Transition Requirements. There 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 Edison Township, a buffer area at least ten (10) feet in width plus five (5) feet additional width for each ten (10) foot interval or fraction thereof of the height of the principal building which exceeds fifteen (15) feet in height. The buffer area shall be landscaped and fencing provided as required to provide appropriate screening of the operations of the lot from adjoining residential districts. Landscaping shall provide a visual screen of no less than six (6) feet in height, except the Board may waive this requirement if topography or existing mature plant growth provide the visual screen stated above.