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

What it does

The U.S. Environmental Protection Agency (EPA) is proposing to approve the "Second 10-Year Maintenance Plan for the Truckee Meadows 24-Hour PM<INF>10</INF> Attainment Area" ("Truckee Meadows Second PM<INF>10</INF> 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 PM<INF>10</INF> 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.

The Environmental Protection Agency's summary, as published in the Federal Register.

What it would change

1 part of Title 40 of the Code of Federal Regulations:

40 CFR 52

What happens next and when

Comments must be received on or before November 2, 2026.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket EPA-R09-OAR-2025-1978 on Regulations.gov
• Title 40 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register