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G <br /> Mr Paul Supple <br /> Atlantic Richfield Company <br /> Page 2 of 2 <br /> Please subxrut a work plan by April 30,2004, for a pilot test toxvaluate 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 /> (13TEX), 1,2-dzchloroethane(1,2-DCA), 1,2-dibromoethane(EDB),methyl tertiary-butyl ether <br /> (MTBE),diisopropyl ether(DIPE),terhary-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 mucrograms 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 welllbonng 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 vmccartne s cehd 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 IV- Site Mitigation <br /> cc Jeff Brooks-URS <br /> James L L Barton-CVRWQCB <br />