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j <br /> • Quarterly Report - Second Quarter 2001 <br /> Local Food Store <br /> ' 2650 Monte Diablo Avenue, Stockton, California <br /> ' 1.0. INTRODUCTION , <br /> At the request of Mr Liaqat Khan of Local Food Store,Advanced GeoEnvironmental, Inc (AGE) <br /> has prepared this quarterly report for Local Food Store, located at 2650 Monte Diablo Avenue, <br /> Stockton, California(the site) <br /> ' The scope of work of this investigation included ground water monitoring and sampling of four <br /> monitoring wells on 31 May 2001 and preparation of this report of findings The location of the site <br /> ' with respect to its surroundings is illustrated in Figure 1 On-site structures, boring and monitoring <br /> well locations are illustrated in Figure 2 <br /> ' This report is prepared in accordance with Central Valley Regional Water Quality Control Board <br /> guidelines for subsurface investigations of underground storage tank (UST) sites <br /> ' General background information and data were presented in Preliminary Evaluation and <br /> Investigation Report, dated 04 August 2000,prepared by AGE <br /> 2.0. PROCEDURES <br /> ' The field activities were performed in accordance with the San Joaquin County Public Health <br /> Services-Environmental Health Division(PHS-EHD)-approved Preliminary Site Assessment Work <br /> ' Plan prepared by AGE, dated 29 November 1999 <br /> ' 2 1 GROUND WATER MONITORING ACTIVITIES <br /> On 31 May 2001, a ground water monitoring event was conducted at the site The monitoring <br /> activities included the measurement of depths to the ground water surface within wells and collection <br /> of ground water samples from the four monitoring wells <br /> The water level in monitoring wells MW-1 through MW-4 were measured relative to the tops of the <br /> well casings using a Solinst water level meter After water levels were measured, each well was <br /> ' purged utilizing a disposable bailer or 2-stage pump Six gallons(a minimum of three casing-water <br /> volumes)of water were removed from wells MW-1, MW-3 and MW-4 and twenty-four gallons of <br /> water were removed from well MW-2 <br /> ' Temperature, pH and conductivity of the purged water were measured at one-gallon intervals for <br /> iMW-1,MW-3 and MW-4 and at five-gallon intervals for MW-2 Temperature,pH and conductivity <br />