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July 25, 1989 aur ';_ 11989 <br /> � f I! <br /> ENViRt�;liJicNTAI'N <br /> PSR I SH2VICE� <br /> u <br /> Eduard James J �� <br /> California Regional Water <br /> Quality Control Board <br /> Central Valley Region _ a <br /> 3443 Routier Road � <br /> Sacramento, California 95827-3098 <br /> 5: f. <br /> Re;: Chevron Station #9-1918 <br /> i 45 East Harding Way <br /> Stockton, California <br /> Dear Mr . James: <br /> On. behalf of Chevron U. S.A. EA Engineering has prepared ' <br /> 9 9 P re ar P e 'f <br /> the enclosed Soil and Groundwater Investigation Reports l <br /> (Phases I and II) for the above referenced site. Eight <br /> wells have been installed at the site between November 198';8 <br /> and January 1989 . In January five soil borings were � 1 <br /> drilled and completed as vapor extraction wells. <br /> Hydrocarbons in the soils are limited to the former^, <br /> underground storage tank area. Chevron is currently <br /> awaiting encroachment permits in order to install two ! t <br /> iadditional wells in the bordering streets per the o''riginal <br /> workplan. The additional wells will enable Chevron!1to <br /> delineate the presence of hydrocarbons in the groundwater,'. <br /> 'I <br /> j Based on the results from this investigation, Chevron will' <br /> !t continue to monitor the wells onsite quarterly. A soil vapor <br /> } extraction is also planned for this site. Permit a'pplicat'ions <br /> will be submitted shortly. + <br /> Ifyou have any questions or require additional inflrmatio;n, <br /> please contact Lisa Marinaro at ( 415) 842-9527 . <br /> I Sincerely, 'I <br /> D. Moller j <br /> BY rol lil l Yt li� tJ <br /> 1 Lisa Marinaro, Ehgineen <br /> cc: Laurie Cotulla ! <br /> San Joaquin <br /> ' Local Health District !` _ <br /> 4 P.O. Box 2009 <br /> Stockton, California 95201 <br />