received OPPT HCIC ^ HAY200 i 2 4i1 9: j q ^ Study Title T e n n e s s e e R iv e r V a ll e y S a m p le s 26" 1733 Author Mark E.

3M Medical Department Study: T-6295.22 Analytical Report: FACT-TOX-160 LIMS E00-1668 3M Medical Department Study: T-6295.22 Analytical Report: FACTTO X-160 M S E00-1668 Study Title Extended Recovery Study Following a 26-Week Capsule Toxicity Study (FACT-TOX-030) with Perfluorooctane Sulfonate Acid Potassium Salt (PFOS; T-6295.22) in Cynomolgus Monkeys Analytical Laboratory Report Title Determination of the Presence and Concentration of PFOS in Serum and Liver Samples of Cynomolgus Monkeys Data Requirement Not Applicable Author 3M Environmental Laboratory Study Completion Date May 3, 2002 Performing Laboratories Sera and Liver Analyses Sera and Liver Extractions 3M Environmental Laboratory Building 2-3E -09,935 Bush Avenue St.

T-6295.28 Final Report T-6295.28: Analysis of Liver Enzymes, Glycogen, and Perfluorooctane Sulfonate (PFOS) Concentration in Samples from T-6295.25: One-Generation Reproduction Study of PFOS - Mevalonic Acid/Cholesterol challenge and NOEL Investigation in Rats.

3M Environmental Technology and Services PO Box 33331 St.

Attachments to Letter to C.

AR226-2271 ' ' Debbie J Mutrooney " 04/04/2002 01:17 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Bernard J Reilly/AE/DuPont@DuPont Subject: Deposition Results and Modeling Report |i| Rob, Here are the deposition results for the 2003 em issions for Little Hocking and Lake Washington: W atershed D eposition R e su lts - 2003 Em issio Also, here is the final m odeling report: F in a l M odeling Report.di RP026414 E ID 5 8 2 6 0 7

Daikin America Decatur Plant Monitoring January 15, 2004 AR226-2353 EXPQ00161 v*_-/ Daikin America Decatur Plant Monitoring Background Air modeling Surface water/sludge Groundwater/soil Next steps EXP000162 Figure A2.

AIQY 123 H xm rntan ^OMoiaMma AR226-2497 08/31/01 1 1 :0 1 0 :0 2 /13 N 0:1S0 MW &-j' Tl> x i'-'-'' . . . _ * * jn ir r '- ir t August 22,2001 SU rS v'1> *" Ms.

1anraster Laboratories 2 4 2 5 N e w Holland Pike * Lancaster, PA 1 7 601 AR226-2726 Analysis #0813FC - Revision 01 Supersedes Date: None Effective Date: 0 3 2001 Page 1 of 11 Extraction of Low Level FC-143 in Water and Wastewater Reference: Low Level Determination of FC-143 in Water, CH2M Hill, Inc., Oc Cross Reference: The following procedure is cross-referenced in this docun enL SOP-OE-001, "Glassware Cleaning for O r g a n i Scope: This method is designed to extract bC -U o lamrffbnium perfluorooctanoate) from water.

3M Corporate Toxicology and Regulatory Services 3M Center.

3Afl A&2S16- $S7Z 3M ENVIRONMENTAL LABORATORY PROJECT NO.E05-0442 Analytical Report Definitive Study: Quantitative Screening of Commercial Lots of Human Serum Obtained in 2004 for Endogenous Fluorochemicals Using Solid Phase Extraction and Liquid Chromatography/Tandem Mass Spectrometry Laboratory Request Num ber EQ5-0442 Testing Laboratory 3M Environmental Health and Safety Operations 3M Environmental Laboratory' _________________ _ _ _____________________________________________ ;_________ _ 3M Environmental Laboratory Project Lead Mark E.

4ZZ(;3772l ACUTE TOXICITY TO THE FRESHWATER AMPHIPOD (Hyalella azteca) 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.

Commercial-in-Confidence Chemex reference: ENV8010/020737 P-1 Sa* , * 9 0 The growth inhibition of the marine alga Skeletonema costatum by CJ Report for Notox B.V Report issued by: Chemex Environmental International Limited Unit J Broad Lane Industrial Estate Cottenham Cambridge CB24 8SW England April 2007 Sponsor: Notox B.V Hambakenwetering 7 P.O.

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

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244403 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: 02/28/2006 Signature Name: Richard C.