BOD/COD IPA and wa --I mwwwmmrvp" BIODEGRADATION TEST SUBSTANCE Identity:PerfluorooctanesulfonatAem,monium salt;may also be referred toas PFOS NH4+ saltor FC-93. (1-Octanesulfonicacid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafalmumornoi-u,m salt,CAS # 29081-56-9) Remarks: The testsample isa mixtureofthe testsubstance in isopropanoland water (25% testsubstance,20% isopropanol,55% water).No calculationwsere made toadjustfortheactualconcentration ofthetestsubstance inthe testsample.

HYDROLYSIS (ALKALINE) TEST SUBSTANCE Identity:N-ethylperfluorooctanseulfonamidoethanolm;ay alsobe referredto as N-ETFOSE Alcoholor FM-3422.

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ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatmea;y also be referredtoas PFOS, FC-95, oras a component ofFC-203C and L-5440.

ACUTE TOXICITY TO FISH (BLUEGILL SUNFISH) TEST SUBSTANCE Identity:MixturecontainingPerfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component ofFC-206A. (1Octanesulfoniaccid)(CAS # 2795-39-3).

Dr.ChadesReich ExecutiveVice President December 15,2000 3M SpecialNtbyterial Mw*ets 3M CenterB,uilding220 St.Paul,MN 55144-1000 6517330439 651575 8001 Fax CERTIFEED NUIL Document ProcessingCenter(7407) ATTN: Section8(e)Coordinator OfficeofPollufioPnrevenfionand Toxics US EnvironmentalProtecfioAngency 401 M Strea@SW_ Washington,DC 20460 Re: TSCA 8(e)NoticeforPerfluorooctanSeulfonylFluoride-basePdroductionProcesses Dear Sir: PursuanttoSection8(e)oftheToxic SubstancesControlAc@ 3M isreportingthedraftresults of an updateof a retrospecticvoehortmortalitsytudyofworkersattheDecatur,Alabama manufacturingfacilityT.he studyupdatewas performedby theUniversityof Mnnesota!

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p. 1 ~-~,ata6~ ~687 INTERIM REPORT #23 Analysis of Sediment Sample s STUDY TITLE Analysis of Perfluorooctanoic Acid (PFOA) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LC/MS/MS for the 3M Decatur Monitoring Progra m 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: 610-701-376 1 MERIjVI REPORT COMPLETION DATE May 2, 2006 PERFORMING LABORATOR Y Exygen Research 3058 Research Drive State College, PA 1680 1 Phone : 814-272-1039 STUDY SPONSOR 3M Company 3M Building 0236-01-B-10 St.

INTERIM REPORT #22 - Analvsis of Soil Samples STUDY TITLE Analysis of PerfluorooctanoicAcid (PFOA) in Water, Soil, Sediment, Fish, Clams, Vegetation, Small Mammal Liver and Small Mammal Serum Using LCMSMS 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 September 22,2006 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.