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■ x <br /> t r <br /> 0 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 southeasterly at an approximate hydraulic gradient of 0 007 <br /> o 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 670 <br /> ppb and ND to 3 9 ppb, respectively TPPH was not detected in any of the collected ground <br /> 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) and methanol according <br /> to EPA Method 8015 (Modified), benzene, toluene, ethylbenzene, and xylenes (BTEX) and methyl- <br /> tertiary-butyl-ether (MTBE) according to EPA Method 8020, and ethanol, t-butanol, MTBE, Di- <br /> isopropyl ether, ethyl t-butyl ether, and t-amyl methyl ether according to EPA Method 8260 Well <br /> VEW-3 was also sampled and analyzed for halogenated volatile organics by EPA Method 8010 <br /> Additionally, a duplicate sample and an equipment blank were prepared and analyzed for quality <br /> control purposes <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 /> If you have any questions regarding the contents of this document, please call <br /> Sincerely, <br /> Cambria Environmental Technology, Inc <br /> " C� <br /> ichae] Rrphy <br /> Project Scientist DQ�pffsslav4� <br /> L U'vOQ'�`y <br /> Diane Lundquist, P E <br /> o d � � <br /> Senior Engineer NO C46725 x} <br /> C46725 <br /> arF of el►���° <br /> 369 2 <br />