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.

PFAS-Containing Fluorochemicals Used in Semiconductor Manufacturing Plasma-Enabled Etch and Deposition Semiconductor PFAS Consortium Plasma Etch and Deposition Working Group June 28, 2023 Acknowledgments: The Semiconductor PFAS Consortium would like to acknowledge the contributions of the Semiconductor PFAS Consortium Plasma Etch and Deposition Technical Working Group for their efforts to compile this information.

CHEMICAL SAFETY REPORT PROVIDED AS COMMENTS TO THE PUBLIC CONSULTATION ON THE REACH RESTRICTION PROPOSAL ON PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) Submitted by: 1 Date: June 29, 2023 Substance: Polyvinylidene fluoride CAS No.: 24937-79-9 EC No.: 607-458-6 Industrial PVDF-based ultrafiltration membranes required to be installed into (a) new water or wastewater treatment plants designed after EiF (including extensions of/changes to existing plants) subject to special conditions (low spatial requirements) for high quality purification of industrial and urban wastewater, process water and drinking water and (b) existing water or wastewater treatment plants ensuring possibility for maintenance and replacement during the operational life of the plant, both (a) and (b) until at least 15.5 years after EiF. 1 Countries of sales and service: No copying / Use allowed - Property of CHEMICAL SAFETY REPORT Table of Contents Table of Tables ....................................................................................................3 Table of Figures ...................................................................................................4 Abbreviations ......................................................................................................5 Declaration .........................................................................................................6 1 SCOPE OF THIS REPORT ...............................................................................7 2 PHYSICOCHEMICAL PROPERTIES of PVDF........................................................9 3 LIFECYCLE STAGES OF PVDF AND MEMBRANES RELATED TO APPLICATIONS ............................................................................................................... 12 3.1 PVDF transportation.............................................................................. 12 3.2 PVDF unloading at casting solution mixing sites ........................................ 13 3.3 Manufacturing...................................................................................... 16 3.3.1 Manufacturing of PVDF UF membranes ............................................ 18 3.3.1.1 Casting solution mixing ............................................................... 18 3.3.1.2 PVDF UF membranes manufacturing ............................................. 19 3.3.2 PVDF UF membranes module production ......................................... 20 3.3.2.1 Sheet making & Drying ............................................................... 20 3.3.2.2 Potting ..................................................................................... 21 3.3.2.3 Testing and finishing .................................................................. 22 3.3.2.4 Cassette assembly ..................................................................... 23 3.4 Service life of the PVDF UF membranes ................................................... 23 3.5 Disposal procedure ............................................................................... 23 4 PFAS EMISSIONS DURING THE LIFE-CYCLE OF THE PVDF UF MEMBRANES......... 24 4.1 Overview of residues/emissions.............................................................. 24 4.2 Manufacturing of PVDF UF membranes .................................................... 24 4.2.1 Workplace exposure ..................................................................... 24 4.2.2 Exhaust air emissions ................................................................... 24 4.2.3 Wastewater emissions .................................................................. 25 4.2.4 Process waste.............................................................................. 26 4.3 Use phase of PVDF UF membranes.......................................................... 28 4.3.1 Background concentrations............................................................ 28 4.3.1.1 PFAS ........................................................................................ 28 4.3.1.2 TOF.......................................................................................... 29 4.3.2 Leaching test for PVDF raw materials ( ) ................ 29 4.3.3 Leaching test of newly produced PVDF UF membranes....................... 30 4.3.4 Leaching test for PVDF membranes already in use/installed in water treatment plants........................................................................................ 