CLEAN WATER ACT COMPLIANCE INSPECTION REPORT for Name of Facility: Dominion - Materials and Metering Services Center Facility Address: 4307 Castlewood Road, Richmond, VA 23234 Mailing Address: 4307 Castlewood Road, Richmond, VA 23234 Report Prepared on: 1/09/2025 Date Report Final as of: Date Stephen Digitally signed by Stephen Clark By: Clark Date: 2025.01.09 11:48:49 -07'00' Environmental Scientist (ERG) Signature MARK Digitally signed by MARK ZOLANDZ ZOLANDZ By: Date: 2025.01.10 10:56:38 -05'00' Signature , , EPA General Information Type of Inspection: Owner: Operator: Permittee: NPDES Permit No: NPDES Permit Effective Date: NPDES Permit Expiration Date: Receiving Water and/or MS4: Latitude and Longitude: Industrial Stormwater Virginia Electric and Power Company DBA Dominion Energy Virginia Dominion Energy Virginia Dominion Energy Virginia VA0087734 November 1, 2020 (modified October 24, 2023) October 31, 2025 Grindall Creek, James River Basin 37.46726, -77.44613 On-Site Facility Inspection Overview On November 19, 2024, a contractor for the U.S.

Gonzalez EPA Region 2-CEPD Enforcement Officer (787) 977-5839 gonzalez.eduardo@epa.gov Status: Final Record Schedule: 1044(c) Multi-media Checklist: ATTACHMENT # N/A Referral: No EPA Lead Inspector Signature/Date X September 4, 2024 1 Supervisor Signature/Date Resource Conservation and Recovery Act University of Puerto Rico Rio Piedras Campus PRR000012088 Digitally signed by DAVID DAVID CUEVAS- CUEVAS-MIRANDA X MIRANDA Date: 2024.09.04 11:59:54 -04'00' D a vid N .

Clarksdale Public Utilities - Clarksdale POTW (MS0020311) Inspection Report Photograph Log Appendix A Photograph Log Page 1 of 27 Inspection Date: October 21, 2024 Clarksdale Public Utilities - Clarksdale POTW (MS0020311) Inspection Report Photograph Log Float gauge Bar screen Photograph 1.

CLEAN WATER ACT COMPLIANCE INSPECTION REPORT for Name of Facility: Dominion - Materials and Metering Services Center Facility Address: 4307 Castlewood Road, Richmond, VA 23234 Mailing Address: 4307 Castlewood Road, Richmond, VA 23234 Report Prepared on: 1/09/2025 Date Report Final as of: Date Stephen Digitally signed by Stephen Clark By: Clark Date: 2025.01.09 11:48:49 -07'00' Environmental Scientist (ERG) Signature MARK Digitally signed by MARK ZOLANDZ ZOLANDZ By: Date: 2025.01.10 10:56:38 -05'00' Signature , , EPA General Information Type of Inspection: Owner: Operator: Permittee: NPDES Permit No: NPDES Permit Effective Date: NPDES Permit Expiration Date: Receiving Water and/or MS4: Latitude and Longitude: Industrial Stormwater Virginia Electric and Power Company DBA Dominion Energy Virginia Dominion Energy Virginia Dominion Energy Virginia VA0087734 November 1, 2020 (modified October 24, 2023) October 31, 2025 Grindall Creek, James River Basin 37.46726, -77.44613 On-Site Facility Inspection Overview On November 19, 2024, a contractor for the U.S.

