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VAPOR PRESSURE TEST SUBSTANCE Identity:N-ethylperfluorooctasnuelfonamidoethanolm;ay alsobe referredto as N-ETFOSE Alcoholor FM-3422.

Corporate OccupationalMedicine 3M Center,Building220-3W-05 St.Paul,MN 55144-1000 651 737 4'@30Telephone 651 733 9066 Fax 7.

ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity:A mixturecontainingper-fluorooctanesulfonamtaey; alsobe referredtoas PFOS, FC-95, or as a component ofFC-206CF or FC-206CF-X. (1-Octanesulfoniacid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatmea,y alsobe referredtoas PFOS, FC-95,oras a component ofFC-3072. (1Octanesulfoniaccid)(CAS # 2795-39-3).

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ACUTE TOXICITY TO AQUATIC INVERTEBRATES TEST SUB-STANCE (DAPHNIA MAGNA) Identity:Mixturecontainingperfluorooctanesulfonatwehich may also be referredtoas PFOS, FC-95, or as a component of FC-203FC. (1Octanesulfoniaccid)(CAS # 2795-39-3).

TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatmea;y alsobe referredto as PFOS, FC-95, or as a component of FC-206CF or FC-206CF-X. (1-Octanesulfoniacid)(CAS # 2795-39-3).

SSSCREmRE tIe ENoRoong RIEOR"G3/6,7 3M PWoFrOkSin(gppMb)emLeovrealsndinuCmurorneDnattaanQduaHliisttoyrAicsaslesHsummeantn (of the Mean Populations) and Range of `This report documents Battelle's evaluation of the statistical quality and defensibility of 12 data sources ofserum perfluorooctanesulfonate (PFOS) levels found in non- occupational human populations.

ACTIVATED SLUDGE RESPIRATION INHIBITION TEST EEX TESTSUBSTANCE -- _-- - Identity: PFCe-r8f5l.uor(o1o-cOtacnteasnuelsfuolnfaotnei;c macaidy,a1l,s1o,2b.e2.r3e,f3e.r4r,e4d.5t,o5,a6s.6P.7F.O7.S8.o8r.8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: from 3M lot nuTmhbeetres2t17s.ubsStaamnpcleeiswaaswhsittoerepdowudnedre.r Sample ambient was taken condifions, pNrMioRr taontdesteilnegm.enPturailtyandaeltyesremsinteedchtnoiqbuees9.0.49% by LC/MS, 'H-HMR, '*F- METHOD a EE Method: OECD 203 Test type: Stalic acute GYeLaPr: CYoemspleted: Study completed 1999.

AR226-012] FE-RY TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) TEST SUBSTANCE -- Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95 or aspartof the mixed product FM-3820 (see Remarks). (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8.8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The test sample is FM-3820, a mixture of the test substance in diethylene glycol butyl ether and water (approximately 24-28% test substance in diethylene glycol butyl ether and water).

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AR226-2977 FOR DU FONT USE ONLY Study Title Delayed Contact Hypersensitivity Test in Guinea Pigs with H-19173 Study Completed On July 17, 1992 Contracting Laboratory Pharmakon Research International, Inc.

AR226-3058 Study Title 100-Person Human Patch Test with H-2205S (Test Item) Laboratory Project ID Haskell Laboratory Report No. 647-96 Study Completed On September 30, 1996 Contracting Laboratory ConTox Limited 3408-50 B Street Philadelphia, Pennsylvania 19134 Author David Gabriel for E. i. du Font de Nemours and Company Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, P. 0.

AR226-3080 DuPont HLO-1997-00636 TRADE SECRET $ftHlym Toxicity ofH-22387 to the Freshwater Alga, Selenastmm capricomutum HMfceH Laboratory Project 8P Haskell Laboratory Outside Report No. 1997-00636 Teat Guidelines Organisation for the Economic Co-operation and Development(OECD) Guideline for Testing Chemicals: 201 EU Commission Directive 92/69/EEC, Method C.3 U.S.