Transition Requirement. A buffer shall be established along the line of any side or rear lot that is contiguous to any residential district (unless the side or rear lot line coincides with any major street as shown on the adopted Master Plan of the Township of Warren) with a width of at least 25 feet in width plus five feet additional width for each ten-foot interval, or fraction thereof, of the height of the principal building. The buffer area shall be landscaped and fencing provided as required to provide appropriate screening of the operations of the lot from adjoining residential zone.