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10/09/95 11:41 0510 842 8252 CHEVRON PRODUCTS 11002/003 <br /> NO Chevron <br /> Wo <br /> Cbwmn U.SA Products Cenpwq <br /> 80al Hollinger Campri Rd,Bldg.L <br /> P.O.Baur 50M <br /> San Agmen,CA 94583-8804 <br /> Site Assessment&Remediatiwc Group <br /> Plane(598}842580 <br /> Wober 6, 1995 <br /> Ms.Diane Hinson: <br /> San Joaquin County Environmental Health <br /> P_O_Box 398 <br /> Stockton,CA 95201-0388 <br /> Re: Chevron Station#9-X45 3341:.Main St WMASA <br /> Attacked Soil Analytical Results(Sequoia Analytical) <br /> Dear Ms. Hinson; <br /> By way of this letter,Chevron world like to propose a plan for your acceptance to offhaul and dispose of <br /> soil stockpiles that have been Epnerated at the subject site during recent underground storage tank([JET) <br /> removal and additional soil excavation activities. <br /> There were approximately two hundred cubic yards of soil stockpiled at the subject site as a result of fuel <br /> UST(and associated piping)removal activities that occurred on September 27,1995.Eight grab soil <br /> samples,each representing approximately twenty five cubic Yards,were collected from ibis stocicpile by a <br /> representative of Touchstone Developments under the supervisiov of Rnbert McC1ellon(San Joaquin <br /> County Public Health Services, SJCPHS)on September 27, 1995.The samples were desigzrated as SP-1a <br /> through Skid and SP-2a through SP-2d-The eight saraples were composited into two mate samples <br /> (SP-1 a d and SP-2 a-d)at a state, rtified laboratory and analyzed for TPHCos,B7'EX and total lead in <br /> woudance with Chevron's desiguated landfill requirements. Copies of the respective chain of custody and <br /> analytical results are attached for your review. <br /> There were apprwunlately 30-AA cubic yards of soil stockpiled at the subject site as a result of the used oil <br /> UST rmutuval on September 27, 1995.Four composite samples((JOSR1 a-d)were collected by <br /> Touchstone and witnessed by SJCPHS on that same day.The samples were later composited in the <br /> laboratory and aru*7edfor valatile orgawc oompounds(EPA 524+0),semi-volatile orgarnc compounds <br /> (EPA 8270),total recoverable petroleum hydrocarbons(EPA 418-1),total lead,and CAM 17 metals to <br /> meet landfill acceptance criteria.The respective chain of custody and analytical results are attached fear <br /> your review. <br /> In addition to the above-mentioned soil volumes,Chevron proposes to offhaul and dispose of two <br /> additional soil stockpiles.One stockpile represents approximately forty cubic yards of Boil that was <br /> generated on October 2, 1995 during the removal of excess backfill remaining in the former fuel UST pit <br /> and during the deepening of the same pit from approximately.thirteen feet below ground surface to i <br /> aWeximateiy seventeen feet below ground surface beneath the location of Touchstone's previously <br />