ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES N-ETHYL AMIDE BACK TO COMPOUNDS S TU D Y TITLE LABORATORY OR AUTHOR DATE COMPLETED TYPE Environmental Fate and Transport The 18-Day A erobic Biodegradation Study of P erfluorooctanesulfonyl-B ased C hem istries Pace Analytical Services, Inc. 2/20/01 R obust sum m ary, final report

BACK TO MAIN Centre Analytical Laboratories, Inc. 3048 Research Drive State College, PA 16801 www.centrelab.com ^P h on e : (814) 231 -8032 Fax: (814) 231 -1253 or (814) 231 -1580 Analytical Report Fluorochemical Characterization of Sediment, POTW Sludge, and Landfill Leachate Samples Columbus, GA (W2336) Centre Analytical Laboratory Report No. 023-014U (Revision 1) Revision Date 3/28/01 Testing Laboratory Centre Analytical Laboratory, Inc. 3048 Research Drive State College, PA 16801 3M Environm ental Laboratory Contact Kent R.

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AR226-2327 A ir Em issions M odeling Plan A ir dispersion modeling will be performed to calculate ambient ground-level air concentrations o f C8 emissions from the Chambers Works site.

RECYCLED "I AR226-2630 00 AR226-2630 DuPont Modeling Methodology and Results Dordrecht Site June 2003 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 I Input I Stack height, diameter i Flowrate, temperature I Mass of pollutant (mass per time) i Local meteorological data (Rotterdam, 1996 - 2000) 1 Output l Ambient air concentrations in ug/m3 I Max values and locations outside the property line Prevailing wind Facility Ambient annual ground level concentration in ug/m3 Model Calculations I Ambient air concentrations based on Gaussian Equation I Concentration a function of a vertical term and a dispersion term I Vertical term based on stack height, receptor elevation, plume rise, mixing I Dispersion parameters describe distribution of pollutant in lateral and vertical Dordrecht M odeling Inputs Stack Param eters PTFE S t a c k H eight (m) 20.95 S ta c k Diam.

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