Final Report 28-Day Repeated Dermal Contact Study of 3M Test Articles in Sprague-Dawley Rats Fraunhofer ITEM - Study No.: 01G 00 0 02 Original ... of 2 Test Facility: Fraunhofer Institute of Toxicology and Experimental Medicine [Fraunhofer ITEM] Nikolai-Fuchs-Str. 1 30625 Hannover Germany Director: Prof.

A R ^ - o s ii MICROTOX TOXICITY TEST TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, FC116, FC-126, FC-169, orFC-143.

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Telom er Research Program AR226-1890 Report Title: (14C)-8-2 Telomer B Alcohol: Adsorption/Desorption using a Batch Equilibrium Method Report Author: Sharon Swales, Ph.D., Covance Laboratories Contractor: Covance Laboratories Ltd Otley Road, Harrogate North Yorkshire HG3 1PY ENGLAND RECEIVED OPPT NCIC 2004 DEC 22 AM 11:20 Study Dates: Study Initiation Date (Protocol Signed): 13-March-2003 Study Completion Date (Final Report Issued): 16-July 2004 Study Objective The adsorption/desorption characteristics of (14C)-8-2 TBA were examined in four soil types and one sediment.

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AR226-2084 1 DPotFuwroprooucts WPPAOARSK0H0SmXS1eU2rto1WH7iW, VoWn26102*1217 cc: Doug Anton KenLau Chris Gueris Sara Joslin .

AR226-2107 Industrial H ygiene Sample Date Range Concentration Range Action Level 1/1/80 100% 12/31/80 Sample Ot Sample# Duration Type Employee Name BTO: 07 TECHNICAL LQC: <406 TFE-FEP-MELT INDEXER-ON BENCH 10/23/80 57333 Z 10/28/80 57334 z 10/31/80 57335 z Rers Chemical 06 C-8 08 BTO 5 OB TEFLON LOC: 701 FINE POWDER DRYER-EAST SIDE#2 12/31/80 62678 z C-8 BTO: 03 TEFLON LOC: 702 FINE POWDER DRYER CONTROL ROOM (ALSO SEE TTF031 7/0/80 57143 z 08 7/14/80 57144 z C-8 7/16/80 57145 z 08 8/28/BO 57146 z C-8 BTO: 06 TEFLON LOC: 703 FINE POWDER PACKOUT ROOM 12/31/80 48505 z 08 BTO: 08 TEFLON LOC: 704 A/S-FINE POWDER C-8 WEIGH HOOD 12/31/80 51173 z 08 BTO : 08 TEFLON LOC: 705 DISPERSION PACKOUT AREA 1/16/80 60378 z 1/17/80 60379 z 3/31/80 60380 z C-8 08 C8 BTO: 08 TEFLON LOC : 70S FINE POWDER DRYER #3 1/30/80 48580 z 4/29/80 48501 z Tuesday, Januaty 16,2001 1237:15 pm 08 C-8 Cone Unit Percent <0.0001 PPM 0.0011 PPM 0.0008 PPM 00% 00% oo% 0.0073 PPM 00% 0.0009 PPM 0.0022 PPM 0.0001 PPM <0.0001 PPM 0.0% 0.0% 0.0% 0.0% <0.0001 PPM 0.0% 0.0004 PPM 0.0% 0C017 PPM 0.0002 PPM <0.0001 PPM 0.0% 0.0% 0.0% 0.0065 PPM 0.029 PPM 0.0% 0.0% Page 1 o f9 AJP004099 EID113234 sample Dt sam ple # Duration Type Employee Nane 409/80 46582 7/14/80 48583 7/23/80 48934 7/23/80 48585 7/29/80 46568 7/29/80 48587 Z Z z z z z BTO : 08 TEFLON LOO: 707 FINE POWDER DRYER #2 4/17/80 60141 4/17/80 60142 Z z BTO i 08 TEFLON LOC: 708 P/S- FINE POWDER PACKOUT (08PJ) 1/16/80 40587 Z BTO ; OB TEFLON LOC: 710 FP&D AUTOCLAVE CONTROL ROOM 1/26/80 62587 2/11/80 62588 2/26/80 62589 6/26/80 62990 7/14/80 62591 7/16/80 62502 7/31/80 62593 7/31/80 62594 8/4/80 62995 8/25/80 62596 Z z z z z z z z z z BTO: 08 TEFLON LOC: 712 NORTH END OF DRYER3 1/7/80 62831 Z 1/9/80 62832 z 1/25/80 62833 z 1/29/80 62834 z 2/7/80 62835 z 2/26/80 62836 z 3/6/80 62837 z 3/18/80 62838 z 6/12/80 62839 z Tuesday, January 16,2001 12:37:15 PM Pera Chem ical 06 C8 C-8 e-8 C-8 C-8 Cone Unit Percent 0.005 PPM 0.0095 PPM . 0.0039 PPM 0.0009 PPM 0/3066 PPM 0.0051 PPM 0.0% 0.0% 0.0% 0.0% 08% 0.0% 08 0.0051 PPM 0.0% C-8 0.0035 PPM 0.0% C-8 0.0006 PPM 0.0% 08 0.0012 PPM 0.0% C8 0.0008 PPM 0.0% C8 0.0004 PPM 0.0% C-8 0.001 PPM 0.0% 08 0.0024 PPM 0.0% C8 <0.0001 PPM 0.0% C8 0.0005 PPM 08% C8 0.0009 PPM 08% C8 0,0026 PPM 0.0% 08 0.0001 PPM 0.0% C8 0.0023 PPM 08% C8 0.0021 PPM 08% 08 0.0007 PPM 0.0% 08 O.0QO7 PPM 0.0% 08 0.0016 PPM 08% 08 0.0005 PPM 0.0% 08 0.0005 PPM 0.0% 08 0.0034 PPM 0.0% 08 <0.0001 PPM 0.0% P a g e 2 o f9 AJP004100 D 1 1 3 2 3 5 Sample Dt Sample# Duration Type Employee Name 7/9/80 62840 8/28/80 62841 Z Z BTO : 08 TEFLON LOC: 713 FINE POWDER OFFICE AREA-GENERAL 1/23/80 62620 Z 1/23/80 62621 2/11/80 62622 2/11/80 62623 2/26/80 62624 7/10/80 62625 Z z z z z BTO: OB TEFLON LOC: 715 SOUTH END DRYER #2 1/23/80 62530 z 7/9/80 62531 z 8/28/60 62532 z BTO: 08 TEFLON LOC: 716 FINE POWDER C-8 PUMP AREA 6/11/80 62630 z 7/10/80 62631 z 7/10/80 62632 z 7/16/80 62633 z 7/16/80 62634 z 7/17/80 6263S z 7/17/80 62636 z 7/22/80 62637 z 8/26/80 62638 z 8/26/80 62639 z 8/26/80 62640 z BTO : 08 TEFLON LOC: 717 ROOF AREA-GENERAL 1/18/80 62601 z 1/18/80 62602 z 1/10/80 62603 z BTO: OB TEFLON LOC: 718 FINE POWDER DRYER AREA Tuesday.

