Laws & Regulations

Oklahoma SIP: OK 252:100-27. Particulate Matter Emissions from Industrial and Other Processes and Operations, SIP effective 2000-01-03

OK 252:100-27. Particulate Matter Emissions from Industrial and Other Processes and Operations, SIP effective 2000-01-03

Arkansas SIP: Reg 19, Appendix A, SIP effective 2007-05-14 (ARd07) to 2015-04-02

AR SIP: Reg 19, Appendix A, effective 2007-05-14 (ARd07) to 2015-04-02

Arkansas Read Me: Error in 40 CFR 52.170, Identification of plan, in the July 1, 2001 to July 1, 2005, editions of 40 CFR Part 52

Arkansas Read Me: Error in 40 CFR 52.170, [Arkansas] Identification of plan, in the July 1, 2001 to July 1, 2005, editions of 40 CFR Part 52

Arkansas SIP: Reg 26, Chapter 4, SIP effective 2000-11-15 (ARd02) to 2007-05-13

AR SIP: Reg 26, Chap 4, SIP effective 2000-11-15 (ARd02) to 2007-05-13

Arkansas Read Me: SIP Regulations Effective November 15, 2000

Arkansas SIP: Prevention of Significant Deterioration Regulations, As approved by EPA 05/02/91 (56 FR 20137) at 52.170(c)(28) SIP effective 07/01/91

Arkansas Read Me: SIP Regulations Effective November 15, 2000

Arkansas SIP: Reg 19, Chap 10: Regulations for the Control of Volatile Organic Compounds in Pulaski County, As approved by EPA March 4, 2015 (80 FR 11573) SIP effective April 3, 2015 (ARd18)

AR SIP: Reg 19, Chap 10: Regulations for the Control of Volatile Organic Compounds in Pulaski County

Arkansas SIP: Reg 19, Chap 1 SIP effective 2007-05-14 (ARd07) to 2015-04-02

AR SIP Reg 19, Chap 1 SIP effective 2007-05-14 (ARd07) to 2015-04-02

EPA Region 4 to Review Cleanups at 55 Southeast Superfund Sites in 2026  

Release Date: December 4, 2025

2025 Interim Final Rule to Extend Compliance Deadlines

Interim Final Rule and related 2025 Oil and Gas actions

EPCRA Milestones Through the Years (Text Version)

Timeline of the significant events that lead to the creation of EPCRA and subsequent actions.

Poster: Report Fraud Waste and Abuse to the EPA OIG Hotline

The EPA OIG hotline receives complaints of fraud, waste, and abuse in EPA and U.S. Chemical Safety Board programs and operations including mismanagement or violations of law, rules, or regulations by EPA employees or program participants.

State-only Hazardous Waste Subject to Resource Conservation and Recovery Act Manifests

This page contains data which identify the various state-only regulated wastes subject to RCRA manifest requirements under state law.

BCP Ingredients Inc. Facility in Verona, Missouri

Addressing ethylene oxide is a priority for EPA, which is reviewing its current air regulations that limit the amount of EtO certain types of industries release to determine whether legal standards for EtO emissions to the air should be strengthened.

Missouri NPDES Permits

NPDES water permits issued in Missouri.

Eastern NM Rural Water System Pilot Plant - FINAL NPDES PERMIT NO. NM0031235

Eastern New Mexico Water Utility Authority, Final NPDES Permit No. NM0031235

Findings of Failure to Submit State Implementation Plan Revisions in Response to the 2016 Oil and Natural Gas Industry Control Techniques Guidelines for the 2008 Ozone National Ambient Air Quality Standards and for States in the Ozone Transport Region

finding of failure to submit sip revision for oil and gas CTG

City of Centerville, Iowa - Clean Water Act Public Notice

The EPA is providing notice of a proposed Administrative Penalty Assessment in the form of an Expedited Settlement Agreement (“ESA”) against the city of Centerville, Iowa, for alleged violations associated with sewage sludge land application in or around C

City of Park Hills, Missouri - Clean Water Act Public Notice

The EPA is providing notice of a proposed Administrative Penalty Assessment in the form of an Expedited Settlement Agreement (“ESA”) against the city of Park Hills, Missouri, for alleged violations associated with sewage sludge in or around Park Hills, Mis

City of Fairmont, Minnesota - Clean Water Act Public Notice

The EPA is providing notice of a proposed Administrative Penalty Assessment in the form of an Expedited Settlement Agreement (“ESA”) against the city of Fairmont, Minnesota, for alleged violations associated with sewage sludge in or around Fairmont, Minnes