AR226-2159 Robert F Pinchot 07/12/2003 12:33 PM '. :: -.Ac-^l^'~ To: David M Rurak/AE/DuPontQDuPont, H David Ramsey/SE/DuPont@DuPbnt, Stephen J Gissy/AE/DuPont@DuPont, Robert L Ritchey/CL/DuPont@DuPont, John J Mentink/CL/DuPorrt@DuPont, Chris E Shoop/AE/DuPont@DuPont, Bernard J Reilly/AE/DuPont@DuPont.

AR226-2207 ^ Debbie J Mulrooney 11/02/2001 09:43 AM To: cc: Subject: Robert F Pinchot/DEV/AE/DuPont@DuPont C8 Particle Density Rob, In addition to the particle size distribution, I need a particle density in order to start doing a sensitivity analysis.

AR226-2221 .

AR226-2247 From: To: cc: Subject: Bernard J Reilly on 01/15/2002 04:37 PM ' David M Rural</AE/DuPont@DuPont, George H Senkler_Jr/AE/DuPont@DuPont, Paul J Bossert/AE/DuPont@DuPont.

GUM 699 ENGINEERING COMPUTAIN (M "2.4 - tool calc AR226-2303 SHEET I 1 - 30-0 assumption I rs o recpt child aI 4 I R.Pincho t inhalation x - source 6: 0 t I ()uinput. parameters 30 u ON ',SE61414CAriDsrORkilN . .

AR226-2328 ^ J Bart Ruiter 04/08/2003 07:34 AM To: cc: Subject: Maria S Angelo/AE/DuPont@DuPont, Richard S Vickery/AE/DuPontQDuPont, Thomas R Morgan/AE/DuPont@DuPont, Mary A Kaiser/AE/DuPont@DuPont Stephen W Gonstable/AE/DuPont@DuPont, Catherine A Barton/AE/DuPont@DuPont, Robert A Reich/AE/DuPont@DuPont Charnbers Works: Effluent and River Draft Sampling Plan Maria, Rick and Tom I upgraded the Phase I sampling plan for the effluent and river based on your comments.

AR226-2388 / v CC: T.

AR226-2628 16 Appendix 1 Chemical Analysis of Concentrations in Groundwater C8 (pg/l); period 1993 to 1996 DuPont coordinates Eastern Northern lm] [m] Monitoring Well Freatic layer 1947 546 108 2204 350 118 2190 627 119 1998 663 301 2082 683 302 2084 671 303 2243 686 305 2296 633 307 2208 513 308 1950 592 310 1950 608 311 1950 625 312 1950 640 313 2237 405 314 2275 279 315 2058 677 316 2106 689 317 2240 575 318 First aquifer 2235 2275 405 MF-02 277 MF-03 1543 1930 19 N-07 20 N-08 2038 20 N-09 2319 20 N-10 2004 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 1975 -7 N-25 -100 N-26 1872 1989 -17 N-27 99 N-28 2104 1890 2087 1969 1944 1880 84 W-02 68 W-03 668 W-05 426 W-06 275 W-08 23 W-09 Second aquifer 2030 352 N-19 2174 272 N-23 1989 99 N-28 1969 1944 426 W-06 275 W-08 Date of sampling 1993 feb '94 okt "94 1.9 0.5 13.0 9.7 9.7 11.0 5.9 0.3 13.0 0.0 0.4 0.4 0.2 3.9 0.6 0.7 28.0 0.35 0.0 1.5 0.6 0.2 0.3 0 0 0 Average 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 0.1 33.0 1.1 9.0 15.0 1.0 7.3 7.1 0.1 9.4 0.4 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

AR226-2781 FOR W FONT USE ONLY Cople* to E.

AR226-2802 TRADE SECRET Study Title H-24648 and H-24020: Repeated-Dose Oral Toxicity Study 14-Day Feeding Study in Mice Laboratory Project ID: DuPont-5206 AUTHOR: Susan A.

- AR226-2881 B.

AR226-2896 E.

AR226-2992 Baugy, June 17, 1993 STUDY NO. 920083 E PRIMARY CUTANEOUS IRRITATION Sponsor: ELF ATOCHEM SA La Defense 10 Cedex 42 92091 PARIS LA DEFENSE FRANCE .Company Sanitized, Does not contain TSCA ^''l' TRIAL COMPOUND : Cutaneous primary irritation index.

TRADE SECRET DuPontHL-1997-00598 AR226-3079 Study Title ly^NHALATTOANPPROXIMATE LETHAL CONCENTRATION (ALC) IN RATS LABORATORY PROJECT ID: HL-1997-00598 AUTHOR; David P.

AR226-3131 TRADE SECRET Study Title H-24119: Oral Approximate Lethal Dose (ALD) in Rats Laboratory Project ID: DuPont-3358 AUTHOR: Carol Finlay, B.A.