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1 <br /> GEomATRIX <br /> Mr.Aobert D.Mihalovicl <br /> Chevron Environmental Management Company <br /> October 4,.200a <br /> Page S' <br /> Based on the results of"the'liuman`heal#h screening nsk evaluation,the presence of petroleum <br /> constituents currently measured:in.so l and shallow groundwateratthe site'should.notpose:an' <br /> y` unacceptable-noncarcinogenic or car' uc risk to future on site residential receptors In <br /> -addition,based on the conservative.nature of the PEA evaluation, the presence of'resid�al . <br /> petroleum constituents in-soiFand groundwater should:also riot pose an:u iaceeptable.-h an., <br /> } health`riskto futurecomme,rciaTworkers,at,thesite - <br /> � J <br /> If you Mve:any questions or,if'we'canli-e of further,ass stance pleaseA not hesitate to call. <br /> f Sincerely yours,; <br /> GEQMAT-RIX.CSNSULTANTS INC:;. <br /> Robert'H Cheung <br /> Gary R:Foote,:A:G: <br /> Senior.Toxleologist Senior Geologist <br /> F # nc /pp:.... <br /> ii Oboc_Safe17000s17241D011update risk lmdoc <br /> Tables l_through 3 <br /> Attachments1 trough,-.5. <br /> cel <br /> Penny Fottreh Ceom'atrt ConsultantInc: <br /> i <br /> � f <br /> f <br />' 1 <br />