Utah Code Ann. § 11-42-206
(1)
(a) After holding a public hearing under Section 11-42-204 and considering protests filed under Section 11-42-203, and subject to Subsection (3), the governing body shall hold a public meeting to adopt a resolution or ordinance:
(b) In accordance with Section 11-42-203, the governing body:
(2) If the notice under Section 11-42-202 indicates that the proposed assessment area is a voluntary assessment area, the governing body shall:
(b) determine whether to designate a voluntary assessment area, after considering:
(4)
(a) If the governing body adopts a designation resolution or ordinance designating an assessment area, the governing body shall, within 15 days after adopting the designation resolution or ordinance:
(ii) file with the recorder of the county in which property within the assessment area is located a notice of proposed assessment that: