Section 11:2242.5 - Retirement benefit calculationA. Except as provided in Subsection B of this Section, a member shall receive a retirement benefit equal to two and one-half percent of average final compensation for every year of creditable service in this subplan, not to exceed one hundred percent of the member's average final compensation.B. Retirement benefits for members who had service in hazardous duty or service under existing plans prior to entering this subplan shall upon retirement eligibility receive a retirement benefit for that prior service based on the applicable accrual rate when earned.C. Average final compensation as defined in R.S. 11:2213 shall be based on all creditable service in the system regardless of the subplan in which such service has been earned.La. Consolidated Public Retirement § 11:2242.5