PM10 NAAQS Nonattainment Areas
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-10-19 — Air Quality Plan; Arizona; Pinal County Air Quality Control District; West Pinal County PM10 Nonattainment Area; Fugitive Dust Rules: 2026 — EPA proposed to approve Pinal County Air Quality Control District fugitive-dust rules (vacant lots, unpaved roads/lots, paved roadways, construction sites) as part of the West Pinal County PM10 nonattainment SIP. (novelty: 2)
- 2026-10-19 — Approval and Promulgation of Implementation Plans-Pinal County (Part); West Pinal, AZ PM10 Nonattainment Area; Moderate Area, Serious Area, and Section 189(d) Plan for Attainment of the 24-Hour PM10 Standard: EPA proposed to approve Arizona’s Moderate, Serious, and Section 189(d) SIP for the West Pinal County PM10 nonattainment area, including motor-vehicle emissions budgets, with an attainment date of December 31, 2026 for the 24-hour PM10 standard. (novelty: 2)
Open questions
Related
Contributing findings
Air Quality Plan; Arizona; Pinal County Air Quality Control District; West Pinal County PM10 Nonattainment Area; Fugitive Dust Rules
19-oct-2026
novelty 2
per-area 2
strengthens
Approval and Promulgation of Implementation Plans-Pinal County (Part); West Pinal, AZ PM10 Nonattainment Area; Moderate Area, Serious Area, and Section 189(d) Plan for Attainment of the 24-Hour PM10 Standard
19-oct-2026
novelty 2
per-area 2
introduces