AQCC upcoming & previous commission hearings
Upcoming & Previous Commission Hearings
Six months previous & six months past - hearing folders
Request Rulemaking Hearing: Regulation Number 3 - Permitting and Emissions Reporting, Regulation Number 7 - Emissions
January 15, 2026
Request Rulemaking Hearing - Regulation Number 27 - Manufacturing Sector Greenhouse Gas Emissions Standards
February 18-20, 2026
Public Hearing: Regulation Number 9: Boulder County Parks & Open
Space
February 18-20, 2026
Request Rulemaking Hearing: Particulate Matter (PM10) Maintenance Plan Revisions
February 18-20, 2026
Rulemaking Hearing: Regulation Number 7 - Oil & Gas Operations
February 18-20, 2026
Rulemaking Hearing: Regulation Number 24, 26 & 30 - Toxic Air Contaminants
April 15-17, 2026
Rulemaking Hearing: Regulation Number 3 - Permitting and Emissions Reporting, Regulation Number 7 - Emissions Reporting
May 20-22, 2026
Request Rulemaking Hearing: Regulation Number 7 - Oil & Gas Operations
May 20-22, 2026
Request Written Comment Rulemaking Hearing: Common Provisions
July 15-17, 2026
Request Written Comment Rulemaking Hearing: Regulation Number 6, part A - Stationary Source Performance Standards
July 15-17, 2026
Request Written Comment Rulemaking Hearing: Regulation Number 8, Parts A & E - Hazardous Air Pollutants Performance Standards
July 15-17, 2026
Request Written Comment Rulemaking Hearing: Procedural Rules
July 15-17, 2026
Request Rulemaking Hearing: Regulation Number 29 - Lawn and Garden Equipment Emissions Reductions
July 15-17, 2026
Rulemaking Hearing: Particulate Matter (PM10) Maintenance Plan Revisions
July 15-17, 2026
Request Rulemaking Hearing: Regulation Numbers 24, 26 & 30 - Toxic Air Contaminants
December 17-19, 2025
Rulemaking Hearing: Regulation Number 31 - Landfill Methane Regulation
December 17-19, 2025 (continued from August, 2025)
Request for Public Hearing: Regulation Number 9: Boulder County Parks & Open Space
December 17-19, 2025
December 9 & 13, 2025 - These will be joint meetings where public comments on both permits will be heard
Rulemaking Hearing: Ozone State Implementation Plan (SIP) and Associated Regulations
November 19-21, 2025
Public Hearing: Secondary SO2 Design
October 15-17, 2025
Adjudicatory Hearing - Edge Environmental LLC
October 15-17, 2025
Written Rulemaking Hearing - Common Provisions
October 15-17, 2025
Written Rulemaking Hearing - Regulation Number 8 - Hazardous Air Pollutants Performance Standards
October 15-17, 2025
Written Rulemaking Hearing - Regulation Number 6 - Stationary Source Performance Standards
October 15-17, 2025
Rulemaking Hearing: Regulation Number 30 - Toxic Air Contaminants
September 17-19, 2025
Rulemaking Hearing: Regulation Number 28 - Building Performance Standards
September 17-19, 2025
Rulemaking Hearing: Regulation Number 31 - Landfill Methane Regulation
August 20-22, 2025 - Continued to December 17-19, 2025
Public Comment Hearing: Public Service Company of Colorado
July 1, 2025