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16 3.0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> Between August 25, and December 31, 2004, the groundwater surface beneath the site rose an <br /> average of 0 96 feet The groundwater gradient configured using the shallow-constructed wells <br /> decreased from 0 00256 to 0 00249 foot/foot, and the gradient using the deep-constructed wells <br /> decreased from 0 00396 to 0 00302 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 19 consecutive quarters <br /> Between August 25, and December 31, 2004, the concentrations of gasoline compounds in the <br /> groundwater monitoring wells remained relatively consistent MTBE in groundwater appears to be <br /> limited to the groundwater table to the northeast (downgradient) of the former UST Groundwater <br /> sampled from the downgradrent well MW-BB was free of gasoline compounds for the second <br /> consecutive quarter <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 /> recommends that San Joaquin County Based on these conclusions, Ramage Environmental q ty 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 /> I <br />