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Fa <br /> G3eo(ngical?edwws 2nc. <br /> C&B Equipment Page 3 <br /> Groundwater Monitoring Report—Site Ciosure Request <br /> Project No.336.2 <br /> r s, October 11,2000 <br /> samples were checked for headspace bubbles, labeled, inserted into foam holders and placed <br /> in an ice chest cooled to 4°C for transport to the laboratory. <br /> Disposable gloves were worn by the sampling technician while collecting all samples. <br /> A chain of custody document, listing all samples collected and their intended analyses, <br /> accompanied the samples from field to the laboratory, thereby providing a means to track <br /> their movement and insure their integrity. <br /> On September 19, 2000, wells MW-1 and MW-101 were sounded, purged and sampled as <br /> above. <br /> 1.3 Laboratory Analyses <br /> r <br /> The groundwater samples collected on August 31 and September 19, 2000 were delivered to <br /> Sherwood Lab (Department of Health Services Certification No. 1400), of Hilmar, <br /> California, for analysis. <br /> The samples were analyzed using the following methods: <br /> ;3 • Method 602 - benzene, toluene, ethylbenzene, total xylene (BTEX) <br /> • Method 8260B — MTBE, ETBE, DIPE, TAME, TBA, 1,2-DCA, EDB, Methanol, <br /> Ethanol. <br /> • Method m8015/LUFT-total petroleum hydrocarbons as gasoline (TPH-G). <br /> The detection limits and the results of the above analyses are listed in Table 2 of Appendix A <br /> and the lab data sheets are presented in Appendix B. <br /> 2.0 FINDINGS AND DISCUSSION <br /> The results are summarized as follows: <br /> • MW-1 tested positive for moderate levels of TPH-G and low levels of BTEX, MTBE <br /> and TBA. <br /> • MW-2 tested positive for moderate levels of TPH-G and low levels of BTEX and MTBE. <br /> • MW-3, 4, 5, 6 & 7 were all non-detect. <br /> • MW-101 contained 36 - 210 ug/l ethanol. <br /> • The domestic well was non-detect for all analytes. <br /> t <br /> F <br />