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i <br /> 1� <br /> SITE HISTORY <br /> On November 14, 1989 the following tanks were removed from the <br /> site in accordance with the Tri-Regional Recommendations: <br /> 1 <br /> 1 8,000 Gal. Unleaded Gasoline <br /> 1 5,000 Gal. Super Unleaded Gasoline <br /> 2 5,000 Gal. Unleaded Gasoline <br /> r <br /> A total of 8 soil samples were taken two under each tank and <br /> analyzed for TPH, and BTX&E. The lab results previously <br /> reported varied from 1.9 to 3600 PPM for TPH. <br /> r <br /> The excavation site was backfilled with the original soil plus <br /> soil from a new excavation. The site was then remodeled and <br /> placed back in service. <br /> On Dec. 19 , 1989 an Electromagnetic Induction survey was <br /> conducted on the site to aid the investigation of the areal <br /> extent of the plume and to assist in locating the groundwater <br />• monitoring wells. <br /> Three wells were drilled in January 1990 to assess the <br /> groundwater. Our report of Feb. 9, 1990 covered this work. <br /> Subsequently, we attempted to obtain groundwater samples at <br /> various times, however, the water table at the site lowered <br /> below the bottom of the wells and has never recovered. <br /> Between March 30 and April 2 , 1992 , we drilled three additional <br /> wells. This work was reported in our report of April 30, 1992. <br /> Four quarterly reports followed the drilling and the groundwater <br /> hydraulic gradient was found to be generally to the east. With <br />• this information we developed the following drilling program in <br /> order to assess the groundwater both up and down gradient. <br />• <br /> Page 3 <br />