Colo. Rev. Stat. § 24-90-204
(1) Every state agency shall, upon publication, deposit at least four copies of each of its state publications with the center. The center may require additional copies of certain state publications to be deposited when designated by the state librarian as being required to fulfill the purposes of this part 2. Publications shall be provided within ten working days of such publication in the following manner:
Source: L. 80: Entire part added, p. 618, § 1, effective July 1. L. 2003: Entire section amended, p. 2464, § 22, effective August 15.