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GROUND-WATER IN V E S T IG A T IV E PROGRAM AT WOODBURY, MINNESOTA J a n u a ry , 1967 Palm er v3M Com pany -22.I EXHIBIT EUGENE A .

CL ARI26-1963 me 2ea37/ TFotki.sCopuaatvs To TO arbonmaansteOmFya@saeupalaalUS Corporate MSCorN parste 37P,. 02200O8TISPA Subteine `SEpEhHrOai1m2Y0o0u-ng1l8SS-TCorporate/3MIUS@3M-Corporate Nocsl -- 5 Fepp- sos 14837) am ro espondg ingfo voice messageiatry1a2o0yu01tS4hy83,G.eaanrdyhOpltrsenn2Soefpt3elertbwoedoraydofric0ea0tg,euavleosuoCSmPieEtLerTs,,he n20as t repopn tohp atrstutdy. ou voios message indicate ha you donot have hia na pot he TSCA 86) le fThaeotrea a eamGsanine g you cappAfonh)aSaetineseomosrtsnccawtl5e,odn2Ges0d0tA1nhanfoarlhse0psoe1urrb.meTinItSnceCPdeAadtlSoheecetuceomrorei,nngwnt4aesl)t8baCEdiH3Go0RH5sfvoElhe de hoocupmeenatS sis cilhespehrehaspasteixpnl.ainlsawehsy c1anotan yourolueave any hr Guess ea1 Submission T2SeM2r0eFwie2dc0eikc2MalTPDHoepxt ic&oRelguolagtoyry Services S2Zz = oz SME Admimisvaior 3M TSCA 8(e) Coordinator ~==z 2a35d TFeolx: 6a5g11-517353-A3718723 CONTAIN NO CBI 5 AE A' z2So22.0m MEA --_ Certified Mail April 29,2005 DEoPcAumEeanst-tPrRoocoesmsi6n4g2C8eAnttten:r Section 8(e) No CBI OfficeofPollution Prevention and Toxics U12S0E0PPeAnnsylvania Avenue NW `Washington DC 20460-0001 RDEo:cket NToS.CSAEH8Q(-F)12S0U0P-1P4L8E37MENTAL SUBMISSION: Dear Sirs: pItneherDfaeubcoorevomeab-creterafnoecrfseu2nl0cf0eo0dn,yd3locMfkleustourbnimudimetbt(eerPd.OaSFTd)hr-aebftafsirnceapdlolrrtuepooorrfotcohmfeormttihaacltaislttymuasdnytuuwdfayascotfsuur3biMmnigetmtfaepcdlioliiynteyeusndaetra September of 2001 Wineveastriegnatoewthperofviinddiinnggsaffrionamltrheepporritoornstudfyo.llow-up incidence study that was conducted to Please contact Geary Olsen at 651-737-8569 should you have any questions orifwe can provide additional information.

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wo > WATER POLLUTION PROBLEM IN WOODBURY 3M's Water and Sanitary Engineering department has been investigating along with Woodbury township board and Minnesota Department of Health, complaints of bad odors in well water in Woodbury township since April.

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Ot-May-002 01 :2Spm F rom-CharI as River Labs Argus Div. 90S Shcehy Drive, BJdg.A Horsham.

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AR 236 -- 0786 ACUTE TOXICITY TO AQUATIC INVERTEBRATES (EASTERN OYSTER) IEsTsuBsTANCE 0000000000000 Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206 or L3243. (1-Octanesulfonic acid) (CAS # 2795-39-3).

AS 2392 Misure urgenti per la riduzione dell'inquinamento da sostanze poli e perfluoroalchiliche (PFAS) e per il miglioramento della qualit delle acque destinate al consumo umano N.

AR226-2093 Test Result 6wnple Date Range Cone:entratlon Range Action Level Industrial Hy gmme 1/lffiS IZOIffli 100% Sample Dt Sample* Duration Type Employes Name BTO: 06 TEFLON We: 701 FINE POWDER DRYER-CAST SIDEfK 5/2&85 46259 330 Z 7/1185 .46260 345 Z 9/1BB5 48261 360 Z 32285 46262 330 Z Pers Chemical C-fl/FC-143 C.a/FC-143 C.BFC-143 OfflFC.143 BTO!

American Industrial Hygiene Association Journal ISSN: 0002-8894 (Print) (Online) Journal homepage: https://www.tandfonline.com/loi/aiha20 The Toxicology of the Pyrolysis Products of Polychlorotrifluoroethylene H.