DuPontTM, the DuPont Oval Logo, and all trademarks and service marks denoted with TM, SM or are owned by affiliates of DuPont de Nemours, Inc. unless otherwise noted. 2023 DuPont.

P- hilippe Koo Tze Mew 1 0003 72 p. 2 List of Pa rticipants Consultation Meeting on PFCA Action Plan Ottawa, Ontari o February 6 - 7, 200 6 Lampert & Associates for Daikin Manager, Regulatory Affairs Tokyo, Japan Hercules Canada Mississauga, O N John Fisher Jack Soul Manager, Environmental Science DuPont Reguelatory Consultant E .I . du Pont of Canada Kingston, O Kingston, O N N Susan Stalnecker Gary Spitzer Vice President, Risk Management DuPont DuPon t Stephen Korzienowski Kathleen Shelton Technology Manager Global Regulatory Leader DuPont Research & Development DuPont Research & Development Wilmington, DL Wilmington, D L Mike Levy Jim Quick Manager Process Services & President, CPCA Quality Contro l CKF Inc.

Szostek B2, Folsom P.W.1, Capka V.2, Sulecki L.1, Berti W.R.1, Gannon J.T.1, and Buck R.C.3 1 DuPont Cent Development, Wilmington, DE, USA; 2 DuPont Haskell Laboratory, USA; 3 DuPont Chemical Solutions Enterp AR226-3350 8-2 Telomer B Alcohol: CgF^CH^CH^OH (8-2 TBA; CAS# 678-39-7) Background Information A key raw material used in the manufacture of sales products.

Risnen, 1am contacting you on behalf of DuPont, a premier multi-industrial company.

AR226-2636 24 AR226-2636 MARCH 2003 2ND ROUND C-8 SAMPLING DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Date: June 2003 Project No.: 18983753.00037 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 March 2003 2nd Round C-8 Sampling Introduction On March 27th 2003, gromidwater was sampled from four monitoring wells at the DuPont Fayetteville Works, m addition, a combined surface and wastewater sample was collected above Outfall-002.

AR226-2613 1 AR226-2613 C:\Documents and Settings\BARTONC\Desktop\c8\chambers DISPERSION MODELING PROTOCOL Plant-wide C8 Emissions DuPont Chambers Works Facility Deepwater, New Jersey Prepared by: DuPont Engineering Technology (DuET) Environmental Section Wilmington.DE 19898 April 9,2003 DuPont Chambers Works Air Quality Modeling Protocol The following sections describe the dispersion modeling methodology to be employed in order to assess the locations of maximum ambient air concentrations resulting from C8 emissions at the DuPont Chambers Works facility located in Deepwater, New Jersey. 1.

DuPontTM, the DuPont Oval Logo, and all trademarks and service marks denoted with TM, SM or are owned by affiliates of DuPont de Nemours, Inc. unless otherwise noted. 2023 DuPont.

AR226-2634 CM CM nTnxoatl AR226-2634 JANUARY 2003 BASELINE C-8 SAMPLING DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Date: March 2003 Project No.: 18983753.00037 CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 January 2003 Baseline C-8 Sampling Introduction During the week of January 27th 2003, groundwater was sampled from four monitoring wells at the DuPont Fayetteville Works.

TWF003472 COMPANY SANITIZED CBI REMOVED E ID 179096 Project Environmental I No discharge of functionalized fluorochemical (F/F) containing wastewater at Fayetteville l Process will result in discharge of <200kg/yr from DuPont Chambers Works WWTP 1 No discharge of fugitive emissions at ground level i Air emissions will be minimized l Ail F/F will passed through scrubber with expected high efficiency i Community exposure potential will be minimized I Minimum requirements will be that the yearly average concentration outside of DuPont property will be Community Exposure Guideline (CEG=0.3|ig/m3) i Employee exposure potential will be minimized with limited use of PPE

The samples were taken from individuals at the DuPont Washington Works facility in West Virginia.

DuPont; U.S. general; Wood Cty, WV; state of WV; and Washington Cty, Ohio 2 Who... ... are the subjects?

0PmMHatkal Ukarrtarv 1 BUS(B^hiBSSStSBUiB^iB RUbAob4 * O.Bm M Nbwb* D1I 71M W DuPont Haskell Laboratory G tn id L Ktnktdy Director, Applied Toxicology DuPont Haskell Laboratory P.O.

AR226-2634 d > i AR226-2634 JANUARY 2003 BASELINE C-8 SAMPLING DUPONT FAYETTEVILLE WORKS FAYETTEVILLE, NORTH CAROLINA Date: March 2003 Project No.: 18983753.00037 ^ CORPORATE REMEDIATION GROUP An Alliance between DuPont and URS Diamond Barley Mill Plaza, Building 27 Wilmington, Delaware 19805 January 2003 Baseline C-8 Sampling Introduction During the week of January 27th 2003, ground-water was sampled from four monitoring wells at the DuPont Fayetteville Works.

AR226-2174 DISPERSION MODELING PROTOCOL Fluoropolymers Plant-A PFO Emissions DuPont Washington Works Prepared by: .

AR226-2613 AR226-2613 C:\Documents and Settings\BARTONC\Desktop\c8\chambers DISPERSION MODELING PROTOCOL Plant-wide C8 Emissions DuPont Chambers Works Facility Deepwater, New Jersey Prepared by: DuPont Engineering Technology (DuET) Environmental Section Wilmington, DE 19898 April 9,2003 DuPont Chambers Works Air Quality Modeling Protocol The following sections describe the dispersion modeling methodology to be employed in order to assess the locations of maximum ambient air concentrations resulting from C8 emissions at the DuPont Chambers Works facility located in Deepwater, New Jersey. 1.