The Boeing CompanyR AX& - 06 9-3 Washington, DC FACSIMILE LEAD SHEET Please Check One: ___ Destroy Copy X Sender Will PickUp Date: October 10. 2000 No. of Pages LEAD +_4 Time Sent __ __________ To Charles M A uer___________ _________ Company US Environmental Protection Agency Bldg. ___________ Dept. ___________ City________________ State ___ _________________ Phone No.____________________________ _______ ___ Fax Phone No. (202) 260-8168____________ Check Phone No. __________________________ Special Instructions: From: Matthew C.

-fT f^A fLG 106/ *rr Monitoring PerRuorinated Surfactants in Biota and Surface Water Sam ples Following an Accidental Release of Fire-Fighting Foam into Etobicoke Creek C H E R Y L A.

< BIO CO NCENTRATIO N - R EVISED AR2.3.G- IIO S TEST SUBSTANCE ____________________________________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample from 3M production lot number 217.

^ R5 G_ M-I Telomer Research Program (TRP) Update Presented to U.S.

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 TAFT, STETTINIUS & HOLLISTER LLP 425 WALNUT STREET, SUITE 1800 CINCINNATI, OHIO 45202-3957 513-381-2838 FAX: 513-381-0205 www.taftlaw.com 4 R & & G - llf-lf- CLEVELAND OHIO OFFICE 3500 BP TOWER 200 PUBLIC SQUARE CLEVELAND, OHIO 44114-2302 216-241-2838 FAX. 216-241-3707 COLUMBUS, OHIO OFFICE 21 EAST STATE STREET COLUMBUS, OHIO 43215-4221 614-221-2838 FAX:614-221-2007 Ro b e r ta .

0m DuPont Engineering I February 5, 2003 AR226-1415 DuPont Engineering Barley Mill Plaza - Bldg. 27 Lancaster Pike & Rte. 141 Wilmington, DE 19805 David P.

; 9 pp 3M 3M General Offices Lm K n 55144-ioco 612 733 1110 AR226-1541 - 1003 - l RECEIVER oppt cm : 2003 OCT 2 9 A H i h 01 Bv Courier October 28, 2003 Document Processing Center - CBIC (7407M) 'hh Room 6428 East / Phone 202-564-8940 Attn: TSCA Section 8(e) Coordinator Office o f Pollution Prevention and Toxics US Environmental Protection Agency 1201 Constitution Avenue NW Washington DC 20460-0001 8 EHQ 0 y RE: TSCA 8(E) SUBSTANTIAL RISK NOTICE ON: 1-Butanesulfonamide, 1,1,2,2,3,3,4,4,4-nonafluoro-n-methyl ('N-MePFBA') [CAS 68298-12-4] 63 Dear Sir/Madam: 3M has received preliminary data for a combined repeated dose toxicity study with a reproduction/developmental toxicity screening test in rats conducted with a chemical intermediate, 1-Butanesulfonamide, 1,1,2,2,3,3,4,4,4-nonafluoro-n-methyl [CAS 68298-12-4] (N-MePFBA) indicating reproductive and possible neurotoxic effects.

Enclosure 2 raceAnalyFiteilcdaSelrvices Divisum Pace Analytical Services, Inc. 1700 Elm Street, Suite 200 Minneapolis, MN 55414 Phone: 612.607.1700 Fax: 612.607.6444 3M 3M Multi-city Food Study DecePmrobjeecr t4D-8at,e:2000 Prepared by: Pace Analytical Services, Inc.

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

s r l in y T i n .F.

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

AR226-2308 i-ffe g e f } From : To: D ate : S u b ject: B I Spires Kay G ilm er 3/12/03 3:10P M Fwd: Dupont update > B ill Spires 03/12/03 07:48A M > Director's update: DAPG had discussions with both Th e State of W est Virginia and Dupont concerning the air em issions o f C 8 from the W est Virginia facility.

DuPont Modeling Methodology and Results DRAFT Shimizu Site June 2003 AR226- 06/02/03 IO GJ GJ About the Model Industrial Source Complex Short Term 3 (ISCST3) Sold/used globally, Including in Japan http://www.phoenix-r.co.jp/products/products.htm Input Stack height, diameter Flowrate, temperature Mass of pollutant (kilogram per hour) Local meteorological data (Shlzouka 1997, 98, 99) Output Ambient air concentrations in ug/m3 Max values and locations outside the property line CAB000376 Prevailing wind -- *> R HD H CAB0OO377 Ambient annual ground level concentration in ug/m3 Model Calculations i Ambient air concentrations based onGaussian Equation Concentration a function of a vertical term and a i dispersion term i Vertical term based on stack height, receptor elevation, plume rise, mixing i B H O H Dispersion parameters describe distribution of pollutant in lateral and vertical CAB000378 m Ha<H1 ir CABO0037 9 Shimizu Modeling Inputs Stack Parameters Source ID 1 2 3 4 ssmPmPccoraarresuupp-tbbs))-scbbcreeurrrub((bbccbeaaerllDeereeeddxsxi""tciAAtfroiCfCportrifSSoifninccnerreuupbbpobboweewdrrd''eoeornnr DBCScrubber MP-2scrubber location DPlant DPlant pcolaEpnoPMtlyflaPomn-rp2teoP:rwbcFtuoydAippeldaoerinnlymdgm:iFceErroP- OOOOppppeeeepppprerrreeeOdddrdrrraaaappppaaaaptttteeeeyyyyeeeee,,rr,,rrssssryayy2y2112222eeete0788i44o44aaaa0000nrrrrhhhhddddsooooaaaauuuuyyyyrrrrssssssssj Height, m - Diameter, m 8 0.68(1) 15 0.6 18,2 0.6 16.1 10.6 assumed Flowrate m3/hr 2400 9600 1620 7500 r~ N> (1)GivenInemailof4/17/03from Hidetaka Hlromatsu: 600sommsquaredlametTer.

AR226-2514 From: D ick J C Meijer on 04/03/2002 07:38 A M CET To: Ta-W ei Fu/SE/DuPorrt@DuPont cc: Ton Roelen/EUR/DuPont@DuPont, Stephen R Peck/SE/DuPont@DuPont, Yoshihiro Hayatsu/PO/DuPont@DuPont, Hidetaka Hiromatsu/PO/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, Akito Abe/AE/DuPont@DuPont, O scar T Garza/AE/DuPont@DuPont, Francois P van Langevelde/EU R/D uPont@ D uPont Subject: Re: C -8 analysis at W W lab | Ta-wei, Francois van Langevelde is the Analytical Chemist for TEFLON and FEP.

TRADE SECRET AR226-3163 DuPont-4594 Study Title H-24159: Static, Acute, 96-Hour Screening Test with Pimephales promelas Laboratory Project ID: DuPont-4594 A u t h o r : Robert A.