Approval of Implementation Plans for Air Quality Planning Purposes; State of Nevada; Truckee Meadows Second 10-Year Maintenance Plan for the 1987 PM-10 Standard
Key claim: EPA is proposing to approve Nevada’s second 10-year plan showing Truckee Meadows will keep meeting the 1987 PM-10 particle-pollution standard, including vehicle-emissions budgets used in local transportation planning.
Abstract
(Proposed Rule · Environmental Protection Agency) The U.S. Environmental Protection Agency (EPA) is proposing to approve the “Second 10-Year Maintenance Plan for the Truckee Meadows 24-Hour PM10 Attainment Area” (“Truckee Meadows Second PM10 Maintenance Plan” or “Plan”) as a revision to the Washoe County portion of the State implementation plan (SIP) for the State of Nevada. The Truckee Meadows Second PM10 Maintenance Plan includes, among other elements, a base year emissions inventory, a maintenance demonstration, contingency provisions, and motor vehicle emissions budgets for use in transportation conformity determinations. With this proposed rulemaking, the EPA is initiating the adequacy process for the 2025, 2030, and 2040 motor vehicle emissions budgets. The EPA is proposing these actions because the SIP revision meets the applicable statutory and regulatory requirements for such plans and motor vehicle emissions budgets. We are taking comments on this proposal and plan to follow with a final action.
Why this matters
PM-10 maintenance plans are the mechanism by which former nonattainment areas like Reno-Sparks keep their Clean Air Act attainment status and avoid reverting to tighter permitting and transportation controls. The embedded vehicle-emissions budgets directly shape what road and transit projects the local MPO can approve, linking air-quality compliance to local transportation planning.