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BACK TO MAIN WATER SOLUBILITY IN NATURAL SEAWATER AND 3.5% SODIUM CHLORIDE SOLUTION - SHAKE FLASK METHOD 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.

BACK TO MAIN ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity: Potassium Decafluoro(pentafluoroethyl)cyclohexanesulfonate may also be referred to as FC-98.

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)231-1 580 Analytical Report Fluorochemical Characterizationof POTW Effluent Columbus, Georgia (W2336) Centre Analytical Laboratory Report No. 023-014M (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.

BACK TO MAIN CEntre Analytical Laboratories, Inc. 3048 Research Drive State C a ?

Sponsor: 3M St.

: BCiaclaennidaalrRYeepaorrt20fo03EmissionsofPFOA DuPont - Washington Works Ar2 Page 10f2 /8 Biennial Report for Emissions of PFOA DuPoCnatle-nWdaasrhYienagrto2n00W3orks aNontdel:orTmhoediifnifcoartmiaotni.on containeind this document is submittedvoluntarilyandmay be subject tofuture revision o`TfhiIsntreenptor(tLOisI)sutbomSittteepdhepnurLs. uJaonhtntsoonc,omAmssiitsmteannttsAdmmaindiestbryatDourP,oUnStEiPnAa,Meanrticthled14", V2o0l0u3n,taLreytter Actions to Evaluate and Control More specifically, in accordance Emissions of Ammonium with commitments under Perfluorooctanoate (APFO).

Bt Doty REVIEW OF PROLIFERATIVE LESIONS OF THE EXOCRINE PANCREAS IN "TWO CHRONIC FEEDING STUDIES IN RATS WITH AMMONIUM PERFLUOROOCTANOATE Authors Steven R.

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AR226-2045 y Jan M Stouffer 07/23/99 06:27 PM To: cc: Subject: Bobbin Banefjee/AE/DuPont@DuPont, Anthony J Ptgytte/CL/OuPont@DuPont, John J MBrrtink/CUDuPont@DuPont.

AR226-2108 Test Results Industrial jHygiene Sample Date Range Concentration Range 1/1<81 1231/81 Action Leviil 100% ' Sample Dt Sampled Duration Type Employee Name Pers Cheinica!

AR226-2208 / Roger J Zipfel 11/02/2001 11:17 AM To: cc: Subject Robert F Pinchot/DEV/AE/DuPont@DuPont Debbie J Mulrooney/AE/DuPort@DuPont Re: C8 Particle Density D Debbie, I don't realty understand what you are asking for.

AR226-2218 c.h"SE-sh^p-11/-29000'1 "^p6 AM To: cc: Subject: Oebbie J Miilrooney/AE/DuPont@DuPont Re: Revised Spreadsheet [j Debbie, The semiworks facility has been operating since long before the permitting regulations were in place.

jW^^vesti^atiqnResults Report2.wpd AR226-2348 October 23,2003 Mr.