Colo. Rev. Stat. § 24-90-512
The governing body shall determine the amount of moneys necessary to be raised by a levy on the taxable property located within the facilities district, taking into consideration other sources of revenue of the library district and the facilities district, and shall fix a rate of levy that, when levied upon every dollar of the valuation for assessment of taxable property within the facilities district together with other revenues, shall raise the amount required by the library district and the facilities district during the ensuing fiscal year to supply funds for paying expenses of organization and the costs of acquiring, financing, constructing, installing, operating, or maintaining the library capital facilities and promptly to pay in full when due all interest on and principal of general obligation bonds, indebtedness, and other obligations issued by the library district or the facilities district for the library capital facilities located within the facilities district. In the event of accruing defaults or deficiencies, additional levies may be made as provided in section 24-90-513. In accordance with the time schedule provided in section 39-5-128, C.R.S., the governing body shall certify to the board of county commissioners of each county in which the facilities district or a portion of the facilities district lies the rate so fixed in order that, at the time and in the manner required by law for the levying of taxes, such board of county commissioners shall levy such tax upon the valuation for assessment of all taxable property within the facilities district.
C.R.S. § 24-90-512