Laws & Regulations

Ethylene Oxide Emissions Standards for Sterilization Facilities: National Emission Standards for Hazardous Air Pollutants (NESHAP)

Learn about the NESHAP for ethylene oxide emissions for sterilization facilities. Find the rule history information, federal register citations, legal authority, and related rules as well as a rule summary.

Report: Fiscal Years 2019 and 2018 Financial Statements for the Pesticides Reregistration and Expedited Processing Fund

Report #20-F-0308, September 8, 2020. Federal law requires agency heads to establish and maintain a records program that includes safeguards against the removal or loss of agency records.

TRI Photo Storybook

Presentation designed to introduce the basic concepts of the Toxics Release Inventory, including why TRI is an important resource for commmunities and which tool provides the easiest access to basic TRI data.

EPA Region 4 to Review Cleanup at Kerr-McGee Chemical Superfund Site

Release Date: April 30, 2026

Performance Specification 7 for Hydrogen Sulfide

Performance Specification 7 - Specifications and Test Procedures For Hydrogen Sulfide Continuous Emission Monitoring Systems In Stationary Sources

Withdrawal of the Approval of Broadly Applicable Alternate Test Methods ALT-125 and ALT-127

Withdrawal of Broadly Applicable Alternate Test Methods ALT-125 and ALT-127 statement and links.

Procedure 5 Quality Assurance Requirements For Vapor Phase Mercury Continuous Emissions Monitoring Systems And Sorbent Trap Monitoring Systems Used For Compliance Determination At Stationary Sources

Promulgated quality assurance Procedure 5 Quality Assurance Requirements For Vapor Phase Mercury Continuous Emissions Monitoring Systems And Sorbent Trap Monitoring Systems Used For Compliance Determination At Stationary Sources

Applications Selected for FY 2025 Brownfields Assessment, Revolving Loan Fund (RLF), Cleanup Grants, and RLF Supplemental Funding

Find out how EPA Brownfields Grant recipients are transforming properties across the country to improve and protect the environment, boost the local economy and enhance communities now and for years to come.

EPA Completes Third Round of Sulfur Dioxide Designations

Information about EPA's third round of final area designations for the 2010 sulfur dioxide air quality standard.

EPA Extends Date of Designations for 2010 Primary Sulfur Dioxide Standard

EPA Extends Date of Designations for 2010 Primary SO2 Standard

Intended Sulfur Dioxide Area Designations – August 2017

Recommendations for Areas to be Designated “Nonattainment” for the 2010 National Air Quality Standard for Sulfur Dioxide

Intended Sulfur Dioxide Area Designations - Feb 2016

Intended SO2 Area Designations - Feb 2016

Recommendations for Areas to be Designated Nonattainment for the 2010 National Air Quality Standard for Sulfur Dioxide

Recommendations for Areas to be Designated “Nonattainment” for the 2010 National Air Quality Standard for Sulfur Dioxide

EPA Supplemental Amendment for the Third Round of SO2 Area Designations

Information about EPA's third round of final area designations for the 2010 sulfur dioxide air quality standard.

Final Data Requirements Rule for the 2010 1-Hour Sulfur Dioxide (SO2) Primary National Ambient Air Quality Standards (NAAQS)

This page contains information related to the Final Data Requirements Rule for the 2010 1-Hour SO2 Primary NAAQS.

2010 Sulfur Dioxide National Ambient Air Quality Standards Implementation Actions

Read about the EPA's infrastructure actions for the 2011 primary SO2 NAAQS. These actions are regarding states' failure to submit SIPs addressing various parts of the standards.

EPA Announces $697,000 to Protect Waterways from Sewage Overflows in South Carolina

U.S. Environmental Protection Agency (EPA) announced the availability of approximately $80 million through the Sewer Overflow and Stormwater Reuse Municipal Grant program to help communities address stormwater and sewer infrastructure needs.

Release Date: April 30, 2026

Report: EPA Needs to Improve Processes for Securing Region 8’s Local Area Network

Report #20-E-0309, September 10, 2020. Exploitation of vulnerabilities may result in the loss of confidentiality, integrity, and availability of personally identifiable information and scientific data.

Report: Fiscal Years 2019 and 2018 Financial Statements for the Pesticide Registration Fund

Report #20-F-0328, September 23, 2020. We found the EPA's PRIA Fund financial statements to be fairly presented and free of material misstatements.

Report: EPA's Lack of Oversight Resulted in Serious Issues Related to an Office of Water Contract, Including Potential Misallocation of Funds

Report #20-P-0331, September 25, 2020. Improved contract management will help the EPA become a better fiscal steward and potentially save millions of taxpayer dollars.