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� Quarterly Report - Second and Third Quarters 2003 <br /> PACIFIC MINI-MART <br /> 4511 Pacific Avenue, Stockton, California <br /> 1.0. INTRODUCTION <br /> At the request of Mr Art Wyatt, Advanced GeoEnvironmental, Inc (AGE) has prepared this <br /> quarterly report for 4511 Pacific Avenue, Stockton,California(the sate) This report documents the <br /> operation of a low-flow groundwater remediation system,the procedures for collection and analysis <br /> I of ground water samples from the well network after the end of the third quarter and the results of <br /> a ground water and treatment system monitoring events The location of the site is illustrated in <br /> Figure 1 Structures, monitoring well and soil boring locations are illustrated in Figure 2 <br /> IThe field procedures were performed ill accordance with procedures outlined in Monitoring Well <br /> Installation and Interim Ground Water Remediation,prepared by AGE,dated 26 October 2000,and <br /> I approved by the San Joaquin County Environmental Health Department (EHD) by letter, dated 01 <br /> November 2000 The site history and a description ofprevious work performed at the site are detailed <br /> in Appendix A Data from previous groundwater monitoring events are included in the tables of this <br /> Ireport <br /> 2.0. PROCEDURES <br /> I2 1 INTERIM REMEDIATION <br /> Between March 31 and 11 September 2003, the mtenm ground water pump-and-treat system was <br /> in continuous operation at the site <br /> 1 1 Ground Water Extraction System Operation <br /> Extraction well EW-1 was adjusted at the well-head to continuously extract ground water during the <br /> second and thirds quarters 2003 at an average flow rate of less than 2 gallons per minute(GPM) The <br /> extracted ground water was routed through a ground water treatment system consisting of granular <br /> activated carbon (GAC) and Sunsolve® Following treatment, water was discharged underground <br /> via 1-inch diameter, schedule 80 polyvinylchloride(PVC)pipe underground along the west side of <br /> the site to the City of Stockton discharge line located in Rose Marie Lane A diagram of the <br /> remediation system is provided in Figure 2a <br /> Based on effluent flow meter readings (Table 1), approximately 180,000 gallons of treated water <br /> were extracted and discharged to the City of Stockton sewer system during the last two quarters of <br /> 2003 under City of Stockton Public Works Department (SPWD) Industrial Wastewater Discharge <br /> Permit No 01 <br /> Advanced GeoEnvironmental Inc <br />