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Wildlife International.

AR226-2093 Industrial Hygiene Sample Date Range Concentration Range A ction Level 1/1IBS 100% Sample D t sam ple# D uration Type Employee Name BTO : 08 TEFLON tO C : 701 FINE POWDER DRYER-EAST SIDE #2 5/26/55 46259 7/1/85 46260 9/16/85 46261 9/22/85 46262 330 Z 345 z 360 z 330 z 1201/85 ' P eis Chemical C-a/FC-143 C-8/FC-143 C-0/FC-143 0 8 /F C -1 4 3 BTO: 06 LO C: 702 TEFLON FINE POWDER DRYER CONTROL ROOM (ALSO SEE TTF031 2/19/85 36576 300 z C-8/FC-143 3/16/85 36877 320 z C-8/FC-143 4/15/85 36578 380 z C-8/FC-143 6/1105 36606 360 z C-8/FC-143 7/4/85 36895 300 z C-8/FC-143 9/17/85 36897 360 z C-8/FC-143 BTO : 06 TEFLON LO C : 703 FINE POWDER PACKOUT ROOM 3/27/85 34490 390 z C-8/FC-143 BTO : 08 TEFLON LO C : 704 A/S - FINE POWDER 0 8 WEIGH HOOD 5/26/85 34866 330 z 8/20/85 34963 360 z C-8/FC-143 C-8/FC-143 BTO : 08 TEFLON LO C : 70S DISPERSION PACK OUT AREA 8/20/85 37361 360 z ' C-8/FC-143 BTO : 08 TEFLON LOC : 706 FINE POWDER DRYER #3 2/19/85 34221 300 z 3/27/85 34222 410 z 3/27/85 34223 420 z 4/14/85 34224 380 z Tuesday, May23,20001:34:25 PM C-8/FC-143 C-8/FG-143 C-8/FC-143 C-8/FC-143 Cone Unit Percent 1.58 MPB 0 3 6 MPB 0.137 MPB 0335 MPB 282.1% ** 643% 245% 893% 0.40 MPB 0 3 6 MPB 0.06 MPB 0.56 MPB 10.04 MPB 2397 MPB earn 643% 107% 100.0% ** 1792.9% ** 5302% ** 0.2 MPB 35.7% 5.45 MPB 1.1 MPB 973.2% ** 196.4% " 0.083 MPB 148% 0 2 8 MPB 0 1 4 MPB 0.33 MPB 0.06 MPB 80.0% 25.0% 589% 107% Pagel o f14 AJP000488 EID072894 i ,/ Sample Dt Sam ple# Duration Type Employee Name 4/15/85 34225 4/22/B5 34226 6/11/85 34245 7/3(85 34244 9/17/85 34246 9/25/85 34247 10/20/85 34248 are x 0 z 360 Z 320 Z 360 Z 330 Z 360 Z BTO : OB LO G : 700 TEFLON P/S - FINE POWDER FACKOUT (OQPJ) 6/2/85 9397 300 P 6/26/85 9366 360 P B T O : OB LO G : 709 TEFLON D R Y E R aO A T A T lO N T A N K 4/15/85 34294 350 Z BTO : 08 LOG : 712 TEFLON NORTH END OF DRYER #3 7/4/85 46317 400 Z 9/17/85 46318 390 Z BTO : 08 TEFLON LO G : 714 C-8 STORAGE ROOM 7/7/85 46093 420 Z BTO : 08 LOG : 715 TEFLON SOUTH END DRYER #2 2/11/85 45987 340 Z 4/22/85 45988 0 Z B/26/85 45069 330 Z BTO : 08 UOC: 719 TEFLON MOISTURE CHECK 7/1/85 29564 330 P 7/2/85 29563 330 P 7/5/85 29562 380 P BTO : 08 LOG: 72) TEFLON INJECTION PUMP AREA 5/26/85 39629 330 Z Tuesday, May 23.20001.-34:25 PM P eis Chemical C-8/FC-143 C-8/FC-143 ' C-8/FC-143 C-8/FC-143 C-8/FC-143 C-8/PC-143 C-8/FC-143 Cone Unit 0.12 MPB 0.18 MPB 0.88 MPB 8.77 MPB 1.711 MPB 0953 MPB 3.827 MPB Percent 21.4% 32.1% 157.1% ** 1566.1% ** 3055% ** 1103% ** 683.4% ** none C-8/PC-143 none C-8/FC-143 0.8 MPB 0 3 MPB 1429% ** 53,6% C-8/FC-143 1JS3 MPB 273.2% ** C-8/FC-143 C 8/F C -143 3.63 MPB 0.61 MPB 648.2% ** 1089% " C-8/FC-143 0.45 MPB 60.4% 08/FC -143 C-8/FC-143 C-8/FC-143 0 3 3 MPB 0.15 MPB 1855 MPB 539% 26.8% 3313% " none C-8/FC-143 none C-8/FC-143 none C-8/FC-143 0.03 MPB 0 .0 3 MPB 02 MPB 5.4% s.4% 35.7% C-S/FC-143 1.42 MPB 2S3.6% " Page 2 of 14 AJP0G0489 EID072895 Sample Dt Sample # Duration Type Employee Name Pers Chemical BTO : 08 TEFLON LO C: 728 WAX ROOM -B -16 2 - 1ST FLOOR 3/16/85 37184 315 Z BTO : 03 TEFLON LO C : 730 BLDG 1 6 2 -GENERALAREAS 6/11/85 33764 360 Z BTO: 08 LOC 7 3 1 TEFLON A /S - INSIDE F.P.

