i t: IRC Summary Analyte Peak Name PFOA 2 S_13C_PFOA PFNA 2 S_13C_PFNA PFOS 2 S_13C-PFOS PFDA 2 S_13C-PFDA PFUnA 2 S_13C-PFUnA PFDS 2 PFDoA2 S_13C-PFDOA PFTrA 2 PFTeA2 p. 1 Created with Analyst Reporter Printed: 14/02/2010 6:41:00 PM RT (Expected) 1.38 (1.36) 1.38(1.36) 2.34 (2.44) 2.30 (2.44) 2.35 (2.53) 2.36 (2.53) 3.32(3.34) 3.31 (3.34) 4.12(4.06) 4.12(4.06) 4.13 (4.10) 4.76 (4.64) 4.76 (4.64) 5.29(5.13) 5.74(5.56) Area 1629900 2766100 355520 2154600 1159300 6761100 156690 2111500 171520 172740 1260200 163950 199680 142130 108440 Modified?

AK.PA6 _ o7ll BIODEGRADATION (301E) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonic acid) (CAS # 2795-39-3).

M &Z6 - 0 7 2 9 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE_________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206 or L3243. (1-Octanesulfonic acid) (CAS # 2795-39-3).

ACUTE TO XIC ITY TO FISH (M UM MICHOG) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-780. (1Octanesulfonic acid) (CAS # 2795-39-3).

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RECEIVED PFOS Ecotoxicological Testing Results OPlfyffQpprison of Effect Concentrations Calculated Using Different Sample Purity M H M rr^an {n fasured concentrations, except where * (nominal).

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A R X & 'O o i CAS Number 1763-23-1, 29081-56-9, 70225-14-8, 2795-39-3, 29457-72-5 / 3M Company / 4/27/2000 l Voluntary Use and Exposure Information Profile Perfluorooctane Sulfonic Acid and Various Salt Forms I.

ARox-oisy Attachments to Letter to C.

BIOCONCENTRATION ARWfr035* TEST SUBSTANCE Identity: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE Alcohol or FM-3422. (1-Octanesulfonamide, N-ethylI.I^^.S.S^AS.S.e.ej^.S.S.S-heptadecafluoro-N-^-hydroxyethyl)-, CAS # 1691-99-2) Remarks: Material is an off-white, waxy solid of uncharacterized purity.

EPA Submissions____________________________________________________________ August 31, 2000_____________________________________________________________ Cover Letter to Charles Auer (EPA) from Bill Weppner (3M) with attachment ______ sheets________________________________________________________________ PFOS______________________________________________________________________ ______ Medical Surveillance and Epidemiologic_________________________________ Interim Report #1, Determination of Serum Half-Lives of Several Fluorochemicals, June 8, 2000 (previously submitted to TSCA 8(e) _____________ docket)________________________________________________________ Data regarding general population OUS blood samples analyzed _____________ by 3M's Environmental Lab in 1999 (no report prepared)_______________ ______ Acute Toxicity________________________________________________________ Report by WARF Institute and accompanying documentation, Primary Skin Irritation and Primary Eye Irritation in Albino Rabbits, Sample _____________ T-1117 (FC-95) November 7, 1974_______________________________ Final Report, Acute Ocular Irritation Test with T-2997CoC in Albino Rabbits, Safety Evaluation Lab and Riker Labs Study No. 0882EB0009, 3M Reference No.

BACK TO MAIN 3M Company EPI-0011 Page 1of 5 INTERIM REPORT Epidemiology M edical Department 3M Company St.

FO RM I 0 6 20-PW O BACK TO MAIN cc: LAB REQUEST BOOK - 42-5W File: Water and Wastewater REQUEST FOR LABORATORY WORK Lab Request No.

ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES FOSA BACK TO COMPOUNDS S TU D Y TITLE LABORATORY OR AUTHOR DATE COMPLETED TYPE Environmental Fate and Transport H ydrolysis Reactions of P erfluorooctanesulfonam ide (FOSA) 3M Environm ental Lab The 18-Day A erobic Biodegradation Study of Perfluorooctanesulfonyl-Based C hem istries _______________________________________________________________ 1 Pace A nalytical Services, Inc. 04/03/01 2/20/01 R obust sum m ary, final report R obust sum m ary, final report