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<br />' INTRODUCTION
<br /> tAt the request ofExxonMobil 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 summanzes recent site
<br />' activities This report covers site activities from 29 June 2004,the date of the last monitoring event,
<br /> until 28 September 2004,the date of the recent monitoring event The report also presents results for
<br /> remediation system momtonng Groundwater monitoring results, well construction details, a
<br /> groundwater momtonng 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 />' 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 /> lie Number of wells: 33 (25 onsite, 8 offsite)
<br />' GROUNDWATER MONITORING SUMMARY
<br /> Gauging and sampling date: 27 and 28 September 2004
<br />' Wells gauged and sampled- IW 1,MW2-MW5,MW8,MW 10,MW 13,RW 1,RW2,RW4,
<br /> SWI, SW2, UVB-MWI, WB-MW2, V1-V4, IP113, IP2B,
<br /> IP3B
<br />' Wells gauged only: MWI, MW6, MW7, MW9
<br /> Groundwater flow direction: Northeast
<br /> Groundwater gradient: 0 006
<br /> I Remediation system status during
<br /> groundwater monitoring event. UVB system not operating
<br /> Well screens submerged: IW1, MW13, RWI, RW2, RW4, SWI, SW2, UVB-MWI,
<br /> UV13-MW2, V3, V4, IP1B, IP213, IP3B
<br /> Well screens not submerged: MWI-MW10, V1, V2
<br /> Liquid-phase hydrocarbons: Not observed or detected
<br /> Laboratory. TestAmenca, Inc , Nashville, Tennessee
<br /> 9�projects173942\Ma ter\wp1g30D417942texr dm 1
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