SOIL ADSORPTION TEST SUBSTANCE Identity: Perfluorooctanoic acid, ammonium salt; may also be referred to as PFOA ammonium salt, Ammonium perfluorooctanoate, PFO, FC-116, FC-126, FC-169, or FC-143.

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/WU06-OS33 BIODEGRADATION 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-loctanesulfonic acid (1:1), CAS # 251099-16-8] Remarks: The 3M production lot number was Lot 1.

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A # 22 - (S 7 / Analytical Report \ Occupational and Environmental H ealth Analysis o f ^frfiuorooctanolo Add (PFOA) In Human Serum Samples \ Exygen Report No.

A226r/qo3 SRPT T-6295.8, T-6316.4, T-6868.2, T-7071.1, T-7132.1 DT15-B 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Title: Comparative Molecular Biology of Perfluorooctanesulfonate (PFOS, T-6295), N-ethyl perfluorooctanesulfonamido ethanol (N-EtFOSE, T-6316), N-Ethyl perfluorooctanesulfonamide (N-EtFOSA, T-6868), Perfluorooctanesulfonamido acetate (FOSAA, T-7071), and/or Perfluorooctanesulfonamide (FOSA, T-7132) of in Rats and Guinea Pigs following Oral dosing.

H18636: Slide Review of pancreas lesions from DuPont APFO Study Date of Review: 28thNovember 2001-11-29 Reviewing Pathologists: Dr E E McConnell and Dr J R Foster Study No: HN-18636 Study Tide: Combined Chronic Toxicity/Oncogenicity Study with Linur-on, C8 and Wyl4,643.

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AR226-1982 CC: H.

7 AR226-2028 ji*3g^^^i$g65#4i62.>*.v3vV^RS F C-8 SAMPLING PROJECT PAGE 1 OF 41 SUMMARY OF SPECIAL C-8 SAMPLING PROJECT Jennifer Nichols Environmental Lab LSE 9-16-97 ) zmzm\ BID093252 E ID 093252 C-8 SAMPLING PROJECT PAGE 2 OF 41 TABLE OP CONTENTS PAGE TITLE PAGE................. 1 TABLE OF CONTENTS.................................. 2 INTRODUCTION ........................................ 3 SUMMARY OF AIR MONITORING ............................ 4 SUMMARY OF WIPE SAMPLING ............................. 5 ATTACHMENT 1: AIR SAMPLING RESULTS.................. . 6 SUMMARY OF AIR SAMPLING PATHSFORWARD.................. 24 ATTACHMENT 2: INVESTIGATION OF HVAC UNITS............ 26 ATTACHMENT 3: SURFACE WIPE SAMPLING RESULTS.......... 30 WIPE SAMPLING CONCLUSlONS/PATHSFORWARD....... 36 FIGURE 1: ROOF HVAC SAMPLING LOCATIONS (AIR) ........... 37 FIGURE 2: ROOF SAMPLING LOCATIONS (WIPE) ............. 38 FIGURE 3: PERCENT RECOVERY OF WIPE SAMPLES .... 39 FIGURE 4: AVERAGE VALUES AT ROOF LOCATIONS........... 40 REFERENCES.......................... 41 EID093253 E ID 093253 C-8 SAMPLING PROJECT PAGE 3 OF 41 In response io the Summary of 1995 C-8 Blood Testing (Playtls, 1995) results, and subsequent 1996 Industrial Hygiene Follow-up Report (Playtls, 1996), an extensive sampling campaign for C-8 In air and on surfaces (wipe testing) was conducted In Teflon* areas.

AR226-2198 C h r is E Shoop 08/28/2001 04:10 P M ................_ .. . ...... _ _____ To: cc: Subject Stephen J Gissy/AE/DuPont@ DuPont ' Karl G Kronberg/AE/DuPont@DuPont, Robert I W evodau/SE/DuPont@ DuPont, Debbie J Mulrooney/AE/DuPont@DuPont, Robert F Pinchot/DEV/AE/DuPont@ DuPont Em issions Modeling for Permit Applications Steve, Karl, Bob, and I feel that we will need to have modeling data for the applications we plan to submit or have already submitted for FP, F EP , and PFA.

AR226- CO CM CM 815D (FP/D) 815D (FP/D) 614A(FEP1) 614A(FEP2) 1953(FEP3) 2365A (PFA) SOURCE ID 647 659 231 232 242 274 2003 Production annual lb 0 4,300,000 2,700,000 2,500,000 3,903,900 3,903,900 3,346,200 1,977,000 Fraction QPU to Dryer 0.0025 0.0035 0.0045 0.0051 0.0051 0.0051 0.0065 0.92 0.4 0.4 0.4 0,7 EMISSION EMISSION Scrubber RATE RATE E ff (lb/vr) (O/S) 0.85 4340.1 0.0625 0.93 557.5 0.0080 0.93 557.5 0.0080 0.93 477.8 0.0069 0.93 629.7 0.0091 FEP Total 11,154,000 Split Lines 1,2,&3 as 35/35/30 Line 3 QPU raised to 0.0051 per current operations EID677987

1 ' AR226-2 273 s GIST meeting notes May 15,2002 Minnies from the C-8 DuPont meeting May 15,2002 The meeting began at approximately 10:20 am.

AR226-2362 i ~J\ URS URS Diamond M o a i b> r t A g P te se A -h sh c rA M ) io A t is 'ft ^ c u tot'hU. u/U&'b k t 5 7a. erf WU) ^ AO crffi/4 ^1*0

~0027722.txt AR226-2374 In the follow-up to a finding at Dordrecht, we analyzed the No. 2 .Wat f inishing .