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c <br /> Mr. Paul Supple <br /> Atlantic Richfield Company <br /> Page 2 of 2 <br /> Please submit a work plan by April 30, 2004,for a pilot test to evaluate the proposed IAS system. <br /> Also include an estimate,with calculations and assumptions, of the hydrocarbon mass'at this site. <br /> Please include analysis for methanol for all soil and groundwater samples in addition to the <br /> proposed analyses for: total petroleum hydrocarbons as gasoline(TPH-g)by U. S. Environmental <br /> Protection Agency(EPA) SW-846 method 8015B; benzene, toluene,ethyl benzene,total xylenes <br /> (BTEX), 1,2-dichloroethane(1,2-DCA), 1,2-dibromoethane(EDB),methyl tertiary-butyl ether <br /> (MTBE), diisopropyl ether(DIPE),tertiary-amyl methyl ether(TAME), ethyl tertiary-butyl ether <br /> (ETBE), tertiary-butyl alcohol (TBA), and ethanol by EPA SW-846 method 8260B. Please <br /> ensure the reporting limit for 1,2-DCA and EDB are at least 0.5 micrograms per liter(µg/L)in <br /> groundwater. <br /> A well/boring permit application and $89 permit fee must be submitted to EHD prior to installing <br /> the monitoring and SVE wells. Once the well/boring permit has been issued, please notify EHD <br /> at least seventy-two hours prior to the initiating the fieldwork. <br /> Please contact Vicki McCartney, REHS, at(209)468-3456 or vmccartneyQsicehd.com, if you <br /> have any questions regarding this letter. <br /> Donna Heran,REHS, Director <br /> Environmental <br /> Health Department. <br /> �7 _�:�v <br /> Vicki McCartney,REHS Nuel C.Henderson,Jr.,RG <br /> Unit IV-Site Mitigation Unit IV-Site Mitigation <br /> cc: Jeff Brooks-URS <br /> James L.L.Barton-CVRWQCB <br />