DuPont w ill subm it a summary o f the results when they become available.

Box 50 Newark, DE 19714-0050 S*"1iltte*-" Coi.tOP^ DuPont-15261 Authors ^ u^ <^.

Study Director: Staff Toxicologist Applicant / Sponsor: DuPont Representative Date Company Sanitized.

DuPont Specialty Chemicals E.

MAR-12-2002 10:02 M .IZ 6 _ to 7 & TM 2 REGION mUN- IOT1FE6FD5I0CSATErPAcOhhToFESnCSterO-eEe2MNt1VM5P/Ih8URi1lNO4a-dIN5Ce1MlAp0E0hTiNIaO,TFPNAaeSxLn-AnP2sNRy1Dl5Ov/a8TGn1EO4iaC-V5T11EI09RO21N0N3MA-2EG0N2E9TNCREYLATIONS EPA Environmental News Contact: Roy Seneca M(2a1r5c)h81124,-25050627 EPA reaches consent agreement with DuPont on plan to supply drinking water tcsshuhoeronrwscoeounhmntPidgpaHihagnnIrlgeLeyeivAttmesoDleWspnErotoaLfwsvAhPiidiHtmnhegImEaAton.on-1na.WilTutDemhorunerpPkaUosteenr.fSftadl.ducrEieionlrniNktovyioenimrncgoteaonwanumraorPsteaeantSrertckas(ClueoPrporspr.bCol(uyt8Der)tgcu,o,tPaiWronoenns.uitAdnV),regaewne.gtnhisufcilicywanhtheacwadtoesomcrfuosimlnnudatpuarlpnmiezliqiteieiunedsiasranet. pCari8rocewemasissCsetses8isoahtnthastr.shobeuegWehnadsuihsreiencdgttsdoininsccWehatohrrgekes1s9ftao5c0tishlibetyyO.

DuPont Specialty Chemicals E.

DuPont Specialty Chemicals E.

AR 226 _ 1194 Document 10 of 20 ` COMPILATION OF HISTORICAL C-8 DATA DUPONT WASHINGTON WORKS MAIN PLANT AND LANDFILLS : am } CONTAIN NC CRI 000492 EID168057 * JABLEOFGONTENTS ~~ 11.21 DC-O8CHUiMStEONriOcaTlGLAaIbZOATOatNO.r.y.A.R.A.I.S.S.I....oer rvec neoere1-11-1 13 PhysicochemicalDataforAmmoniumPer{luorooctanoate (C-8)............1-2 14 RERCTCNCES.rr " emma 20 Washinglon WOrkS Main PION... 21 Introduction.d......

AR226-2808 DuPont-11561 TRADE SECRET Study Title H-24750: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Laboratory Project ID: DuPont-11561 Author: Carol Finlay, B.A.

Kaiser ACS DuPont Presentations Tracking Document Page 1 of 1

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.

AR226-2241 ^ Debbie J Mulrooney 01/07/2002 01:14 PM To: cc: Subject: Robert F Pinchot/DEV/AE/DuPont@DuPont Modeling Results Rob, Here are the contour plots and maximum concentrations from the straight dispersion runs (no deposition or depletion) for both 2000 actual and permitted emissions.

AR226-2241 /f* Debbie J Mulrooney 01/07/2002 01:14 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Subject: Modeling Results Rob, Here are the contour plots and maxim um concentrations from the straight dispersion runs (no deposition or depletion) for both 2 000 actual and permitted emissions.

AR226-2190 ^ Debbie J Mulrooney 08/27/2001 02:32 PM To: cc: Subject: Robert FPinchot/DEV/AE/DuPont@DuPont 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.

To: Debbie J Mulrooney/AE/DuPont@DuPont cc: Subject: Revised Data for Stacks Debbie, !