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r.. . V <br /> ON <br /> Dq <br /> {.A7 <br /> i Chevron U.S.A. <br /> Page 2 <br /> I 2.0 PROJECT OVERVIEW <br /> The subject property was developed as a Chevron Service <br /> f <br /> Station until it was razed in 1986. All underground piping <br /> rx: and Fuel storage tanks were removed at that time. Woodward <br /> is <br /> Clyde Consultants prepared an environmental assessment report <br /> for Chevron U.S.A. dated Sentember 2, 1988. The report <br /> s_ concluded that shallow soil (20 and 30 feet below grade) at <br /> the site contained minor levels of petroleum constituents and <br /> that the chemical quality of the groundwater was not known. <br /> 1;4 <br /> The Environmental Health Division of the San Joaquin <br /> County Health services required that Chevron U.S.A. conduct <br /> further studies of the site to assess the extent of soil <br /> contamination by gasoline related petroleum. On behalf of <br /> 4.3 <br /> Chevron U.$. . , Dames & Moore prepared a workplan for the . <br /> installation of groundwater monitoring wells at the property, <br /> dated March 12, 1989. Upon completion of the study outlined <br /> in the workplan, Dames & Moore released a summary report on <br /> August 31,1989. The report concluded that residual <br /> petroleum contamination was generally limited to the upper 20 <br /> feet of the soil horizon. It was also concluded that <br /> groundwater, encountered at a depth of about 71 feet below <br /> grade, did not contain detectable concentrations of petroleum <br /> hydrocarbons. - - --- <br /> 16000-250-044 <br /> { <br /> -- corrected <br /> :i <br />