Taft Stettinius & Hollister LLP 425 Walnut Street, Suite 1800/Cincinnati, OH 45202-3957 / Tel: 513.381.2838/Fax: 513.381.0205 /wvwv.taftlaw.com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Northern Kentucky / Phoenix / Beijing Robert A.

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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.

GLP10-01-02; Interim Report 36 - Analysis of PFBS, PFHS, and PFOS in Groundwater Samples Collected from Decatur, AL, 3rdQuarter 2012 Study Title Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sedim ent for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSC A Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisim ha Kesari P.E., DEE W eston S olutions, Inc. 1400 W eston W ay W est Chester, PA 19380 Phone: 610-701-3761 Author Susan W olf 3M Environm ental 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.

Construction Materials Engineering ami Testing g Environmental Engineering and Consulting Geotechnical Engineering m Analytical Sendees m T R A N S M IT T A L TO: Weston Solutions, Inc._________ __ DATE: March 23. 2005______ P.O.

-f\&A6 - 1063 Guide tolde SafeHandling of Fluoropolymer Dispersions r * -.: - :) c di ro ro ro Prepared by the FLUOROPOLYMER MANUFACTURERS GROUP O cto b e r 2001 BZ-101 The Society o f th e Plastics Industry, Inc.

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON.

mm ndrea V Malinowski Corporate Counsel DuPont Legal D-7078 1007 Market Street Wilmington, Delaware 19898 Phone: 302-774-6443 Fax: 302-774-4812 e-mail: Andrea.V.Malmowski@usa.dupont.com M l 2 6 - 132.7 _ 0603- 00315 Mr.

AR226-1744 STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Red Blood Cells and Serum for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher ANALYTICAL REPORT DATE June 2, 2003 PERFORMING LABORATORY / TESTING FACILITY Exygen Research 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Environmental Technology and Safety Services Building 2-3E-09 PO Box 33331 St.

DuPont-13267 -*2^ 6- /6S3> Study Title Ammonium Perfluorooctanoate: Age Effect on the Plasma Concentration in Post-Weaning Rats Following Oral Gavage A u t h o r : Xing Han, Ph.D.

T herIm m u n e Research Corporation Sponsor: 3M Corporate Toxicology Building 220-2E-02, 3M Center St.

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AR2 2 t>- SRPTT-6295.8, T-6316.4, T-6868.2, T-707U, T-7132.1 DT15-B 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Title: Comparative Molecular Biology of PerfluorooctanesoIfonate (PEGS, 1-6295), N-ethyl peril tiorooctanesuIfonamido ethanol (N-EtFOSE, T-6316), N-Ethy!

il RESEARCH Precise Research.