There shall be four alternate members of the Joint Land Use
Board, all of whom shall be municipal residents. Alternate members
shall be appointed by the appointment authority for Class IV members
and shall meet the qualifications of Class IV members. Alternate members
shall be designated at the time of appointment as "Alternate No. 1,"
"Alternate No. 2," "Alternate No. 3" and "Alternate No. 4." The terms
for the alternate members shall be for two years, except that the
terms of the alternate members shall be such that the term of not
more than one alternate member shall expire in any one year; provided,
however, that in no instance shall the terms of the alternate members
first appointed exceed two years. A vacancy occurring otherwise than
by expiration of the term shall be filled by appointment by the appointing
authority for the unexpired term only.