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1 <br /> Geologicat Tecknfcs Inc Page 7 <br />' Groundwater Monitoring Report <br /> Project No 425 2 <br /> Apnt 27,2006 <br /> The lab results for the above analysis are summarized in Tables 7 through 9 of Appendix A, <br />' and the laboratory data are presented in Appendix B Analytical results are discussed in <br /> Section 3 0 <br />' As required under AB2886, the laboratory data were submitted electronically to GeoTracker <br /> on April 26, 2006 and the confirmation number is 1516478121 <br /> i2,3 Groundwater Sampling Procedure—Domestic Wells <br />' On January 22, 2006, Del-Tech personnel arrived on site, purged and sampled three domestic <br /> wells within a 500-foot radius of the site The hose bib closest to each of the domestic wells <br /> was located, cleaned with bleach and Alconox® then allowed to run for a minimum of five <br />' minutes prior to sampling <br /> Once purging was completed, the flow of water from the hose bib was reduced to a slow <br /> trickle Extreme care was exercised while collecting samples to prevent agitation of the <br /> water Water samples were transferred from the hose bib into 40-m1 VOA vials preserved <br /> with hydrochloric acid while mininuzing sample aeration during transfer of the sample <br /> VOA samples were checked for headspace bubbles, labeled, inserted into foam holders and <br /> placed into a cooled ice chest 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 /> 2.4 Laboratory Analysis—Domestic Wells <br /> The Domestic Well groundwater samples collected on January 22, 2006 were delivered to <br /> Excelchem Environmental Labs (California Certification # 2119), of Roseville, California, <br /> for analysis The samples were analyzed using the following methods <br /> ' a BTEX—EPA method 8260B <br /> a TPH-Gasoline—EPA method 8260B <br /> a Fuel Oxygenates (MtBE, DIPE, ETBE, TAME and TBA)by EPA method 8260B <br /> ' a Lead Scavengers (1,2-DCA and EDB) by EPA method 8260B <br /> ' The lab results for the above analysis are summarized in Table 10 of Appendix A, and the <br /> laboratory data are presented in Appendix B Analytical results are discussed in Section 3 0 <br />