31 1 No copying / Use allowed - Property of CHEMICAL SAFETY REPORT 4.3.5 Conclusion on leaching tests .......................................................... 33 4.4 End-of-service life ................................................................................ 34 4.4.1 Incineration................................................................................. 36 4.4.2 Landfilling ................................................................................... 37 5 SUMMARY & CONCLUSION .......................................................................... 40 6 REFERENCES............................................................................................. 44 Annex ............................................................................................................. 46 2 No copying / Use allowed - Property of CHEMICAL SAFETY REPORT Table of Tables Table 1: Substance identity 9 Table 2: Physicochemical properties of PVDF 10 Table 3: Specific properties of VDF 10 Table 4: Overview on process waste during membrane manufacturing 27 Table 5: Information about PVDF membranes operated in water treatment plants for years 32 Table 6: PVDF tonnages at end of service life based on PVDF commercialized within the EEA 35 Table 7: PVDF tonnages at end of service life based on PVDF commercialized within the EEA - optimized 36 Table 8: PVDF tonnages for membrane production and PFAS emissions in 2022 42 3 No copying / Use allowed - Property of CHEMICAL SAFETY REPORT Table of Figures Figure 1: Structural formula of PVDF.......................................................................9 Figure 2: Transportation system of PVDF raw material consisting of three layers ......... 12 Figure 3: Use of a vacuum lance to transfer PVDF to the storage tank ....................... 13 Figure 4: Overview on Unloading & Mixing Area 1 - Unloading Station ....................... 14 Figure 5: Overview on Unloading & Mixing Area 2 (A) and LEV system connected to unloading system............................................................................................... 15 Figure 6: Filter system and waste collection ........................................................... 16 Figure 7: Main process steps for membrane and module manufacturing ..................... 17 Figure 8: Overview on Unloading & Mixing Area 1 (A) and cleaning room located under Area 1 (B)......................................................................................................... 18 Figure 9: Picture of spin-line at the production site of ...................... 20 Figure 10: Production of membrane sheets ............................................................ 20 Figure 11: Drying of membrane sheets ................................................................. 21 Figure 12: Potting of membranes to produce modules ............................................. 22 Figure 13: Overview of the testing and finishing room ............................................. 22 Figure 14: Digester filled with 100 g anaerobic inoculum (18 to 25% dry solids) and 20 g of the testing sample. ......................................................................................... 38 4 No copying / Use allowed - Property of CHEMICAL SAFETY REPORT Abbreviations ACC AoA CSR DU DW ED EU GC/MS HVAC units LC-MS/MS LEV MBR NMP OC(s) PCPs PFAS PFBA PFBS PFHxA PFHxS PFOA PFOS PFPeA PPE PVDF REACH RMM(s) RPE SEA SOP SPELC/MS TOF UF VDF American Chemical Council Analysis of Alternatives Chemical Safety Report Downstream user Drinking water Endocrine disruptor European Union Gas chromatography/mass spectrometry Heating, ventilation and air conditioning units Liquid chromatography-tandem mass spectrometry Local exhaust ventilation Membrane bioreactor N-methylpyrrolidone Operational Condition(s) Pesticides, pharmaceuticals, personal care products Per- and polyfluoroalkyl substances Perfluorobutanoic acid Perfluorobutanesulfonic acid Perfluorohexanoic acid Perfluorohexanesulfonic acid Perfluorooctanoic acid Perfluorooctanesulfonic acid Perfluoropentanoic acid Personal protective equipment Poly(vinylidene fluoride) Regulation (EC) No 1907/2006 of the European Parliament and of the Council of 18 December 2006 concerning the Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH) Risk Minimization Measure(s) Respiratory protective equipment Socio-Economic Analysis Standard Operating Procedure Solid-phase-extraction liquid chromatography/mass spectrometry total organo-fluorine Ultrafiltration Vinylidene fluoride WWTP Wastewater Treatment Plant 5 No copying / Use allowed - Property of CHEMICAL SAFETY REPORT Declaration We, (" "), are aware of the fact that further evidence might be requested by ECHA to support the information provided in this document.