FLUogo foLH'hBtS Item 10: Monitoring - Fluoropolymers EPA Data Needs: (Draft 9-21-03) Data Need Manufacturing Releases LOI Commitment Data on releases to air, water, wastewater, landfill leachate Additional data EPA Proposal to Address Data Needs needs beyond LOI Manufacturing none Information on release of PFOA to air, water, wastewater, landfill leachate from manufacturing facilities Continued monitoring of releases Manufacturing Sites Concentration of PFOA in air, surface water, groundwater, soil, biota, wastewater, landfill leachate at manufacturing facilities Surface water, groundwater, wastewater, landfill leachate concentrations at manufacturing sites Limited biota data Modeling of PFOA in air Monitored concentrations of PFOA in air, soil, additional biota Screening level monitoring of PFOA in air to quantify concentration and extent Screening level monitoring of PFOA in biota (eg, fish and other aquatic species, plants, herbivores, avian, terrestrial species) at manufacturing facilities AR226-2341 EXP000280 - 1- EXP0QQ281 Item 10: Monitoring - Fluoropolymers EPA Data Needs: (Draft 9-21-03) Data Nee Off Site f om Manufaci itring Concentra ion of PFOA in i ir, surface wi ter, groundwa er, soil, and biota lown gradient fi om manufacti ing facilities LOI Commitment PFOA concentrations in surface water and groundwater from manufacturing sites Additional data needs beyond LOI Monitored concentrations of PFOA in air, soil, additional biota Limited biota data Modeling of air contamination EPA Proposal to Address Data Needs Monitoring of PFOA in air to quantify concentration and extent of off site contamination Additional groundwater monitoring, similar to Washington Works, to quantify PFOA in groundwater offsite contamination at additional manufacturing sites.

AR226-2367 Fi!

AR226-2641 AR226-2641 DuPont Modeling M ethodology and Results DRAFT Shimizu Site June 2003 About the Model I Industrial Source Complex Short Term 3 (ISCST3) I Sold/used globally, including in Japan http://www.phoenix-r.co.jp/products/products.htm I Input l Stack height, diameter I Flowrate, temperature I Mass of pollutant (kilogram per hour) I Local meteorological data (Shizouka 1997, 98, 99) 1 Output l Ambient air concentrations in ug/m3 I Max values and locations outside the property line Prevailing wind ai i i w i Facility Vapor reaches ground level 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 1 Dispersion parameters describe distribution of pollutant in lateral and vertical Shim izu M odeling Inputs Stack Param eters Source ID 2 3 4 Description Location Operations Beiahi. m Diameter, m Flowrate m3/hr Pre-scrubber exit for Tine powder Operates 24 hours scrubber (called *AC Scrubber* on mao) D Plant per day. 180 days per year 8 0.68 2400 Post-scrubber exit for fine powder Operates 24 hours scrubber (called `A C Scrubber* on per day. 180 days mao) D Plant per year Operates 24 hours 15 0.6 9600 E Plant: copolymer per day, 270 days D BC Scrubber plant for P F A and F E P per year 18.2 0.6 1620 M P-2 building: Operates 24 hours M P-2 scrubber copolymer type micro- per day, 200 days oowder per year 16.1 10.6 assumed 7500 / ' S7*----- ^ / (1) Given in email o f 4/17/03 from Hie etaka Hiromatsu: 600 s a mm square diameter.

AR226-2844 ttdttiiial BI O T E S T JaitmioMei, % # !

% AR226-2873 Copies to E.

r -- ------------------------------------- ---- ------- -- -- -------------------------------404 TRADE SECRET Study Title H-24768: Subchronic Toxicity 90-Day Gavage Study in Rats with One-Generation Reproduction Evaluations Volume 4 of 5 Laboratory Project ID: DuPont-5990 DuPont-5990 Test Guidelines: U.S.

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# DuPont Telomer Research Progress AR226-3326 # Clflpariy Sanitized.

AR226-3344 ) Biotransformation of the Fluorotelomer 8-2 Telomer B Alcohol Ning Wang, Patrick Folsom, Bogdan Szostek, Vladimir Capka, Barbara Larsen, William Berti, John Gannon, Robert Buck The mirades o f science 1 8-2 Telomer B Alcohol: C8F17CH2CH2OH (8-2 TBA; CAS# 678-39-7) A key raw material used in the manufacture of sales products May be a transformation product of fluorotelomerbased sales products Is it biodegradable?

AR226-3350 Biotransformation of the 14C-labeled Fluorotelomer 8-2 Telomer B Alcohol* Wang N.1.

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