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KLEINFUDER <br /> 5 RECOMrMDATIONS <br /> Additional. soil sam• ming is recommended to more fully establish the <br /> horizontal extent of contamination. Sampling locations should be selected <br /> to evaluate the extent of migration to the west, east, and southeast of <br /> the pump islands. <br /> Ground water quality should be evaluated with the installation of at least <br /> three ground water monitoring wells. Well locations and installation <br /> dates should be coordinated with other planned activity at the site such <br /> as demolicion work or soil remediation. Information obtained during the <br /> - drilling of these soil borings suggests ground water occurs at a depth of <br /> _s approximately 25 to 30 feet. Future monitoring t?OU s should be <br /> constructed to provide sampling access of ground water from this horizon. <br /> Any available site historical data should be reviewed regarding potential <br /> sources for leaks. If the site is demolished, an inspection should be <br /> made of the tanks, piping and near surface soils for any evidence of <br /> i <br /> leaks. <br /> to <br /> Future investigations should include tests necessary for evaluation of <br /> remedial options. Primarily, geotechnical data is required for evaluation <br /> of excavation alternatives or in-situ process flows. After site <br /> characterization, a feasibility study should be performed to estimate <br /> costs and technical risks for various remedial options. <br /> w <br /> 85-88-219 9 <br />