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envzrosQ <br /> Quarterly Sampling <br /> Monitoring Wells MW-1 through MW-4 were sampled and analyzed for Total Purgeable <br /> Petroleum Hydrocarbons quantitated as Gasoline (TPPH) according to EPA Method 8015 <br /> (Modified), benzene, toluene, ethylbenzene and xylenes (BTEX) and methyl-tertiary-butyl- <br /> ether (MTBE) according to EPA Method 8020 Well MW-4 was also analyzed for MTBE <br /> according to EPA Method 8260 Additionally, a duplicate sample and an equipment blank <br /> were prepared and analyzed for quality control purposes <br /> Field monitoring data and this quarter's chemical analytical data for TPPH, BTEX, and <br /> MTBE are summarized in Table 1 The Blaine quarterly ground water monitoring report is <br /> presented in Appendix A <br /> If you have any questions regarding the contents of this document, please call <br /> Sincerely, <br /> Enviros, Inc <br /> � <br /> Greg L Vaughan <br /> Staff Engineer oQ*fES5lpyq� <br /> L U, F <br /> Diane M Lundquis P E <br /> Senior Engineer NO C467+25 <br /> C46725 sl CIVN. <br /> ATE <br /> OF cAui <br /> Attachments <br /> Table 1 Well Concentrations <br /> Plate 1 Vicinity Map <br /> Plate 2 Ground Water Contour/Benzene Concentration Map <br /> Appendix A <br /> Blaine Quarterly Ground Water Monitoring Report <br /> cc Ms Margaret Lagorio, San Joaquin County Environmental Health Division <br /> Ms Elizabeth Thayer, Central Valley Regional Water Quality Control Board <br />�1 <br /> 96373 2 I <br /> _ 1 <br />