N.J. Stat. § 40:56A-1
The governing body of any municipality may by ordinance establish an environmental commission for the protection, development or use of natural resources, including water resources, located within its territorial limits. The commission shall consist of not less than five nor more than seven members, appointed by the mayor of the municipality, one of whom shall also be a member of the municipal planning board and all of whom shall be residents of the municipality; the members shall serve without compensation except as hereinafter provided. The mayor of the municipality shall designate one of the members to serve as chairman and presiding officer of the commission. The terms of office of the first commissioners shall be for one, two or three years, to be designated by the mayor in making his appointments so that the terms of approximately 1/3 of the members will expire each year, and their successors shall be appointed for terms of three years and until the appointment and qualification of their successors. The mayor or governing body of the municipality may remove any member of the commission for cause, on written charges served upon the member and after a hearing thereon at which the member shall be entitled to be heard in person or by counsel. A vacancy on the commission occurring otherwise than by expiration of a term shall be filled for the unexpired term in the same manner as an original appointment. Notwithstanding any other provisions of law to the contrary, the powers of appointment and removal hereby accorded to the mayor of a municipality shall be vested in the elected official so designated or, where there is a vacancy in the office of mayor, in the duly designated acting mayor.
The governing body may, by ordinance, provide for the appointment of not more than two alternate members. Notwithstanding the provisions of any other law or charter heretofore adopted, the ordinance shall provide the method of appointment of alternate members. Alternate members shall be designated at the time of appointment by the authority appointing them as "Alternate No. 1" and "Alternate No. 2."
The terms of the alternate members shall be for two years, except that the terms of the alternate members first appointed shall be two years for Alternate No. 1 and one year for Alternate No. 2 so that the term of not more than one alternate member shall expire in any one year. A vacancy occurring otherwise than by expiration of term shall be filled by the appointing authority for the unexpired term only.
An alternate member shall not be permitted to act on any matter in which he has either directly or indirectly any personal or financial interest. An alternate member may, after public hearing if he requests one, be removed by the governing body for cause.
An alternate member may participate in discussions of the proceedings but may not vote except in the absence or disqualification of a regular member. A vote shall not be delayed in order that a regular member may vote instead of an alternate member. In the event that a choice must be made as to which alternate member is to vote, Alternate No. 1 shall vote first.
N.J.S. § 40:56A-1