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1 <br /> ' Quarterly Report - First Quarter 2003 <br /> LOCAL FOOD STORE <br /> ' 2650 Monte Diablo Avenue, Stockton, California <br /> 1.0. INTRODUCTION <br /> 1� <br /> At the request of Mr Liaqat Khan, Advanced GeoEnvironmental, Inc (AGE) has prepared this <br /> quarterly report for Local Food Store, located at 2650 Monte Diablo Avenue, Stockton, California <br /> (the site) The scope of work included monitoring and sampling four ground water monitoring wells <br /> and preparation of this report The location of the site is illustrated in Figure 1 On-site structures, <br /> ' boring and monitoring well locations are illustrated in Figure 2 <br /> This report has prepared in accordance with Central Valley Regional Water Quality Control Board <br /> (CVRWQCB)guidelines for subsurface investigations of underground storage tank(UST) sites A <br /> general history of the site is included in Appendix A Previous ground water monitoring results are <br /> included in the tables of this report <br /> 2.0. PROCEDURES <br /> • The field activities were performed in accordance with the San Joaquin County Environmental <br /> Health Department (EHD)-approved Prekminary Site Assessment Work Plan, prepared by AGE, <br /> dated 29 November 1999 <br /> ' 2 1 WELL MONITORING AND EVACUATION <br /> On 21 March 2003, a Solinst water level meter was used to measure the depth to ground water in all <br /> four monitoring wells relative to the tops of the well casings After water levels were measured, each <br /> ' well was purged utilizing a disposable bailer or Waterra inertial pump Approximately 6 gallons (a <br /> minimum of three casing-water volumes) of water were removed from wells MW-1, MW-3 and <br /> ' MW-4 and 24 gallons of water were removed from well MW-2 <br /> Temperature,pH and conductivity of the purged water were measured at approximately two-gallon <br /> ' intervals for MW-1,MW-3 and MW-4 and at five-gallon intervals for MW-2 Temperature,pH and <br /> conductivity of the purged water was measured using an Oakton water analyzer (Appendix B) <br /> Purged water was stored on-site in 55-gallon, DOT-approved drums <br /> ' Advanced GeoEnvironmental,(roe <br /> 1 <br />