Document NEN2NBMbLBdXad4GgmXab5qk8

May 27, 2009 Via Federal Express DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O. Box 50 Newark, DE 19714-0050 ADRototocemuntmi6oe4nn2:t88P(reo)cCesosoinrdginCaetnotrer (Mail Code 7407M) UOW12.fSa0fis1.chEeiCnnoogvfntioPrsontoin,tlulmDutiteCoinont2naA0lP0vPr0eer4.ov,teNencWttiioonnaAngdeTnocyxics 8EHQ-0509-17530A mi min S3 0 Dear 8(e) Coordinator: Re: POWecarcfsulhupionargtoitohonenaxlWaSnooerrakutsem,APSnaarimokenprls(ePbRuFrHegsx,uAWlt)se-stCVAirSgi#ni3a07-24-4 WroTefhfoteihsrrkeelsneA,cttPegedaerrnDkicseuyrtP'sosbocuninortgfnso,tiirtWnmeuaeeyrsdeot uifVnotiroerg2frei0tnsh0tie9ai.nrfTeapscheuiirlslifttlsyiun.oofrTofirhnsmeaetraesutedimorusnumsibassmsptaaprmnolicvpneilgsdineafgdonrdrteoPastsuFhlHpetsrxTefAcSoaCrufwrAtoioom8nr(kaeterh)yresomfaWfeticataehssuehirnieanv.bgioteovwne Sincerely, Q. AD.irMecitcohra-elRKegapullaanto, rPyhA.Dff.airs A(3M02K) /3J6L6C-5: 2c6lp0 Attachment (1 page) 88090000254 DCN:88090000254 09HAY 2 1ry*> cs2p5r* 42- /^ 00M M N 8N 0C B I DuPont Company Washington W orks, Parkersburg, W Va Serum Perfluorohexanoic Acid (PFHxA) Results S am ple 1 0 Num ber 10015 10031 10034 10036 10044 10053 10069 10072 10077 10094 10108 10110 10130 10136 10139 10141 10146 10148 10155 10168 R e s u lts fo r S am ples C ollected Feb. 2009 Exposure Group O P P O L O O O L M O P P P M P P P O P (p p b ) ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND P=Production M=Maintenance/ mechanic L=Laboratorian 0=Other (Administration, Technology Personnel or Outside Designated Exposure Groups) Samples Analyzed by Axys Laboratory, Sydney, British Columbia, Canada ND=Not Detected The Limit of Detection fo r PFHxA in serum was 0.2 ppb May 14, 2009