AR226-2236 Henry's Law Constant for C-8 in Water Henry's Law fo r a component in water is a useful approximation of the partial pressure of that component above a specified composition in aqueous solution, in its most general form, the equation that defines Henry's Law is where /j = Pure component fugacity of component 1 Hx = Henry's Law Constant for component 1 x t = Liquid phase mole fraction of component 1 Henry's Law is fundamentally valid only as x1 -> 0 and fo r ideal solutions, but is commonly used as an approximation tool at low concentrations.

Modelinq - CAB - 5/7/03 Source ID 1 2 Description Pre-scrubber exit for fne powder scrubber (called "AC Scrubber11on map) Post-scrubber exit for fins powder scrubber (celled "AC Scrubber" on map) Location D Plant O Plant 3 DBC Scrubber 4 MP-2 scrubber E Plant; copolymer plant for PFA and FEP MP-2 building: copolymer type micro- powder Height, m 8 15 18.2 16.1 Diameter, m Flowrate m3/hr Flowrate. m3/min Temp 0.68l" 2400 40 100 c 0.6 9600 160 40-50 C 0.6 1820 27 40 C 0.6 assumed 7500 125 40 C assumed Compound C8 C8 cs C0 Emission Emission Rate, kg/br Rate, g/s 0.24 0.0667 0.24 0.0667 0.07 0.0194 0.125 0.0347 --------- . ... ........ {1) Given in email of 4/17/03 from Hldetaka Hiromatsu: 600 sq mm square dame er.

AR226-2588 "Andrew > Martien l0//1B/UU2 4:1 HW To: stvs.williams@epa.etata,oh.us cc: Bernard J Reilly/AE/DuPont@DuPoM, Laura R Walter/AE/DuPont@DuPont, M.

AR226-2627 15 AR226-2627 RESULTS OF C8 SAHPLBS FROM Dgl jg3 -GROUND RATER SAMPLES ON THE SITE, OffT-Joag -ao/Ss Sample point C8 ia ppb 93 A B 96 A B C D 98 A B C 0.2 Remark; There is a project for ground 1.0 water treatment to reduce 0.7 several chemicals which are N.D. identified.

AR226-2631 19 AR226-2631 DuPont Modeling Methodology and Results Netherlands Site September 2004 About the Model I Industrial Source Complex Short Term 3 (ISCST3) I Sold/used globally, including in The Netherlands http://www.phoenix-r.co.jp/products/products.htm 1 Input I Stack height, diameter .

AR226-2858 PERSONAL AND CONFIDENTIAL Copies to : u . .. , WE * 1' du Pon+ de Nsmours and Company H askell Laboratory fo r T oxicology and In d u s tria l M edicine HASKELL LABORATORY REPORT NO. 448-77 MR NO M a te ria ls Tested* Haste11 No. 1) 11,225 2) 11,226 Samp I es Ready For Testing 5- 6-77 L Materials Submitted bv __T e x t!

Ar RAG_ 17 o 000204 C-O-N-F-I-D-E-N-T-I-A-L Location SUMMARY ORGANIC FLUORIDES IN BLOOD SAMPLES Job Group Number Sampled Range ppm Average ppm iashincton Works Wilmington Chambers Works Chambers Works - PFD Experimental Sta.

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AR226-2655 AR226-2655 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed for the DuPont Washington Works facility to demonstrate that the emission limits included in the form R13 permits (815E, 1353B, 1953B, and 2365C) comply with the C-8 assessment o f toxicity (CAT) recommended airborne screening level of 1.0 ug/m3 at the property line fence.