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1 lV! X57- 4-141 I7c7 i IU,ZO i ""a avii+Jvwvr. • -• <br /> ` c <br /> groundwater investigation. A,review of the availableaWytical data from previous investigations <br /> cin be summarized as follows: <br /> 1. Petroleum hydwearbom and BTEX compowrda went never detected in any of the 10 <br /> groundwater samples collected from four on-site monitor wells and two Hydnopunch <br /> groundwater samples. <br /> 2. All oanhwunated soil beneath the Weed OR and Formulated Chl tanks was ,removed <br /> during the tank fmoval process. <br /> 3. Fud related contamination beneath the g wWie tank was removed to a depth of 31 feet <br /> by (completed in October 1986). <br /> 4. Petroleum hydrocarbons and BTEX compounds were not dewed is fetor soil borings <br /> adjacent to the gasoline tank excavation at sample depths of 41.5 feet bgs (1956 soil <br /> boria,gs 31-3 and B-4), and at depths of 45 ft., 50 ft., and 55 ft.. bgs (1994 soil borings <br /> SB-3 and SB-4). <br /> S. Petroleum hydrocarbons and BTEX compounds appear to be present in a limited area <br /> be am%the farmer gasoline stomp tank at depths greater than 31 ft. bgs, and at 20 ft. <br /> bgs its the SB-2 arm Although petroleum owtuttations were elevated at the 31 ft. <br /> depth directly below the former gasoline tank, subsequent soil data indieates the <br /> moons decrease to less than 0.0098 mgfkg for BTEX compounds and 0.014 <br /> mglkg fbr TPH as gasoline at 50 ft. bgs in adjacent borings (SH-1 and SB-2). <br /> Analytical data irAc Mm Ow the groundwater beneath this site hays not bow impacted by <br /> petroleum products released from the underground storage tank. Soils at the site are <br /> conuirdnoW with low concentraticros of petroleum products at depths greater than 31 ft. bgs to <br /> approxinuddy 54 ft. bgs, although amx=trafions are new the analytical medwd dcwtkm limit <br /> at the 50 ft. depth. <br /> b <br />