A SURVEY OF SELECTED FLUOROCHEMICALS IN THE DECATUR ALABAMA AREA 2002 SAMPLING Revised Report 11/3/03 Preparedfor: 3M St.

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/q / Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Northern Bobwhite Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-potassium salt.

AR226-2242 EDD0065180 4348500- C8 2000 Actual Emissions Annual Average Vapor Concentrations (ug/m3) 4348000- 4347500- 4347000- 4346500- 4346000 M44a0x0i0m0um con4c4e0n50tr0ation =4241.800005 ug/m344a1t540402135E,4442304060899N 442500 443000 443500 444000 --I 444500 EDD0065181 4348500- C8 Permitted Emissions Annual Average Vapor Concentrations (ug/m3) 4348000- 4347500- 1

AR226-2306 Charles J Zarzecki ' 03/03/2003 01:16 PM To: Catherine A Barton/AE/DuPont cc: Subject: Re: C8 meeting Q Cathy, Yes, they can be done, however, not until Wednesday as I am on m y way out the door to Front Royal.

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AR226-2809 DuPont-12988 TRADE SECRET Study Title H-24750: Static, Acute, 96-Hour Screening Test to Oncorhynchus mykiss Laboratoiy Project ID: DuPont-12988 A u t h o r s : Laurie D.

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226-3648 INTERIM REPORT #1 Analysis o f Oakdale W ater Samples STUDY TITLE Analysis o f Perfluorooctanoic Acid (PFOA), Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFS) in Water, Soil, Sediment, Fish, and Clams Using LC/MS/MS for the 3M Cottage Grove Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE May 19, 2005 PERFORMING LABORATORY Exygen Research 3058 Research Drive State College, PA 16801 , Phone:814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-1-B-10 St.

P-1 Aetzb-nrf > 5 ^ 5 ACUTE TOXICITY TO THE OLIGOCHAETE WORM (Lumbriculus variegatus) 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.

Katherine E.

INTERIM REPORT # 7-Analvsis of Soil Boring Samples STUDY TITLE Analysis of Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Program DATA REQUIREMENTS EPA TSCA Good Laboratory Practice Standards 40 CFR 792 STUDY DIRECTOR Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 INTERIM REPORT COMPLETION DATE October 27,2006 PERFORMING LABORATORY Exygen Research 3058 Research Drive State College, PA 16801 Phone: 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

STLS F V F R N TRENT STL Chicago 2-117 Rond Street University Park, IL 60466 Tel: 708 534 5200 Fax; 708 534 5211 www.stl-inc.com V E R N T R E N T L A B O R A T O R IE S A N A L Y T IC A L R E PO R T JOB NUMBER: 233.2 5 P r e p a r e d 'For : W e s t o n .

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 245318 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 04/07/2006 Signature Name: Richard C.