30 June 2003 To: Mary F.

PHOTODEGRADATION TI ESTe SUBSo TANCT E SUB 00S0 T0A 0 NCE Identity: PPeFrOflAuoarmoomcotnaniouimc ascailtd,, Aammmmoonniiuumm psaelrtf;lmuaoyroaolcstoanobaeter,efPeFrrOe,d FtoC-as a11m6m,oFnCi-u12m6s,alFtC,-C1A69S,#or38F2C5--12463-.1)(Octanoic acid, pentadecafiuoro Remarks: wTahes tneostt ssuufbfisctiaenntcley cuhsaerdacwtearsiz"eCd, ltahboeulgedh (c3u5rr8ednptmi/nufgo)rm.atIi'osnpurity . 3in.d5i%caCtse,s iCt7i,saanmdixCtsupreerofflu9o6r.o5a-na1l0o0g%uefecsotmspuobusntdasn.ceThainsdt0es--ting is currently being repeated using current procedures and best available practices.

MICROBICS MICROTOX TOXICITY TEST TEST SUBSTANCE Identity: aPesrPflFuOorAooacmtamnooniciuacmids,alat,mAmomnmiounmiusmaltp;emrfalyuoarloscoctbaenoraetfee,rrPeFdOt,o FC-116, FC-126, FC-169, FC-143 or as the major `component of aFmC-m1o0n1i5uomr sFaClt-,10C1A5S-#X. 38(2O5c-t2a6no-i1c) acid,pentadecafluoro-, Remarks: The test sample is FC-1015-X.

AR 226 -- 0820 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) IEsTsuesTANCE 000 Identity: ArefmeirxrteudretocaosntPaiFnOiSng, pFeCr-f9l5u,oorrooacstanaescuolmfponoanteen;tmoafyFaCl-s2o0b6eCF or FC-206CF-X. (1-Octanesulfonic acid) (CAS # 2795-39-3).

AR 86 _ 0824 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity: A mixture containing referred to as PFOS, perfiuorooctanesuifonate; may also be FC-95, or as a component of FC-206CF or FC-206CF-X. (1-Octanesulfonic acid) (CAS # 2795-39-3).

AR 886 - 0918 ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity: A mixture containing perfiuorooctanesulfonate, `which may also be referred to as PFOS, FC-95, or as a componenotf FX-3104. (1Octanesulfonic acid) (CAS # 2795-393).

Ar226-1678 Hi i774 of ESIEIIPEiE IEE EE EE PPPiiigloli5 HPiEg oEh ri 7 i[RHH ii it iil z z 33 iih 3333333 884% i safesses BES I i sreszsie 383% 2 3 BESTCOPYAVAILABLE 133 00005

BACK TO MAIN FETAX - FROG EMBRYO TERATOGENESIS ASSAY - XENOPUS TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS, U2723 or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample obtained from 3M production lot number 217.

BACK TO MAIN -.

li Wildlife International, Ltd. -1- ProiectNumber454A.101 PFOS: A 96-HOUR STATIC ACUTE TOXICITY TEST WITH THE SALTWATER MYSID (Mysidopsis bahia) ADDENDUM WILDLIFE INTERNATIONAL, LTD.

oruns tr REVIEWOF PROLIFERATIVE LESIONSOFTHE EXOCRINE PANCREASIN "TWO CHRONIC FEEDING STUDIES IN RATSWITHAMMONIUM [PERFLUOROOCTANOATE Steven R.

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AR226-1996 ^o *. 0.

^--- ^ AR226-2022 -Roger J.

AR226-2035 ^ "Roge J.