C.R.S. § 12-120-303

(1) This part 3 shall not be construed to prevent or to affect: (a) The work of an employee or subordinate of a professional land surveyor if the work is performed under the responsible charge of the professional land surveyor; (b) The practice of employees of the federal government duly authorized under 43 U.S.C. sec. 772 and 43 CFR 9180.0-3, while engaged in the practice of surveying within the course of their federal employment in the state of Colorado; or (c) The rights of any other legally recognized profession.