Determination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, California
What happened
The Environmental Protection Agency (EPA) finalized its determination that the Portola nonattainment area in Plumas County, California, attained the 2012 annual fine particulate matter standard by the December 31, 2025, 'Serious' area attainment date. This determination, signed by Donald Trump, is based on air quality monitoring data from 2023 through 2025, and preliminary data from 2026. The EPA also issued a clean data determination for the area.
Why it matters
This decision means the Portola area has met federal air quality standards for fine particulate matter, suspending some planning requirements for improving air quality. However, the area still needs to submit other plans, and it will remain designated as 'nonattainment' until it can prove it will maintain clean air for 10 years.
Who it affects
- ›Residents of Portola, Plumas County, California
- ›Environmental Protection Agency (EPA)
- ›California state environmental agencies
- ›Businesses operating in Portola nonattainment area
The receipts are official. The summary is ours.
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