* + DLvaWDriecyerR Johnbsaons RIeMguCioaroproyraSteerTioecsology and 7140 AR 286. 1324 SO3t51 PCa1oun3lv5e0rM0,N08BuSOiSl1d4ti2n-10020200-02..02 5[FR"1738 173 x, 3M Certified Mail on FEHR _ 060M3R _2700535753 DEoPcAumEaesntt--PrRoocoesmsi6n4g28CeAnttne:r Section 8(e) Office of Pollution Prevention and Toxics DEHD -%0-37 2 US EPA 1200 Pennsylvania Avenue NW Washington DC 20460-0001 .

International Research and Development Corporation SPONSOR: COMPOUND: SUBJECT: 3 Company Fluoead Fluorocheatcal Fe-143 Ninety Day Subacute Rat Toxicity Study.

ARR26 _ 0662 N-EtFOSA Acute Toxicity - | 000466 acute oma. sostetty screen ond Netciu) cman rs I CXELEDTobCsa Htires srEiesn i ae ei ys oo 1 00 i LEnRThEbes E fhhem mm s T7A79 000467 sumary Jo acute rad tosicity screen vith -306705C vas condeuted from ApELd 8, 1961 to Apri) 22, 1981 using male and famale albino race ranging in boty eight from 325-299 grams.

AR 226. 0663 N-EtFOSA Pharmacokinetic - [ 000475 | 2 WISCONSIN TORI8I ISSR NE Sponsor: 3M St.

AR R26 -- 0&/3 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity: A mixture containing referred to as PFOS, pFeCr-f9l5u,oroorocatsanaescuolmfponoanteen,twohficFhC-m2a0y6CaEl.so be (1- Octanesulfonic acid) (CA#S 2795-39-3).

AR 226 --OL52 DEHYDROGENASE ACTIVITY (TTC TEST) TEST SUBSTANCE Identity: ArefmeirxrteudretocaonstPaiFnOiSng, pFeCr-f9l5u,oroorocatsanaescuolmfponoanteen,twhoficFhC-mBa0y3EaFl.so (b1e- Octanesulfonic acid) (CAS # 2795-39-3).

eororol ines coun WILMINGTON.

BACK TO MAIN 3M Medical Department Study: T-6395.14 Analytical Report: FACTTOX-111 LRN-U2994 Study Title Oral (Gavage) Pharmacokinetic Recovery Study of PFOS in Rats Analytical Laboratory Report Title Determination of the Concentration of Perfluorooctanesulfonate(PFOS) in the Serum, Liver, Urine, and Feces of Crl:CD@BRVAF/PIUS@Rats Exposed to PFOS via Gavage Data Requirement Not Applicable Author 3M Environmental Laboratory Study Completion Date at signing Performing Laboratories Urine Analyses Feces Analyses 3M Environmental Laboratory Building 2-3E-09,935 Bush Avenue St.

3M General Offices Ps ocEanr e s BEHQ_ OT04. 15607 ARR ~ 804 ertified Mail B DEoPcAumEaesntt-PRroocoesmsi6n4g2C8eAntttenr: Section 8(c) OUfSfiEcPeAof Pollution Prevention and Toxics `1W2a0s0hiPnegntnosnylDvCani2a04A6v0e-n0u0e01NW RE: Ei TSCA 8(E) SUB4STANTIAL RISK NOTICE ON: any = 2} sS SANITIZED HA EI as Dear Sirs: `3cMondhuacsterdecweiitvhedapprreoltiemcitniaverymarteesrulitasl.foTrhaefcoourm-phoosuirtiaocnutfeorinthhailsatteisotnssutbusdtyanicneraists attached.

AR226-2097 Test R,, esul,ts Sample Date Range Concentration Range Action Level Industrial.Hygiene 1/1/97 12(31/97 100% Sample Dt Sample* Duration Type Emptoyee Name BTO; 07 TECHNICAL HOC: 252 BLDQ.3-QEN6RAL 6/25/97 6890 390 A Pers Chemical OWC-143 BTO; 08 TEFLON lOC; MS BLDG. 162 ROOF- GENERAL 7007 7137 362 A 7/EKI7 7138 362 A 7/2107 7139 7C1/97 7219 370 A 371 A 7/21/87 72 368 A 7/2207 7140 370 A 7/22B7 7220 374 A 7/22/97 72% 375 A 7/22S7 7232 384 A 7/2387 7141 7/23B7 7221 386 A <100 A 703(97 7227 374 A 7/23897 7233 331 A 7/24(97 7142 362 A 7/24(97 7222 381 A 7/2497 7228 338 A 7/247 7234 7C5S7 7223 7<2S(97 7229 366 A 354 A 351 A 7/25(97 7235 351 A 7C9S7 7230 8(507 7224 378 .A 378 A ?

AR226-2769 FOR DO POHT USE ONLY CopieB to; POLYMER PRODdcTS OEPT.

HR226 - 3258 440 TRADE SECRET Study Title H-25434: Static, Acute, 48-Hour Screening Test to Daphnia magna Laboratory Project ID: DuPont-11409 AR226 -3258 DuPont11409 AuThoR: Laurie D.

AR226-3337 Migration ofApFQfrQ^ PTF^ It was decided to develop a new method of extraction of APFO from PTFE samples (extraction during 8 h at reQux with 95 % ethanol at pH = 10 on finely ground material) as well as a new method of detection of APPO using capillary gg$ chromatography.

Acute PFOS ACUTE TOXICITY TO AQUATIC INVERTEBRATES (E.G.

L@LC@C'ikcl @ivI s c 0 N@ s I t-i f,c)s T o r r 1C F E.0 X 7 E 4 r, 1,1A L'IE 0 W.