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X55 Enterprise Place <br /> Pa�,e ' of 2 <br /> By letter dated June 22, 2004, EHD directed you to submit a fate and transport model of <br /> petroleum hydrocarbons released at this site. Over two years have passed and EHD has <br /> not received this model. You are directed to submit a fate and transport model to FHD <br /> by Mav 28. 2007. <br /> Based on analytical results reported as non-detect for eighteen consecutive sampling <br /> events, EHD believes the following compounds may be removed from the list of <br /> compounds reported quarterly for groundwater samples collected from all monitoring wells <br /> at this site: 1,2-dichloroethane (1,2-DCA), dibromoethane (EDB), methyl tertiary-butyl <br /> ether (MTBE), diisopropyl ether (D1PE), tertiary-amyl methyl ether (TA-ME), ethyl <br /> tertiary-butyl ether (ETBE), tertiary-butyl alcohol (TRA.), and benzene, toluene. <br /> ethylbenzene, and total xylenes (BTEX). <br /> If you have any questions, please contact Vicki McCartney by electronic mail at <br /> vmccartncy(a'sjcehd.com or by telephone at (209) 468-9852. <br /> Donna Heran, RENS, Director <br /> Environmental Health Department <br /> Victoria L. McCartney, Senior RENS Nuel C. Henderson, Jr., PG <br /> LOP/Site Mitigation Unit 1V Engineering Geologist <br /> LOP/Site Mitigation Unit 1V <br /> c: Ally Colavita - .4dvaiiecciGeoEiivironmental, Inc. <br /> James L.L. Barton, PG - CVRWQCB <br />