Federal Register #2026-20640

EPA approval of Oklahoma’s interstate sulfur dioxide air-quality provisions

The U.S. Environmental Protection Agency finalized a regulatory action on Oklahoma’s air-quality plan. - Government buyer/agency: U.S. Environmental Protection Agency (EPA), including its Region 6 office; Oklahoma is the state whose plan is addressed. - Action: EPA approved portions of Oklahoma’s State Implementation Plan under the Clean Air Act concerning interstate transport of sulfur dioxide (SO₂) emissions and the 2010 1-hour SO₂ air-quality standard. - Finding: EPA determined that Oklahoma’s plan adequately prevents its emissions from significantly contributing to nonattainment or interfering with maintenance of the standard in other states. - Procurement scope: This is a regulatory action, not a request to purchase products or services. No OEMs, vendors, products, quantities, or part numbers are identified.

Description

The Environmental Protection Agency is approving portions of Oklahoma’s State Implementation Plan submitted on May 28, 2021. The approval addresses the state’s interstate transport requirements under the Clean Air Act for the 2010 1-hour sulfur dioxide primary National Ambient Air Quality Standard. EPA determined that the plan has adequate provisions to prevent Oklahoma emissions from significantly contributing to nonattainment or interfering with maintenance of the standard in another state. The final rule is effective November 9, 2026.

View original listing