#2026-03846Hava Planı Onayı; Illinois; St. Louis Alanının Illinois Bölümü için 2015 Ozon Standardı Temiz Veri Tespiti
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Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard. Published in the Federal Register / US official sources.
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Action
Proposed rule.
Key Changes
- Air Plan Approval; Illinois; Clean Data Determination for the Illinois Portion of the St. Louis Area for the 2015 Ozone Standard
Obligations
What this law requires
Illinois EPA must submit complete, quality-assured, and certified ambient air monitoring data for the 2023-2025 design value period demonstrating attainment of the 2015 ozone NAAQS for the Illinois portion of the St. Louis area
Illinois EPA must submit exceptional events requests to EPA when claiming that emissions from events outside the area's control contributed to ozone violations
EPA must issue final agency action on Illinois' exceptional events request that was submitted on December 18, 2025
Upon EPA's determination of attainment, Illinois is suspended from submitting attainment demonstrations for the 2015 ozone NAAQS
Upon EPA's determination of attainment, Illinois is suspended from submitting Reasonably Available Control Measures (RACM) plans related to attainment of the 2015 ozone NAAQS