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3M General Offices 3M Center St .

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VGearooPAr.sLaen,tWD, MPH an CorporateMedia Diectr MedialDeparment StGoPair, tiNut5d5i1n4g-10020200-06108 5651173307960936OFf3uc cleyommmoom April 28,2014 Attention Docket Number EPA-HQ-OW-2014-0138 The 3M Company appreciates the opportunity to submit comments on the draft "Health Effects Document for Perfluorooctane Sulfonate (PFOS)".

3M Comments on ANNEX XV PFOA Restriction Report 11 June, 2015 Prepared by Sue Chang, Ph.D.

AR 226 - 0297 BIODEGRADATION (MANOMETRIC RESPIROMETRY -- AEROBIC) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-3041. (1Octanesulfonic acid) (CAS # 2795-39-3).

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pR6-0BEE-25 STUDY SUMMARY FOR WORK PERFORMED DURING 1977-1979 EST SUBSTANCE. -- ---- Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8- heptadecafiuoro-, potassium salt, CAS #2795-39-3) Remarks field: The test substance is a white powder of uncharacterized purity.

. : I CLIENT PRIVATE 5] 16 | PROTOCOL TITLE: TR-a6n2g9e5fiinndRiantg HCeyptoattooxciyctietsy Assay of T-6292, T-6293, T-6294.

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AR 226 1337 MR 267555 REPORT 96-HOUR FRESH WATER ALGAL GROWTH INHIBITION TEST WITH T-4127 SZ a3n3 a52 Z=38o8 ~ a NO'NTOOTXOSXubPrsotjaenctce331413356107 Page 0137+ = oid Tatzr STATEMENT OF GLP COMPLIANCE NOTOX Project 334351 NOTOX BV, `sHortogenbosch, The Nethariands Tihne suadsescrroibcead on ios roefport ha been coroct aported and was conducted in complance The OECD Principles of Good Laboratory Praics which ar essential in conormiy with: The Unie States Food and Drug Admiistaton.

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ARBRE -- 1416 SAMPLING INVESTIGATION RESULTS LITTLE HOCKING WATER ASSOCIATION WELL FIELD WASHINGTON COUNTY, OHIO Date: April 2003 Project No: 714889283762.00010 am `CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 `Wilmington, Delaware 19805 000302, `Samping nvestgatn Resuts ____ Tableof Contents TABLE OF CONTENTS BROUIVE SULIILY consmssmsmsssssmmsmmsmmmns ori 1 TH mmm) EE TO -------- 21 ClO mmm ----) 22 BSrogtoloYommmmmmmmmmmmmmmme------------d 3.0 Sampling APPIOGCh rr wsssmmm----"-- 40 Groundwater Sample Results..............

AR226_ 151) IN THE CIRCUIT COURT OF WOOD COUNTY, WEST VIRGINIA JACK W.