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Mr.Paul Supple <br /> Atlantic Richfield Company <br /> Page 2 of 2 <br /> • A well screened in Sand 2,and anadjacent well screened in Sand 3 midway between <br /> monitoring well 5(MW-5)and MW-6,may be useful additions to ensure down-gradient <br /> delineation of impacted groundwater. <br /> Please submit a work plan by 07 January 2004 for installation of the SVE with air sparging <br /> system to prevent additional migration of methyl tertiary-butyl ether at the site. Also.submit a <br /> work pian by 17 February 2004 to conduct the necessary additional site characterization. Include <br /> the compounds 1,2-dichloroethane and 1,2-dibromoethane(EDB)in future soil and groundwater <br /> analyses. <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,RENS,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: Vernon Elarth. -URS <br /> James L.L.Barton-CVRWQCB <br /> 3,. <br />