BACK TO MAIN 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE February 2005 Click on Study Title to View Report February 10, 2005 Geary Olsen and Larry Zobel (3M), Comments of the 3M Company to the EPA Sci ence Advisory Board PFOA Review Panel, February 10, 2005 February 10, 2005 John A.

A R 30 - O 38C MICROBIOS MICROTOX TOXICITY TEST TEST SUBSTANCE Identity: Perfluorodecanesulfonate, ammonium salt; may also be referred to as PFDS, FC-120, or 3M Sample J2905-1. (1-Decanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10heneicosafluoro-, ammonium salt, CAS # 67906-42-7) Remarks: Test sample is a mixture of the test substance in water and butyl cellosolve (approximately 25% test substance, 37.5% butyl cellosolve and 37.5% water).

/IRVi- BIODEGRADATION TEST SUBSTANCE Identity: Perfluorodecanesulfonate, ammonium salt; may also be referred to as PFDS, FC-121-X, or 3M Sample E2112 and E2566-1. (1Decanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heneicosafluoro-, ammonium salt, CAS # 67906-42-7) Remarks: Test sample is a mixture of the test substance in water and 2propanol, 1-(1,1-dimethylethoxy).

3M Chemicals 3M Center St.

M&S.6 _ 0637 If Charles Auer ' 05/16/2000 03:42 PM To: waweppner@mmm.com, dchakes1@mmm.com cc: Oscar Hernandez/DC/USEPA/US@EPA, Jennifer Seed/DC/USEPA/US, Barbara Leczynski/DC/USEPA/US@EPA, Karen Lannon/DC/USEPA/US@EPA Subject: PFOS items Following up on my phone call with Bill Weppner on May 15, I want to confirm a few points: 3M has arranged a discussion with the Commission of the EU on May 24 in Brussels to discuss PFOS.

NORTHERN KENTUCKY OFFICE SUITE 340 1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704 606-331-2838 513-381-2838 FAX: 513-381-6613 DAYTON, OHIO OFFICE SUITE 900 110 NORTH MAIN STREET DAYTON, OHIO 45402-1786 937-228-2838 FAX: 937-228-2816 R o b e r t a .

AZ2Z(o- tf3C> February 1, 2005 Data Validation for PFOS/PFOA Oakdale Project (MDH Sample Numbers 200501211-200501219) Sample receipt: Samples were received in good condition.

AR226-2026 E ID 945026 ,!

AR226-2048 / / Ta-Wei Fu 07/30/2001 08:01 AM .

AR226-2196 From: Fred M Lentz on 08/28/2001 07:54 AM To: Ta-Wei Fu/SE/DuPont@DuPont cc: Stephen J Gissy/AE/DuPont@DuPont, Oscar T Garza/AE/BuPont@DuPont, Robbin Banerjee/AE/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, David M Rurak/AE/DuPont@DuPont, Raymond C Butterworth/CL/DuPont@DuPont, John R Flynn/AE/DuPont@DuPont, Amy L Brown/AE/DuPont@DuPont, Thomas W Mahlberg/SE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@DuPont, Chris E Shoop/AE/DuPont@DuPont, Roger J Zipfel/AE/DuPont@DuPont, Alvin H Gibson_Jr/CL/DuPont@DuPont, Debbie J Mulrooney/AE/DuPont@DuPont, Kenneth P Kelch/AE/DuPont@DuPont Subject: Re: ACTION ITEMS FROM APFO DISPERSION MODELLING D Ta-W ei If you have not already done so, please take a moment to review these results with Ken Kelch.

AR226-2202 Flow Wind Ambient Stability Rural Urban Vector Speed Temp Class Mixing Mixing Year Month Day Hour Weg) (m/s) ....

AR226-2216 Chris E Shoop 11/19/2001 03:08 P M _________ _______ _ To: Ralph M Aten/AE/DuPont@DuPont cc: Debbie J Mulrooney/AE/DuPont@DuPont Su bject Particulate / C -8 Em issions from Semiworks Ralph, In about August of this year 1used information from the semiworks air permit application that you were preparing to provide data to the state on total C-8 emissions for the site.

AR226-2311 Paul R Jann 03/13/2003 01:27 PM To: cc: Subject: Catherine A Barton/AE/DuPont@DuPont Wilfred K Whitcraft/AE/DuPont@DuPont, Charles J Zarzecki/AE/DuPont@DuPont, Mark C Hause/DuPont@DuPont Re: air monitoring Q Cathy, Sometimes you need a little real data to satisfy both the Agency and the public when it comes down to sensitive issue like carcinogen HAPs.

EGA TeMchonniictoarlinSgubgroup AR226-2565 EID78Q222 *H aoMAw*M>t Landfill Monitoring and Exposure Summary Goal for Today Understand the contribution of landfills to PFOA levels in the environment Environmental Assessment From Manufacturing Facilities/Landfills 1.

RECYCLED r\D AR226-2636 AR226-2636 MARCH 2003 2ND ROUND C-8 SAMPLING DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Date: June 2003 Project No.: 18983753.00037 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 March 2003 2nd Round C-8 Sampling Introduction On March 27th2003, groundwater was sampled from four monitoring wells at the DuPont Fayetteville Works.