C.R.S.
Section 25-7-204
Exclusions
(1)
The requirements of the state implementation plan for prevention of significant deterioration of ambient air quality shall not apply to a major stationary source or major modification with respect to a particular pollutant if the owner or operator demonstrates that:(a)
As to the pollutant, the source or modification is subject to part 3 of this article, and the source or modification would impact no area attaining the national ambient air quality standards (either internal or external to areas designated as nonattainment under section 107 of the federal act); or(d)
Such emissions would not be significant.(2)
The following pollutant concentrations shall be excluded in determining compliance with maximum allowable increases:(a)
Concentrations attributable to the increase in emissions from sources which have converted from the use of petroleum products, natural gas, or both, by reason of an order in effect under section 2(a) and (b) of the federal “Energy Supply and Environmental Coordination Act of 1974” (or any superseding legislation) over the emissions from such sources before the effective date of such an order, but not more than five years after the effective date of such an order;(b)
Concentrations attributable to the increase in emissions from sources which have converted from using natural gas by reason of a natural gas curtailment plan in effect pursuant to the federal “Power Act” over the emissions from such sources before the effective date of such plan but not more than five years after the effective date of the plan; and
Source:
Section 25-7-204 — Exclusions, https://leg.colorado.gov/sites/default/files/images/olls/crs2023-title-25.pdf (accessed Oct. 20, 2023).
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