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_Sw fir" M- 1 <br /> a3 <br />�xq <br /> I <br /> a� 4.0 I)ISGtJSSION <br /> 4.1 HydragcnEngy <br /> The ground-water flaw direction remains !o the South-southwest with :. gradient of 0.004 <br /> feet/feet (22.6 feet/mile). This is similar to flit November, 1990 and February, 199E data <br /> when the water table was at a lower level (Table 1). This higher ground-water level is <br /> probablydue to the significant precipitation received during the month of March, 1991. <br /> 4.2 Ground Water Analysis <br /> The recent significant precipitation event failed to generate any n asuntblr:concentrations <br /> of TI I-I-diesel or B,ri✓X in the ground water below the site. Soil containing; detectable <br /> concentrations of petroleum hydrocarbons that remains in the former tank area did not <br /> leach any hydrocarbons into the ground water below. Future precipitation events should <br /> dilute whatever petroleum hydrocarbons remain to even lower nondetectable concentrations. <br /> 8 <br /> i <br />