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Wildlife International, Ltd. a.

BACK TO MAIN BIODEGRADATION (Anaerobic Sludge) 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 3M production lot number was 217 (TN-A-2130).

BACK TO MAIN CEntrE Analytical Laboratories, Inc. 3048 Research Drive State College, PA 16801 www.centrelab.com (814) 231-8032 Fax: (814) 231-1253 or (814) 231-1580 Analytical Report Fluorochemical Characterization of Sediment and Sludge Samples Cleveland, TN (W1973) Centre Analytical Laboratory Report No. 023-014 0 (Revision 1) Revision Date 3/27/01 Testing Laboratory Centre Analytical Laboratory, Inc. 3048 Research Drive State College, PA 16801 3M Environmental Laboratory Contact Kent R.

Toxicological Summary PFOS Dictary Chronic Plot Reproductive Study: Mallard TestSubstance: Perforoocincsul(fPoFnOaSe) Structure: est Remarks: potion salt CASH 2795.39 1-Octanesulfonic acid, 1,1,2.2,3,3,4,4,5,5,6,6,7,7.8,88-heptadecafluoroTShoereestdsebssiaamnbcieesnacownhdiittiopnosw,daenrd(pBuMttLyowtas#2d17e)t.rTmihneesdamtopl6ew8a6s.9% by LC/MS, "H-aN ndeMlemRent,al analysis techniques.

_------- sm ee AR226-194T STUDY TITLE Exiacion of PoftoarsAsniaulmysPiesfUlsuicnrgoHoPtLaCns.uEfloenaotseprfaoymMMaaslslaSrpdcSceuroummeannd Millard ivr DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COMPLETED ON September 06,2001 PERFORMINGLABORATORY [TESTING FACILITY Centre AnaSlyu3t0ti4ca8CloRlLleaesbgoee,raactPhoAriDer1si6,v8eI0n1c.

AR226-1970 .

AR226-1977 ;M7 BEV.

AR226-2028 .-;-. :'--:--

226-2047 ^ Roger J Zipfel 07/27/2001 01:30PM To: cc: Subject John E Crum/SBDuPont@DuPont Ta-Wei Fu/CL/DuPont@DuPont Re: C-8 sampling Q John, this is very perplexing information.

AR226-2142 cc; T.

AR226-2617 5 2003-DuET-??

AR226-2622 \ \ 0-I Draft: Prepared at the Request of Council AR226-2622 This report was not issued as shown, but was incorporated into a larger Chambers Works report under the consent order Section 1 Chambers Works ISC3 Modeling Methodology and Results Emission Source Information The ISC3 model was used to calculate ambient ground-level air concentrations for emissions ofC8 from the Chambers Works site.

AR226-2841 <^ Material Tested: Copies ton E.

AR226-2977 FOR DU FONT USE ONLY Study Title Delayed Contact Hypersensitivity Test in Guinea Pigs with H-19173 Study Completed On July 17, 1992 Contracting Laboratory Pharmakon Research International, Inc.