shall be deposited by the clerk with the state treasurer, by whom the same shall be kept separate and apart from all other funds in the state treasurer's hands.

such depositories shall be carried in the name of "Treasurer, State of Colorado", and withdrawals therefrom shall be made and signed in such manner as the state treasurer shall direct. The state treasurer may make payments, without appropriation, of all actual and necessary charges made by such depositories for expenses related to the deposit and withdrawal of moneys received by the treasury department in accordance with the constitution or statutes of Colorado. Such payments shall be made from investment income or any other available revenues. The state treasurer shall contract for all such bank services in accordance with the provisions of the "Procurement Code", articles 101 to 112 of this title. The state treasurer shall make the criteria used in selecting a vendor for bank services available to the finance committees of both houses of the general assembly prior to the award of a contract and shall make all contracts submitted or entered into pursuant to this section available for public inspection in accordance with the provisions of part 2 of article 72 of this title.