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Chevron ✓'� <br /> Chevron U.S.A. Inc. <br /> 2410 Camino Ramon, San Ramon, California • Phone (5101842-9500 <br /> Mail Address:P.O.Box 5004,San Ramon,CA 94583-0804 <br /> Marketing Department <br /> December 20, 1991 <br /> try <br /> Ms.Margaret Lagorio E C <br /> San Joaquin County Environmental Health E C 2 7 1991 <br /> P.O. Box 2009 <br /> Stockton, CA 95201 E VIRONMENTAL HIALTH <br /> PERMIT/SERV`rCES <br /> Re: Chevron Station#9-4275 <br /> 2905 West Benjamin Holt Drive, Stockton,CA <br /> Dear Ms. Lagorio: <br /> Enclosed is a report dated December 13, 1991 which was prepared by Chevron's consultant,Alton <br /> Geoscience(Alton), to describe groundwater monitoring which occurred on October 31, 1991 at <br /> the site captioned above. The hydraulic gradient direction and the levels of dissolved hydrocarbons <br /> in the groundwater samples were consistent with previous observations at this site. <br /> I have contacted two environmental consulting firms and requested cost estimates for the scope of <br /> work outlined in the work plan(Groundwater Technology,June'1990) for installing two additional <br /> groundwater monitoring wells as we have discussed on the telephone recently. Once I have <br /> received the cost estimates and selected a firm to perform the work, that firm will proceed <br /> immediately with well permit applications for the on and off site wells. <br /> If you have any questions or comments,you may contact me at(510) 842-8658. , <br /> Sincerely, <br /> Clint B. Rogers <br /> Site Assessment and Remediation Engineer <br /> Enclosure <br /> cc: Elizabeth Thayer, Central Valley RWQCB, Sacramento,CA <br /> Chuck Carmel,ARCO Products Co., P.O. Box 5811, San Mateo, CA 94402 <br /> Steve Mizer, Brown and Caldwell, 723 S St., Sacramento, CA 95814-7092 <br />