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3 0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS <br /> Between March 26, and June 6, 2003, the groundwater surface beneath the site dropped an <br /> average of 2 09 feet, the groundwater flow direction remained consistently toward the northwest, <br /> and the groundwater gradient increased from 0 0015 to 0 0026 foot/foot <br /> Between March 26, and June 6, 2003, the concentrations of petroleum hydrocarbons detected in <br /> groundwater, including TPH-as-diesel, TPH-as-gasoline and BTEX compounds, remained <br /> relatively consistent The oxygenate compounds and 1,2-DCA continued to be below laboratory <br /> detection limits Since the three monitoring wells were installed in December 2000, the <br /> concentrations of petroleum hydrocarbons in groundwater have generally declined, probably in <br /> response to source removal and natural attenuation processes <br /> As shown on Figures 4, 5, and 6, the lateral extent of impacted groundwater at the groundwater <br /> table is mostly defined for TPH-as-diesel, undefined for TPH-as-gasoline, and fully defined for <br /> benzene Impacted groundwater appears to be concentrated beneath the former USTs and to <br /> the west and northwest (i e , downgradient) of the former USTs <br /> toOn May 8, 2003, Ramage Environmental published Work Plan, Additional Site Investigation and <br /> Groundwater Monitoring Report, First Quarter 2003 EHD approved the work plan on June 3, <br /> 2003 Currently, implementation of the approved scope of work is pending cost pre-approval by <br /> the UST Cleanup Fuad <br /> 9 <br />