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' Quarterly Report - First Quarter 2003 <br /> , <br /> FORMER STOCKTON PLATING FACILITY <br />' -632 South E1 Dorado Street, Stockton, California <br />' 1.0. INTRODUCTION <br />' At the request of Mr Richard Leland of R and L Business Management of Stockton, Advanced <br /> GeoEnvironmental, Inc (AGE)has prepared this report for 632 South El Dorado Street, Stockton, <br />' California(the site) This report documents the quarterly monitoring results for March 2003 The site <br /> setting is illustrated on Figure 1 The locations of structures and monitoring wells on the site are <br /> depicted in Figure 2 <br /> Background information, including details of previous site assessment work are presented in <br /> Appendix A Results from previous groundwater monitoring events are included in the tables of this <br /> report <br />' 2.0. PROCEDURES <br /> c <br />' Monitoring and sampling were performed in accordance with guidelines issued by the Central Valley <br /> Regional Water Quality Control Board (CVRWQCB) and conform to ground water monitoring <br /> guidelines issued by the San Joaquin County Environmental Health Department(EHD) In addition, <br />' field work was conducted in accordance with the EHD-approved work plan Installation of Depth <br /> Discrete Wells, dated 10 December 1999 <br />' 2 1 WELL MONITORING AND EVACUATION <br />' On 03 March 2003, a Solmst water level meter was used to measure the depth to ground water in <br /> eight monitoring wells (MW-1 through MW-8) and four vapor wells (VW-1 through VW-4) <br /> After ground water depth measurements, a minimum of three casing-water volumes of water were <br />' removed from vapor wells VW-1 through VW-4 using a dedicated,disposable polyethylene bailers, <br /> while three casing-water volumes of water were removed from monitoring wells MW-4 through <br />' MW-8 using a dedicated polyethylene foot-bailers(waterra) Former water-table monitoring wells <br /> MW-1 through MW-3 were not purged because they are currently drowned at approximately 15 feet <br /> below water table and consequently were not utilized for ground water sampling <br />' �P Hconductivity <br /> Temperature, and electrical conductive were measured at regular purge-volume intervals using <br /> P <br /> an Oakton water analyzer Purge water stabilization field data sheets are included in Appendix B <br />' Purged water was stored on-site in labeled DOT-approved 55-gallon drums <br />' Advanced GeoEnvvonmental,Inc <br />