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I Jonas & Associates Inc ' The highest TPH-G levels [111 and 190 parts per million (ppm)] encountered during that investigation were found in the standing water sampled from the borings Much lower TPH-G concentrations (1 to 42 ppm) were detected in soil samples collected from boring B-1, a few feet above the encountered water table No TPH-G were detected in soil samples collected from boring B-2 (PG&E, 1988) 3 1 2 BTEX - 1986 Analytical Results BTEX were detected (B = 4 8 ppm, T= 7 4 ppm, E = 7 4 ppm, X = 12 ppm) in a ' single soil sample collected at a depth of 9 5 feet from boring B-1 (north of the tank) BTEX were also detected in water samples collected from standing water in ' borings B-1 and B-2 (B = 31 and 3 8 ppm, T = 49 and 23 ppm, E = 21 and 6 1 ppm, X = 22 and 12 ppm, respectively) (PG&E, 1988) 3 1 3 Lead - 1986 Analytical Results I Total lead was found in soil samples at concentrations ranging from 7 to 11 ppm ' One water sample, collected from boring B-1, contained lead above the detection limit (6 6 ppm) (PG&E, 1988) 3 1 4 EDB and 1,2-DCA - 1986 Analytical Results Results also showed non-detectable levels of EDB and 1,2-DCA in all soil and water ' samples (PG&E, 1988) 32 1987 Through 1988 Investigations ' On October 22, 1987, the tank was removed by O H Materials, and the excavation was backfilled with imported soil Upon removal, no holes were observed in the ' tank, although some corrosion was evident on the tank walls Petroleum hydrocarbon odor was detected in the excavated material surrounding the tank (PG&E, 1988) ' An unknown quantity of soil was removed from the tank and pump island excavations, and replaced with clean fill The excavatio sn oil'was dCsp-""ose-, of off-i&- ' -tri-R approved landfill (PG&E, 1988) On June 24, 1987, a soil vapor survey was conducted by EA Engineering, to aid in ' delineating the horizontal distribution of volatile petroleum hydrocarbons in the area surrounding the UST (PG&E, 1988)