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INTRODUCTION <br /> At the request of ExxonMobil Oil Corporation, ETIC Engineering,Inc has prepared this quarterly <br /> groundwater monitoring report for former Exxon Retail Site 7-3708 This report presents the results <br /> for the most recent groundwater monitoring conducted at the site and summarizes recent site <br /> activities This report covers site activities from 23 March 2005, the date of the last monitoring <br /> event,until 27 June 2005,the date of the recent monitoring event Groundwater monitoring results, <br /> well construction details, and a groundwater monitoring plan are provided in the attached figures and <br /> ttables Groundwater monitoring protocols, field data, and analytical results are provided in the <br /> 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 phase 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 /> GROUNDWATER MONITORING SUMMARY <br />' in Gaug g sampling and date: 27 June 2005 <br /> P g <br /> Wells gauged and sampled: MW1, MW4-MW10, VEW1, VEW3 <br />' Wells gauged only: None <br /> Groundwater flow direction: Southeast <br />' Groundwater gradient: 0 002 <br /> Well screens submerged: MW 1, MW4-MW6 <br /> Well screens not submerged: MW7-MW10, VEW1, 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, ethyl t-butyl ether, t-amyl methyl ether, t-butyl alcohol, <br /> 1,2-dibromoethane, 1,2-dichhoroethane, diisopropyl ether, and ethanol by EPA Method <br />' 8260B <br /> • <br /> g%M)Ccts5737085master w"\g0605�3708tcxt clot 1 <br />