3M Specialty Materials February 13, 2003 3M Center St.

Toxicological Summary PFOS Dietary Chronic Pilot Reproductive Study: Northern Bobwhite Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-potassium salt.

MIN 312/014272 PERFLUOROOCTANESULFONYL FLUORIDE (POSF; T-7661.1) PRELIMINARY TOXICITY STUDY BY INHALATION ADMINISTRATION TO CD RATS FOR 1 WEEK Sponsor 3M Center, 3M Corporate Toxicology, Building 220-2E-02, St Paul, MN 55133-3220, USA.

TestResults AR226-2131 file:///Cl/WINDOWS/TBMP/Mro6mat8C...7-21-81 thru 8-27.-01 80pages.htm ^ Test Results Sampio Date Range Concanttatlon Range Action Level Industrial Hygiene 7/21/81 8/37/01 100% Sample Dt sample* Duration Type Employee Name Pers BTO: LOCt 08 TEFLON 002 A/S- MONOMERS SOUTH TANK FARM - GENERAL 9/22/82 38001 331 Z B/22/82 39002 331 Z 9/22/62 39003 327 2 9/22/82 39004 335 Z 9/22/82 39005 328 2 9/22/82 39006 336 Z Chemical Cone Unit Percent C-8/FC-143 C-8/FC-143 C-a/FC-143 C-8/FC-143 C-8/FC-143 C-8/FC-143 0.17 MPB 0.09 MPB <0.03 MPB 0.09 MPB <0.03 MPB 0.04 MPB 30.4% 16.1% 5.4% 16.1% 5.4% 7.1% BTO; 08 TEFLON LOC: 042 AC1DNEUT PIT-GENERAL 5/4/88 40895 1440 Z C-8/FC-143 <0.03 MPB 5.4% BTO: 08 TEFLON LOC; 045 B-162 ROOF 2nd Level- General &H&V Units 8/20/91 814 480 A 11/4/93 2310 450 A 7/9/97 7137 362 A 7/9/97 7138 362 A 7/21/97 7139 370 A C-B/FC-143 0.341 MPB 60,9% C-a/FC-143 <03 MPB 5.4% C-8/FC-143 0.1 MPB 0 17.9% ^ C-8/FC-143 0.13 MPB g 23.2% C-8/FC-143 0.15 MPB 28.8% 1 of 157 8/28/2001 4:46 PM EID140226 TesfResults 7/21/97 7219 371 A 7/21/97 7225 368 A 7/22/97 7140 !

AR226-2293 ,/"'"' Pebble J Mulrooney 11/04/2002 12:16 PM To: cc: Subject Catherine A Barton/ABDuPont DuPont FYI (C8 Modeling) - Penntt Detennlnation - Discussion wllh DAQ -- Forwarded by Debbie J Mulrooney/AE/DuPont on 11/04/200Z 12:15 PM - k Robert L HItchey r 11/04/2002 10:30 AM To: cc: Subject: Kart G Kronberg/AE/DuPont DuPont, Michael T Evans/AE/DuPont@DuPont, John E Crum/SE/DuPontDuPon( David F Altman/SE/DuPont @ DuPont, Andrea V Malinowskf/AE/DuPont DuPont, M.

/y Charles J Zarzecki 02/24/2003 02:43 PM To: cc: Subject: Catherine A Barton/AE/DuPont Slides Cathie, Here they are.

AR226-2310 y Charles J Zarzeckl 03/13/2003 11:02 AM To: cc: Subject: Catherine A Barton/AE/DuPont Re: Our stance on actual sampling Q Cathie, Actual sampling wilt show lower numbers.

AR226-2326 ^ JohnWMilroyJH 04/04/2003 11:09 AM To: cc: Subject Catherine A Barton/AE/DuPont@DuPont Stephen R Hastings/DDE/DuPont@DuPont, Ann K IVIasse/HO/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont Re: Data for air dispersion modeling Q Stack height is 25 feet.

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AR226-2554 Robert F To: cc: Subject: PInohot 04/24/2000QgjJPM. _ __,,.______,,._-_ Gary w Kennedy/AE/DuPontQDuPont, Susan S Miletl/DuPont@DuPort, Michael E McCord/AE/DuPontQDuPont, Robert C Buek/DuPontQDuPont, Oiane R Shomper/Ae/DuPont@DuPont.

AR226-2814 TRADE SECRET Study Title H-24750: Static, Acute, 48-Hour Toxicity Screening Test with Daphnia magna AUTHORS: Barbra D.

. . . , 301 Spestaley Matern ff SKgerFeronneA20S0s314-401000\0L-072% ARRR6 _35<57 mE VIA UPS Document Control Office (DCO) Office of Pollution Prevention and Toxics (OPPT) US Environmental Protection Agency [1E2P0A1 ECaosnts,tiRtoutoimon6A4v2e8nue, MW Washington DC 20460 Attention: Docket No.

TSCA Document Processing Center Attn : Section 8(e)/FYI p. 1 p. 2 July 28, 2006 Page 5 of 5 Attachment 2 Axys Analytical Services Laboratory - Form IA and Form 2 (2 pages) p. 2 p .3 _ . . . .~ ._ ._ . . . . . -_ .. .. .__ ..,- . ._ ..,._ . ,.- .. . . . . . _ . .. ., . _ . . .. _.. _ _. . . _. . .. . . -- - -- - . . ._ . . . . . _ . . . .

`AptpoTeNO-nrepdortiofx 31.02 Final version CONFIDENTIAL 04.12.2008 APPENDIX TO TNO-REPORT OF STUDY 3M-02 Project / study number: 031.10074/3M-02 TTNNOO QBuiaolsictiyenofceLsife GZae0umtiieBucosrxel2ea2tr1sas.tary Autre Th2P3re0o1NneeCthEse3rL1iaa7dn1ed5sn18 1200 CE4HHoPCaeagrtaeesn.mdaanNobel { Fax 13171518 1601 | In assignment of: I 3M, Medical Department || JStouhdynmBourtieonrhof,Ph.D.

3M General Offices 3M Cente r St .