AR 226-0405 BIODEGRADATION TEST SUBSTANCE Identity: PreefrefrirueodrotoocatsanPesFuOlSfoAnAy,laFmiCd-o1(2et8hoyrl)aascetthaetem;ajmoarycoalmspoobneent of FC-127, FC-129, FC-109, FC-109-X or R1904.

1006 _ McKenna Long Atlanta & Aldridge Denver San LLP Attorneys at Law o Dieg San Francisco CONTAIN NO C& Los Angeles 1900 K Street, NW Washington, DC 2000 6 Washington, DC Philadelphia 3 7* 3 202 .496.7500 Fax : 202 .496 .775 6 .com www.mckennalong Brussels .

ACUTE TOXICITY TO AQUATIC PLANTS (ALGAE) TEST SUBSTANCE Identity:Perfulorooctanesulfonylamido(ethyla)cetate;may also be referredtoas PFOSAA, FC-1 28 or as the major component of FC-127, FC-1 29, FC-1 09, FC-1 09-X or Rl 904.

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BIODEGRADATION TEST SUBSTANCE Identity:Perfluorooctanesulfonylamido(ethyl)acetmaatye;also be referredto as PFOSAA, FC-128 or as the major component of FC-1 27, FC-129, FC-1 09, FC-1 09-X or Rl 904.

AR 226-0HoH BIODEGRADATION TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, FC-109-X or R1904.

SDRrPITST-E6295.8, T-6316.4, T-68682, T-1071.1, T1321 AR226 1903 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY T6295),TNit-leet:hyClomppearrflautoirvoeoMctoalneecsuullafronBaimoildoogyeotfhaPneorlfl(uNo-rEotocFtOaSnEe,suTl-f6o3n1a6t)e,(NP-FEOtSh,yl acepteartfel(uoFrOoSoAcAta,neTs-u70l7f1o)n,amaindde/o(rN-PEer{fFlOuSoAr,ooTc-t6a8n6e8s)u,lPfeornfalmuiodreo(oFctOaSnAe,suTl-f7o1n3a2m)iodfoin Rats and Guinea Pigs following Oral dosing.

1.

LaboratmyReport-Revisionl Analytical Report of Data for PFOS Dietary LC50 Study with Mallards (Sera and Liver) Laboratory Report No.

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So AR224-1907 Report Title Evaluationofthe Northwest Bioanalytical Method Validation Reports for PFOS and Related Analytes in Human Serum or Plasma in Meeting the Requirementsofthe EDABioanalyticalMethod Validation QAI Report No. 405-503 ------ Data Requirement Full Validation of Bioanalytical Method Author Nancy Benson Philippe Ourisson `QUALITYASSOCIATES, INC. 9017 Red Branch Road, Suite 102 Columbia, MD 21045 { `Sponsor 3M Environmental Laboratories 935 Bush Avenue Bldg 2-3E-09 St Paul, MN 55106 Report Date December 31, 2001 Report Number QAI 405-503 Number of Pages 26 337 !

AAR126-0HOG ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity: rPeefrefrlrueodrotoocatsanPesFuOlSfoAnAy,lamFiCd-o1(2et8hoyrl)aascetthaetem;ajmoarycoalmspoobneent of eFtCh-y1l2-7N-,{(FhCe-p1t2ad9e,caFfCl-u1or0o9o,ctFyCl)-s1u0l9fo-nXylo}r-,R1p9o0t4a.ssi(Gulmycsialnte,,CNA-S # 2991-517) Remarks: The test sample is FC-129 referred to by the test laboratory as R1904.