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strz A:1_T11Chevron <br /> 1 <br /> err, J`= 29 PM 12* © 1. <br /> Chevron U.SA Products Company <br /> 6001 Bollinger Canyon Rd., Bldg. L <br /> P.O. Box 5004 <br /> San Ramon, CA 94583-0804 <br /> Site Assessment& Remediation Group I` <br /> Phone (510)8.42-9500 <br /> - - August-25, 1995 - -- - <br /> Ms. Mary Meays - - - - <br /> San Joaquin County Environmental Health" _ <br /> P.O.Box 2009 <br /> Stockton,CA 95201 <br /> Re: - Former Chevron Station#9-19.18,45 East Harding Way, Stockton, CA - + <br /> Attached groundwater.monitoring report(Blaine Tech;5/15/95) <br /> Dear Ms. Meays: - <br /> Please find attached.a report dated May_15;1995,which was prepared by-Chevron's consultant,Blaine - �) <br /> Tech Services Inc. (Blaine Tech),to describe the results of groundwater monitoring that was performed at <br /> the subject site on April 14, 1995. <br /> During their April site visit Blaine Techgaugedand sampled seven of thefourteensite-related wells. The <br /> remaining seven,are'completed above the present groundwater level The depth to groundwater beneath <br /> the site was the shallowest measured in nearly four years:The measured direction of groundwater flow <br /> was northeasterly. <br /> Groundwater samples were analyzed for the presence of TPHGas and BTEX constituents.Detectable <br /> concentrations of dissolved hydrocarbons were measured at wells MW4 and MW-13. There were no <br /> significant changes in concentrations from those detected during previous site monitoring events. The . <br /> groundwater results at all other wells were non-detect.:A comparison of this quarter's sample results from .� <br /> well MW,13 to those obtained last quarter suggest that.there is no trend developing of increasing <br /> concentrations. Further investigation will be performed to better define plume characteristics-in this area <br /> - If you have any questions or comments,I can be reached at(5 10) 842-8695. - <br /> Sincerely, I <br /> `i <br /> Brett L. Hunter <br /> Environmental Engineer <br /> Site Assessment and Remediation <br /> N6cyCKakia) <br />