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' INTRODUCTION <br />' At the request of ExxonMobil Refining and Supply Company,ETIC Engineering,Inc has prepared <br /> this quarterly groundwater monitoring report for former Exxon Retail Site 7-3708 This report <br /> presents the results for the most recent groundwater monitoring conducted at the site and summarizes <br />' recent site activities This report covers site activities from 20 November 2001, the date of the last <br /> monitoring event, until 12 March 2002, the date of the recent monitoring event Groundwater <br /> monitoring results, well construction details,and a groundwater monitoring plan are provided in the <br /> Iattached figures and tables Groundwater monitoring protocols, field data, and analytical results are <br /> provided in the attached appendixes <br />' <br /> GENERAL T <br /> RA SITE INFORMATION <br />' Site name Former Exxon Retail Site 7-3708 <br /> Site address: 2705 Country Club Boulevard, Stockton, California <br />' Current property owner. Palisades Gas &Wash, Inc <br /> Current site use. Active USA-branded station operated by U S A Petroleum <br /> Current phase of project- Groundwater monitoring, well surveying <br />' Tanks at site: Two underground storage tanks (diesel fuel, unleaded <br /> gasoline) <br /> Number of wells: 12 (8 onsite, 4 offsite) <br /> GROUNDWATER MONITORING SUMMARY <br /> Gauging and sampling date. 12 March 2002 <br /> Wells gauged and sampled- MW 1, MW4-MW 10, VEW 1, VEW3 <br />' Wells gauged only: None <br /> Groundwater flow direction. East-southeast <br />' Groundwater gradient: 00008 <br /> Well screens submerged: MWI, MW4-MW8 <br /> Well screens not submerged. MW9, MW 10, VEW 1, VEW3 <br />' Liquid-phase hydrocarbons: Not observed or detected <br /> Laboratory- TestAmenca, Inc , Nashville, Tennessee <br />' Analyses performed <br /> • Total Petroleum Hydrocarbons as gasoline by EPA Method 8015B <br />' . Benzene, toluene, ethylbenzene, and total xylenes by EPA Method 8021B <br /> • Methyl t-butyl ether (MTBE), 1,2-dibromoethane, ethyl t-butyl ether, methyl t-amyl ether, <br /> t-butyl alcohol, 1,2-dichloroethane, and isopropyl ether by EPA Method 8260B <br />' • Dissolved lead by EPA Method 6010B (selected samples) <br /> • <br /> I <br /> g\pmleus173708\nwit r\wp\g030213708text Soy <br />' 1 <br />