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TEFLON FINE POWDER/DISPERS ION OPERATORS C-8 BLOOD SAMPLE RESULTS /(*lO C-8 in Blood (ppm) First Sample Second Sample Change 26.0 20.0 -6.0 24.0 25.0 +1.0 11.0 8.2 -2.8 9.4 7.9 -1.5 8.2 6.5 -1.7 7.0 7.7 +0.7 6.9 5.9 - 1.0 5.6 4.2 -1.4 4.4 4.9 +0.5 4.3 5.6 +1.3 3.9 3.6 -0.3 3.6 2.7 -0.9 3.5 2.1 -1.4 2.9 2.8 -0.1 2.8 2.8 0.0 CM o 2.6 2.4 2.5 1.8 -0.7 2.5 2.5 0.0 2.1 1.6 -0.5 1.6 1.5 - 0.1 1.5 1.2 -0.3 1.3 1.1 -0.2 JWR:ldr/10/19/83 Days Between Samples 363 364 391 364 363 364 337 334 365 401 364 362 363 357 365 391 336 349 288 384 366 362 000246 % Per Year Change -23 +4 -24 -16 -21 +10 -16 -27 +13 +27 -8 -25 -40 -3 0 -7 -28 0 -30 -6 -20 -15 EID079746 TEFLON FEP OPERATORS C-8 BLOOD SAMPLE RESULTS C-8 in Blood (ppm) First Sample Second Sample Change 7.5 6.6 -.9 4.5 3.7 -.8 3.1 2.8 -.3 2.1 1.5 - .6 1.8 1.1 -.7 1.8 1.6 -.2 1.6 1.4 -.2 1.25 1.20 -.05 1.20 1.00 -.2 0.95 0.79 -.16 0.86 0.75 -.11 0.75 0.72 -.03 0.52 0.44 -.08 0.51 0.42 0.41 0.48 0.39 0.46 -.03 -.03 + .05 0.38 0.36 -.02 Days Between Samples 362 380 384 364 364 392 393 171 333 391 565 364 365 337 445 363 363 % Per Year Change -12 -17 -9 -29 -39 -10 -12 -9 -18 -7 -8 -4 -15 -6 -6 +12 -5 JWR:ldr/10/19/83 V 00024V EID079747 SHORT SERVICE OPERATORS C-8 BLOOD SAMPLE RESULTS Fine Powder Last Sample PPM .02 .19 .93 4.00 Days in Job 61 212 375 603 PPM Per Year Change + .09 +.24 + .03 -.18 FEP .05 .05 .15 .23 .66 o U1 95 124 135 165 492 266 + .15 + .10 +.38 + .09 + .24 -.24 JWR:ldr 10/19/83 00248 EID079748 NEW HIRES - TEFLON Date of First Sample 07/28/81 10/01/81 10/07/81 10/13/81 Date Hired 07/27/81 08/03/81 04/20/81 04/20/81 C-8 Blood Level (ppm) <0.007 0.009 0.007 0.015 Months on Plant Before First C-8 Blood Test 0 2 5 1/2 5 3/4 AJP002380 JWR: Idr 10/19/83 000ZA9 EID079749

Precise Research.

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/dR226- ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: Perfluorooctanesulfonylamido(ethyl)acetate; may also be referred to as PFOSAA, FC-128 or as the major component of FC-127, FC-129, FC-109, orFC-109-X.

SRPT T-629-.8, T-6889.1, T-6316.4 DT15-A M S & b -lb itf 3M M E D IC A L DEPARTMENT, CORPORATE TOXICOLOGY Title: Inter-Species Comparison of Mechanisms Fluorochemical Toxicity following Intraperitoneal dosing of perfluorooctanesulfonate (PFOS, T-6295) or ammonium perfl^iorooctanoate (APFO, T-6889) in Rats and Guinea Pigs and oral dosing of N-ethyl perfluorooctanesulfonamido ethanol (N-EtFOSE, T-6316) in Rats.

AJP003728 rrH* OQHW BEST COPY AVAILABLE COMPUTATION SHEET USE STANDARDS FOR MINIM UM ESSENTIA!.

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AR226-2152 4oO3 t *T--I Ph P S) t o> Ph RP026176 EXD476984 # Steve Swearingen Cathie Barton, DuET Debbie Mulrooney, DuET Tim Bingman, CRG w ow <Ti v] -0 EXD476985 Chronic Off-Site g ii I Purpose: Identify the design parameters required so that the average daily concentration off-site is below the CEG and on-site is less than the AEL - Emission rate - Stack Height - Stack Height/building height ratio - Dilution Air flow Model used: Industrial Source Complex (ISC v.3); a model used by EPA for air toxics permitting Results shown are using RDU meteorology data; FAY data available this week; model results will be updated.

AR226-2240 Vapor Scavenging Coefficient Estimation Vapor scavenging coefficients are used to estimate the rate of removal of a soluble species that exists below the cloud line based on rain event characteristics, such as intensity and droplet size.

S O HEM S AR226-2469 -o ; 8/7, DuPont Washinspim Worts P. 0.

AR226-2701 AR226-2701 TORONTO WORKSHOP MATERIALS September 13-14,2004 Measuring Physical Chemical Properties & Analytical M ary A.