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CrealogccalTcclinuslnc Page 4 <br /> ' Groundwater Momtoring Report <br /> Project No 770 2 <br /> • March 16,2006 <br /> ' among three readings) indicating that formation water representative of aquifer conditions <br /> was entering the wells These water quality parameters were measured at intervals of each <br /> ' well volume purged Wells MW-5 through MW-8 went dry before three well volumes were <br /> 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 foam holders 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 their movement and insure their <br /> integrity <br /> All water purged from each monitoring well and not used as a sample was placed in a <br /> properly labeled 55 gallon DOT approved container and stored on site until its proper <br /> disposition can be arranged <br /> aGroundwater monitoring field logs are included in Appendix C <br /> ' 1.3 Laboratory Analyses <br /> The groundwater samples collected on December 9, 2005, were delivered to California <br /> ' Laboratory services (CLS) (CA ELAP Certificate No 1233), of Rancho Cordova, California, <br /> for analysis <br /> ' CLS analyzed the eleven monitoring well groundwater samples for <br /> • Benzene, Toluene,Ethyl Benzene, and Xylene (BTEX)by EPA method 8015MI8021B <br /> ' • Total Petroleum Hydrocarbons as Gasoline (TPH-G) by EPA method 8015MI8021B <br /> • TEPH-Diesel by EPA method 8015(M) <br /> The detection limits for the above analyses are listed in Table 4A (Shallow wells) and Table <br /> 4B (Intermediate/Deep wells) of Appendix A while the laboratory analytical results are <br /> presented in Appendix B <br /> As required under AB2886, the laboratory analytical and groundwater elevation data were <br /> submitted electronically to GeoTracker on March 17, 2006 - confirmation numbers <br /> 8724632680 and 1885839151 <br />