetrachloroethene at 21, 610, and 0 096 mg/kg, respectively Chromium, nickel, and zinc were also detected in sample SP-2A/2B at concentrations of 17, 21, and 30 mg/kg, respectively SAON\PJft805\08051400 3FS-98\pzusmer 1 ;VCMK C&