April 8, 2026
Earthworks is grateful for the opportunity to provide comments on the proposed revisions to Regulations 24, 26, and 30 to meet the statutory mandate of House Bill 22-1244 and adopt additional emissions controls for sources of the Priority Toxic Air Contaminants (PTACs) identified in Regulation 30.
During previous Regulation 30 rulemakings in 2025, Earthworks primarily supported the participation of Community Organized for Clean Air (COCA) as a party to the proceedings. HB 22-1244 was the hard-earned result of years of tireless advocacy by Colorado community members including those directly represented by COCA. The participation of those same community members in the rulemaking processes promulgated by this landmark legislation is essential to guarantee that the rules achieve the desired outcome and result in meaningful improvements in air quality in communities directly impacted by sources of PTACs.
For this reason, we were encouraged by the decision of the Commission to prioritize air toxics that were of particular concern to COCA and impacted community members during the January 2025 Regulation 30 rulemaking…