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QUARTERLY REPORT <br />' January 1996 <br /> Bill Stewart's Beacon _ <br />' 515 West Eleventh Street <br />' Tracy, California <br /> t1.0. INTRODUCTION <br />' In accordance with a request from Mr William Stewart, Advanced GeoEnvironmental, Inc (AGE) <br /> has prepared this report for the property located at 515 West Eleventh Street in Tracy, California <br /> Mr Stewart is the former owner of Bill's Bait and Beacon, which operated at the site until 1988 <br />' Field work for quarterly ground water monitoring was performed on 14 January 1996 In addition, <br /> five soil probings were established on 22 January 1996 The location of the site is illustrated in Figure <br /> 1 -Location Map A plan of the site is illustrated in Figure 2 - Site Plan <br /> This Quarterly Report is prepared in accordance with San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> Board (CVRWQCB) guidelines for investigation of underground storage tank (UST) sites <br /> 2.0. BACKGROUND <br /> 2 1 SITE LOCATION <br /> The site is located in a relatively flat business/residential area of Tracy, California at the intersection <br /> of West Eleventh Street and Bessie Street (Figure 1) The property was operated as a Beacon <br /> gasoline station until 1988 Between 1988 and 1995, the property was vacant Currently, an Arco <br /> station is operating on the property <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL <br /> Itis our understanding that three underground storage tanks (USTs) were removed From the subject <br /> site in 1988 Petroleum hydrocarbons were detected in soil and ground water samples collected <br /> following the tank removal, indicating that an unauthorized release of hydrocarbons had occurred <br /> Assessment of the extent of release was subsequently ordered by the PHS-EHD , <br /> 23 MONITORING WELL INSTALLATION AND SAMPLING <br /> Between June 1988 and August 1993, four ground water monitoring wells (MW-I through MW-4) <br />• were installed at the site (Figure 2) Petroleum hydrocarbon-impacted soil was detected in samples <br /> from MW-1 and MW-4 <br />