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F ' • Quarterly Report - Second Quarter 2004 , FERNANDO'S PLACE 1201 South Center Street, Stockton, California ' 1.0. INTRODUCTION At the request of Mr Roger Huckins,Advanced GeoEnvironmental, Inc (AGE) has prepared this quarterly report for the property located at 1201 South Center Street,Stockton,California(site) The scope of work Included the performance of a quarterly ground water monitoring event, submission of monitoring and analytical data to the State Water Resources Control Board's GcoTracker Information management system, and preparation of this report The location of the site and surrounding area is illustrated on Figure 1, structures, former underground storage tank (UST) locations,and soil boring and monitoring well locations are Illustrated on Figure 2 Site background Information is provided in Appendix A 2.0. PROCEDURES Field work was performed in accordance with guidelines Issued by the Central Valley Regional 'Water Quality Control Board (CVRWQCB) and the San Joaquin County Environmental Health Department (EHD) for the investigation of underground storage tank(UST) sites and the sampling of ground water monitoring wells, respectively 2 1 WELL MONITORING AND EVACUATION On 24 through 26 May 2004, ground water monitoring and sampling was performed at one single- completed ground water monitoring well (MW-1),two cluster-type ground water monitoring wells (MW-2AB and MW-3A/B), and six multi-chambered ground water monitoring wells (MW-4 through MW-9) Depth to water data is Included In Table 1 Due to scheduling conflicts,the ground water monitoring could not be completed concurrently with the neighboring Are Pump and Weld site A Solinst water level meter was used to measure the depth to water in all wells to the nearest 0 01- foot, relative to the tops of the well casings Between 6 25 and 45 gallons of ground water (a I minimum of three casing-water volumes per well)were evacuated(purged) from single-level wells MW-1, MW-2A, MW-2B, MW-3A, and MW-3B utilizing disposable polyethylene bailers or a Waters inertial pump equipped with%-inch diameter polyethylene tubing and a check valve Multi- level monitoring wells MW-4 through MW-9 were purged utilizing the Waterra inertial pump equipped with %-Inch diameter polyethylene tubing and a check valve Approximately 0 45 to 5 5 gallons of ground water(a minimum of three casing-water volumes per well)were purged from Ithe multi-level monitoring wells Advanced GeoEnvironmentai,Inc