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M A 6 - 0g l ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE______________________________________________ __ Identity: A mixture containing perfluorooctanesulfonate; may also be referred to as PFOS, FC-95, or as a component of FC-206CF or FC-206CF-X. (1-Octanesulfonic acid) (CAS # 2795-39-3).

ACUTE TO XIC ITY TO FISH (FATHEAD M INNOW ) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-603F. (1Octanesulfonic acid) (CAS # 2795-39-3).

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Environmental Working Group || Policy Memo: DuPont, Teflon, Water, Contamination, ...

3M GLP10-01-02; Interim Report 23 Analysis of PFBS, PFHS, and PFOS in Groundwater Samples Off-Site 610 Wells; September 2011 GLP10-01-02; Interim R eport 23 - A n a lysis o f PFBS.

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Experiment No.: Conducted At: Dates Conducted: Conducted By: Reviewed By: Acute Ocular Irritation Test with T-3493 in Albino Rabbits /Ume-ojp 0884EB0008 Safety Evaluation Laboratory Riker Laboratories, Inc.

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AR23-03W SOIL ADSORPTION TEST SUBSTANCE Identity: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE Alcohol or FM-3422. (1-Octanesulfonamide, N-ethyl1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl)-, CAS #1691-99-2) Remarks: Material is an off-white, waxy solid of uncharacterized purity.

Quality Assurance Project Plan Multi-City Study Sampling Task (N100672) ' BACK TO MAIN Amendment 1 to Revision No.: 1 Effective Date: Junel6, 1999 Page 1 of3 Amendment 1 to the Quality Assurance Project Plan and Associated SOP's for Empirical Human Exposure Assessment Multi-City Study Sampling Task To June 16,1999 Prepared by Battelle 397 Washington Street Duxbury, MA 02332 (781) 934-0571 APPROVALS Donald Gunster \ Sampling Task Leader ^-- A)P Rosanna Buhl Battelle Sampling Task QA Officer Marcia Nishioka ' Battelle Project Manager JhMA Susan Abbgy| if u (j Battelle Program QA Officer tI ifln Date ' Date VV ?

ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES BACK TO COMPOUNDS STUDY TITLE Environmental Fate and Transport R eady biodegradability o f L-6778 liquid product (BO D /C O D ) Ready biodegradability of L-6778 dried solids (BO D /C O D ) The 18-Day A erobic Biodegradation Study of P erfluorooctanesulfonyl-B ased C hem istries Ecotoxicity Elements Toxicity to activated sludge - L-6778, liquid product 96-hour acute toxicity to fathead m innow - L6778, liquid product 96-hour acute toxicity to fathead m innow - L6778, dried solids LABORATORY OR DATE AUTHOR COMPLETED TYPE 3M Environm ental Lab 3M Environm ental Lab Pace Analytical Services, Inc. 10/08/82 10/08/82 02/20/01 Robust summary, copy of laboratory sum m ary sheet, Robust summary, copy of laboratory sum m ary sheet, R obust sum m ary, final report 3M Environm ental Lab 3M Environm ental Lab 3M Environm ental Lab 10/15/82 11/06/82 11/06/82 Robust summary, copy of raw data Robust summary, copy of raw data Robust summary, copy of raw data