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3.0 CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS Between June 25, and August 27, 2004, the groundwater surface beneath the site dropped an average of 121 feet, the groundwater gradient increased from 0 0025 to 0 0031 foot/foot, and the groundwater flow direction remained toward the north Between August 27, and December 29, 2004, the groundwater surface beneath the site rose an average of 4 43 feet, the groundwater gradient increased from 0 0031 to 0 0035 foot/foot, and the groundwater flow direction remained toward the north These groundwater flow direction and gradient characteristics are consistent with seasonal and historical trends Between June 25, and December 29, 2004, the concentrations of petroleum hydrocarbons detected in groundwater, including TPH-as-diesel, TPH-as-gasoline and BTEX compounds, generally increased The oxygenate compounds and 1,2-DCA continued to be below laboratory detection limits Since the three monitoring wells were installed in December 2000, the concentrations of petroleum hydrocarbons in groundwater have generally declined, probably in response to source removal and natural attenuation processes As shown on the isoconcentation maps (Figures 5 through 9), the lateral extent of impacted groundwater at the groundwater table is undefined for TPH-as-diesel and TPH-as-gasoline, and mostly defined for benzene Impacted groundwater appears to be concentrated beneath the former USTs, and to the west and north (i e , downgradjent) of the former USTs On May 8, 2003, Ramage Environmental published Work Plan, Additional Site Investigation and Groundwater Monitonng Report, First Quarter 2003 EHD approved the work plan on June 3, 2003 Currently, implementation of the approved scope of work is pending the availability of funding within the county budget 9