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GLP10-01-02: Interim Report 26 - Analysis of PFBS, PFHS, and PFOS in Surface Water Samples Collected at Bert Jeffries Landfill in Decatur, AL in February 2012 Study Title Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (P FBS ) in G roundwater, Soil and Sedim ent fo r the 3M D ecatur 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 Solutions, Inc. 1400 W eston W ay W est Chester, PA 19380 Phone: 610-701-3761 A u th o r Susan W olf 3M Environm ental Laboratory Interim Report Com pletion Date Date of signing Perform ing Laboratory 3M Environmental Health and Safety Operations Environmental Laboratory 3M Center, Bldg 260-05-N-17 St.

GLP10-01-02; Interim Report 30 - Analysis of PFBS, PFHS, and PFOS in Groundwater Samples Collected at Off-Site Wells on Bert Jeffries Property in Decatur, AL in April 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 h o n e :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.

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BACK TO MAIN TOXICITY TO AQUATIC PLANTS (Marine Diatom, Skeletonema costatum) 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: Sample from 3M production lot number 217.

Taft/ Taft Stettinius & Hollister LLP 4 2 5 W alnut Street, Suite 1 8 0 0 / Cincinnati, OH 4 5 2 0 2 -3 9 5 7 / Tel: 5 1 3 .3 8 1 .2 8 3 8 / Fax: 5 1 3 .3 8 T V 0 2 0 5 /w w w .taftlaw .com C in cin n a ti/C lev e la n d /C o lu m b u s / Dayton / Indianapolis / Northern Kentucky / Phoenix/ Beijing Robert A.

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BACK TO MAIN DIETARY ACUTE MALLARD DUCK STUDY REVISED Tissue analysis is now included.