The Planning Board as heretofore established pursuant to N.J.S.A. 40:55D-90b is hereby continued. The Planning Board shall have nine members consisting of the following four classes:
A.
Class I: the Mayor.
B.
Class II: one of the officials of the municipality other than a member of the governing body to be appointed by the Mayor.
C.
Class III: a member of the governing body to be appointed by it.
D.
Class IV: six other citizens of the municipality to be appointed by the Mayor. The members of Class IV shall hold no other municipal office, except that one member may be a member of the Board of Education. A member of the Environmental Commission who is also a member of the Planning Board as required by N.J.S.A. 40:56A-1 shall be a Class IV Planning Board member.