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y <br /> 4.0 CONCLUSIONS <br /> Concentrations of petroleum hydrocarbons decreased in source area wells MW-2 and MW-2A <br /> Benzene, toluene and ethylbenzene concentrations in MW-2 were similar to those detected in the <br /> previous quarter, but the total xylenes concentration decreased BTEX concentrations increased <br /> slightly in MW-2A No petroleum hydrocarbons were detected in upgradient well MW-9 These <br /> results are consistent with the seasonal variations observed with in increase in the water table over <br /> the past 2 years, except that the concentration of total petroleum hydrocarbons as gasoline has <br /> decreased Groundwater flows into a trough and then to the northeast with a horizontal gradient <br /> of 0 002 ft/ft <br /> I <br /> I <br /> I <br /> I <br /> LIPR0JECJ'S\S"J0QLHSAIIQ9WP r WPO 6 <br /> I <br />