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r <br /> 1 <br /> 3.0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> 1 <br /> Between March 23, and June 29, 2005, the groundwater surface rose an average of 0 72 feet, the <br />' groundwater gradient decreased from 0 0143 to 0 0104 foot/foot, and the groundwater flow <br /> direction remained toward the northeast These groundwater surface characteristics are <br />' consistent with historical and seasonal trends <br /> Between March 23, and .tune 29, 2005, gasoline compounds in groundwater generally decreased <br />' at MW-1, and remained relatively consistent at MW-2 and MW-3 Concentrations of gasoline <br /> compounds in groundwater at MW-1 have generally declined, since the monitoring wells were <br />' installed in July 2002, probably due to source removal efforts and natural attenuation processes <br /> Since March 2004, concentrations of MTBE have been detected in the perimeter wells (MW-2 and <br /> MW-3) As such, it appears that MTBE has migrated away from the source area in the <br /> downgradient direction, and that the extent of impacted groundwater is undefined <br />' Ramage Environmental recommends that the plume of impacted groundwater continue to be <br /> monitored on a quarterly basis If the concentrations of MTBE in the perimeter wells continue to <br /> r <br /> increase, it may be necessary to expand the groundwater monitoring well network <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> r <br /> r <br /> r <br /> • <br /> r <br /> r <br />