All employees of the Port Authority who, on February 7, 1969, are members of the Public Employees' Retirement System of the State of California shall continue to be members of said Public Employees' Retirement System, with all the rights, privileges and benefits of said system and they shall not be members of the San Francisco City and County Employees' Retirement System; and, notwithstanding any other provisions of this Charter, the City and County shall perform all acts necessary to continue the membership of such employees in said Public Employees' Retirement System.
All employees of the Port Authority who, at the time the transfer provided for herein shall go into effect, are covered under the provisions of a retirement program other than the Public Employees' Retirement System of the State of California shall thereafter continue to be covered under such retirement program and they shall not be members of the San Francisco City and County Employees' Retirement System; and, notwithstanding any other provisions of this Charter, the City and County shall perform all acts necessary to continue the coverage of such employees under such retirement program.
Persons who, after February 7, 1969, become employees of the City and County in positions related to the operation of the State Belt Railroad and who become covered under the provisions of the Railroad Retirement Act by virtue of their employment in such positions shall not be members of the San Francisco City and County Employees' Retirement System.