Environinental CoMtrol Consultant ^ Dan Weber-Site Environmental Engineer ^ Mike Lukas-^iiPont CRG-Prindpal Engineer ^ Andrew Hartten-DuPont CRGr-Senior GeoJPM 6IOZOOHSV ^ 10:00-10:10 ^ 10:10-10:40 ^ 10:40-11:10 ^ 11:10-11:20 <> 11:20-12:20 < 12:20-1:00 IntroductioB (Walt/B Review 30 Day Response (Dan) Current Conditions Summary (Dam/An Break RPI W.P.

,C XT % CH; F2 n > Note that manufacture of these substances typically produces a range of carbon chain lengths > -12,000,000 kg/year produced globally (DuPont: EPAAR 226-1914) 6 000097 Fluorotelomer Based Substances > Applications include oil/water repellents for textiles, paper and leather, levelling agents In paints and coatings > 80% of fluorotelomer intermediates used to produce polymeric materials (t r p : e p a a r 226-h 41) > 20% used to produce chemical S U b S ta n C e S (TRP: EPAAR226-1141) 3F R 7 000098 "Residuals" > Fluorotelomer based substances can contain unreacted or "residual" fluorotelomer intermediates > ~2 wt% in final substances (Prevedouros et al. 2005) represents a mass of -240,000 kg/year globally of fluorotelomer intermediates > Little uncertainty associated to this source 8 000099 "Residuals" Conversion to PFCAs Residual Fluorotelomer Intermediate > Volatile residuals can escape from commercial substances and are capable of dispersion through the atmosphere (long range transport or LRT), a portion converted to PFCAs and deposited to the earth via precipitation

AR226-3183 TRADE SECRET Study Title H-24616: Developmental Toxicity Study in Rats Laboratory Project ID: DuPont-4902 TEST GUIDELINES: U.S.

DUPONT DE NEMOUKi) & COMPANY INC.

EARLIER ISSUES In 1979, the 3M Company notified DuPont that C8 used in Teflon* polymerization may be teratogenic.

AR226-2618 Distribution on last page DuPont Engineering Technologies Wastewater Group Brandywine DuPont Company Analysis of Perfluorooctanoic Acid (PFOA) In Samples From The Chambers Works Wastewater Treatment Facility Final Report Work Done By: Report Written By: Previous Related Reports: Project Code: Period Covered: Notebook Numbers: Date of Issue: Reviewed by: Approved by: Stephen Constable, Lynn Dekleva, Barbara Larsen, Stan Bachmura, R.

Does not contain TSCA CBI Inhalation Approximate Lethal Concentration of H-22359 in Rots DuPont HL-1997-00273 STUDY PERSONNEL The following individuals were responsible for conduct of the study: Management: Scott E.

. _ Lancaster Eika ;ta . vkmingicn, DE i3G;: June 25, 2003 David P, Watkins West Virginia Department of Environmental Protection Division of Water Resources 1201 Greenbrier Street Charleston, West Virginia 25311-1088 2Q03 Public Water Supply Results, West Virginia and Ohio DuPont Washington Works, Washington, WV Dear Mr.

(dba Exygen Research) (Exygen) from DuPont Corporation.

DuPont de Nemours and Company (DuPont) owns the tracts of land upon which the Facility is located.

whpp AR 226_ 1033 QP DuPont Chemical Solutions Enterprise MR# 5354] Bens Viirson 5 em 03 September 24, 2001 Karen Lannon US.

DRAFT MINUTES Meeting: Date & time: Place: Attendance Workplace FPP4EU Collaboration Platform 30 March 2023; 10:00-15:00 (CET) Thon Hotel EU, Brussels (Belgium), meeting room: Germany Virtual meeting via Microsoft Teams List of attendees on pages 7-11 Link to minutes and presentations are here 1.

Waste not contaminated with C-8 would be disposed in the DuPont Dry Run Landfill.

on : con LE, RkoCsoerer oA,sareios r TELECOPY TAF' T, STET.TINIUS & HOLLISTERALLRPR26 1800 FIRSTAR TOWER 425 WALNUT STREET CINCINNATI, OHIO 45202-3957 wo 13T380E2000 -- June 10.2002 -- 1182 PB wd Sn Ee =g Z a3n3 = 55 Chris Negley, Esq.

The virgin Powdered Activated Carbon (PAC Calgon WPX-D) was obtained from DuPont Secure Environmental Treatment (SET) and was stored at room temperature.