Data / Federal rules / 2024-17091

Air Plan Approval and Conditional Approval; Colorado; Regulation Numbers 7 and 21 and RACT Requirements for the 2008 8-Hour Ozone Standard for the Denver Metro/North Front Range Nonattainment Area

The Environmental Protection Agency published this proposed rule in the Federal Register on August 6, 2024. Comments closed on September 5, 2024.

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What the agency says

The Environmental Protection Agency (EPA) is proposing to approve and conditionally approve portions of a State Implementation Plan (SIP) submission from the State of Colorado dated May 3, 2024. The submission relates to Colorado Air Quality Control Commission (AQCC or Commission) Regulation Number 7 (Reg. 7) and Regulation Number 21 (Reg. 21), and addresses Colorado SIP obligations related to reasonably available control technology (RACT) requirements for sources in nonattainment areas for the 2008 ozone National Ambient Air Quality Standards (NAAQS). The EPA is taking this action pursuant to the Clean Air Act (CAA).

Key facts

Document number: 2024-17091
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: August 6, 2024
Comments due: September 5, 2024
Dates: Written comments must be received on or before September 5, 2024.
Docket: EPA-R08-OAR-2024-0225; FRL-12122-01-R8
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Greenhouse gases; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 9

The document on federalregister.gov PDF

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Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in August 2024

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.