The U.S. Environmental Protection Agency said Tuesday it will review several air-quality decisions affecting Texas, as state officials respond to sharply higher diesel prices by loosening some fuel restrictions. EPA Administrator Lee Zeldin told Gov. Greg Abbott in a letter that the agency would reconsider parts of federal ozone policy affecting the state. The review includes Texas communities classified as not meeting the 2015 ozone standard, a designation that can trigger stricter pollution-control requirements. The EPA also plans to revisit a Biden-era decision rejecting aspects of Texas’ plan to meet federal ozone standards under the Clean Air Act. The announcement does not change the rules immediately. Zeldin said the agency could not predict the review’s outcome, but would work with Texas officials. Abbott declared a statewide disaster Monday over diesel costs. The order allows expanded use of dyed diesel—a fuel generally reserved for off-road equipment and typically barred from public roads—and suspends Texas Low Emission Diesel requirements, subject to federal limits. Abbott said high prices threaten industries and raise costs for families. Diesel averaged nearly $6.40 per gallon nationally, according to AAA figures cited in the report, compared with about 84 cents a month earlier and $2.76 a year earlier. The price figures were not accompanied by an explanation for the unusually steep increase. The EPA said its review would address concerns that Texas is being held responsible for ozone pollution beyond the state’s control. Ozone rules aim to limit pollution that contributes to smog, and revising designations or state compliance decisions could affect the emission controls required in parts of Texas. The price surge is also drawing attention in Congress. Sen. Chuck Grassley, a Republican from Iowa, and other farm-state Republicans have backed a proposal to restrict diesel exports in hopes of increasing domestic supply. The White House denied last week that it was planning a 90-day export ban.