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L , <br /> / 1 <br /> •Y <br /> chevron <br /> � �, � ►; Chevron <br /> . A 1 199.5 <br /> Chevron U.SA Products Company <br /> 6001 Bollinger Canyon Rd'.. Bldg. L <br /> ENVIRONMENTAL HEALTH P.O. Bax 5004 <br /> April 10, 1995 PERMIT/SERVICES San Ramon, CA 94583-0804 <br /> Site Assessment& Remediation Group <br /> Phone 15101842-9500 <br /> Ms. Linda Turkatte � J <br /> San Joaquin County Environmental Health <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> Re: Chevron Station#9-6465, 5608 North Pershing Avenue, Stockton, CA <br /> Attached groundwater monitoring report(Blaine Tech, 3124195) <br /> Dear Ms. Turkatte: <br /> Please find attached a report dated March 2.4, 1995, which was prepared by Chevron's consultant, <br /> Blaine Tech Services, Inc. (Blaine Tech), to describe groundwater monitoring and sampling that <br /> was performed at the subject.site on March 8, 1995. <br /> During their March site visit Blaine Tech gauged and sampled all three site-related monitoring <br /> wells. The measured groundwater elevations at each well were the highest measured in nearly five <br /> years. The measured direction of groundwater flow was generally toward the south. Monitoring <br /> wells MW-4A, MW-10, and MW-11 were sampled and analyzed for the presence of TPHGas and <br /> BTEX. Except for 0.61 ppb xylenes at MW-4A, there were no detectable concentrations_ of <br /> dissolved petroleum hydrocarbons measured at any of the three wells. <br /> Despite the significant increase in groundwater elevation beneath the site, the most recent <br /> groundwater data continues to support a decision to close the case. All parties involved would like <br /> this case closed soon. <br /> If you have any questions or comments, I can be reached at(510) 842-8695. <br /> Sincerely, <br /> ,Cid ;�_ / <br /> Brett L. Hunter <br /> Environmental Engineer <br /> Site Assessment and Remediation <br /> Attachment <br /> cc: Elizabeth Thayer, Central Valley Regional Water Quality Control Board, Sacramento ,CA <br /> A.G. Spanos Construction, Inc., 1341 W. Robinwood Dr., Stockton, CA 95207 <br /> Bette Owen, Chevron USA, Products Company, San Ramon, CA (w/o attachment) <br /> V1� <br /> H�cy�C!abte <br />