Evidence Intelligence

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Policy intelligence brief

2026-16510 — Determination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, California

The Environmental Protection Agency (EPA) is finalizing our determination that the Portola nonattainment area in Plumas County, California, attained the 2012 annual fine particulate matter ("PM<INF>2.5</INF>") national ambient air quality standard (NAAQS or "standard") by the December 31, 2025 "Serious" area attainment date. This determination is based on ambient air quality monitoring data from 2023 through 2025. We are also finalizing a clean data determination (CDD) based on the 2023 through 2025 data and our e…

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Legal stateEnacted or issuedVerify the effective date, covered entities, and operative text.
JurisdictionUnited StatesFederal-source record
Latest recorded action2026-08-13Final rule.
Primary sourceFed. RegisterOriginal public record linked

What the evidence says

Key findings

01
Issues named in the record

Certification & Standards

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2026-16510 evidence graph

Determination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, California

6 nodes · 5 evidenced edges
Policy record 1Policy theme 1Documented actor 1Policy family 1Jurisdiction 1Original source 1
explicitly concerns: Theme named in the title or stored summaryapplies in: Jurisdiction recorded for this source typedocumented by: Original source URL stored with the policy recordissued by: Issuing agency named in the tracked public recordmember of family: standalonePolicy record2026-16510Determination of Attainment…2026-16510: Determination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, CaliforniaPolicy themeCertification & Standa…Explicit record textCertification & Standards: Explicit record textJurisdictionUnited StatesFederal policy jurisdictionUnited States: Federal policy jurisdictionOriginal sourceFed. RegisterOriginal public sourceFed. Register: Original public sourceDocumented actorEnvironmental Protecti…agencyEnvironmental Protection Agency: agencyPolicy familyDetermination of Attai…USDetermination of Attainment by the Attainment Date and Clean Data Determination for the 2012 Annual Fine Particulate Standard; Plumas County, California: US

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