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FACILITY CONTACT INFORMATION Name, Title Email Address Michael Dubois, Environmental Manager michael.dubois@us.indorama.net Kim Hoyt, Site Director kim.hoyt@us.indorama.net Adam Brown, Regional EHS Representative adam.r.brown@us.indorama.net Leslie Stuart, Integrated Oxides and Derivatives Corporate Environmental Manager leslie.stuart@us.indorama.net James Kalathra, Environmental Team Lead james.kalathra@us.indorama.net Rachel Lavergne, Environmental Team Lead rachel.lavergne@us.indorama.net Allison Broussard, Environmental Specialist allison.broussard@us.indorama.net FACILITY OVERVIEW According to the EPA Envirofacts database, this facility has the following North American Industry Classification System (NAICS) codes (Table 3): NEICVP1446E01 Page 3 of 35 Indorama Ventures Oxides LLC Port Neches, Texas CONTAINS COMPANY-CLAIMED CONFIDENTIAL BUSINESS INFORMATION (CBI) NAICS Code 325110 325199 Table 3.

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DiscoverySearch-killian.cole Calendar DiscoverySearch-killian.cole@usepa.onmicrosoft.com Tuesday, February 4, 2025 - Thursday, September 18, 2025 Time zone: (UTC-05:00) Eastern Time (US & Canada) (Adjusted for Daylight Saving Time) February 2025 Su MoTu WeTh Fr Sa March 2025 Su MoTu WeTh Fr Sa 1 23 45 678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 1 2345 678 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 April 2025 Su MoTu WeTh Fr Sa May 2025 Su MoTu WeTh Fr Sa 12 345 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Sierra Club FOIA Request: 2025-EPA-04193 SC_FOIA_0001788 June 2025 Su MoTu WeTh Fr Sa 12 34 567 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ...

INDUSTRIA GOPIA ET ICO 18730 HOLYOKE REGICMONIDINTAE AD DONATA ILLICIT DISCHARGE DETECTION AND ELIMINATION (IDDE) PROGRAM CITY OF HOLYOKE, MASSACHUSETTS MAY 2023 KLEINFELDER Bright People.

INDUSTRIA GOPIA ET ICO 18730 HOLYOKE REGICMONIDINTAE AD DONATA ILLICIT DISCHARGE DETECTION AND ELIMINATION (IDDE) PROGRAM CITY OF HOLYOKE, MASSACHUSETTS MAY 2023 KLEINFELDER Bright People.

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Daniel Valenta New Mexico Environment Department Levi Dean New Mexico Environment Department Construction Manager Project Manager Environmental Scientist-Specialist Industrial and Stormwater Team Supervisor Bob Prewitt Double M Properties- Owner Vice-President Kelly Fetter E2RC-SWPPP Consultant President David Esparza, PE EPA Lead Inspector Signature/Date Supervisor Signature/Date USEPA-ECDWM Environmental Engineer Digitally signed by DAVID ESPARZA DAVID ESPARZA David Esparza DN: c=US, o=U.S.

Bindend normenkader voor PFOS en PFOA Studie uitgevoerd in opdracht van: OVAM en kabinet van minister Demir Referentie: 2022/RMA/R/2774 Versie 5 Oktober 2022 Bindend normenkader voor PFOS en PFOA Finale versie dd. 5 oktober 2022 VITO Boeretang 200 2400 MOL Belgium BTW No: BE0244.195.916 -- www.vito.be IBAN BE34 3751 1173 5490 BBRUBEBB Into Vision on technology for a better world vito.be AUTEURS Auteurs Distributie: beperkt I Ref: 2022/RMA/R/2774 Dit rapport is de weerslag van een onafhankelijk wetenschappelijk onderzoek op basis van de stand van de kennis van wetenschap en techniek beschikbaar bij VITO op het moment van het onderzoek.

Daniel Valenta New Mexico Environment Department Levi Dean New Mexico Environment Department Construction Manager Project Manager Environmental Scientist-Specialist Industrial and Stormwater Team Supervisor Bob Prewitt Double M Properties- Owner Vice-President Kelly Fetter E2RC-SWPPP Consultant President David Esparza, PE EPA Lead Inspector Signature/Date Supervisor Signature/Date USEPA-ECDWM Environmental Engineer Digitally signed by DAVID ESPARZA DAVID ESPARZA David Esparza DN: c=US, o=U.S.