3M Specialty Materials 3M Center St.

COVAH^ THE DEVELOPMENT SERVICES COMPANY Sponsor: 3M St.

Larry K.

ARllt-03G6 Attached are comments on the 3M Technical Report "Analytical Methodology and Support.

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Attachments to Letter to C.

/873 DuPont Fluoroproducts Chestnut Run Plaza P. 0.

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 Ro b e r t a .

ENV/JM/MONO(2005)1 Unclassified Unclassified AR226-1937 Organisation de Coopration et de Dveloppement Economiques Organisation for Economic Co-operation and Development ENV/JM/MONO(2005)1 13-Jan-2005 E nglish - Or.

AR226-2018 TO; ZIPFEtaWWPSS>MRGATE Dept s Tel No; Subject; RE'S Employes' JWhF' Monitor iwg- 'T&r C-Q.

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AR226-2148 SSG EID942803 RJZ027542

AR226-2195 S David M Rurak 08/28/2001 07:59 AM To: Ta-W ei Fu/SE/DuPont@DuPont co: Stephen J Gissy/AE/DuPont@DuPont, Oscar T Garza/AE/DuPont@DuPont, Fred M Lentz/SE/DuPont@DuPont, Robbin Banerjee/AE/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, Raymond C Butterworth/CL/DuPont@DuPont, John R Flynn/AE/DuPont@DuPont, Am y 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 2ipfel/AE/DuPont@DuPont, Alvin H Gibson_Jr/CL/DuPont@DuPont, Debbie J M ulrooney/AE/DuPont@ DuPont DSubject: Re: ACTION ITEMS FROM APFO DISPERSION MODELLING T a-W ei, You have my support to proceed.

AR226-2214 Debbie J Mulrooney 11/15/2001 11:13 AM , To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Steven L Grise/AE/DuPont@DuPont Subject: Consent Order Requirements - Particle Size Distribution Rob, Here is a spreadsheet with the particle size distribution, particle density and particulate scavenging coefficients based on the defaults in the ISC Users guide, i have left a blank slot for the vapor scavenging coefficients for when Steve and company finish calculating them.

AR226-2296 David M Rurak 02/06/2003 08:19 AM To: Patricia D Buoncuore/AE/DuPont@ DuPont cc: Ann Bradley, Robbin Banerjee/AE/DuPont@ DuPont, Andrea V Malinowski/AE/DuPont@ DuPont, Paul J Bossert/AE/DuPont@ DuPont, Catherine A Barton/AE/DuPont@ DuPont, Gerald L Kennedy/AE/DuPont@DuPont, J ill H Hogan/AE/DuPontVincent Atriano/SSD/DUP@DUP@DUPONT_MHUB, Paul J Bossert/AE/DuPont@ DuPont, John R Bowman/AE/DuPont@DuPont, Andrea V Malinowski/AE/DuPont@ DuPont, M.