C.R.S. § 12-145-106

(1) An individual who works as a guide must be eighteen years of age or older and hold either a valid first aid or first aid instructor’s card issued by the American Red Cross or evidence of equivalent training as approved by the director. An individual who violates this subsection (1) commits a civil infraction. (2) It is a violation of this article 145 for an individual whose outfitter registration has been revoked or suspended to work as a guide.