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como ovfro ree Hq RST lh. rew ge A k mBeoormm TAFT, STETTINIUS & HOLLISTERLLP 425 WALNUT STREET, SUITE 1800 CINCINNATIs,eOaHmIaOn45202-3957 Fasosn nm Sa am A Fra , Aezze- - 1714 April 21, 2004 TELECOPY AND FEDERAL EXPRESS Dr.

BACK TO MAIN DIETARY ACUTE MALLARD DUCK STUDY REVISED Tissue analysis is now included.

ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES STUDY TITLE HYDROLYSIS BACK TO COMPOUNDS LABORATORY COMPOUND REPORT NUMBER SUMMARIES (LRN) Hydrolysis Executive Summary Hydrolysis Reactions of Pertluorooctane Sulfonate (PFOS) PFOS W1878 Robust Summary HydrolysisReactions of 2-(N-ethylperfluoroctanesulfonamido)-Ethyl Alcohol (N-EtFOSE-ALCOHOL) Hydrolysis Reactions of Perfluorooctanoic Acid (PFOA) Hydrolysis Reactions of 2-(N-MethylperfluoroctanesuIfonamido)Ethyl Alcohol Hydrolysis Reactions of Perfluorooctanesulfonamide (FOSA) N-EtFOSE-OH PFOA N-MeFOSE-OH FOSA W1872 E00-1851 W1880 EL-1132 Robust Summary Robust Summary Robust Summary Robust Summary

Internal Correspondence * I BACK TO MAIN Conmclrcial Chemicals Analytf cal Report 6245 TO: M.

3M Medical Department Study: T-6889.3 3M Medical Department Study: T-6889.3 Analytical Report: FACT-TOX-026 LRN-U2782 Analytical Report: FACT TOX-026 LRN-U2782 Study Title 26-Week Capsule Toxicity Study with Ammonium Perfluorooctanoate (APFO/POAA) in Cynomolgus Monkeys Amended Analytical Laboratory Report Title Determination of the Presence and Concentration of Perfluorooctanoate Fluorochemical in Liver, Serum, Urine and Feces Samples Data Requirement Not Applicable Author 3M Environmental Laboratory Analytical Phase Completion Date Juant seig1n1in, g2001 Performing Laboratories Liver, Serum and Urine Analyses Feces Analyses 3M Environmental Laboratory Building2-3E-09, 935 BushAvenue St.

Sponsor: 3M St.

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STUDY TITLE Extraction of Potassium Perfluorooctanesulfonatefrom Egg Membrane, Albumen, and Yolk for Analysis Using HPLC-ElectrosprayMass Spectrometry DATA REOUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COMPLETED ON September 06,2001 /- PERFORMING LABORATORY / TESTING FACILITY Centre Analytical Laboratories, Inc.

3M General Offices ES38t1M7PCaeln,te1Mr1N10$514.10 July 14,2004 BM ve voi UESPAEnEvaistr,onRmoeontmal44P1r0otection Agency pr W1a2s01hiCnogntsotni,tuDtiCon A2v0e4n6u0e, NW VIA UPS Re: Information on Perfluorooctane Sulfonates and Related Compounds, CD No. 6 Dear Mary: cThoimspocuonntdisn,ueass 3paMr'tosfvooluurntoanrgyoisnubgmdiisaslioognuseowfitdhatEa PoAn preergfalrudoirnogocftluaonreoscuhlefmoincaatless. anWderealraeted enclosing compact disc (CD No. 6) containinag numofbstuediers, as more fully described.

ATTi ACHMENT TO LETTBERoOFa29o08 Alee2.6-1~9/. 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE 1.

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AR226-1999 TABLE 1.