C.R.S. § 29-22-108

(1) Any person who intentionally causes or substantially contributes to the occurrence of a hazardous substance incident in violation of the provision of this article commits a class 4 felony and shall be punished as provided in section 18-1.3-401 , C.R.S. (2) Any person who willfully, recklessly, or with criminal negligence as defined in section 18-1-501 , C.R.S., causes or substantially contributes to the occurrence of a hazardous substance incident in violation of the provisions of this article commits a class 5 felony and shall be punished as provided in section 18-1.3-401 , C.R.S.