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fM '08 <br /> H. KLEINFELDER &ASSOCIATES <br /> r� <br /> x <br /> File: W-2006-1 <br /> December 16, 1985 <br /> Page 14 <br /> i <br /> €,y levels in the production well during the pump test, the <br /> transmissivity of the saturated zone could not be <br /> t, calculated. <br /> i+3 VIT. CONCLUSIONS <br /> 1 <br /> Soil <br /> Gasoline is present in the area soil at concentrations which <br /> exceed the state's current action level, which varies at 160 <br /> I"! or 1,000 mg/kg (depending on the region/County of the State). <br /> x The PTD readings and the analytical results indicate that <br /> i - <br /> E;9 <br /> soma form of remediation may be necessary in the area from <br /> the excavation area east. to. boring B-2, west to the first <br /> backhoe pit area and a few feet north of the excavation. <br /> Although gasoline is likely to be present in soil below the <br /> shop, remediation of these soils would prove to be extremely <br /> difficult and costly. <br /> The presence of hydrocarbons is indicated in the deeper <br /> portion of boring B-4, however, it is our opinion that the <br /> higher (150,ppmv) PID reading of soil samples collected at " <br /> 26 feet is due to entrapment of the hydrocarbons in the <br /> capillary fringe and/or in the upper surface of the ground <br /> ml water. .it would not be unexpected to see a significant <br /> ; y. variation in the water table, due In part to seasonal <br /> ----influences-but-most--likely-due to-the adjacent--surface water -- ---- ---- ---- - <br /> ":` Impoundment ,just north of the excavation site. Remediation <br />