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Chevron <br /> �= Chevron U.S.A. Inca � <br /> 2 Annabel Lane, Suite 200, San Ramon, CA 94583•Phone 1415) 838-5000 <br /> + June 20, 1988 1 <br /> Marketing Operations, I <br /> D Moller y <br /> Division Manager Operations 6. <br /> S.L. Patterson <br /> Area Manager,Donations - ✓f i. <br /> C.G.Trimbach <br /> 4 Manager,Engineering - - - - JUN. 2 9 1988 - I <br /> Ms. Diane Hinson OVIROMENTAL HEALTH' <br /> San Joaquin Local Health District. FERIAIT/SERVICES <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Former Chevron Service Station 9-1918 P <br /> } 45 E. Harding Way, Stockton . <br /> Dear Ms. Hinson; <br /> Attached.are the Soil Vapor Survey and Soil sampling reports for the subject station. ` <br /> We have sampled the tank hole bottom to 20 and 25 feet. Presently, the soil4n the tank <br /> hole has not been excavated. We plan to ramp into the tank^hole, excavate to 25' or .less <br /> { than 10 ppm TPH, and aerate the soil. Our contractor, Oil Equipment'Service,;will be in <br /> touch with your office . to get your o.k. for the Air Pollution Control District. ,The <br /> f ` <br /> excavated soil will be placed on:plastic and covered with plastic until aeration permits are <br /> secured. Based onthe results of the Soil Vapor Survey, we believe the contamination to <br /> be confined to the area immediately adjacent to and beneath the former, tank complex. <br /> Samples will be . taken off: the 'walls of the tank hole ,to confirm lateral :extent r of <br /> � <br /> contamination— <br /> To <br /> s � <br /> To determine if there has been any impact on groundwater, 3 soil borings wiWbe installed <br /> per the attached work plan. We plan to install the wells as soon as possible after the tank <br /> hole has been backfilled and soil aerating on site does not obstruct the,well locations.iWe <br /> 1 have been in contact with the property owner and may alter the exact well locations to fit <br /> future development of the site. _ <br /> If you have any questions, call,Kay Huffman at (415) 838-5302. <br /> Very truly yours, 4 <br /> s D. MOLLER° " <br /> 1 y <br /> B f� <br /> ( K.G. Huffma , gineer <br /> j KGH/jasdXK3-62 <br /> 4 <br /> Attachment <br /> cc: R.A. Beffa . <br /> D.A. Walsh <br /> { Mr..Douglas Selby <br /> EA Engineering <br /> { 41 Lafayette Circle <br /> Lafayette, CA 94549 <br />