EPA Clears Oklahoma's Backlogged State Air Plans for Economic Growth

June 23, 2026

Critical Clean-Up of Oklahoma's Air Quality Plans by EPA

DALLAS, TEXAS – In a significant move, the U.S. Environmental Protection Agency (EPA) resolved over twenty years of delayed State Implementation Plans (SIPs) in Oklahoma by addressing 13 SIP revisions dating from 2002 to 2025. These revisions are designed to synchronize the state's air permitting system with the latest EPA Title V and New Source Review guidelines, which aim to simplify the permitting process without compromising essential health and environmental safeguards. This effort aligns with EPA Administrator Lee Zeldin's goal to nurture both environmental protection and economic growth.

“EPA Region 6 has been diligently working with the Oklahoma Department of Environmental Quality to address needed revisions to the state’s air permitting program. Now, through cooperative federalism, we have achieved revisions that both protect air quality for all Oklahomans and enable businesses to build across the state,” said Regional Administrator Scott Mason. “This is a hallmark example of Administrator Zeldin’s efforts to protect human health and the environment and simultaneously grow the economy.”

“Oklahoma has proven that we can protect our natural resources while promoting strong economic growth,” said Oklahoma Governor Kevin Stitt. “This approval reinforces our commitment to responsible, state-led environmental stewardship and gives businesses the certainty they need to invest, grow, and create jobs.”

Senator Alan Armstrong (R-OK) emphasized the state's appeal to businesses by saying, “Oklahoma has become one of the most business-friendly states in the country by combining affordable energy, reliable infrastructure, and predictable rules. Companies are choosing to invest in our state because they know Oklahoma is committed to growth and getting projects built. Today’s EPA action helps reinforce this advantage by bringing Oklahoma’s air permitting program up to date and providing greater certainty for businesses and job creators.” He expressed gratitude towards EPA Administrator Zeldin for facilitating the backlog's clearance.

Representative Kevin Hern (R-OK-01) shared his appreciation for the Trump administration's role in advancing the SIP revisions, noting that the reduction in bureaucratic delays will empower Oklahoma businesses to thrive. “Today’s action by the EPA helps clear that backlog, providing the certainty they need to grow, compete, and continue driving Oklahoma’s economy forward,” he said.

Representative Frank Lucas (R-OK-3) supported the initiative, stating, “I am pleased to see the EPA approve Oklahoma’s State Implementation Plan revisions that will not only cut burdensome regulations in the permitting process but also improve environmental protections and air quality.”

With the Clean Air Act requiring each state to establish a SIP to meet air quality standards, Oklahoma's approved revisions introduce improvements that clarify the permitting process and eliminate unnecessary documentation. These updates allow faster commencement of non-emitting project components following permit application submission. The revisions apply to both major and minor sources of emissions.

The EPA remains committed to expeditiously clearing SIP backlogs nationwide, ensuring clean air for all Americans.

For more details, view a pre-publication version of the EPA's final approval here.

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