Toxicological Summary PFOS Dietary Acute Mallard Study Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS# 2795-39-3 Remarks: The test substance is a white powder (3M lot #217).

EPL EXPERIM ENTA L PA THO LO G Y LA BO RATOR IES, INC.

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/)RX-OM58 fii* /TU'1 ,* < V Extent and Route of Excretion of Total Carbon-14 in Pregnant Rats 14 After a Single Oral Dose of Ammonium C-Perfluorooctanoate June 30, 1983 Conducted At: During: Conducted by: Riker Laboratories, Inc.

ACUTE TOXICITY TO FISH AR336-0 W TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC116, FC-126, FC-169, orFC-143.

^ 036-0537 TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) TEST SUBSTANCE Identity: Perfluorooctylsulfonate, didecyldimethylammonium salt; may also be referred to as Fluoroalkyl ammonium derivative. [1Decaminium, N-decyl-N,N-dimethyl-, salt with 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-1octanesulfonic acid (1:1), CAS # 251099-16-8] Remarks: The 3M production lot number was Lot 1.

amr r i 63050000008/S Monitoring and Reduction Efforts in Decatur, AL Daikin America November 8, 2004 Outline of Presentation Overall site objectives Waste Water and Sludge - Monitoring Results - Reduction Project to Reduce PFOA in Waste W ater Surface Runoff Monitoring Results Soil and Groundwater Monitoring Results Reduction of PFOA from Vaporizer Summary of Overall Site Reduction Overall Site Objectives Identify the major sources of PFOA through screening level monitoring - Daikin - Other/ Implement measures to reduce PFOA releases to the environment as soon as possible Waste Water Monitoring Waste W ater to Tennessee River (NPDES Permit AL0064351,DSN 001) Date 7/13/2003 9/25/2003 11/11/2003 12/10/2003 1/6/2004 2/23/2004 3/8/2004 4/12/2004 5/11/2004 6/2/2004 7/13/2004 8/5/2004 9/16/2004 10/7/2004 Sample 677 Duplicate Average' 700 689 Field Blank Units 1.11 ng/mL or ppb 1010 997 1004 ng/mL or ppb 1130 1100 1115 ng/mL or ppb 599 599 0.282 ng/mL or ppb 1260 1310 1285 1.8 ng/mL or ppb 546 546 ng/mL or ppb 761 874 818 ng/mL or ppb 1960 2030 1995 ng/mL or ppb 1610 1630 1620 ng/mL or ppb 1520 1520 ng/mL or ppb 901 901 ng/mL or ppb 426 424 425 ng/mL or ppb 1450 852 1540 851 1495 852 ng/mL or ppb ng/mL or ppb Type 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite Exygen Report# L34865 L35195 L0001297 L0001445 L0001562 L0002120 L0002044 L2328 L2477 L0002651 L0003031 L0003076 L0003412 L0003561 Sludge Monitoring Results Sludge from Utility (Sent to Subtitle D Landfill Permit # 40-08 by ADEM) Date 9/25/2003 12/10/2003 3/8/2004 5/11/2004 8/5/2004 10/7/2004 Sample 9.4 29.1 6.43 10.40 2.55 3.97 Duplicate 9.3 28.3 6.36 10.70 2.31 4.04 Average 9.3 28.7 6.4 10.6 2.4 4.0 % Solids 46.94 48.73 55.65 54.32 49.46 56.15 Units ug/g or ppm ug/g or ppm ug/g or ppm ug/g or ppm ug/g or ppm ug/g or ppm Type 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite 24 hr Composite Reported on Dry Weight Basis Exygen Report # L35195 L0001445 L0002044 L2477 L0003076 L0003561 Telomer Finishing Facility Waste W ater from Telomer Finishing Facility to POTW (SID Permit IU 0852 00384, DSN 006) Date Sample Duplicate Average Field Blank Units 7/15/2003 153 163 158 ND ng/mL or ppb 12/11/2003 67 63 65 ng/mL or ppb 3/26/2004 15.7 15.7 ng/mL or ppb 5/12/2004 47.9 46 46.9 ng/mL or ppb 8/4/2004 54.4 54.4 ng/mL or ppb Type Grab from tank Grab from tank Grab from tank Grab from tank Grab from tank Exygen Report # L34865 L0001445 L2328 L0002651 L0003076 Project to Reduce PFOA in Waste Water PFOA Reduction Waste Water Stream PFOA Reduction Waste Water Stream PFOA Reduction Waste Water Stream Project Schedule: - Installation Complete: - Start-up/Commissioning - Normal Operation: July 04 Aug-Nov 04 Dec 04 Project Status: - Capital Cost: - Initial results shows well. - System nearing turnover to Operations.

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POLYMER PRODUCTS DEPARTMENT MANUFACTURING DIVISION AR226-2008 TO: J.

