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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 22 March 2004, the date of the last <br /> monitoring event, until 1 June 2004, the date of the recent monitoring event Groundwater <br /> I 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 phase of project: Joint 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 /> Gauging and sampling date: I June 2004 <br />' Wells gauged and sampled: MWI, MW4-MW10, VEWI, VEW3 <br /> Wells gauged only: None <br /> Groundwater flow direction: South-southeast <br />' Groundwater gradient. 0 002 <br /> Well screens submerged: MW1, MW4-MW6 <br /> Well screens not submerged: MW7-MW10, VEWI, 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-dichloroethane, and diisopropyl ether by EPA Method 8260B <br />' <br /> Additional comments. <br />' Groundwater grab samples were collected from well VEW3 <br /> g�g-j=ts17370&V,,=.N p*060413708tcxt d.c 1 <br />