(2) A pension in the amount which, when added to the member's annuity, will provide (a) for a person who is a member on the effective date of P.L. 2011, c. 78, a total retirement allowance of 65% of final compensation, plus 1% of final compensation multiplied by the number of years of creditable service over 25 but not over 30 or (b) for a person who becomes a member of the retirement system after that effective date, a total retirement allowance of 60% of final compensation, plus 1% of final compensation multiplied by the number of years of creditable service over 25 but not over 30; provided, however, that any member who has earned, prior to July 1, 1979, more than 30 years of creditable service, shall receive an additional 1% of his final compensation for each year of his creditable service over 30. The board of trustees shall retire him at the time specified or at such other time within one month after the date so specified as the board finds advisable.
Upon the receipt of proper proofs of the death of such a retired member, there shall be paid to his beneficiary an amount equal to one-half of the final compensation received by the member.