Wall signs subject to the sign regulations shall meet the following location requirements:
1. No wall sign shall cover wholly or partially any wall opening or project beyond the ends or tops of the wall to which it is attached.
2. No wall sign shall be erected on public right-of-way without approval of the Council.
3. There shall be allowed with respect to each building, subject to applicable zoning regulations, one permanent wall sign that is not larger than 64 square feet, or which does not occupy more than ten percent (10%) of the area of the wall to which it is affixed, whichever is smaller, for each of the building’s sides that parallel a public street.