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1 <br />' 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 7-3942 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 2 March 2004,the date of the last monitoring event, <br /> until 29 June 2004, the date of the recent monitoring event The report also presents results for <br /> remediation system monitoring Groundwater monitoring results, well construction details, a <br />' groundwater monitoring plan,and system monitoring results are summarized in the attached figures <br /> and tables Groundwater monitoring protocols, field data,and analytical results are provided in the <br /> attached appendixes <br /> I <br />' GENERAL SITE INFORMATION <br /> Site name: Former Exxon Retail Site 7-3942 <br />' Site address: 4444 North Pershing Avenue, Stockton, California <br /> Current property owner: Edna I Filippi Family LP <br /> Current site use: Vacant lot <br /> Current phase of project: Groundwater monitoring <br /> Tanks at site: Four former underground storage tanks(used oil,three grades <br /> of gasoline)removed July 1986 <br />' Number of wells 30 (22 onsite, 8 offsite) <br />' GROUNDWATER MONITORING SUMMARY <br /> Gauging and sampling date: 28 and 29 June 2004 <br /> Wells gauged and sampled. IW 1,MW2-MW5,MW8,MW 10,MW 13,RW I,RW2,RW4, <br /> SWI, SW2, WB-MWI, LTVB-MW2, V1-V4 <br /> Wells gauged only: MWI, MW6, MW7, MW9 <br /> Groundwater flow direction: Northeast <br /> Groundwater gradient: 0 005 <br /> Remediation system status during <br /> groundwater monitoring event: UVB system not operating <br /> Well screens submerged: IWI, MW13, RW1, RW2, RW4, SWI, SW2, WB-MWI, <br /> UVB-MW2, V1, V3, V4 <br /> Well screens not submerged: MWI-MW10, V2 <br /> Liquid-phase hydrocarbons: Not observed or detected <br /> Laboratory- TestAmenca, Inc , Nashville, Tennessee <br /> I <br /> g\projects\73942\maner\wpVgO704\3942text dm 1 <br /> 1 <br />