AR226-1910 Ongoing PFOA Worker Study Ammonium Perfluorooctonoate: Cross-Sectional Surveillance of Clinical Measures of General Health Status Related to a Serum Biomarker of Exposure and Retrospective Cohort Analyses in a Polymer Production Plant 1 What...

EXHIBIT 1 Table A.

3 February 2004 AR226-1938 To: Mary F.

AR226-2034 CHAPMAGA 0 1 /0 9 /9 8 0 9 :4 2 AM To: MATTSORR cc: OFFENB JL PINCHORF , P LA YTIS, ZIPFEL Su b ject C -8 Exposure on B*16 2 Roof Bob One issue that came up in the C-8 PACE team meeting yesterday was the follow up on Jennifer Nichols* C-8 study.

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.

AR226-2246 Robert F Pinchot 01/15/2002 03:27 PM ' To: Bernard J Reilly/AE/DuPont@DuPont ccz Subject: Model Results- Privileged Communication See attached fo r the m odeling results for the cistern locations.

AR226-2272 r~ .1...

AR226-2287 g> R o b e rt L R itc h e y r 05/23/200211:24 AM POO i To: M.

AR226-2333 GAB0O0373 Source 1D '1 2 3, 4 Description Pre-scrubber exit for fine powder scrubber (called "AC Scrubber" on map) Post-scrubber exit for fine powder scrubber (called "AC Scrubber" on map) DBC Scrubber MP-2 scrubber Location Contribution, Height, m ug/m3 Contribution, % D Plant 8 7.002 50 D Plant 15 E Plant; copolymer plant for PFA and FEP MP-2 building: copolymer type micro- 18.2 16.1 3.345 2.953 0.771 total = 14.071 24 21 5 w H O tHr \ source parameters 5-1-03.xls Contribution ?

AR226-2343 ATTACHMENT 1 YEAR 2002 AIR DISPERSION MODELING ANALYSIS OF APFO EMISSIONS DuPont W ashington W orks Facility Parkersburg, W est Virginia Prepared by: DuPont Engineering Technology (DuET) Environmental Section Wilmington, DE 19898 October 17,2003 ASH027176 EXP015741 .

Example calculation of chemical loading and groundwater response.

AR226-2432 mw|Wiv T"i ~r f ZIPFEL 08/06/93 08;1g AM To: RAM SEY, EICHSTTL cc: PLAYTIS , KENNEDY A T A1 A T H S K V A X , RITCHERL AT 1SCDCVM2 , ALLENJB A T A1 A T WMVX , STEWART Subject: C-8 in site drinking water The attached communication puts some perspective on the recent results of C-8 in our site's drinking water.

AR226-2586 sjisjcx ir PW5 3iJcs M jr 4* *c4vcj } goa IqcwIka; AOcJ 4o C<*4TM- vSC 61^ fe e v e h o r - k r Am *p fte4tar SoiMp^**?

RECYCLED f J J PO AR226-2699 AR226-2699 Final Report Study Title (14C)-8-2 Telomer B Alcohol: Adsorption/Desorption using a Batch Equilibrium Method Data Requirement Protocol designed to meet the known requirements of OECD Guideline 106 (January 2000) Author S Swales Sponsor Katie Smythe, Administrator Telomer Research Program The Rand Corporation 1200 South Hayes Street Arlington, VA 22202 USA Test Facility Covance Laboratories Ltd Otley Road, Harrogate North Yorkshire HG3 1PY ENGLAND Covance Study Number 2304/001 Covance Report Number 2304/001-D2149 Report Issued 16 July 2004 Page Number 1 of 89 Covance Study Number 2304/001 Final Report STATEM ENT OF NO DATA CONFIDENTIALITY CLAIM S (14C )-8-2 T elom er B A lcohol: A d sorption/D esorption using a B atch E quilibrium M ethod No claim o f confidentiality is made for any information contained in this study on the basis o f its falling within the scope o f FIFRA Sections 10(d)(1)(A), (B) or (C).

Itfff Accepted number Study number S03-4114 14114 M M - *717 05 JUN 20 AH II: 5U FINAL REPORT ' ''i j Biodegradation study of ( cbi ) by microorganisms 63050000034/S 3 CI 00 tCC-==o>> or 'O rn ro -a c x Xe* en co September 18,2003 Kuiume Laboratory Chemicals Evaluation and Resear ch Institute, Japan Company Sanitized omom. ^^ 3 itiiiM ir STATEMENT 14114 Kururne Laboratoiy Chemicals Evaluation and Research Institute, Japan Sponsor DAIKIN INDUSTRIES, LID Title Biodgradation study of ( CBi ) by microoiganisms Study number 14114 I, the undersigned, hereby declare that this report provides a correct English translation of the Final Report (Study No 14114, issued on September 18, 2003, amended on October 10, 2003), Date Study Director D e c e m b e r -4 / ^ Yasuko Matsunobu 3 ooooo* 14114 GLP STATEMENT Kuiume Laboratory Chemicals Evaluation and Research Institute, Japan Sponsor DAKIN INDUSTRIES, LTD Title Biodegradation study of ( cbi ) by microorganisms Study number 14114 This study was performed in compliance with "OECD Piinciples of Good Laboratory Practice" (November 26,1997) This final report reflects the raw data accurately and it has been confirmed that the test data are validity Date Study Director September 18,2003 Signed in original Yasuko Matsunobu 000003 O QOOOg - 14114 GLP STATEMENT Kurume Laboratoiy Chemicals Evaluation and Research Institute, Japan Sponsor DAIKIN INDUSTRIES, LTD.