Va. Code § 15.2-1418
A special meeting of the governing body shall be held when called by the chairman or mayor or requested by two or more of the members of the board of supervisors or council. The call or request shall be made to the clerk, and shall specify the matters to be considered at the meeting. Upon receipt of such call or request, the clerk of the governing body, after consultation with the chairman or mayor, shall immediately notify each member of the governing body and the attorney for the Commonwealth or the county or municipal attorney, as appropriate in writing delivered in person or to his place of residence or business or, if so requested by the member of the governing body, by electronic mail or facsimile to attend such meeting at the time and place stated in the notice. Such notice shall specify the matters to be considered at the meeting. No matter not specified in the notice shall be considered at such meeting, unless all members are present. The notice may be waived if all members of the governing body attend the special meeting or sign a waiver.
Va. Code § 15.2-1418