* - XYsi8 rheynRE.SEARCH Attachmen2t AR226~ 1774 Air Sampling Fluorochemical Report [ DuPont Washington Works -- Air Sampling Program Round 9 r Exygen Research Report No.

SolubilitEystimateofFC-95 by use of XerlexTOC Analyzer WATER SOLUBILITY (BY ANALYSIS OF TOG) TEST SUBSTANCE Identity:Peffluorooctanesulfonatmea;y alsobe referredto as PFOS or FC-95. (1-Octanesulfoniaccid,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-p,otassium saltC,AS # 2795-39-3) Remarks field: The testsubstance isa whitepowder (3M Lot 583) of uncharactedzed purity.

FinalReport Salmonell-aEscherichicaoli/N4ammalian-Microsome ReverseMutationAssay withPFOS PREPARED FOR: 3M CorporateToxicology COVANCE STUDY NUMBER: 20784-0-409 C 0 V A14-@EC@- THE DEVELOPMEW SERVW.ESCOMPAW FINAL REPORT SALMONELLA ESCHERICHIACOLI/MANUAALIAN-MICROSOME REVERSE MUTATION ASSAY WITH PFOS AUTHOR Michael S.Mecchi,MS PERFORMING LABORATORY Covance LaboratorieIsnc.

AR 286 - 3409 ~ ~ 13 i - 000192 x As arm + Et. ouPo of Nouns 5 Compa T neroSeT wn 15858 Toc TRIALMEDICINE i on .Yagil Ps Lond Ao (ll CONFIDENTIAL Re, 4g ELAR By a o | oisasstos on isomocamacus wre 31 | Ekeohn ulE y 20, 5.

AR 226 -- BIS - --_ 39 @i _ 000378 iE RE] : C C Fetued sium AR 826 34S C ~ o C8 Level - Current Washington Works Female Employees Number of Samples 56 Range .0:013-5.1 " Average 0.92ppm C-8 Namber Above 0.05ppmC-8 53 ww gam v4 wm ge wo 3s ww gamom ow og mv oso nm gg ROL: Lar C & : 000379

17 ~ Pe D i --_ ARRRG -- 34-40 44 000399 oo ARRRE = 34-40 0% & =, ) WTAeSrHlIoNnGeTOdNivWiOsRiKoSn Thy eens cg - ~ let i Septenber 28, 1582 || ~D= 3 Px:J Tor Re. zeRE - fron: a. 6.

2) OECD 402-OPPTS 870.1200, Acute dermal toxicity (rat), 132010 Acute Dermal Toxicity Study in Spraque-Dawley Rats Study Number: 132-010 i ACUTE DERMAL TOXICITY STUDY OF T-7485 APPLIED TO SPRAGUE-DAWLEY RATS STUDY NUMBER: 132-010 SANITIZED SPONSOR 3M Corporate Toxicology 3 M Center, Building220-2E-02 P.O.

"W"cmcorcera,esDe@baotriaatmom> ovmonot0022a Pu bt MH2203557 To NCIC OPPT@EPA JE -- nee Subject 0973012010 Letter To EPA Docket Center Taft / ceerating 125 vears = DTaefbtoSreathinMicuCsr&eaHolLleegarlLAsLsistant 4Ci2n5ciWnanlantu,tOSneot4,52S0u2-e39156700 Tel 513.331.2638+ Fax. 3133810205 `www. taftlaw.com / mccrea@taftiaw.com rI1ni9tte1renia1tRoebfveeedunesuereda,SteaarxnvediscceianncanuotlaCboerntu2sa3ei0dn,eDdios1rclhoIsesurpec:uopmAomsusnpeircoofavt1ii)doenavf(aonircainiundTgirnpegaesaunarayclhremgueunrdatetri)otsh,oaeldrvmmiceaenl(dfeady) aRderveesnsueedCohedreeoirn (2) promoting, marketing of recommending 0 ancihr party any vansactin or mater apTlhrhioesnrmuieieesdesacoIgnfefyiomdueanryteicaceloinvtIeafdiynotuisnafarornmnsaotmtiioasnnitihoantntseanntdeeidorrr.eeypp-eelnaits.enetunspelvayinegdihededi,sscelanotdsteuorrrenoeyoyfrwteolhrykm&pe.rsomsdauacgntedorr edelete he message and any atachments 3 2n CONTAINS NO cB

ARRAG -- | 3] 3 2= e3m2 S3 ZB3o5 =x 35 FLUORINATED SURFACTANTS IN FIRE FIGHTING FOAMS: ANY INPUT FOR WATER MIST TECHNOLOGY Martial PABON, PhD DuPont de Nemours (France) Chantereine, Mantes le Ville F-78202 Mantes la Jolie Cedex & | Structure of a fluorinated surfactant Hydrophilic head | L.A nar perfluorinated chain Ex.

AR226-1398 | irae oni m albino E. 1. ou Pont o Niemnours & Company WILMINGTON, DELAWARE [-- - HD") Serenbets - eep AR R26 -- 1398 : November 23, 1982 PERSONAL & cONPIDENTIAL JP.OLWYwM.

2 crfateis nrue ey To DewacwosypspnDeGrgSmEmDcPaGAmS,SdEGoEAhDLaA.kSeKGasPrieA@n,mamsmcoooenmDrCIaUaSdElPADLCSIGIEPSAEBPaAtSa, Subject PFOSToms Following upon my phone call wi Bil Wepprer on May 15, 1want confi afew points i23MThancaicstuaiatpedrr1aeheanpdmiegsaecoutesfrnsmgidyoapnaratiwvciietpihlapntthaoesCp.enorSsmWmwiil fsowifaortdhnecoEpUyoofncMomamyun2i4ciantBiornsuesstasboldiiesshclinugssshePFmOeSe.tin|g Tfhe onextrpaochkmatgesetaionfg3otMfFnfFioOrmSamoliiornneons,PFOS wil come in this Thursday (May 18).

ia CC AR22671572. - o 8 Level - Current Washington Works Female Employees Number of Samples 56 : Range .0.013-5.1 .

| Northwest Bioanalyical RSetpuodrytNNoo..NNWWBBRSS999--111136 Quantitative Determination of PFOS, PFOSA, PFOSAA, PFHS, POAA, M556 and M570 in Human .

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