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*CAM B R I A <br /> Quarterly Sampling <br /> Monitoring Wells MW-1 through MW-7 and VEW-2 were sampled and analyzed for Total <br /> Purgeable Petroleum Hydrocarbons quantitated as gasoline (TPPH) according to EPA <br /> Method 8015 (Modified), benzene, toluene, ethylbenzene, xylenes (BTEX) and methyl- <br /> tertiary-butyl-ether (MTBE) according to EPA Method 8020, and tertiary-butanol, MTBE, <br /> di-isopropyl ether (DIPE), ethyl-tertiary-butyl ether (ETBE), and tertiary-amyl-methyl <br /> ether (TAME) by EPA Method 8260 Additionally, a duplicate sample and an equipment <br /> blank were prepared and analyzed for quality control purposes <br /> Field monitoring and chemical analytical data are summarized in Table I Blame's ground <br /> water monitoring report is presented in Appendix A <br /> Conclusions <br /> Wells MW-1 and MW-2, located in the northern portion of the site had slight increases in <br /> • hydrocarbon concentrations this quarter Whereas, Well MW-6 had lower concentrations of <br /> hydrocarbons than previous quarters The remainder of the wells at this site had <br /> concentrations of petroleum hydrocarbons consistent with historical norms for this site <br /> Recommendations <br /> Site monitoring and sampling will continue according to the established schedule <br /> If you have any questions regarding the contents of this document, please call Joe Neely at <br /> 707-935-4854 <br /> Sincerely, <br /> Cambria Environmental Technology, Inc <br /> Joe W Neely <br /> r c'Cr <br /> Protect an Q��r,w�r�,�%: <br /> LPNF�� <br /> W rn <br /> Diane M Lundquist, P E `C No 046725 <br /> Principal Engineer <br /> C46725 sTgQr'CAI�F �`� <br /> 240-0854 2 <br />