Notwithstanding any other provision of this Charter, but solely with respect to the determination of the amount of each retirement allowance payable to or on account of a person who retired for service or because of disability under the provisions of Section 8.568 of the Charter prior to July 1, 1975, "final compensation," for time commencing on July 1, 1975, shall mean the rate of remuneration (excluding remuneration for overtime) attached on July 1, 1975 to the rank or position upon which such person's retirement allowance was determined when first effective; provided, further, that each such allowance shall be increased or decreased as of July 1, 1990, and thereafter on the effective date of any legislation fixing the rates of compensation for firefighters under section 8.405 of this Charter by an amount equal to 50% of the rate of change in the salary attached to said rank multiplied by the allowance which was payable for the month immediately preceding each July 1.
This section does not give any person retired under the provisions of said Section 8.568, or his successors in interest, any claim against the City and County for any increase in any retirement allowance paid or payable for time prior to July 1, 1975.
This section does not authorize any decrease in the amount of any allowance from the amount being paid as of June 30, 1975.
No retirement allowance to which the definition of "final compensation" as set forth in this section is applicable shall be subject to adjustment under the provisions of Section 8.526 for time commencing July 1, 1975. Contributions, with interest credited thereon, standing to the credit of a person whose retirement allowance is subject to the provisions of this section and which were made by such person pursuant to the provisions of Section 8.526 shall, effective July 1, 1975, be combined with and administered in the same manner as such person's normal contributions. Contributions, with interest credited thereon, made by or charged against the City and County and standing to its credit on account of a person whose retirement allowance is subject to the provisions of this section and which were made by or charged against the City and County for the purposes of said Section 8.526 shall be applied to provide the benefits under this section.