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P <br /> Cambria Environmental Technology, Inc (Cambria) evaluated water-level measurement data <br /> and prepared a ground water contour map (Plate 2) Ground water appears to flow <br /> northeasterly to easterly at an approximate hydraulic gradient of 0 013 to 0 006 <br /> a Ground water sample analytical results for Wells MW-1 through MW-5, RW-1, RW-2, and <br /> VEW-1 through VEW-4 indicated MTBE and BTEX concentrations ranged from ND to <br /> 210 ppb and ND to 0 75 ppb, respectively TPPH was not detected in any of the collected <br /> ground water samples A chemical concentration map is presented on Plate 2 <br /> Quarterly Sampling <br /> Wells MW-1 through MW-5, RW-1, RW-2, and VEW-1 through VEW-4 were sampled and analyzed <br /> for Total Purgeable Petroleum Hydrocarbons quantitated as gasoline (TPPH) according to EPA <br /> Method 8015 (Modified), in addition to benzene, toluene, ethylbenzene, xylenes (BTEX), and <br /> methyl-tertiary-butyl-ether (MTBE) according to EPA Method 8020 Well VEW-3 was also <br /> sampled and analyzed for halogenated volatile organics by EPA Method 8010 Additionally, a <br /> duplicate sample and an equipment blank were prepared and analyzed for quality control purposes <br /> Analysis for methanol by EPA Method 8015 and fuel oxygenates by EPA Method 8260 has been <br /> discontinued due to the fact that concentrations of fuel oxygenates other than MTBE have been ND <br /> in all wells for two consecutive quarters <br /> Field monitoring data and chemical analytical data are summarized in Table 1 Blaine's ground water <br /> monitoring report is presented in Appendix A <br /> Quarterly sampling and monitoring will continue on the established schedule <br /> If you have any questions regarding the contents of this document, please call <br /> Sincerely, <br /> Cambria Environmental Technology, Inc. <br /> Mike Prinz <br /> ZE <br /> QRO'r�S�10 <br /> LU F?G� <br /> w M <br /> Diane M Lundquist, P E No 046725 <br /> Senior Engineer <br /> C46725 ` q CAVIL <br /> OF CkF <br /> 240-0823 2 <br />