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i <br /> ' 5 V <br /> i <br /> indicated concentrations of BTEX compounds at 112, 18 0, 18 2, and 419, respectively <br /> Sample KB5 indicated concentrations of BTEX compounds at 6 58, 38 6, 40 1, and 53 15 <br /> mg/kg, respectively <br /> ' Dunn tank removal between March and April, 1988 a significant amount of soil was <br /> During P � a � <br /> ' excavated from the Site A March, 1991 letter from the SJCPHS stated that an approximate <br /> 1350 cubic yards of impacted soil was excavated and removed from the Site Later <br /> ' correspondence questions the exact amount of Site soil excavated Soils within the tank <br /> excavation were removed to a depth of 30 feet The results, reported by Apphed Geosystems <br /> ' (Report Subsurface Investigation, No 38012-5, Applied Geosystems, December 12, 1990), <br /> indicated that TPHg in soil samples taken from the excavation, with one exception, ranged <br /> ' from less than 2 to 38 mg/kg and concentrations of benzene ranged from nondetect to 172 <br /> mg/kg One soil sample, T-1, taken from the west end of the tank excavation at 16 feet below <br /> ' ground surface (bgs) indicated a TPBS concentration of 582 mg/kg and benzene (B), toluene <br /> (T), ethylbenzene, and total xylenes (X)concentrations of 0 60, 6 50, 10 40, and 39 10 mg/kg, <br /> respectively A soil sample taken from beneath the product line was found to have a TPH, <br /> concentration of 6 mg/kg No benzene was detected in the product line sample After <br /> additional excavation was conducted, a soil sample taken from 26 feet bgs indicated a TPHg <br /> concentration of 13 mg/kg and BTEX concentrations of 0 29, 107, nondetect, and 132 <br /> mg/kg, respectively No hydrocarbons were detected beneath the waste oil tank <br /> Between June 1988 and February 1992, Applied Geosystems (AGS) and RESNA <br /> ' Industnes installed 11 soil bonngs(identified as B-1 through B-11) Seven of the borings were <br /> completed as monitoring wells (identified as MW-1 through MW-7) and three were completed <br /> ' as soil vapor extraction (SVE) wells (identified as VW 1 through VW-3) Monitoring Wells <br /> MW 1, MW-2, MW-3, and MW 6 are located within the Site property boundaries and Wells <br /> i <br /> MW-4, MW 5, and MW-7 are located northeast (downgradient) of the Site The SVE wells <br /> are located in the vicinity of the former product islands <br />