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3.0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> Between March 21, and June 30, 2005, the groundwater surface beneath the site rose an average <br /> ' of 1 91 feet The groundwater gradient configured using the shallow-constructed wells decreased <br /> from 0 00162 to 0 00057 foot/foot, and the gradient using the deep-constructed wells decreased <br /> from 0 00415 to 0 00348 foot/foot The groundwater flow direction remained relatively consistent <br /> ' 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 21 consecutive quarters <br /> Between March 21, and June 30, 2005, the concentrations of gasoline compounds in the <br /> groundwater monitoring wells generally decreased As shown on Figure 6, MTBE in groundwater <br /> appears to be limited to the groundwater table to the northeast (downgradient) of the 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 downgradlent 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 /> 7 <br /> 1 <br />