Utah Code Ann. § 10-3b-103
(1) A municipality operating on May 4, 2008, under the council-mayor form of government:
(a) shall, on and after May 5, 2008:
(ii) be subject to:
(b) is not subject to:
(2) A municipality operating on May 4, 2008 under a form of government known under the law then in effect as the six-member council form:
(a) shall, on and after May 5, 2008, and whether or not the council has adopted an ordinance appointing a manager for the municipality:
(ii) be subject to:
(b) is not subject to:
(3) A municipality operating on May 4, 2008, under a form of government known under the law then in effect as the five-member council form:
(a) shall, on and after May 5, 2008:
(ii) be subject to:
(b) is not subject to:
(4) Subject to Subsection (5), each municipality other than a metro township incorporated on or after May 5, 2008, shall operate under:
(5) Each town shall operate under a five-member council form of government unless:
(6) Each metro township:
(b) is subject to:
(c) is not subject to:
(7)
(a) As used in this Subsection (7), "council-manager form of government" means the form of municipal government:
(b) A municipality operating on May 4, 2008, under the council-manager form of government:
(i) shall:
(B) be subject to:
(ii) is not subject to:
(8)
(a) As used in this Subsection (8), "interim vacancy period" means the period of time that:
(b)
(ii) Notwithstanding Subsection (8)(b)(i):