Sponsor: 3M St.

AR226-1898 oT9m515FR 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Low Level Oral Perfluorooctanesulfonate (PEOS) Dose Toxicokinetic Study `Serum and Liver PFOS in Rats: DateF:inAaplriRlep1o4r,t2004 Study No.

rSRiPsTaT6295, T-6889.1, T6316.4 AR226- 190 3M MEDICAL DEPARTMENT, CORPORATE TOXICOLOGY Title: Inter-Species ComparisonofMechanisms Fluorochemical Toxicity following Intraperitoneal dosing of perfluorooctanesulfonate (PFOS, T-6295) or ammonium perfluorooctanoate (APFO, T-6889) in Rats and Guinea Pigs and oral dosing of N-ethyl perfluorooctanesulfonamido ethanol (N-EtFOSE, T-6316) in Rats.

AR226-2106 Test Results Sample Date Range Concentration Range Action Level Industrial Hygiene lfl/79 1231/79 100% Sample Dt Sample?

AR226-2358 DRAFT PHASE II MONITORING/SAMPLING WORK PLAN DUPONT WASHINGTON WORKS SITE WASHINGTON, WEST VIRGINIA Date: March 2004 Project No.: 507423 18983990.04006 18983992.04006 CORPORATE REMEDIAT10N GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 EXP000387 Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Monitoring/Sampling Work Plan____ _____ ______Table Of Contents TABLE OF CONTENTS 1.0 1 Introduction....................--...............................--...,........--................--..................... 2.0 Background Information............................................................................................ 3 3.0 Air Modeling Verification Study............................................................................... 5 3.1 Phase II Air Monitoring Activity...................................................................... 5 3.1.1 Air Sampling Events, Duration and Locations.................................... 5 3.1.2 Number of Samples ............................................................................. 5 3.1.3 Sampling Equipment, Methods and Schedule..................................... 6 3.1.4 3.1.5 3.1.6 3.1.7 3.1.8 Analytical Methods..............................................................................6 Meteorological Monitoring.................................................................. 7 Meteorological Data..........................--............................................... 7 Model Selection and Methodology...................................................... 8 Receptor Selection.........--................................................................... 8 3.2 Progress Reports and Results --.........................................................................8 4.0 Water Monitoring Activities...................................................................................... 9 4.1 Private Water Sources..........................;............................................................ 9 4.1.1 West Virginia: GIST Conclusions and Recommendations For 4.1.2 West Virginia Private Water Supply Sources...................................... 9 West Virginia: Private Water Supply Sources Activities.................. 10 4.1.3 Ohio: GIST Conclusions and Recommendations for Ohio Private Water Supply Sources........................................................... 11 4.1.4 Ohio: Private Water Supply Sources Activities................................. 12 4.2 Public Water Sources...................................................................................... 13 4.2.1 West Virginia: GIST Conclusions and Recommendations for 4.2.2 West Virginia Public Water Supply Sources..................................... 13 West Virginia Public Water Supply Sources Activities.................... 13 4.2.3 Ohio: GIST Conclusions and Recommendations for Ohio 4.2.4 4.2.5 Public Water Supply Sources............................................................ 14 Ohio Public Water Supply Sources Activities................................... 14 Ohio: OEPA Recommended Well Installation at Little Hocking Water Association Well Field............................................. 15 5.0 Surface Water and Groundwater Monitoring........................................................... 17 6.0 Surface Soil/Biota (Vegetation) Sampling............................................................... 18 7.0 Schedule and Reporting...................................................................--.---......--...... 20 8.0 21 References.......................................................................................................... 2004WorkPlan4.doc Wilmington, DE EXP000388 I Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Monitoring/Sampling Wori< Plan Table of Contents Table 1 Table 2 Table 3 TABLES, Summary Data for Proposed Sampling Locations In and Around DuPont Washington Works Site Summary of GIST Private Water Source Sampling Recommendations Summary of GIST Public Water Source Sampling Recommendations Figure 1 Figure 1.5 Figure 2 Figure 2A Figure 3 Figure 4 Figure 5 Figure 6 FIGURES Offsite Monitoring Locations Near the Washington Works Facility/Local Landfill in West Virginia and Ohio OVSTube Offsite Monitoring Locations Near the Dry Run Landfill in West Virginia Wind Rose - DuPont Washington Works Offsite Monitoring Locations Near the Letart Landfill in West Virginia Public Water Source Monitoring Locations in West Virginia and Ohio Proposed Locations of the Four Shallow Wells at the Little Hocking Well Field Washington Works MOU Schedule Appendix A APPENDICES Phase II Quality Assurance Project Plan, DuPont Washington Works Site, Washington, West Virginia 2004WorkPlan4.doc Wilmington, DE EXP000389 Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Monitoring/Sampling Wo* Plan ______ ________ Introduction 1.0 INTRODUCTION This Phase n Monitoring/Sampling Work Plan (Work Plan) is referenced as Appendix 5 in a Memorandum of Understanding (MOU) between the United States Environmental Protection Agency (USEPA) and E.

