Federal Register #EPA-R08-OAR-2024-0622

EPA Approval of Colorado SIP Revisions for Ozone Attainment in Denver Metro/North Front Range

The Environmental Protection Agency (EPA) is issuing a final rule approving Colorado's State Implementation Plan (SIP) revisions for ozone attainment in the Denver Metro/North Front Range area. - Government Buyer: - Environmental Protection Agency (EPA), Region 8, Air and Radiation Division - Products/Regulations Approved: - Colorado Air Quality Control Commission Regulation 7 (5 CCR 100109): Control of ozone and hydrocarbon emissions from oil and gas, surface coating, solvents, asphalt, graphic arts, and pharmaceuticals - Regulation 25 (5 CCR 100129): Control of emissions from surface coating, solvents, asphalt, graphic arts, and pharmaceuticals - Regulation 26 (5 CCR 100130): Control of emissions from engines and major stationary sources, including RACT for VOC and NOX, breweries, foam manufacturing, and cold rolling mills - Notable Requirements: - Approval covers contingency measures for automotive coating facilities and RACT for specific stationary sources - Excludes one refinery fuel process heater (H1717) due to a technical error; EPA will address this in a future action - Incorporation by reference of Colorado regulations as they pertain to ozone and hydrocarbon emissions control - Relieves certain sanctions previously imposed due to prior disapprovals, except for the unresolved heater H1717 issue - No specific OEMs or commercial vendors are named, as this is a regulatory approval, not a procurement of goods or services - Place of Performance: - Denver Metropolitan Area, Colorado (federal jurisdiction for air quality compliance)

Description

The Environmental Protection Agency (EPA) is approving state implementation plan (SIP) submittals from Colorado under the Clean Air Act (CAA) addressing contingency measures and Reasonably Available Control Technology (RACT) requirements for the 2008 ozone National Ambient Air Quality Standard (NAAQS) in the Denver Metro/North Front Range Serious ozone nonattainment area. The EPA finds that Colorado has met applicable CAA requirements for contingency measures and RACT for certain stationary sources, approving motor vehicle coating contingency measures and regulatory revisions for landfill/biogas fired engines, refinery fuel process heaters, and a cold rolling mill, except for one refinery fuel process heater due to an identified error. This final rule is effective May 11, 2026.

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