Other temporary signs. All other temporary signs, including but not limited to those which advertise or announce community, civic, educational, charitable, or religious projects, special events, political campaigns, and the like, and including, but not limited to, signs placed in anticipation of an upcoming election or during other similar political campaigns or events, shall meet the following requirements:
(a) Shall not exceed 12 square feet in area per side, except that one such sign per property may be no more than 20 square feet in sign area per side.
(b) Shall not be more than eight feet tall, measured from ground level to the top of the sign, except where one such sign may be attached to a building, existing sign structure, or other permanent structure.
(c) Where more than one such sign is placed on a single property, parcel, or lot, the signs shall be separated by a distance of no less than 10 feet.
(d) Shall not be erected sooner than 30 days prior to the scheduled date of the advertised event, election, or the like.
(e) Shall be removed within seven days after completion of the project, or after the date on which the advertised special event, election, or the like, has taken place or otherwise concluded.