To: Robert FPinchot/DEV/AE/DuPont@DuPont co: Subject: Revised Base Case Rob, Here are the results for the base case with the fine powder dispersion vent at 12,000 acfm instead of 18,000.

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

Kaiser ACS DuPont Presentations Tracking Document Page 1 of 1

AR226-2181 Chris EShoop_ 08/22/2001 12:42 PM To: Debbie J Mulrooney/AE/DuPont@DuPont i cc: Subject: Revised Data for Stacks Debbie, Please see the attached file for the data file containing revised slack heights, diameters, and velocities.

I. du Font de Nemours and Company Stine Haskell Research Center DuPont Haskell Laboratory P.O.

Q Based on the current data available, DuPont believes the following pathway does exist.

The Tennants have sued DuPont in connection with the releaseofvarious pollutants and contaminants from DuPont's Dry Run Landfill in Wood County, West Virginia.

DuPont took some, but not all, of the samples called for in the approved Work Plan.

Does not contain TSCA CB Skin Imiuiion Test with H-2I95I in Rabbity DuPont HI.R 7K2-96 B.

DuPont intends to continue to actively operate the site hydraulic control program and monitor its effectiveness going forward.

Dawson, CIH, CSP Results rounded to nearest whole number DuPont Company Changshu Works, China Serum PFOA - Group 3 May 2007 - November 2008 P-5 Worker Number 75 76 77 78 79 80 81 82 83 May 2007 Nov 2007 May 2008 Nov 2008 Results Results Results Results (PPb) (PPb) (PPb) (PPb) 583 544 12 292 298 51 1,990 42 1,141 28 503 546 14 1,020 4,160 4,916 10 2,340 2,230 724 734 848 Number of Samples Average Median Minimum Maximum Standard Deviation 61 26 1020 21 1020 10 1020 51 1020 17 Results prior to Nov 2008 previously reported 6 1435 659 292 4160 1526 9 1471 848 298 4916 1452 Samples analyzed by Shanghai Institute Materia Medica, Pudong, Shanghai, China Barbara J.

Doenot contain TSC CB| -5 - DuPont AEMR 205-95 ISOVOSI U1BIU03lousaoa _ ________________________________ TABLE 2 - CLOSED BOTTLE TEST:1 7 DAYS 14 DAYS 21 DAYS 28 DAYS % BIOPEGRADABILiTY n n W iM i msm&mmMMM DuPont AEMR 205-95 Sanitized.

P Ril --^ 474 M&06- H U DuPont-13349 TRADE SECRET Study Title H-25914: Static, Acute, 48-Hour Toxicity Screening Test with Daphnia magna A u t h o r s : Laurie D.

This would mean that the Dupont intervention would be added again.

Fan milky liquid Approximately 99.5% H-20431 None available DuPont HLR 90-94 GENERAL INFORMATION (CONT.)