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1 <br /> Geological TechAICS Itw Page 5 <br />' Groundwater Monitoring Report <br /> Project No 723 2 <br /> 0 March 21,2005 <br /> actual aquifer conditions was entering the well Groundwater parameter stabilization was <br /> characterized by three successive readings within 10% Well MW-8 went dry before three <br /> ' well volumes were removed <br /> Before a sample was collected, the well's water level was allowed to recharge to at least 80% <br /> ' of the initial level The purge water was placed in a properly labeled 55-gallon DOT <br /> (Department of Transportation 17-H) approved container and temporarily stored on-site <br /> ' The dedicated Waterra pump was used to collect each monitoring well sample Care was <br /> exercised while transferring the sample into 40-m1 VOA vials preserved with hydrochloric <br /> ' acid All samples were checked for headspace bubbles, labeled, inserted into foam holders <br /> and placed into an ice chest cooled to 4°C for transport to the laboratory <br /> ' The sampling technician wore disposable gloves while collecting all samples <br /> A chain of custody document, listing all samples collected and their intended analyses, <br /> ' accompanied the samples from the field to the laboratory, thereby providing a means to track <br /> the movement of the samples and ensure their integrity <br /> M1.3 Laboratory Analyses <br /> The groundwater samples collected on October 21, 2004, were delivered to Excelchem <br /> ' Environmental Labs of Roseville, California (certification#2119) for analyses of <br /> ❑ Benzene, Toluene, Ethyl Benzene, and Xylene (BTEX) by EPA method 8260B <br /> ❑ Total Petroleum Hydrocarbons as Gasoline (TPH-G) by EPA method 8260B <br /> ' ❑ MTBE, DIPE, ETBE, TAME, TBA, 1,2 DCA, EDB by EPA method 8260B <br /> The detection limits for the above analyses are listed in Table 5 of Appendix A, while the lab <br /> ' analytical results are presented in Appendix B <br /> As required under AB2886, groundwater and laboratory elevation data were submitted <br /> ' electronically to GeoTracker on March 14 and 15, 2005 - confirmation numbers 1410221338 <br /> & 1012130558, respectively <br /> 2.0 FINDINGS AND DISCUSSION <br /> ' Groundwater samples were obtained from the existing wells and from the top three screened <br /> intervals in each of the CMTTM wells (except as noted above) <br /> ' The results of the groundwater sample analyses indicate the following <br /> 1 <br />