STUDY TITLE Extraction of Potassium Perfluorooctanesulfonate from Mallard Serum and Mallard Liver for Analysis Using HPLC-Electrospray/Mass Spectrometry DATA REQUIREMENTS Analytical Method Requirements STUDY DIRECTOR Sean Gallagher STUDY COMPLETED ON September 06,2001 PERFORMING LABORATORY / TESTING FACILITY Centre Analytical Laboratories, Inc.

r_e * -o ia + a *jf, j/ u & /* - M4 rhT) DuPont Haskell Laboratory q,e * f - ( - 3 9 u% for Health and Environmental Sciences Elkton Road, P.0.

3M Specialty Materials 2005M 25 PH 3* 11 3M Center St.

AR226EDD0074384 CO CM Current Permit/Application/PDF #_________ 1823A 815D 815D 1353A Pre-Existing 614A 614A 781 1953 2365A Note: For some vents the surfactant rate la less than the total particulate reported in Air Emissions Inventory which can include polymer dust.

AR226-2223 f Mary A K a i s e r __________________ 12/04/2001 03:03 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Barbara S Larsen/AE/DuPont, Daryl P Cobranchi/AE/DuPont@DuPont Subject: Re: Mulit Media Consent Order APFO data requirements O Barbara Larsen, Daryl Cobranchi and I designed an experiment to get headspace concentrations (see your note below).

AR226-2312 Charles J Zarzecki ' 03/13/2003 03:48 PM To: Catherine A Barton/AE/DuPont cc: Subject: Fayetteville Results Cathie, I ran all 5 years ('95 - '99) for Fayetteville using the updated information.

AR226-2442 BRANDERA AT A1 AT EU0IS2 03/24/97 10:55 AM To: PECKSR AT A1 AT WWPS , ZIPFEL AT A l AT WWPS cc: PIRRONL AT A1 A T EUOIS2 .

AR226-2508 W ASHING TO N W O RKS - PER M IT W V 0001279 O CTOBER AND NOVEM BER 2001 FC -143 RESULTS (Letter, R .

AR226-2534 UNITED STATES NVIK0M-1ENTM.

'^ AR226-2567 ) INTER OFFICE ' -.... " I"ltnm~~ MEMO To; , F rom : Mr.

RECYCLED W CO AR226-2649 AR226-2649 ISC Modeling Methodology and Results Emission Source Information The ISC3 model was used to calculate ambient ground-level air concentrations and deposition rates for year 2000 actual C8 emissions from the Washington Works site.

AR226-2651 41 AR226-2651 Verification Study for Air Dispersion Modeling at Fenceline Draft Plan October 2003 Table of Contents I.

AR226-2653 AR226-2653 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 Permit Application 1823C for the Thermal Converter complies with the C-8 assessment of toxicity (CAT) recommended airborne screening level o f 1.0 ug/m3 at the property line fence.

HECYCLEO Ol Ol AR226-2665 en RESEARCH Precise Research.

AR226-2695 AR226-2695 Biodegradability of Telomer-Based Polymeric Products 1.