C.R.S. § 18-13-109.5

(1) A person commits the crime of intentionally setting a wildfire if he or she:

(a) (I) Intentionally and without lawful authority sets on fire, or causes to be set on fire, any woods, prairie, or grounds of any description, other than his or her own; or

(II) Intentionally permits a fire, set or caused to be set by such person, to pass from his or her own grounds to the grounds of another; and

(b) By so doing, places another in danger of death or serious bodily injury or places any building or occupied structure of another in danger of damage.

(2) Intentionally setting a wildfire is a class 3 felony.

(3) For purposes of this section, "building" shall have the same meaning as set forth in section 18-4-101 (1) and "occupied structure" shall have the same meaning as set forth in section 18-4-101 (2).