PCoAsSsNuummePreat7uosrss3o0c3anesutos AR 226-0560 abort RSuMsEsndNouFrmmeeerenLatALNaTCosooonnosg --- ANALYTICAL LABORATORY REPORT oNTHE Determination of the Presence andConcentration of Potassium Perfluorooctanesulfonate (CAS Number: 2759-39-3) in the Serum and Liver of Sprague-Dawley Rats Exposed to PFOS via Gavage Laboratory Report No.

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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).

AR 226 - 0723 ACUTE TOXICITY TO AQUATIC INVERTEBRATES (GRASS SHRIMP) IESTSUBSTANCE ~~~ 0000000 Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95,or as a component of FC-203.

AR 286 _ 021 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: MreifxetrurreedctoonatasinPiFnOgSp,erFfCi-u9o5r,ooocrtaansesauclfoomnpaotneewnhticohf mFCa-y30a0ls3o. b(e1Octanesuifonic acid) (CAS # 2795-39-3).

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

SCToaiaxrNea1mWihienan May 10, 3001 necorves SUSeEPoAmHeusdnnuasrrs AY 23 2001 Wasson0, ose 1200 Pennsylvania Avenue, NW.

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

Attachment | Co Pagel AR226-1775 rath AIR DATA DUPONT WASHINGTON WORKS SITE "efTfhoirstss,ubbmoitthtaolfswuhmimcahriarzeesasasvoaciilaatbeldewiintfhorPmFatOiAonifnraoimr atthethfeoDlluoPwoinntg tWwaoshdiantgatcoonllWecotrikons site: 1.

BACK TO MAIN Study Title Microbial Metabolism (Biodegradation) Studies of Perfluorooctane Sulfonate (PFOS) I I .

BACK TO MAIN Study Title Microbial Metabolism (Biodegradation) Studies of PerfluorooctaneSulfonate (PFOS) IV.

3 h l General Offices 3lLI Center St.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, N-EtFOSAA, FC-128 (acid form) or FC-129 acid.

PERFLUOROOCTANESULFONATE, POTASSIUM SALT (PFOS): A 96-HOUR STATIC-RENEWAL ACUTE TOXICITY TEST WITH THE SHEEPSHEAD MINNOW (C'n'nodon vuriegutus) FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

0 3M Corporate Toxicology 8 Id Rcgulrtoy Servlm 3 M Center, Building 0220-02-E-02 St.Paul.