ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredto as PFOS, FC-95, or as a component of FC-603F. (1Octanesulfonicacid)(CAS # 2795-39-3).

ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE ldent4: A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, oras a component ofFC-603F. (1Octanesulfoniaccid)(CAS # 2795-39-3).

MICROBICS MICROTOX(@ TOXICITY TEST TEST SUBSTANCE Identity:MixturecontainingPerfluorooctanesulfonatmea;y alsobe referred toas PFOS, FC-95, oras a component ofFC-3072. (1Octanesulfoniaccid)(CAS # 2795-39-3).

T- 4q 28 Day Percutaneous AbsorPtiOn Study with FC-98 in Albino Rabbits L-44-) Experiment No.: Conducted At: Dates Conducted: Conducted By: 0979ABO630 Safety Evaluation Laboratory Riker Laboratories, Inc.

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3M EnvirOnmental Laboratory Pmjeci No. 05-0210 Interim Report #5: Analysis of West MorganlEast Lawrence Municipal Water Samples Study Title ANALYSIS OF PERFLUOROBUTANESULFONATE(PFBS), PERFLUOROHEXANESULFONATE (PFHS), AND PERFLUOROOCTANESULFONATE(PFOS) IN WATER, SOIL, SEDIMENT, FISH, CLAMS, VEGETATION, SMALL MAMMALIVER AND SMALL MAMMALSERUM USING LC/MS/MS FOR THE 3M DECATURMONITORINGPROGRAM Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR 792 Author Michelle D.

April 1,2008 The Pinousgh GfSoypovills "E17 WATER DEPARTMENT 10MR~g py g.

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CHRONIC TOXICITY TO THE SALTWATER MYSID FE-/ TEST SUBSTANCE Identity: PFeCr-f9l5u.or(o1o-cOtcatnaenseusluflofnoantiec; macaidy,a1l,s1o,2b.e2.r3e,f3e.r4r,e4d,5t,o5,a6s,6P,7F,O7,S8.o8r,8heptadecafluoro-, potassium salt, CAS # 2795-393) Remarks: from 3M lot nuTmhbeetres2t17s.ubsStaamnpcleeiws aaswhsittoerepdowudnedre.r Sample ambient was taken conditions pNrMioRr taontdesetilnegm.enPturailtyandaeltyesremsinteedchtnoiqbuees9.0.49% by LC/MS, 'H-HMR, 'F- METHOD _ Method: OPPTS 850.1350 Type: Flow-through chronic GLP: Yes Year completed: Study completed Species: Mysidopsis bahia 1999.

ADVANCED BIOANALYTICAL SERVICES, ING.

Covance Studies AR226-0/68 The attached report summarizes the results from the assessment of `mitochondrial bioenergetics of hepatic mitochondria isolated from rats treated for 3 weeks with one of 4 doses (plus control) of dietary FC10.

LATHAM & WATKINS sein Ce een STR FYI-of 0o~ 1378 May 12,2000 Sp es, neREE, wn RE FY1-00-001378 ron II Aena BY HAND DELIVERY DiDrr.ecCthoarrles Auer Chemical Control Division OUfnfiitceed OSftaPtoellsutEinovnirPornemveennttaiolnPArontdecTtoixoincAsgency 401 M Street, Southwest WRaosohimn4g0t3o,n,EaDs.tCT. ow2e0r46(0Mail Code 7405) a =o fo Me ~3kc1 Re: 3M Company ~ Additional Information ~~ Conlin HC TBI On Perfluorinated Materials Dear Charlie: Pursuant to our earlier discussion, | am enclosing an analytical report from 3prMo'vsiednevditrhoenmsetnutdaylpmloannistaonridngotphreorgirnafomrmwahtiicohn hraesgaorndliyngjutshtisbepcroogmreamavauinldabelre.cov3eMr of ~~ =& the May 4, 2000 letter to you from Bill Weppner.

@ HAZLER TONr wormTsRseTnceRI TIRSuT a M as n xEST COPY AVAILABLE PanJo-- E4EECCEIVS> JAN271988 RHTbOGaEooRcnhGd.TaalPaEFRRIKNRIIuNNISGCE&sMANUFACTURING COMPANY Noy,riaMonEv SenMPLERIFGER: 7090576 SALE EHTERED?

ARY26-02M0 =oir ER 7 MECHANISM OF TOXICITY OF A UNIQUE PESTICIDE * = ETHYLPERFLUOROOCTANE SULFONAMIDE (NEPFOS), NEB.