(i) be payable only if such member has attained age sixty at the time of retirement and has not completed twenty-five years of service as a forest ranger in the service of the department of environmental conservation for which he receives credit under this article, and

(ii) not increase the total allowance to more than he would have received had his total service been rendered as a forest ranger in the service of the department of environmental conservation. For the purpose only of determining the amount of the pension provided herein, the annuity shall be computed as it would be:

(A) if not reduced by the actuarial equivalent of any outstanding loan, and

(B) if not increased by the actuarial equivalent of any additional contributions, and

(C) if not reduced by reason of the member's election to decrease his annuity contributions to the retirement systems in order to apply the amount of such reduction in payment of his contributions for old-age and survivors insurance coverage. g. The increased pensions to a forest ranger in the service of the department of environmental conservation, as provided by this section, shall be paid from additional contributions made by the state on account of such members. The actuary of the retirement system shall compute the additional contribution of each member who elects to receive the special benefits provided under this section. Such additional contributions shall be computed on the basis of contributions during the prospective service of such member which will cover the liability of the retirement system for such extra pensions. Upon approval by the comptroller, such additional contributions shall be certified by him to the commissioner of environmental conservation. The amount thereof shall be included in the annual appropriation of the state for the department of environmental conservation. Such amount shall be paid on the warrant of the comptroller to the pension accumulation fund of the retirement system. h. In computing the twenty-five years of total creditable service of a forest ranger in the service of the department of environmental conservation, full credit shall be given and full allowance shall be made for service of such member in time of war and service with the American expeditionary forces subsequent to November eleventh, nineteen hundred eighteen, and prior to June thirtieth, nineteen hundred nineteen of honorably discharged officers, soldiers, sailors, marines and army nurses, who were actual residents of the state at the time of their entry into the military service of the United States, and the service of members of the national guard in the military service of the United States of America pursuant to the call of the president or Mexican border service. i. The provision of this section shall be controlling notwithstanding any provision in this article to the contrary. j. Notwithstanding any provision of subdivision d, e, or i of this section to the contrary, a member who is in the collective negotiating units designated as the security services unit or security supervisors unit or designated management confidential employees and established pursuant to article fourteen of the civil service law and who has elected or is required to contribute in accordance with this section may, on or before March thirty-first, nineteen hundred ninety-eight, elect to come under the provisions of section three hundred seventy-five-h of this article. Such election shall be duly executed and filed with the comptroller. k. Commencing with the effective date of this section and in a manner determined by the head of the retirement system, the employer shall make contributions to the retirement system to fund the past service liability cost associated with the implementation of this section as those costs are calculated by the retirement system actuary. Such contributions may be made, at the election of the employer, in level dollar installments over a ten year period.