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1UL&.2.G - 6bQ If fl L_ Barbara Leczynski 05/05/2000 03:37 PM To: Karen Lannon/DC/USEPA/US@EPA, Mary Dominiak/DC/USEPA/US@EPA cc: Subject: followup to perfluorochemicals meeting on April 28 -------------------------Forwarded by Barbara Leczynski/DC/USEPA/US on 05/05/2000 03:31 PM Charles Auer ; 05/05/2000 12:03 PM ro om~ov i JHS- -o zx ro cn CO <=>za ~ ~~ oo om --rn O pq OO To: dchakes1@mmm.com cc: bob.sussman@lw.com, Oscar Hernandez/DC/USEPA/US@EPA, Neil Patel/DC/USEPA/US@EPA, Robert Perlis/DC/USEPA/US@EPA, Barbara Leczynski/DC/USEPA/US@EPA Subject: followup to perfluorochemicals meeting on April 28 Dear Bill and Dan, 3M, We found the meeting very helpful in furthering our understanding of the situation with regard to PFOS and other perfluorochemicals.

fSVO INDEX TO TSCA SECTION 8(e) DOCKET SUBMISSION BY 3M COMPANY (AUGUST 17, 2004) I.

PFOS: A PILOT REPRODUCTION STUDY WITH THE MALLARD FINAL REPORT WILDLIFE INTERNATIONAL, LTD.

ATTACHMENT TO LETTER OF 2/9/05 3M FLUOROCHEMICAL SUBMISSION 3M FLUOROCHEMICAL SUBMISSION TOXICOLOGY, EPIDEMIOLOGY AND MEDICAL SURVEILLANCE PFOA Perfluorooctanoic Acid 1.

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AR226-2314 ^ Charles J Zarzecki ' 03/17/200311:09 AM To: Catherine A Barton/AE/DuPont cc: Subject A ER M O D Met Data Hope you're having a wonderful conference call.

AR226-23 Fle:c8 Em ission Point 662 647 699 652 658 231 232 216 242 274 R022EEF6 R022EEF8 R022EEF7 R022EEF9 Emission Stack Rate Height Temp Velocity <g(s) (m) (Ki (m/s) 0 45.7 350.9 12.3 2.06E-01 18 317 51.8 0 19.2 317 6.46 4.00E-03 21.3 366.5 16.5 2.00E-03 20.7 422 6.8 3.2BE-02 21.7 327.6 4.8 3.32E-Q2 20.3 327.6 0.9 0 18.3 343.2 10.5 1.05E-02 21.3 366.5 18 3.03E-02 33.5 397 13.6 1.73E-04 14.3 299.8 9.1 4.31 E-05 14.9 299.8 12.2 4.31E-05 14.9 299.8 3 8.63E-06 14.9 299.8 6.1 Diameter (mi 0.405 0.457 0.305 0.598 0.497 0.251 0.635 0.396 0.204 0.21 0.762 0.61 0.61 0.61 FlleiCSActA Em ission Point 662 647 699 652 658 231 232 216 242 274 R022EEF6 R022EEF8 R022EEF7 R022EEF9 Emission Stack Rate Height Temp Velocity (g/s) ___ !

AR226-2543 RCRA FACILITY INVESTIGATION PLAN BnPont W ashington W orks W ashington, W est Virginia September 24,1997 DEBS Project No, 7179 Prepared by DuPont Corporate Remediation Group & DuPont Environmental Remediation Services Barley Mill Plaza 27 P.O.Box 80027 Wilmington, Delaware 19880-0027 JSO01918 BD624915 DERS Project No. 7179 September 24,1997 Page!

AR226-2628 CD Q310A03H Appendix 1 Chemical Analysis o f Concentrations in Groundwater C8 (pgA); period 1993 to 1996 D uP ont coordinates M onitoring Eastern Northern Well [m] [m] Freatic la1yer 1947 2204 2190 1998 2082 2084 2243 2296 546 108 350 118 627 119 663 301 683 302 671 303 686 305 633 307 2208 513 308 1950 1950 592 310 608 311 1950 1950 2237 625 312 640 313 405 314 2275 279 315 2058 2106 677 316 689 317 2240 575 318 First aquifer 2235 2275 1543 1930 405 MF-02 277 MF-03 19 N-07 20 N-08 2038 2319 2004 20 N-09 20 N-10 69 N-13 2355 119 N-15 2008 467 N-17 1900 277 N-18 2030 352 N-19 1929 177 N-20 1855 404 N-21 2174 272 N-23 2108 -7 N-25 1975 -100 N-26 1872 -17 N-27 1989 99 N-28 2104 84 W -02 1890 68 W -03 2087 668 W -05 1969 426 W -06 1944 275 W -08 1880 23 W -09 Second aquifer 2030 2174 352 N-19 272 N-23 198S 196$ 1944 9S N -28 420 W -06 27E W -0 8 Date o f sam pling Average 1993 feb '94 okt '94 aug '95 dec '95 mrt '96 concentration 1700 1.6 170 79 3.9 5500 260 82 56 280 250 480 24 100 100 190 70 510 1900 0 0.5 13.0 11.0 13.0 0.0 0.4 0.4 0.2 0.6 0.35 1.5 3.9 0.7 28.0 0.0 0.6 0.2 0.1 33.0 1.9 1.1 9.7 9.0 9.7 15.0 5.9 0.3 1.0 7.3 7.1 0.1 9.4 0.4 0.3 CC C. 0.2 0.1 0.1 0.1 2 170 90 4 5500 1700 260 190 76 56 280 250 480 24 100 510 1900 0 0.1 33.0 1.9 0.8 10.6 12.4 8.5 0.3 13.0 0.0 0.4 0.4 0.2 1.0 7.3 7.1 0.1 9.4 3.9 0.7 28.0 0.2 0.8 0.2 0.2 0.1 0.1 0.0 0.1