C.R.S. § 8-20-402

The director of the division of oil and public safety shall make, promulgate, and enforce rules setting forth minimum general standards consistent with the provisions of section 8-20-405 covering the design, construction, location, installation, and operation of equipment for storing, handling, transporting, dispensing, and utilizing liquefied petroleum gases, and specifying the odorization of said gases and the degree thereof and the odorizing agent to be used therein. These rules shall be such as are reasonably necessary for the protection of the health, welfare, and safety of the public and persons using these materials and shall be in substantial conformity with the generally accepted standards of safety concerning the same subject matter. Such rules shall be adopted by the director of the division of oil and public safety only after a public hearing thereon.