(a) Each first and second class borough shall establish a planning commission consisting of five residents unless a greater number is required by ordinance. A member shall be appointed by the borough mayor for a term of three years subject to confirmation by the assembly, except that a member from a home rule or first class city shall be selected from a list of recommendations submitted by the council. Members first appointed shall draw lots for one, two, and three year terms. Appointments to fill vacancies are for the unexpired term. The compensation and expenses of the planning commission and its staff are paid as directed by the assembly. If a first or second class borough has a population of less than 20,000 or more than 75,000, the commission membership shall be apportioned so that the number of members from home rule and first class cities reflects the proportion of borough population residing in home rule and first class cities located in the borough.
(b) In addition to the duties prescribed by ordinance, the planning commission shall

(1) prepare and submit to the assembly a proposed comprehensive plan in accordance with Alaska Stat. § 29.40.030 for the systematic and organized development of the borough;
(2) review, recommend, and administer measures necessary to implement the comprehensive plan, including measures provided under Alaska Stat. § 29.40.040.