C.R.S. § 12-165-107
12-165-107. Exemptions
12-165-107. Exemptions. (1) This article 165 does not apply to:
(a) (I) An individual performing radon measurement or radon mitigation on a single-family residence that the individual owns and occupies; or
(II) An individual performing radon measurement on a leased dwelling unit that the individual leases or occupies;
(b) An individual performing radon measurement who assists and is under the direct supervision of a licensed radon measurement professional;
(c) An individual performing radon mitigation who assists and is under the direct supervision of a licensed radon mitigation professional;
(d) An agent of a federal, state, or local government agency acting within the scope of the agent's official capacity;
(e) An individual performing radon measurement or radon mitigation as part of radon training approved by a proficiency program; or
(f) An individual acting within the scope of practice for which the individual is licensed, registered, or certified;