Colorado Revised Statutes Title 25. Health § 25-7-1204. Regulatory assurances

(a) State regulatory requirements that are based exclusively on state authority and that, either directly or indirectly, necessitate reductions in the air pollutant subject to the voluntary agreement;  or

(b) Federal regulatory requirements that:

(a) The owner or operator has agreed in writing to abide by the requirements;  or

(b) The commission promulgates the requirements in regulations that first require all other sources, including mobile sources, of the air pollutant within the affected region within Colorado to implement all available cost-effective measures to reduce emissions of the air pollutant. Such regulations, including the requirements contained therein applicable to the stationary source or group of stationary sources subject to the voluntary agreement, shall not apply to any stationary source or group of stationary sources unless and until the general assembly acts to postpone the expiration of the regulations in accordance with section 24-4-103, C.R.S.