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Recently active federal rulemakings, soonest-closing first.

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Water Quality Standards Regulatory Revisions to Protect Tribal Reserved RightsEPARulemaking
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Drinking Water Contaminant Candidate List 6 (CCL 6)EPANonrulemaking
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Louisiana Underground Injection Control Program; Class VI PrimacyEPARulemaking
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Water Quality Standards to Protect Aquatic Life in the Delaware RiverEPARulemaking
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Revisions to Establish the Sixth Unregulated Contaminant Monitoring Rule (UCMR 6) for Public Water SystemsEPARulemaking
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Regulatory Determinations for Contaminants on the Fifth Contaminant Candidate ListEPANonrulemaking
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National Pollutant Discharge Elimination System (NPDES): 2026 Issuance of the Multi-Sector General Permit for Stormwater Discharges Associated with Industrial ActivityEPANonrulemaking
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Perchlorate National Primary Drinking Water RegulationEPARulemaking
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Arizona Underground Injection Control Program; Class I-VI PrimacyEPARulemaking
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WOTUS Notice: The Final Response to SCOTUSEPANonrulemaking
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Texas Underground Injection Control Program; Class VI PrimacyEPARulemaking
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Proposed MPRSA Research Permit No. EPA-HQ-MPRSA-2025-001 - Carboniferous, Inc. Research Project (Orca Basin, Gulf of America)EPANonrulemaking
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Establishment of Public Docket and Listening Sessions on Implementation Challenges Associated with Clean Water Act Section 401EPANonrulemaking
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Updated Definition of Waters of the United StatesEPARulemaking
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Colorado Underground Injection Control (UIC) Program; Class VI Primacy ApplicationEPARulemaking
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Updating the Water Quality Certification RegulationsEPARulemaking
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Review of Science on Fluoride in Drinking WaterEPANonrulemaking
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Proposed 2026 Financial Capability Assessment for Clean Water Act ObligationsEPANonrulemaking
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Clean Water Act Section 312 Uniform National Discharge Standards Pre-Proposal RecommendationsEPARulemaking
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Community Right to Know Reporting Requirements Under Sections 311 and 312 of the Emergency Planning and Community Right to Know Act, Request for Comment on Renewal of Information Collection Request (ICR)EPANonrulemaking
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Trade Secret Claims for Community Right-to-Know and Emergency Planning (Renewal)EPANonrulemaking
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National Priorities List, Notice of Proposed Rulemaking; U.S. Smelter and Lead Refinery, Inc.EPARulemaking
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Technical Assistance Needs Assessments (TANAs) at Superfund Remedial or Removal Sites ICREPANonrulemaking
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Information Collection Request for the Notification of Episodic Releases of Oil and Hazardous Substances (Renewal)EPANonrulemaking
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Continuous Release Reporting Regulations (CRRR) under CERCLA 1980; Continuous Release Reporting Requirement Including Analysis for Use of Continuous Release Reporting Forms (Renewal)EPANonrulemaking
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NDAA Mandated Addition of Certain Per- and Polyfluoroalkyl Substances (PFAS) to the Toxics Release Inventory for Reporting Year 2021EPARulemaking
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Changes to Reporting Requirements for Per- and Polyfluoroalkyl Substances; Community Right-to-Know Toxic Chemical Release ReportingEPARulemaking
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Implementing Statutory Addition of Certain Per- and Polyfluoroalkyl Substances (PFAS) to the Toxics Release Inventory for Reporting Years 2021 and 2022EPARulemaking
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Connecticut SIP Submittals for the 2008 Ozone NAAQSEPARulemaking
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Air Plan Approval; Rhode Island; Infrastructure State Implementation Plan Requirements for the 2015 Ozone StandardEPARulemaking
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Air Plan Approval; Rhode Island; Decommissioning of Stage II Vapor Recovery SystemsEPARulemaking
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Designations of Areas for Air Quality Planning Purposes; Greater Connecticut; 8-Hour Ozone Nonattainment Area; Reclassification to SeriousEPARulemaking
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Air Plan Approval; Vermont; Regional Haze State Implementation Plan for the Second Implementation PeriodEPARulemaking
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Air Plan Approval; Connecticut; State Implementation Plan Revision Required as a Result of a Definition Change Due to the Ozone ReclassificationEPARulemaking
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Air Plan Approval; Connecticut; 2014 and 2017 Periodic Emissions Inventory for 2008 8-Hour Ozone NAAQSEPARulemaking
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Air Plan Approval; Rhode Island; Amendments to Motor Vehicle Inspection and Maintenance ProgramEPARulemaking
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Air Plan Approval; Maine; Chapter 140: Part 70 Air Emission License RegulationEPARulemaking
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Air Plan Approval; Connecticut; New Source Review Permit Program State Plan RevisionEPARulemaking
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Approval of the Clean Air Act, Section 112(l), Authority for Hazardous Air Pollutants; State of Connecticut Department of Energy and Environmental Protection; Approval of the Clean Air Act Section 502, State Operating Permit Programs, Connecticut Department of Energy and Environmental ProtectionEPARulemaking
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Revision to the State Implementation Plan Consent Order No. 8383 – Algonquin Gas Transmission, LLC and Negative Declaration for Rubber Tire Manufacturing SourcesEPARulemaking
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Air Plan Approval; Rhode Island; Regional Haze State Implementation Plan for the Second Implementation PeriodEPARulemaking
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Air Plan Approval; Connecticut; Ozone Ambient Air Quality Standard and Adhesive and Sealants Regulation RevisionsEPARulemaking
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Operating Permit Program Approval; New Hampshire; Revised DefinitionsEPARulemaking
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Single Source VOC RACT Order for Hutchinson Sealing SystemsEPARulemaking
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Air Plan Approval; Connecticut; Revised Format for Materials Incorporated by ReferenceEPARulemaking
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Air Plan Approval; New Hampshire; Updates to Materials Incorporated by ReferenceEPARulemaking
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Massachusetts: Final Authorization of State Hazardous Waste Management Program RevisionsEPARulemaking
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Callahan Mine - Draft Explanation of Significant Differences (ESD)EPANonrulemaking
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Baird & McGuire ROD Amendment Proposed Plan Admin. Record FileEPANonrulemaking
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Savage Municipal OU1 Draft Explanation of Significant Differences (ESD)EPANonrulemaking
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