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. QUARTERLY REPORT <br /> September 1995 <br /> Genova Bakery <br /> 749 North Sierra Nevada Street <br /> IStockton, California <br /> 1.0. INTRODUCTION <br /> In accordance with a request from Mrs Donna Bruno, co-executor of the Estate of Angelo Rollen <br /> estate,Advanced GeoEnvironmental, Inc (AGE) has prepared this Quarterly Report summarizing <br /> field activities performed on 27 September 1995 at 749 North Sierra Nevada Street in Stockton, <br /> California The scope of work included the monitoring and sampling of wells The location of the <br /> site is illustrated on Figure 1 -Location Map A plan of the site is illustrated on Figure 2 - Site Plan <br /> Monitoring was performed in accordance with Central Valley Regional Water Quality Control Board <br /> (CVRWQCB) and San Joaquin County Public Health Services - Environmental Health Division <br /> (PHS-EHD) guidelines for the investigation of underground storage tank (UST) sites <br /> 2.0. BACKGROUND <br /> 2 1 UNDERGROUND STORAGE TANK REMOVAL <br /> The site is located on the southwest corner of North Sierra Nevada Street and Flora Street in <br /> Stockton, California Genova Bakery occupies the only building on the site One 3 50-gallon gasoline <br /> underground storage tank(UST)was removed from beneath the sidewalk, on the west side of North <br /> tSierra Nevada Street, in September 1989 Samples collected from beneath the UST indicated that an <br /> unauthorized release of hydrocarbons had occurred The PHS/EHD required investigation of the <br /> lateral and vertical extent of petroleum hydrocarbons <br /> 2 2 HYDROCARBON-R.APACTED SOIL AND GROUND WATER ASSESSMENT <br /> Assessment of hydrocarbon impacted soil and groundwater at this site was completed by <br />' Groundwater Technology, Inc and reported in November 1987 and October 1988 Seven <br /> groundwater monitoring wells were installed on or near the site Free product was observed in MW-1 <br /> and MW-2 and was removed by representatives of Genova Bakery No contamination was detected <br /> in the other five wells The assessment of hydrocarbon impacted soil indicated that vadose zone <br /> contamination was restricted to the area immediately below the former UST location <br /> 23 REMEDIATION OF HYDROCARBON-IMPACTED SOIL <br /> • <br /> A vapor well was installed by Geological Audit Services, Inc (GeoAudit) near the center of the <br /> �I <br />