CO HB1121

Owners or operators of stationary sources that emit air pollutants must publish all emissions records required by state or federal law on their public websites in downloadable digital format, beginning January 1, 2028

Records must be updated on the same schedule as submissions to state or federal agencies, with records submitted more frequently than monthly allowed to be uploaded monthly

Confidential business information may be redacted from publicly posted records, and the requirement only applies to records generated on or after December 1, 2027

Violations are subject to civil penalties of up to $47,357 per day under existing air quality enforcement provisions

Implementation costs for the Department of Public Health and Environment will be funded through air quality penalty receipts: $500,000 in FY 2026-27 and $900,000 annually in FY 2027-28 and FY 2028-29