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E YVY <br /> LTC <br /> 4A S S 0 CI ATE S I N C . <br /> i, <br /> i <br /> Analytical results of soil samples are summarized in Table 1. Laboratory data sheets, chain-of- 1 <br /> custody documentation, and copies of chromatogram patterns are included in Appendix C. <br /> 4 <br /> i <br /> 5.0 DISCUSSION r <br /> Remote Fill Pipeline and Diesel Tanks <br /> Based on analytical results and field observations, soil in the vicinity of the remote fill pipeline <br /> does not appear to be 'impacted by diesel hydrocarbon constituents. Although SB 1 and S132 soil J <br /> ' samples contained concentrations of TPHd ranging from <1.0 to 7.5 ppm, the chromatogram <br /> pattern indicated the chromatogram pattern did not match that of a fresh diesel standard and the <br /> discrete peaks observed may or may not be naturally occurring organics in the soil. Due to the <br /> low concentrations of the unidentified hydrocarbon, the absence of BTEX compounds, depth to <br /> groundwater, and the fact that the site is capped with asphalt, this area does not appear to warrant <br /> additional investigation. <br /> Soil beneath the location of the former diesel USTs, in the immediate vicinity of S133, appears to <br /> be impacted by total petroleum hydrocarbons. However the impacted soiftM -Mc-e7ilm M <br /> vertically to, the upper 35 feet of the soil column and laterally to an area within approximately <br /> five to ten feet (as exhibited by sample 597, collected during the UST removal, and borings SB4 <br /> and SBS). Furthermore, no BTEX constituents were observed in the soil samples analyzed from <br /> borings SB3 through S135, depth to groundwater is estimated to be approximately et bgs <br /> and the site is capped with asphalt. Based on the above, this area does not appear to warrant <br /> additional investigation. i <br /> E: <br /> Gasoline Tanks <br /> I <br /> Of the fourteen soil samples collected from the vicinity of the former gasoline USTs, none were <br /> reported by the laboratory to contain TPHg, BTEX, or fuel oxygenates above laboratory <br /> detection limits. In the judgment of ATC, a ihona 1" inv stiga i 4, in the vicinity of the former <br /> gasoline USTs ' ,,ret-vvarrantedl. <br /> i <br /> - I <br /> i <br /> i <br /> w:1172921reportslsumwe1.doe <br /> i <br /> I <br /> l � <br />