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�MSFMA <br /> AM—/IV/" U <br /> Working to Restore Nature <br /> hydrocarbons were detected in soil beneath the dispenser islands, between the underground <br /> gasoline storage tanks and the dispenser islands, along the north and west side of the former <br /> gasoline tank cavity, and near the southeast corner of the site (RESNA, January 31, 1992, <br /> Report 30041-2, and November 12, 1992, Report 30041-3) The lateral extent of residual <br /> gasoline hydrocarbons in soil was delineated at the site except for the area near the <br /> southeast corner of the site. Although trace to low concentrations of gasoline hydrocarbons <br /> were detected below 70 feet bgs, the vertical extent of residual gasoline hydrocarbons in soil <br /> appeared to be limited to between 50 and 70 feet bgs, dependent upon location, and from <br /> surface grade to approximately 70 feet bgs beneath the dispenser islands <br /> RESNA performed a vapor extraction test at the site on October 14, 1991, using vapor <br /> extraction wells VW-1, VW-2, VW-3, and VW-4 (RESNA, January 31, 1992, Report 30041- <br /> 2). The results of the test indicated that vapor extraction is a feasible means to remove <br /> residual gasoline hydrocarbons from the soil <br /> In December 1992, RESNA observed drilling of one soil boring (B-26) and construction of <br /> a vapor extraction well (VW-17) Residual gasoline hydrocarbons were detected in soil <br /> samples collected from the soil boring (RESNA, March 18, 1993, Report 30041-4) <br /> Groundwater was not encountered in the soil boring The lateral extent of residual gasoline <br /> hydrocarbons in soil has been delineated in all directions with the exception of the vicinity <br /> . south of boring B-26 <br /> WORK CONDUCTED FIRST QUARTER 1994 <br /> ARCO submitted a license agreement to the property owner across Patterson Pass road in <br /> order to gain access for further assessment of soil. <br /> WORK IN PROGRESS <br /> RESNA has submitted an offsite access agreement to the property owner south of the <br /> ARCO site for drilling three soil borings and installing vapor extraction wells. Once ARCO <br /> has received authorization to access property, RESNA will proceed with final assessment <br /> activities <br /> 10 0405ar/3"1-7 2 <br />