Determination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, California
EPA finalized that the Portola nonattainment area in Plumas County, California, has attained the 2012 annual fine particulate standard by the attainment date, and issued a clean data determination.
Aforeworn detected this change in the Environmental & Emissions Compliance (EPA) space on August 13, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Low urgency. Businesses in the Portola nonattainment area in Plumas County, California, that are subject to Clean Air Act requirements for fine particulate matter. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Not specified in the excerpt.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Environmental & Emissions Compliance (EPA) continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.
What changed
The area is now formally determined to have attained the 2012 annual fine particulate standard, and a clean data determination has been issued.
Who it affects
Businesses in the Portola nonattainment area in Plumas County, California, that are subject to Clean Air Act requirements for fine particulate matter.
What you must do
No immediate action required; this determination may affect future air quality permitting and planning requirements.
Deadline
Not specified in the excerpt.
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