AR226-2148 SSG EID942803 RJZ027542

AR226-2146 ATMOSPHERIC MODELING STUDIES WASHINGTON WORKS NEAREST LUBECK NEIGHBOR ANNUAL EXPOSURE IS CA. 0.03 UG/M3 (10% CEG) ASSUMING 85% UTILXTY/90% EFFICIENCY OF FINE POWDER DRIER SCRUBBER.

AR226-2193 Oscar T Garza ' 08/28/2001 07:44 AM To: TarWei Fu/SE/DuPont@DuPont cc: Stephen J Gissy/AE/DuPont@ DuPont, Fred M Lentz/SE/DuPont@ DuPont, Robbin Banerjee/AE/DuPont@DuPont, Paul K Mathur/CL/DuPont@DuPont, David M Rurak/AE/DuPont@ DuPont, Raymond C Butterworth/CL/DuPont@DuPont, John R Flynn/AE/DuPont@DuPont, Amy L Brown/AE/DuPont@DuPont, Thomas W Mahlberg/SE/DuPont@ DuPont, Robert F PInchot/DEV/AE/DuPont@ DuPont, Chris E Shoop/AE/DuPont@DuPont, Roger J Zipfel/AE/DuPont@DuPont, Alvin H Gibson_Jr/CL/DuPont@DuPont, Debbie J Mulrooney/AE/DuPont@DuPont Subject: Re: A C TIO N IT E M S FR O M A P FO D IS PER SIO N M O D E LLIN G D It looks like we have to pursue the stack additions for 5 vents as an immediate issue - I think we just need to be sure the 20-30 ft is truly enough for these stacks.

AR226-2283 M ark H R u ssell 05/06/2002 11:20 AM To: Catherine A Barton/AE/DuPont@ DuPont cc: Subject: M odeling so il concentrations Cathy, I tried calling you but you w eren't in.