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l 1 <br /> CAMBRIA <br /> i <br /> flow direction is generally to the northeast with some variance to the southeast, at an <br /> approximate hydraulic gradient ranging from 0 004 to 0 02 <br /> © Ground water sample analytical results for Wells MW-1 through MW-5, RW-1, <br /> RW-2, and VEW-1 through VEW-4 indicated benzene and MTBE concentrations <br /> ranged from ND to 0 65 ppb and ND to 740 ppb, respectively TPPH was not <br /> detected in any of the collected ground water samples A chemical concentration <br /> map is presented on Plate 2 <br /> Quarterly Sampling <br /> Wells MW-1 through MW-5, RW-1, RW-2, and VEW-I through VEW-4 were sampled and <br /> analyzed for Total Purgeable Petroleum Hydrocarbons quantitated as gasoline (TPPH) <br /> according to EPA Method 8015 (Modified), in addition to benzene, toluene, ethylbenzene, <br /> xylenes (BTEX), and methyl-tertiary-butyl-ether (MTBE) according to EPA Method 8020 <br /> Well VEW-3 was also sampled and analyzed for halogenated volatile organics by EPA <br /> Method 8010 Additionally, a duplicate sample and an equipment blank were prepared and <br /> analyzed for quality control purposes <br /> Field monitoring data and chemical analytical data are summarized to Table 1 Blaine's <br /> ground water 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 /> C��" 9W <br /> Thomas Magney <br /> Project Geol st <br /> Q�pFESSrc-N�( <br /> LEIrn <br /> r�,�p���G <br /> Diane M Lundquist, P E <br /> Principal Engineer No 0467215 <br /> C46725 <br /> Or C. <br /> 240-0821 2 <br />