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1 <br /> 50 CONCLUSIONS <br /> Excluding well MW-2, Second Quarter groundwater elevation decreased an average 0 14 feet since <br />' January 2003 Third Quarter groundwater elevation decreased and average of 0 25 feet since April <br /> 2003 Excluding well MW-2, contaminant concentrations in groundwater in the Second Quarter <br /> 1 demonstrated a continuing trend of decreasing concentrations throughout the Site Contaminant <br /> concentrations in groundwater in the Third Quarter increased throughout the Site Perimeter wells <br /> (MW-6, MW-8, and MW-9) and well AS-1 (screened approximately 10 feet below the water table <br />' fiom 40 to 45 feet bgs) did not contain benzene, TPHg, or MTBE above laboratory reporting limits <br /> for the Second and Third Quarter 2003 It appears the dissolved petroleum hydrocarbons in the <br /> source area are present within the upper 10 feet of the saturated zone and are laterally defined by <br /> perimeter wells MW-6, MW-8, and MW-9 <br /> i <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> • <br /> 1 <br /> S8643-06-01 -10- July 25,2003 <br /> 1 <br />