Telomer Industry Players Primary Manufacturers DuPont (Integrated monomer/polymer manufacture) Daikin (Polymerization of imported monomers Clariant (Import of own polymers) Asahi (Import of own polymers) Other Manufacturers Dai-nippon Ink (Japan manufacture, distribution in Us?)

HECYCLEO 05 AR226-2656 AR226-2656 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.

Chemours Netherlands (formerly Dupont) is situated on the outskirts of the city.

Box 50 Newark, Delaware 19714-0050 LABORATORY PROJECT ID: DuPont-13349 -- mw Company Sanitized.

DOCS NOT CONTAIN CBI March 18,2010 8EHQ-0310-16436M 89100000163 DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O.

The initial work by the contract lab will require method development for quantita tive determination of PFOA in the various article matrices and telomer-based products as well as ' The companies participating in the TRP include Asahi Glass, Clariant GmbH, Daikin Industries and E.I. duPont de Nemours & Company. " Letter of Intent for the Telomer Research Program submitted to Stephen L.

AR226-3339 Roy S Thompson Ilaria Colombo Watze de W olf (AstraZeneca, Brsxham, UK) (Solvay Solexis, Bolteie, Italy) (DuPont, Mechelen, Belgians) David G Farrar Robert A Hoke Jacques L'Haridon for:(ineos Chlor, Runcorn, UK) (DaPant, Newark, DE, USA) (CIT, Evreux, France) APME (Association ofPlastics Manmcterera in Earops) d-Hoc APFO Eavimaffisatsl Woridag Group _____________ _____ A p ME / Acute & Cfer@icCAoqunatetinctToxicity of APFO Background Physico-chemical properties of APFO Acute toxicity Chronic toxicity Risk assessment Potential role of ammonium ion in APFO toxicity Conclusions Acknowledgements AJpME 1 ArairAtucfutitielii&iitiCphtrrollniiic Arquacttic Tsio#xaitcit-yBoaf AckPgFrOtjiiiid Most commonly used salt o f perfluorooctanoic acid (PFOA) Essential processing aid in fluoropolymer and fluoroelastomer production (e.g.

71-00/-13 78s frit DuPont Haskell Laboratory AR 224-1000 FeI --00-00 32D muy 0m Gaol 000000 > He224-155 `UDrS.

DuPont Haskell LaborBaitoocrhyefmoircaHleaTlotxhicaonldogEynvironmental Sciences 10 October, 2001 S= 3582 so Es = 5 a DRAFT J Pe tario eoiessss & Gx004797 Abstract DAersfilmupclreonacnidancooantseer(vAaPtiFvOe)ceoxmppoasrutrmeesnttaolesmtoidmeatleswaosf pdeefvleuloorpoeodcttoanroelaattee (aPmFmOo)nium Cionnccleundtermateicohnasniinshiumofanphbylsoioodl.ogiTchael dmeosdcerliptwiaosnsb.asFeudrtohenr,kihneetimcopdreinlciwpaless.nobtutiintdeinddendotto tpehpylsaicoelotghiecanleededscfroirpmtioornse.roTbhuestmmooddeellisntclhutdeidnczleurdoe-omredcehranmiastthiecmiatnidcaaplprdoepsrciriaptteions of horealvaonldumienhsaloaftdiaoinliynwpauttear ncodansfuirmspt toirdoenrealnidmaiinatbiroeanthdeedscwaeprtieoun.sedSttaonrdealradteedstaiimlatienstzokfe oufndAePraFOvalroiectoyncoefnetrxaptoisounrseocfonAdPitFiOonsinaanid aunsdeddr1i0nckrienagtewaatearb.leTrheelamtiondgeAlPwFasOeixnetrackiesveida imondkeilngprowvaitdeer danedc/iosrioain-mtaokPerFsOwibtlhooadnceoancselnytraaptpiloinesd. tToohletsoirmepllaitceitAyPaFnOd uexipotsuorfesthtios estimates of resulting PFO concentrations in human blood.

*25 AR226-1941 DuPont Haskell Laboratory for Health and Environmental Sciences Elkton Road, P.0.

Larsen DuPont Science and Engineering Experimental Station, P.O.

Stadler The DuPont Company, Haskell Laboratory for Toxicology and Industrial Medicine, Newark, Delaware, USA U Abstract Questions have arisen regarding the potential of fluoroorganic cliemicals to be absorbed and to bioaccuniulate in tlte human body.

AR226-2656 Is AR226-2656 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 oftoxicity (CAT) recommended airborne screening level of 1.0 ug/m3 at the property line fence.

Does not contain TSCA CB1 DuPont HLB 112^0 The purpose of Wl of f when oppi 1 rabbits.

A R 2 2 6 -2 0 6 8 VW SAFETY, HEALTH AND ENVIRONMENTAL C8 AMMONIUM PERFLUORO-OCTANOATE FC--1 43 ANIONIC FLUOROCHEMICAL SURFACTANT MGF by 3M COMPANY v -5 o DuPONT AEL: 0 .01 m g /M 3 (0 .5 6 ppb, 8 hr TWA) o IRRITANT via INHALATION.