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1 <br /> CW&gual Tema"uc Page 4 <br />' 3rd Quarter 2005 Groundwater Monitoring Report <br /> Project No 507 2 <br /> October 31,2005 <br /> groundwater stabilized (<10% variation in three consecutive readings), indicating that <br /> formation water representative of aquifer conditions was entering the wells These water <br /> quality parameters were measured at intervals of each well volume purged <br /> Once purging was complete, a water sample was collected from the Waterra tube Care was <br /> taken to minimize sample agitation Once the sample container was filled and capped, the <br /> bottle was inverted, tapped and checked for headspace bubbles The sample container was <br /> identified and labeled with a unique designation, inserted into a foam holder and placed into <br /> an ice chest cooled to 4°C for transport to the laboratory <br /> ' All non-disposable sampling equipment was decontaminated using a hot water washer and <br /> detergent before and between uses Disposable gloves were used by the technician to collect <br /> all samples and were changed with each sample collection <br /> ' A chain of custody document, listing all samples collected, accompanied the samples from <br /> field to laboratory, thereby providing a means to track the movement of and insure the <br /> ' integrity of the samples <br /> All water purged from each monitoring well and not used as a sample was placed in a 55 <br /> gallon DOT approved container These drums were properly labeled and will be stored on <br /> site until their proper disposition can be arranged <br /> Groundwater monitoring field logs are included in Appendix C <br /> 1.3 Laboratory Analyses <br /> ' Theg roundwater samples collected on August 19, 2005, were delivered to Castle Analytical <br /> Laboratory of Atwater, California (Certification No 2480) for analysis <br /> ' The laboratory analyzed the groundwater samples for <br /> Benzene, Toluene, Ethyl Benzene, and Xylene (BTEX) by EPA method 8020 <br /> • Total Petroleum Hydrocarbons as Gasoline (TPH-G) by EPA method 5030/8015 <br /> • MTBE by EPA Method 8020 <br /> ' The results and detection linmts for the above analyses are listed in Table 3 of Appendix A <br /> while the lab analytical results are presented in Appendix B. <br /> ' As required under AB2886, the groundwater elevation data were subnutted electronically to <br /> GeoTracker on October 29, 2005 - confirmation number 3214909195 The laboratory data <br /> ' was not uploaded due to format errors and will be processed as soon as the data disk <br /> problems are resolved <br />