(a) Except when specifically provided otherwise in this chapter, the board, upon recommendation of the fund's actuary, shall adopt and establish reasonable actuarial assumptions, interest rates, and mortality tables to be used under this chapter.
(b) When determining the commuted value of future benefits under the fund during a particular calendar year, the five-year average of the 10-year treasury bond (calculated as of the last business day of each of the last five years averaged together) is the interest assumption that must be used.
(c) When calculating the limits under Section 415 of the Internal Revenue Code, the applicable mortality table and applicable interest rate determined by the United States secretary of the treasury and in effect at the time of the calculation must be used. (Ord. Nos. 20960; 21582; 28739; 30162)