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California Re-g-io' nal Water"Quality Cuatrol Board <br /> Central Valley Region <br /> Winston H.Hickox Robert Schneider,Chair (a <br /> Secretary for Cray Davis <br /> Sacramento Main Office -Governor <br /> Environmental Internet Address: littp://www.swreb.ca.gov/rwqcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95927-3003 D EE <br /> Phone(916)255-3000•FAX(916)255-3015 <br /> JUL 18 ZD01 <br /> 17 July 2001 <br /> ENVI R 0 NNIE" H-' <br /> Phillip&Irene Henry <br /> PO Box 282 <br /> French Camp, CA 95231 <br /> FORMER COUNTRYSIDE MARKET <br /> 10848 COPPER OPOLIS ROAD,STOCKTON <br /> ,SAN JOAQUIN COUNTY <br /> As an initial site assessment relating to the underground storage tanks at the subject property, staff sampled the <br /> on-site domestic water supply well on 27 June 2001. Six domestic water supply wells at properties surrounding <br /> the former Countryside Market were also sampled during this groundwater assessment. <br /> The on-site domestic well was sampled by purging the well for approximately twelve minutes prior to sample <br /> collection. A portable generator positioned on the well pad powered the well pump. The generator and pump <br /> were shut off before sample collection, and water froom the small holding tank was collected for analysis. The <br /> water sample was collected from a hose bib at the wellhead using a clean brass hose connector and a one foot <br /> piece of disposable polyethylene tubing to transfer the water sample from the hose bib into sample containers <br /> provided by the laboratory. The sample containers were labeled,placed directly into a pre-cooled ice chest with <br /> ice, and submitted to California Laboratory Services (CLS) in Rancho Cordova for analysis by EPA Method <br /> 8260B for volatile organic compounds and fuel oxygenates. The sample was designated"CSM10848" for 10848 <br /> Copperopolis Road domestic well, and the trip blank was designated"CSM10650". <br /> The water sample from your domestic well did not contain any constituents at respective detection limits. A copy <br /> of the CLS laboratory report is attached for your records. However, estimated values for benzene and toluene as <br /> well as other tentatively identified compounds (TICs)were identified below respective reporting limits. These <br /> estimated values and TICs may be due to vapors from the generator, and we would like to re-sample your well <br /> once you have connected to permanent power. Please contact me at the number below once permanent power is <br /> supplied to your well. <br /> If you have any questions,please call me at(916)'255-3115. <br /> �MaHart eIl­)k <br /> Associate Engineering Geologist <br /> Attachments <br /> cc: Ms. Margaret Lagorio, San Joaquin County Environmental Health Division, Stockton <br /> California Environmental Protection Agency <br /> Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swreb.ca.gov/rwqcb5 <br />