SEC. 6.4. NORMAL RETIREMENT BENEFITS.
   (a)   Volunteer Firefighter. A monthly supplemental retirement benefit after reaching the age of 55 and with 20 years of service shall be paid from the Supplemental Retirement Fund in an amount equal to seventy-five dollars ($75.00).
   (b)   Full-Time Paid Firefighter. A monthly supplemental retirement benefit after reaching the age of 55 years and with 20 years of service shall be paid from the Supplemental Retirement Fund in an amount of ten percent (10%) of the firefighter’s monthly salary at the time immediately preceding retirement, but in no case shall this amount exceed one hundred fifty dollars ($150.00).
   (c)   Combination Full-Time Paid and Volunteer Service. A member’s full-time and volunteer service time can be combined to equal 20 years of service and shall be paid from the Supplemental Retirement Fund on a prorated basis as decided by the Board of Trustees.
   (d)   If any member who has been a member of a rated fire department with a Local Relief Fund becomes employed with the Whiteville Fire Department, the member’s service time may be transferred to the Whiteville Local Relief Fund after the member has served five years, providing all the rights and privileges as other members of the Whiteville Fire Department.