There is hereby created a municipal Planning Board, which will consist of nine members as follows:
A.
Class I. Mayor or Mayor's designee.
B.
Class II. One of the officials of the municipality other than a member of the governing body, to be appointed by the Mayor; the member of the Environmental Commission who is also a member of the Planning Board as required by Section 1 of P.L. 1968, c. 245 (N.J.S.A. 40:56A-1) shall be deemed to be the Class II Planning Board member for purposes of this act in the event that there be among the Class IV members of the Planning Board both a member of the Zoning Board of Adjustment and a member of the Board of Education.
C.
Class III. A member of the governing body to be appointed by it, except that no member for Class III shall be appointed to the Planning Board if the governing body consists of only three members.
D.
Class IV. 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 such member may be a member of the Zoning Board of Adjustment, and one such member may be a member of the Board of Education. The member of the Environmental Commission who is also a member of the Planning Board, as required by Section 1 of P.L. 1968, c. 245 (N.J.S.A. 40:56A-1), shall be a Class IV Planning Board member, unless there be among the Class IV members of the Planning Board both a member of the Zoning Board of Adjustment and a member of the Board of Education, in which case, the member common to the Planning Board and the municipal Environmental Commission shall be deemed a Class II member of the Planning Board.