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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 N mccartney@sjce.com, if you <br /> have any questions regarding this letter. <br /> Donna Heran, REHS,Director <br /> Environmental Health Department <br /> Vicki McCartney,REHS Nuel C.Henderson,Jr., RG <br /> Unit IV-Site Mitigation Unit N- Site Mitigation <br /> cc: Jeff Brooks-URS <br /> James L.L.Barton-CVRWQCB <br /> 3 <br /> s <br /> k <br />