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between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 EXP000387 Draft Document Do Not Cite or Quote, March 30, 2004 Draft Phase II Monitoring/Sampling Work Plan____ _____ ______Table Of Contents TABLE OF CONTENTS 1.0 1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.

; 5.1.2e @rpaltd.co.uk]; @woodplc.com] Sent: Subject: Fri 11/13/2020 10:50:37 AM Our morning call Received: Fri 11/13/2020 10:50:26 AM 13 November 2020 Presentation.pptx @emrc.co.uk]; Fl @exponent.com]; EEL.

To: From: Sent: Subject: Received: PRE 5.1.2 Fri 1/15/2021 1:53:58 PM oer FW: Follow-up from AmChamEU call Fri 1/15/2021 1:54.13 PM co. k] Best regards 2966077 Exponent International Limited 1 Pride Point Drive Pride park, Derby DE24 8BX Direct Mobil Email: exponent.com www.exponent.com CONFIDENTIALITY NOTICE: This e-mail transmission (and the attachments accompanying it) is intended only for the use of the intended recipient and may contain confidential information belonging to the sender.

2967861 Expert Summary Reports -- comments from The Chemours Company FC, LLC - Thermal and Specialized Solutions segment.

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Meeting AmCham and Ministry of lenW, the Netherlands 8 July 2020, video conference Participants Ministry of Infrastructure and Water Management: 2965184 BL SETH 1.

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The feedback on PFAS restriction-- Fluoropolymers On behalf of Zhejiang Jusheng Fluorochemical Co., Ltd., we would like to extend our greetings to your honored countries that proposing the draft of PFAS restriction .

AR226-2746 -^ Copies to: E.

Application for exemption from EU REACHPFAS control of polytetrafluoroethylene hollow fibre membrane Subject: Application for permanent exemption for polytetrafluoroethylene hollow fibre membranes Basis: First, polytetrafluoroethylene hollow fiber membrane has high strength, high porosity, acid and alkali resistance, high and low temperature resistance.

The Triple Challenge for the RACHP Sector FPP4EU Conference, Federica Rizzo 12 Dec 2022 The voice of the RACHP sector in Europe Full Value Chain of Refrigeration, Air Conditioning and Heat Pump Industry Small - medium - large companies National and sectoral associations Over 200,000 direct employees, over 30bn turnover in Europe Main activities: Promote Decarbonisation of Heating & Cooling Ensure responsible management of all types of Refrigerants Advise on Ecodesign and labelling Corporate members Association members 2 EPEE Members, representing 200K jobs in Europe, make the full product range of refrigeration, air conditioning and heat pump equipment, including ...

17WP Report Recent scientific literature on PFAS in context of the PFAS restriction proposal Date 29 June 2023 Author(s) Milo L. de Baat, PhD Youssef Boudguiyer, MSc Stefan A.E.

FOR DU POST USE ONLY AR226-2928 Approximate Lethal Concentration by Inhalation (ALC) of Haskell Laboratory Report No. 279-85 Haskell E.

FOR DU FONT USE ONLY AR226-2949 Du Pont HLO 379-90 Itl;loesf t Item) tiControl Item) Study Completed On i ; July 11, 1990 Contracting Laboratory 'Biosearch, Inc. ;3408-50 B Street Philadelphia.