Notice shall be sent to all persons to whom real property is assessed within 300 feet of the subject property and to one occupant of all structures within 300 feet of the subject property, regardless of whether the property or occupant is located within the Township. If the name of the occupant is not known, the term "occupant" may be used. Notification is not required to more than one occupant of a structure; except if the structure contains more than one dwelling unit or spatial area owned or leased by different individuals, partnerships, businesses or organizations, one occupant of each unit or spatial area shall receive the notice. In the case of a single structure containing more than four dwelling units or other distinct spatial areas owned or leased by different individuals, partnerships, businesses or organizations, notice may be given to the manager or owner of the structure, who shall be requested to post the notice at the primary entrance to the structure.