5 Colo. Code Regs. § 1001-24-A-IV
Current through Register Vol. 47, No. 24, December 25, 2024
By no later than July 31, 2029, the Division shall submit a petition for rulemaking to the Air Quality Control Commission proposing to update Parts B and D of Regulation Number 20 with emission standards for model year 2033 and subsequent model year motor vehicles.
5 CCR 1001-24-A-IV