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4.0 • CONCLUSIONS, RECOMMENDATIONS AND PROJECT STATUS � I Between March 7, and May 9, 2003, the groundwater surface rose an average of 0 09 feet, the ' groundwater flow direction shifted approximately 10 degrees toward the west, and the groundwater gradient increased from 0 0020 to 0 0068 foot/foot The groundwater flow direction and gradient have remained relatively consistent over the past four quarters Between March 7, and May 9, 2003, the concentrations of gasoline compounds in MW-2 increased As shown on the isoconcentration map for MTBE in groundwater (Figure 5), the lateral extent of MTBE at the water table is undefined to the south, west and east of the former UST Between March 7, and May 9, 2003, the free product thickness in MW-1 decreased from 0 45 feet to a sheen on un-measurable thickness Since the frequency of free product removal was reduced from weekly to monthly in June 2003, the free product thickness in MW-1 has increased to 0 10 feet and the product removal volumes have increased from 0 0 to 6 0 ounces On March 7, 2003, Ramage Environmental submitted to EHD, a site conceptual model and work plan, which proposed additional site investigation and remedial feasibility testing tasks On July 14, 2003, EHD approved the work plan Currently, implementation of the approved scope of work is pending cost pre-approval by the UST Cleanup Fund Ramage Environmental recommends that the proposed scope of work be completed, upon cost pre-approval by the UST Cleanup Fund In the meantime, quarterly groundwater monitoring and sampling, and monthly free product removal should continue 7