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a�R - _ - .��._ � �•'c .n.�- - 3"moi- �"f'.. - <br /> d <br /> F� <br /> 2 CON CLU ST_ONS AN <br /> 1iECOM1�iElYD�sTIUIr 5 <br /> { <br /> Based on the scope of work performed during this investigation the following conclusions <br /> were developed: <br /> An undetermined amount of waste oil had been allowed to periodically overflow <br /> from the facility's former 200 gallon underground tank- The tank Tasedgnsa of <br /> removed in November 1988. The tank was intact and showed y <br /> ' of the tank is unknown,it behaved to have been <br /> 1A deterioration. Although the age <br /> installed before 1970. <br /> } 2, The downward leaching of the waste oil spilled from the t had reached the water <br /> table and had contaminated the groundwater. <br /> 3. The source of the contamination has been eliminated and the majority of the <br /> ' . contaminated soils removed. <br /> 4. Although the areal extent of the groundwater contamination has not been <br /> completely defined, the levels of purgeable halocarbon compounds present in the <br /> . , <br /> tion levels. The level of groundwater contamination <br /> groundwater are well below ac <br /> therefore represents no immediate threat to public health and welfare, and thus <br /> require no farther remediation. <br /> 5. Soil samples collected from beneath the base of the in-ground gasoline tank show <br /> no signs of gasoline, EDB or TEL contamination. <br /> The'Oresence of trace amounts of chlorinated solvents remaining in the groundwater has <br /> stimulated the need for farther understanding of their source. It is now believed that this <br /> source stems from the dealership's new car washing activities, and not from the formes <br /> .--------------- --undrground wasS:e'-ail._tank.—..Since the levels of contamination <br /> eare below the EPA's <br /> drinking water standards Primary MCLS (Maximum Contaminant Level), the IDHi=s;t ze <br /> 4 <br />