AR226-2113 Industrial Hygiene Sample Date Range Concentration Range Action Level 1/1/86 100% 12X31/86 Sample Dt Sam ple# Duration Type Employee Name B T O : OS TEFLON LO C : 7D1 FINE PO W DER DRYER-EAST SID E #2 3/5/86 46263 950 Z 6/486 43264 360 z earns 46265 330 z 8/8/86 46273 390 z 8/5/88 40272 390 z 8/10/86 46271 360 z 8/116 46270 390 z 8/12/86 46269 350 z 8/13/86 46268 390 z 8/16/86 46267 390 z 8/25/86 46266 330 z 9/12/86 46275 360 z 9/15/86 46274 360 z 11/9/86 46276 330 z 11/22/86 46277 375 z Pere Chemical C-S/FC-143 C-S/FC-143 C-8/FC-143 C-8/FC-143 C-S/FC-143 C-S/FC-143 C-S/FC-143 C-S/FC-143 C-S/FC-143 C-S/FC-143 C-8/FC-143 C-S/FC-143 C-S/FC-143 C-S/FC-143 C-S/FC-143 BTO: 03 TEFLON LOG: 702 FINE POWDER DRYER CONTROL ROOM (ALSO SEE TTFC1 8/12/86 36601 350 z C-S/FC-143 8/13/86 36600 390 z C-S/FC-143 8/16/86 36599 390 z C-S/FC-143 10/24/86 36602 300 z C-S/FC-143 11/13/86 36604 255 z C-S/FC-143 BTO: 08 TEFLON LOG: 703 FINE POWDER PACKOUT ROOM 2/26/86 34534 390 z 5/21/85 3453?

________________________________________________Name_____________________________________ Thompson Collins Watkins Smith Coneentratlons are from the deposition modeling runs, and Include wet and dry depletion due to deposition I AR226-2245 EDD0079976 C o o rd in a te s Particulate Deposition (g /m 3/ y r ) Vapor Deposition (q /m V ) Total Deposition (q /m V ) 445213E 4346090N 443141E 4345753N 443223E 4345847N 443254E 4345888N 0.00098 0.00179 0.00193 0.00186 0.00008 0.00021 0.00019 0.00018 0.00106 0.00200 0.00212 0.00204 i Particulate Concentration (uq/m' i Vapor Concentration (u g /m 3) Total Concentration (ug/m3) 0.02000 0.03217 0.05217 0.03752 0.05854 0.09606 0.03665 0.05695 0.09360 0.03554 0.05587 0.09141 EDD0079977

AR226-2361 September 2002 Throdgb August 2003 A ir Dispersion Modeling Analysis o f APFO Emissions (Revised) May 24,2004 Page 1 of 9 SEPTEMBER 2002 THROUGH AUGUST 2003 AIR DISPERSION MODELING ANALYSIS OF APFO EMISSIONS -------------------------------------- (Revised)-------------------------------- -- -- DuPont Washington Works Facility Parkersburg, West Virginia Prepared for: West Virginia Department of Environmental Protection Division o f Air Quality 7012 MacCorkle Ave, SE Charleston, WV 25304-2943 Prepared by: DuPont Engineering Technology (DuET) Environmental Section Wilmington, DE 19898 C:\c8\c8_0803_report_revised May 24,2004 I E ID 775177 EID 775177 September 2002 Through August 2003 Air Dispersion Modeling Analysis o f APFO Emissions (Revised) May 24,2004 Page 2 o f9 1.

AR226-2423 ATMOSPHERIC MODELING SJjJQIES WASHINGTON WORKS NEAREST LUBECK NEIGHBOR ANNUAL EXPOSURE IS CA. 0.03 UG/M3 <10% CEG) ASSUMING 85% UTILITY/90% EFFICIENCY OF FINE POWDER DRIER SCRUBBER.

0000428.txt AR226-2451 June 24, 1998 Details of FC-143 Sample Data From CH2M Hill Available To-Date: Location Date Site Sampled Site Location Result ug/L Dry Run Landfill it n ir it it if if 5/19/98 II It If It Stream I Stream II 001 Outlet Leachate FBLK21 1 .0 4.6 17 56 0 .1 LeIVtart Landfill If II 11 II If If n 5/28II/98 11 It II II II II It Lower Pond Upper Pond WWKLTLMW6 WWKLTLMW2A WWKLTLMW7 WWKLTLMWl WWKLTLMW8 Trip Blank FBLK02 1100 480 30 990 260 24000 2700 0.1 0.1 Local Landfill IV If II 11 6/2/98 n 19 IV it Outlet 101 Stream 2 Outfall 004 Outfall 005 FBLK05 54 15 12 39 0.1 Plant Site IV West WellFld 16 RJZ011501 Page 1 EID086144 ~0000428.txt 16058 (vlw) RJZ011502 Page 2 EID086145

AR226-2627 15 AR226-2627 RESULTS OF C8 SAHPLBS FROM Dgl jg3 -GROUND RATER SAMPLES ON THE SITE, OffT-Joag -ao/Ss Sample point C8 ia ppb 93 A B 96 A B C D 98 A B C 0.2 Remark; There is a project for ground 1.0 water treatment to reduce 0.7 several chemicals which are N.D. identified.