(a) Except as provided in subdivision (d), this section may be made applicable in any county which has implemented the provisions of Article 15.6 (commencing with Section 31855). This section shall be applicable if a majority of all the members of the board of supervisors vote to adopt a resolution so to do and a majority of the members of the affected class or classes voting at an election held during 1974, with more than 50 percent of the members participating, favor the termination of retirement benefits under social security. The resolution may specify a date subsequent to the date of adoption of the resolution as the operative date for this section.

(b) (1) Notwithstanding any other provisions of this chapter, the current service pension or the current service pension combined with the prior service pension is an additional pension for members purchased by the contributions of the county or district sufficient, when added to the service retirement annuity, to equal the fraction of one-fiftieth of the member’s final compensation set forth opposite the age at retirement, taken to the preceding completed quarter year, in the following table multiplied by the number of years of current service or years of current and prior service with which the member is entitled to be credited at retirement, but in no event shall the total retirement allowance exceed the member’s final compensation.

(2) In any county operating under this section any limitation in any provisions of this chapter upon the amount of compensation used for computing rates of contributions shall be disregarded.

(c) Whenever in this chapter reference is made to survivorship and other benefits and rights under Section 31676.1, the same shall apply to this section.

(d) Notwithstanding the requirements of subdivision (a), the provisions of this section shall be applicable in a county of the 12th Class, as described in Sections 28020 and 28033, after the board of supervisors of the county adopts a resolution to do so. The provisions adopted pursuant to this subdivision may be made applicable without regard to the requirement of implementing Article 15.6 (commencing with Section 31855) or the requirement of terminating benefits under social security. The provisions adopted pursuant to this subdivision shall apply only to either of the following:

(1) Members first hired by the county on and after the date this section becomes operative in the county.

(2) Members represented by Service Employees International Union Local 521 whose retirement benefits were established pursuant to Section 31676.16 prior to the date this section becomes operative in the county.

(Amended by Stats. 2007, Ch. 86, Sec. 2. Effective July 17, 2007.)