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v depth of approximately 30 feet below grade and subsequently converted to groundwater monitoring wells. Monitoring well and soil boring locations are shown on Figure 2. Laboratory analysis of soil samples collected from the three borings determined that petroleum hydrocarbon constituents were detected in the soil within 4-5 feet of the static water levels at the site. Laboratory analysis of groundwater samples collected from the wells subsequent to development indicated that gasoline constituents were present above laboratory method detection limits in the groundwater samples collected from each site monitoring well. Initial groundwater monitoring data (March 1992) determined groundwater flow direction to the south. A detailed discussion of the initial subsurface investigation can be found in RESNA's "Interim Problem Assessment Report, Soil and Groundwater Contamination," dated June 8, 1992. Soil groundwater analytical results are summarized in Table 1 and 2, respectively. In July 1994, a RESNA field geologist observed the drilling of four additional groundwater monitoring wells (MW4, MW5, MW6, and MW7) at the site to further characterize subsurface conditions. Groundwater samples collected from these additional wells contained no detectable petroleum hydrocarbons. A detailed discussion of the Phase II Subsurface Investigation can be found in RESNA's "Summary Report, July 1994 Investigation,"dated August 26, 1994. To further evaluate the extent of residual soil contamination in the vicinity of the former underground fuel storage tank(UST), Smith Technology supervised the advancement of four soil borings (SB-1, SB-2, SB-3, and SB-4) on February 29, 1996 to depths of approximately 16 to 26 feet bgs. Total petroleum hydrocarbons as gasoline (TPHg), benzene, toluene, ethylbenzene, and xylenes (BTEX) were detected above method detection limits at low to moderate concentrations in samples collected at depths between 10 and 15 feet bgs in borings SB-1, SB-2, and SB-3. Free product was observed during the advancement of soil boring SB-2. A detailed discussion of this subsurface investigation can be found in Smith Technology's "Subsurface Investigation Report, " dated April 30, 1996. On February 13, 1997, six soil borings (SB-5, SB-6, SB-7, SB-8, SB-9, and SB-10) were advanced to depths of approximately 16 to 25 feet bgs in an attempt to further define the extent of petroleum hydrocarbons beneath the site. A review of analytical data indicates the distribution of residual TPHg and benzene in soil is generally limited to depths between 10 and 16 feet bgs in the vicinity of the former UST excavation and in the vicinities of monitoring wells MW-2 and MW-3. In addition, very low concentrations of TPHg and/or xylenes extend to boring SB-8 to the north and to monitoring wells MW-4 and MW-6 to the south. It is noteworthy to mention that free product was observed in SB-7 during drilling activities. A detailed discussion of this subsurface investigation can be found in Smith Technology's "Summary Report, " dated May 21, 1997. A quarterly groundwater monitoring program was initiated at the site in February 1992, following the installation of monitoring wells MW-1 through MW-3. Groundwater measurements have indicated the site's underlying groundwater gradient direction is 92054.00MREPORTSMORKPLANDOC 2