GLP10-01-02; Interim Report 37 - Analysis of PFBS, PFHS, and PFOS in Water Samples Collected at the Former Bert Jeffries Property in Decatur, AL - October 2012 Study Title Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 P hone:610-701-3761 Author Susan W olf 3M Environmental Laboratory Interim Report Completion Date Date of signing Performing Laboratory 3M Environmental Health and Safety Operations Environmental Laboratory 3M Center, Bldg 260-05-N-17 St.

Analytical Report Fluorochemical Characterization of Aqueous Samples Decatur Outfall 001 FC Monitoring (E05-0543) Exygen Research Laboratory Report No.

STLS E V E R N TREN 1 STL Chicago 2417 Bond Street University Park, IL 60466 Teh 7 0 8 5 3 4 5 2 0 0 Fax; 708 534 5211 IWVW.St/-/nC.CO/77 SEVER TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 232677 P r e p a r e d F o r : .

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BACK TO MAIN STABILITY IN WATER (HYDROLYSIS) TEST SUBSTANCE__________________ Identity: Remarks: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, FC-116, FC-126, FC-169, or FC-143.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Remarks: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE alcohol. (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).

AR12&-0IOX DIETARY ACUTE MALLARD DUCK STUDY : -W TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (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 substance is a white powder.

3M Environmental Laboratory Final Report- Analytical Study Single-Dose Dermal Absorption/Toxicity Study of T-6053 in Rabbits In-Vivo Study Reference Number: HWI#6329-137 Study Number: AMDT-022195.1 Test Substance: FC-99 (T-6053) Name and Address of Sponsor: 3M SCD Division 367 Grove Street S t Paul, MN 55106 Name and Address of Testing Facility: 3M Environmental Technology & Services 935 Bush Avenue St.

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AR x x r o n i Draft Report 5-Daily Dose Dermal Absorption/Toxicity Study of T-6684 in Rabbits PREPA3RMED FOR: COVANCE6S3T29U-D20Y0 NUMBER: IJSuSlyUE11D, A19T9E7: 005501 Sponsor: 3M St.

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M S M 6 _ O E S Zs MICROBIOS MICROTOX TOXICITY TEST 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).

0% w ACUTE TO XIC ITY 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-602. (1Octanesulfonic acid) (CAS # 2795-39-3).