AR226-2502 OiiTwil W.einifimWuh P !

AR226-2507 COMPILATION OF HISTORICAL C-8 DATA DUPONT WASHINGTON WORKS MAIN PLANT AND LANDFILLS Kate: Jattttiay 2002 Projtct Mo; D6WW7423 h ^ CORPORATC R6MEDIAT1CW GROUP ftnAlSancobetttwin DuPci^ and OfiS DimwntI Bailey Ml PteHi.

The exemption application of perfluorosulfonic acid(PFSA) resins and perfluorocarboxylic acid(PFCA) resins and ion exchange membranes for chlor-alkali industry Ningxia Huayu Chemical Co., Ltd, which founded in December 2009, is located in Zhongwei Industral Park, Shapotou District, Zhongwei City, Ningxia Hui Autonomous Region.

% AR226-2817 TRADE SECRET Study Title H-24921, H-26313, and H-26225: Evaluation of the Interference of the Test Substance in the Analysis of Rat Serum Lipids AUTHOR: Denise Hoban, B.A, MLT (ASCP) STUDY COMPLETED ON: October 13, 2004 TESTING FACILITY: E.I. du Pont de Nemours and Company Haskell81^ Laboratory for Health and Environmental Sciences Elkton Road, P.O.

AR226-3149 DuPont-3871 TRADE SECRET Study Title H-23960; In Vitro Mammalian Chromosome Aberration Test in Chinese Hamster Ovary (CHO) Cells Authors Ramadevi Gudi, Ph.D.

AR226-3206 TRADE SECRET Study Title H-24042: Biopersistence Screening 10-Dose Oral Gavage Study in Rats Supplement No. 1 Laboratory Project ID: DuPont-2931 AUTHOR: Carol Pinlay, B.A.

P. 1 36z1 PERFLUOROOCTANE SULFONATE (PFOS) Dossier prepared in support for a nomination of PFOS to the UN-ECE LRTAP Protocol and the Stockholm Convention The dossier is prepared by the Swedish Chemicals Inspectorate (Keml) and the Swedish EPA, Sweden August 2004 000288 p2 Preliminary Risk Profile PFOS 2 25 June 2004 000289 p. 3 Prelimina ry Risk Profile PFO S Contents EXECUTIVE SUMMARY .....................................................................................................4 INTRODUCTION .................................................................................................................... 6 PART I.

425 Walnut Street, Taft/ Taft Stettinius & Hollister LLP Suite 1800 / Cincinnati, OH 45202-3957 /Tel : 513 .381 .2838 / Fax : 513 .381~0205 /vvww .taftlaw .com Cincinnati / Cleveland / Columbus / Dayton / Indianapolis / Nortrhern Kentucky / Phoenix / Beijing ROBERT A BtLoTT 513.357.9638 bilott@tafdaw.com 14 1 aa6-38'29 February 16, 2009 F r:r-c9-$-cro 15 7T TSCA Confidential Business Information Center (7407M) EPA East - Room 6428, Attn: Section 8(e) & FYI U .S.

Taft/ 425 Wanut set, Site1800/Cncmnats ON 45202-3957 Tt:!

DRAFT DO NOT CITE OR QUOTE NCEA-I-0836 December 2003 NAS Review Draft www.epa.gov/ncea Chapter 9.