Laws & Regulations

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.

Report: EPA Has Sufficiently Managed Emergency Responses During the Pandemic but Needs to Procure More Supplies and Clarify Guidance

Report #20-E-0332, September 28, 2020. On-scene coordinators may not be safe deploying during the COVID-19 pandemic without sufficient personal protective equipment and clear guidance.

Report: Improved EPA Oversight of Funding Recipients' Title VI Programs Could Prevent Discrimination

Report #20-E-0333, September 28, 2020. Despite elimination of the case backlog, additional improvements in the EPA's oversight of Title VI funding recipients could prevent discrimination.

Report: Regions 1 and 5 Need to Require Tribes to Submit More Detailed Work Plans for Grants

Report #20-E-0335, September 29, 2020. Inadequate work plans in Regions 1 and 5 put tribal grants at risk for unsupported costs.

Report: Data Used for Annual Toxics Release Inventory National Analysis Are 99 Percent Complete, but EPA Could Improve Certain Data Controls

Report #20-P-0337, September 30, 2020. The EPA's efforts to follow up with late reporters prior to “freezing” the data contributed to more complete data.

Report: Audit of EPA's Toxic Substances Control Act Service Fee Fund Financial Statements for the Period from Inception (June 22, 2016) through September 30, 2018

Report #20-F-0342, September 30, 2020. We found the fund's financial statements to be fairly presented and free of material misstatement.

Semiannual Report to Congress: April 1, 2020 to September 30, 2020

Report #EPA-350-R-20-002, November 2020. The OIG’s continued productivity and oversight accomplishments are evidenced in this Semiannual Report to Congress.

Report: EPA's Fiscal Years 2020 and 2019 (Restated) Consolidated Financial Statements

Report #21-F-0014, November 16, 2020. We found the EPA's financial statements to be fairly presented and free of material misstatement.