U.S.

Whiddon Vopak Moda Duane Campbell Vopak Moda Inspector/Enforcement Officer General Manager Project Manager Commercial Director Technical & Maintenance Manager Terminal Manager Commissioning Manager Health Safety Security & Environment EPA Lead Inspector Signature/Date ANTHONY ROBLEDO Digitally signed by ANTHONY ROBLEDO DN: c=US, o=U.S.

/Email: Lead Inspector Tony Robledo U.S.

PFOS, PFOA) have been restricted or banned under EU legislation, more recently, there have been mounting concerns and evidence that `short chain' PFAS are also very persistent and very mobile in the environment, potentially leading to co

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 5 77 WEST JACKSON BOULEVARD CHICAGO, ILLINOIS 60604 SUBJECT: FROM: THRU: TO: CLEAN AIR ACT INSPECTION REPORT ConAgra Foods Packaged Foods LLC, Darien, Wisconsin Erin DuMontelle, Environmental Engineer AECAB (MI/WI) Sarah Marshall, Section Supervisor AECAB (MI/WI) File BASIC INFORMATION Facility Name: ConAgra Foods Packaged Foods LLC Facility Location: W8880 County Road X, Darien, WI 53114 Date of Inspection: August 14, 2023 EPA Inspector(s): 1.

CAA112 (r) INSPECTION REPORT Name: TOBA, Inc / Wald Family Foods, LLC (formerly TOBA, Inc / DI Manufacturing, LLC) Address: 1144 Bridger Court, McPherson,Date of Inspection: January 23-25, 2024 Kansas County: McPhersonCase No: 24KS0123 Phone: (620) 242-1888RMP No: 100000197459 High Risk:FRS No: 110000446991 CAA Title V: NoProgram Level: Program 3 Mailing Address: (Registered Agent) 2621 W.

/Email: Lead Inspector Tony Robledo U.S.

Response ID ANON-75K5-1Z6W-4 Submitted to Consultation on potential amendments to the Persistent Organic Pollutants (POPs) Regulation Submitted on 2023-04-27 14:17:45 Introduction About you 1 Would you like your response to be confidential?

PFAS-Containing Fluorochemicals Used in Semiconductor Manufacturing Plasma-Enabled Etch and Deposition Semiconductor PFAS Consortium Plasma Etch and Deposition Working Group June 28, 2023 Acknowledgments: The Semiconductor PFAS Consortium would like to acknowledge the contributions of the Semiconductor PFAS Consortium Plasma Etch and Deposition Technical Working Group for their efforts to compile this information.

Mapei is among the world's leading manufacturers of chemical products for the building industry.

Operations Water Utilities Department mireyar @donaanacounty.org FRS Number: Identification/Permit Number: Media Identifier Number: NAICS: SIC: 110017841549 NM0030490 N/A 221320 4952 Personnel participating in inspection: Mireya Rascon Doa Ana County Assistant Utilities Department Director David Esparza EPA Lead Inspector Signature/Date EPA-R6/ECDWM Environmental Engineer Digitally signed by DAVID DAVID ESPARZA ESPARZA David Esparza Date: 2026.02.24 12:08:17 -07'00' Date Supervisor Signature/Date ROBERTO BERNIER Date: 2026.03.31 10:53:06 -05'00' Digitally signed by ROBERTO BERNIER Roberto Bernier Date 6ENFORM-019-R9 (02/27/2025) 1 Section I - INTRODUCTION Doa Ana County / South Central WWTP-CMOM Permit No: NM0030490 Inspection Date 11/19/2025 PURPOSE OF THE INSPECTION EPA Region 6 inspector David Esparza, PE, arrived at the Doa Ana County/South Central Wastewater Treatment Plant (WWTP) at approximately 1:30 PM on November 19, 2025, for an announced inspection.

Anseman Calcasieu Refinery Outside Counsel-Attorney Marney Gillmore Calcasieu Refinery Calcasieu Compliance Shannon Gore Calcasieu Refinery Safety Manager Carly Doxey Calcasieu Refinery Maintenance Procurement Scheduler Jake Carlin Calcasieu Refinery Instrumentation &Electrical Lead EPA Lead Inspector Signature/Date Howard Cole {Howard Cole} Digitally signed by Howard Cole Date: 2025.06.26 12:34:29 -05'00' Supervisor Signature/Date KAYLA BUCHANAN Date: 2025.06.26 09:56:41 -05'00' Digitally signed by KAYLA BUCHANAN (214) 665-2116 (225) 219-3312 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 (337) 478-2130 Date {Kayla Buchanan} Date 1 Calcasieu Refining Company Inspection Date: May 13-17, 2024 SECTION I - INTRODUCTION PURPOSE OF THE INSPECTION United States Environmental Protection Agency (EPA) Region 6 inspector Howard Cole ("I") and Kristen Latiolais arrived at the Calcasieu Refining Company LP, ("CRC") facility in Lake Charles, Louisiana on May 13-17, 2024.