Laserfiche WebLink
' 3164 Gold Camp©rive <br /> Delta RanSuit200 <br /> w Rancho Cordova CA 95670-$021 <br /> �� Environmental U 5 A <br /> Consultants,Inc. 9161638-2085 <br /> FAX 916/638-8385 <br /> June 28, 1999 <br /> ' Mr Darin Rouse <br /> Exxon Company,U S A <br /> 2300 Clayton Road, Suite 1250 <br /> ' Concord,California 94520 <br /> Subject Quarterly Ground Water Monitoring Report, Second Quarter 1999 <br /> ' Exxon Service Station No 7-0137 <br /> 1605 South El Dorado Street <br /> Stockton, California <br /> ' Delta Project No D099-865 <br /> Dear Mr Rouse <br /> ' Delta Environmental Consultants,Inc (Delta)has been authorized by Exxon Company,U S A (Exxon) <br /> to prepare a report summarizing results of quarterly ground water monitoring and sampling conducted <br /> at the subject site which is currently operating as an Exxon Service Station This report presents the <br /> results of quarterly ground water monitoring and sampling conducted on May 19, 1999 Site features <br /> are illustrated on Figure I The field methods and procedures used by Delta are presented in <br /> ' Enclosure A <br /> Work Performed <br /> ' On May 19, 1999, depth to ground water was measured in ground water momtormg wells MW-1 <br /> through MW-7, and vapor extraction wells VEW-1 and VEW-2 Vapor extraction well VEW-1 was <br /> dry A map illustrating ground water elevation and flow direction is included as Figure 1 Ground <br /> ' water samples were collected from monitoring wells MW-1 through MW-7, and vapor extraction well <br /> VEW-2 The samples were submitted to Sequoia Analytical (a Califomia-certified laboratory) for <br /> analysis of benzene, toluene, ethylbenzene, and total xylenes (BTEX), and methyl tertiary butyl ether <br /> (MTBE) using EPA Method 8020, and total purgeable petroleum hydrocarbons (TPPH) as gasoline <br /> using EPA Method 8015 Modified A map illustrating concentrations of benzene, TPPH as gasoline, <br /> ' and MTBE is included as Figure 2 Cumulative ground water data is summarized in Table I Field <br /> sampling data sheets for the site are included as Enclosure B <br /> ' A copy of the laboratory analytical report with chain-of-custody documentation for the May 19, 1999 <br /> sampling event is presented in Enclosure C <br /> 1 <br /> ' P o,,iding a Cor ipvtitive Eaae <br />