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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 I June 2004, the date of the last <br /> monitoring event, until 16 September 2004, the date of the recent monitoring event Groundwater <br /> monitoring results,well construction details,and a groundwater monitoring plan are provided in the <br />' attached figures and tables Groundwater monitoring protocols,field data,and analytical results are <br /> provided in the attached appendixes <br /> GENERAL 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 please of project: Groundwater monitoring <br />' Tanks at site: Two underground storage tanks (diesel fuel, unleaded <br /> gasoline) <br /> Number of wells: 12 (8 onsite, 4 offsite) <br /> lie <br /> GROUNDWATER MONITORING SUMMARY <br /> Gauging and sampling date- 16 September 2004 <br /> Wells gauged and sampled: MW 1, MW4-MW 10 <br /> Wells gauged only: VEW I and VEW3 <br /> Groundwater flow direction: North-northeast <br /> Groundwater gradient- 0 001 <br /> Well screens submerged: MW I, MW4-MW6 <br /> Well screens not submerged: MW7-MW 10, VEW 1, VEW3 <br />' Liquid-please 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, ethyl t-butyl ether, t-amyl methyl ether, t-butyl alcohol, <br /> 1,2-dibromoethane, 1,2-dichloroethane, diisopropyl ether, and ethanol by EPA Method <br />' 8260B <br /> Additional comments: <br /> Well VEW3 was dry <br /> 9\P^DJects%737081mesteAwp1g0904\37081cxe do <br />