Buffer areas. A buffer area of 50 feet shall be provided at the perimeter of the open space residential development boundary running the full length of the perimeter of the tract. The Community Planning Commission may also require a 50 foot buffer area in the following locations: a) certain resource areas on or adjacent to the parcel, such as ponds, wetlands, streams and riverfront areas, rock outcrops, ledge, agricultural or recreational fields, and land held for conservation purposes; and b) existing public ways. No vegetation in a designated buffer area may be disturbed, destroyed or removed, except for normal maintenance of structures and landscapes approved as part of the project. The buffer zone shall remain in its natural state except that trees or shrubs may be added to enhance the appearance of the buffer zone. Driveways necessary for access and egress to and from the tract may cross such buffer areas. The Community Planning Commission may waive this buffer requirement in these locations when it determines that a smaller buffer (or no buffer) will suffice to accomplish the objectives set forth herein. However, under no circumstances shall the Community Planning Commission be able to waive the 50-foot buffer requirement in its entirety for locations at the perimeter of the open space residential development tract where it abuts residentially zoned and occupied properties. In these locations, the buffer requirement may only be reduced to a 30-foot buffer, and it may not be eliminated.