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4.0 Conclusions and Recommendations <br /> The groundwater at the site was determined to flow in a northerly direction, at a gradient <br /> between 0 013 and 0 023 The water level at the site has dropped by as much as 37 feet <br /> since April 1945 <br /> Groundwater samples collected from MW-5 and MW-6, surrounding the former UST <br /> excavation, yielded detectable concentrations of TPH as diesel, at concentrations of 84 and <br /> 210 µg/1, respectively No detectable concentrations of TPH as gasoline or BTEX were <br /> identified in any of the samples collected MW-4, the well closest to the tank pit, did not <br /> have any detectable concentrations of TPH diesel, TPH gasoline, or BTEX <br /> Based on the analytical results, it is recommended that quarterly groundwater monitoring be <br /> continued at the site to evaluate the TPH diesel detected in wells MW-5 and MW-6 <br /> MZJ09-20-951VDBF195-0027 NBR 41 <br />