Laws & Regulations
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Unacceptable Substitute Refrigerants
This page contains a table of substitute refrigerant listed as unacceptable for use in variouss refrigeration and air conditioning end-uses.
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PRIA Glossary
Pesticide registration improvement extension act (PRIA 3) definition of terms glossary
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Generic Substitute Names Used in SNAP Listings
This page contains the generic names used prior to February 1996 as well as its associated trade name
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EPA Decides on Cleanup Plans for Seven Abandoned Uranium Mine Sites in Navajo Nation
EPA News Release: EPA Decides on Cleanup Plans for Seven Abandoned Uranium Mine Sites in Navajo Nation
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EPA Region 4 marks 15th anniversary of Deepwater Horizon oil spill
Regional Administrator McOmber and staff visit coastal restoration initiatives on the Gulf Coast
EPA News Release: EPA Region 4 marks 15th anniversary of Deepwater Horizon oil spill
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Region 1 Approved TMDLs by State
Listing of approved TMDLs for New England states.
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Subpart AA–Pulp and Paper Manufacturing
Details GHGRP rulemaking actions affecting Subpart AA of the program and provides links to relevant fact sheets, rulemaking documents, and other supporting materials.
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EPA Settlement Protects Buffalo Municipal Housing Authority Residents from Lead Paint
EPA News Release: EPA Settlement Protects Buffalo Municipal Housing Authority Residents from Lead Paint
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Specific Elements for Each of the Major SIP Types for Sulfur Dioxide (SO2)
Required elements differ depending on the type of state implementation plan (SIP).
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Synthetic Minor NSR Permit: Berry Petroleum Company - Section 23 Compressor Station
This page contains documents related to the synthetic minor NSR permit for the Berry Petroleum Company Section 23 Compressor Station, located on the Uintah and Ouray Indian Reservation in Uintah County, UT.
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Tribal Consultation and Coordination on EPA’s Proposal to Revise the Federal Water Quality Standards Regulation to Protect Tribal Reserved Rights
On November 28, 2022, the EPA issued a proposed rule to revise the water quality standards (WQS) regulation at 40 CFR 131 regarding how WQS must protect aquatic and aquatic-dependent resources reserved to tribes through treaties, statutes, executive ord...
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Withdrawal of the Proposed Rule Tribal Baseline Water Quality Standards
On December 20, 2024, the EPA Administrator signed the withdrawal of the proposed rule entitled “Federal Baseline Water Quality Standards for Indian Reservations,” which published in the Federal Register on May 5, 2023.
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Federal Human Health Criteria for Washington State Waters
On November 14, 2022, EPA signed a rule to restore the protective and science-based federal human health criteria (HHC) for the state of Washington’s waters.
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Summary of Seattle-Tacoma Puget Sound Area 8-Hour Ozone 110(a)(1) Maintenance Plan
Summary of the Seattle-Tacoma Puget Sound Area 8-hour ozone 110(a)(1) maintenance plan under the Washington air quality SIP.
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Summary of Wallula Particulate Matter (PM-10) Attainment Plan
Summary of the Wallula PM-10 attainment plan under the Washington air quality SIP.
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Pennsylvania SIP, Chapter 121.1 Definitions
Pennsylvania SIP -EPA Approved Regulations
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Summary of Spokane Particulate Matter (PM-10) Maintenance Plan
Summary of the Spokane PM-10 maintenance plan under the Washington air quality SIP.
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Regulation of Genetically Engineered Microorganisms Under FIFRA, FFDCA and TSCA
Learn about the history and status of regulation of genetically engineered microorganisms.
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Emissions During Periods of Startup, Shutdown, & Malfunction (SSM)
EPA issued a final action to ensure states have plans in place that are fully consistent with the Clean Air Act and recent court decisions concerning startup, shutdown and malfunction (SSM) operations.
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Volatile Organic Liquid Storage Vessels - Including Petroleum Storage Vessels: New Source Performance Standards (NSPS)
The Environmental Protection Agency (EPA) is proposing amendments to the Standards of Performance for Volatile Organic Liquid Storage Vessels (Including Petroleum Liquid Storage Vessels) for which construction, reconstruction, or modification commenced aft