Laserfiche WebLink
.1 -r 1TiW1GF <br /> • Quarterly Report - First Quarter 2004 <br /> Former STOCKTON PLATING FacilityO4 MAY 12 PM 1: 32 <br /> I 632 South El Dorado Street, Stockton, California <br /> a <br /> 1.0. INTRODUCTION <br /> At the request of Mr Richard Leland of R and L Business Management of Stockton, Advanced <br /> IGeoEnvironmental, Inc (AGE) has prepared this report for 632 South El Dorado Street, Stockton, <br /> California (the site) This report documents the quarterly ground water monitoring results for <br /> February 2004 The site setting is illustrated on Figure 1 The locations of structures and monitoring <br /> wells on the site are depicted in Figure 2 <br />' Background information, including details of previous site assessment work are presented in <br /> Appendix A Results from current and previous ground water monitoring events are included in the <br /> tables of this report <br /> I ' <br /> 2 0. PROCEDURES <br /> 1 Monitoring and sampling were performed in accordance with guidelines issuedbythe 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 PURGING <br />' On 17 February 2004, 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 monitoring wells MW-4 through MW-8 using dedicated Waterra foot-check value <br />' and polyethylene tubing Temperature, pH, and electrical conductivity were measured at regular <br /> purge-volume intervals using an Oakton water analyzer Purge water stabilization field data sheets <br />' are included in Appendix B Purged water was stored on-site in labeled DOT-approved 55-gallon <br /> drums <br />' 22 GROUND WATER SAMPLE COLLECTION ' <br />' After allowing the monitoring wells to achieve a minimum of 80%recovery of the pre-purge water <br /> volume, water samples were collected from each well using the dedicated rigid tubing <br /> ' r <br />' Advanced GeoEnvuonmental,{tic <br /> 1 <br />