Document QJDgn1O3ME789awJG3mdZR5jR

June 25,2009 Via Federal Express NDf1o0eur9wPH0oaeErnaktll,ktHhtDoaaEnsnkRd1el9oEl7aGnd1v,4loiP-rb0o.Oa0nl5.m0CBeeonntxtael5rs0Sciences fy\ir 3 2 .0 0 (0. ? DAOUWR12o.tofaSt0focesi1.mcunhEemtCiinn6oooegv4nfnnti2:oPtrs8ont8Poin,(tlruelmoDu)tciteCCoeinosnot2nsao0AilnPr0dvPgr0ieer4nC.ov,ateeNtennocWttrtieioornn(MaAnagdielTnCocoyxdices7407M) Dear 8(e) Coordinator: 8EH 09 ocnu-uDuy-i / ooq a Re: POCehcrcafumlupboaretorioshneWaxlaoSnrekorasutFmeaAcSinaliimotynp, lD(ePeRFeHpeswxuAaltt)se-r,CNAewS # 307-24-4 Jersey tTrhehefeisAregnleectnetecdryD'issucPotoonntitinnsufioteerdmfionrtye2or0ue0s9to.ifnTtphheiesrfilrnuefosorurilmntsaatteoidofnssuiebsrsuptmaronvcsiedasemadpntldoinatgshepfroTerScaCPuFAtiHo8xn(Aaer)yofmrfofeimcaesutihrnee.viaebwovoef Sincerely, . AD.irMecitcohra-elRKegapullaanto,rPyhA.Dff.airs A(3M02K) /3J6L6C-:52c6lp0 Attachment (1 page) 88090000282 88090000282 DCN:88090000282 Contains No CM CONTAINS NO C81 DuPont Company Chambers Works, Deepwater, NJ Serum Perfluorohexanoate Anion (PFHxA) Results * Results fo r ID Number 80070 80172 80301 80397 80148 Exposure Group P P P P P Samples Collected March 2009 0.5 ND* 1 0.6 0.7 80138 80161 P P 0.5 <0.5** 80349 P 0.7 Number of Samples Average (ppb) . 8 0.54 1*' Median (ppb) 0.55 Max (ppb) 1 Min (ppb) Std Dev (ppb) ND* 0.28 P = Production Group Results are expressed in parts per billion (ppb). * ND=Not Detected; a value o f 0.1 ppb was used fo r statistical analysis, 0.1 ppb is equal to 1/2 o f the LOD ** <0.5 is detected but less than the limit of quantitation; a value o f 0.25 ppb was used fo r statistical analysis 0,25 ppb is equal to 1/2 o f L O Q Samples Analyzed by Axys Laboratory Sydney, British Columbia, Canada Limit of Detection = 0.2 ppb Limit of Quantification = 0.5 ppb June 9, 2009 Page 1 of 1