The benefits payable under this chapter shall be paid solely from the Georgia Class Nine Fire Department Pension Fund and in no event shall such benefits be paid from or charged to or be considered a liability of the Georgia Firefighters' Pension Fund. The actuarial soundness of the Georgia Class Nine Fire Department Pension Fund and the compliance of the Georgia Class Nine Fire Department Pension Fund with the requirements of Chapter 20 of this title shall be determined solely with reference to the Georgia Class Nine Fire Department Pension Fund and without regard to the Georgia Firefighters' Pension Fund.