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r <br /> 3.0 'CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> Between December 31, 2004 and March 21, 2005, the groundwater surface beneath the site rose <br /> an average of 2 74 feet The groundwater gradient configured using the shallow-constructed wells <br /> decreased from 0 00249 to 0 00162 foot/foot, and the gradient using the deep-constructed wells <br /> increased from 0 00302 to 0 00415 foot/foot The groundwater flow direction remained relatively <br /> consistent toward the northeast <br /> Groundwater from Irrigation Well#2 did not contain detectable concentrations of any of the <br /> gasoline compounds analyzed Groundwater collected from Irrigation Well #2 has been free of <br /> gasoline compounds for 20 consecutive quarters <br /> Between December 31, 2004 and March 21, 2005, the concentrations of gasoline compounds in <br /> the groundwater monitoring wells remained relatively consistent As shown on Figure 6, MTBE in <br /> groundwater appears to be limited to the groundwater table to the northeast (downgradient) of the <br /> former UST <br /> Based on these groundwater monitoring and sampling results, the plume of impacted groundwater <br /> appears to be stable and defined to the area immediately downgradrent of the former UST Despite <br /> the proximity of irrigation water supply wells in the area, no sensitive receptors appear to be <br /> threatened by the concentrations of gasoline compounds in groundwater beneath the site <br /> Based on these conclusions, Ramage Environmental recommends that San Joaquin County EHD <br /> and RWQCB consider this case for regulatory closure Until the case is closed, or unless otherwise <br /> directed by EHD, the monitoring well network will continue to be monitored and sampled on a <br /> quarterly basis <br /> 1 <br /> r <br /> r <br /> r7 <br /> i <br /> r <br />