The number of signs per building shall not exceed two identification wall signs per building wall facing a street or parking area, but not more than three per building. This message is limited to either the building name and street number or the building logo and street number. Alternatively, a building may be identified on a facade facing a street or parking area by one sign for each major tenant as determined by the landlord. The tenant must occupy space within the building. The Planning Board, pursuant to site plan review and approval of the sign program for the building, may permit such signs on more than one facade if the applicant demonstrates, and the Board finds, that such additional signage promotes a community interest in facilitating the identification of the building as seen by the traveling public from the right-of-way giving access to the site. Where the Board approves additional identification wall signs, or, in the alternative, signs for a major use, not more than one identification wall sign, or, in their alternative two major occupant signs, may be displayed on any one facade.