The following conditions shall require a buffer:
1. Buffers shall be required as shown on the Table of Buffer Requirements where different zoning classifications abut. A buffer required by the table shall be provided by the proposed development when it is located in a zoning district listed in the left-most column of the table and the development abuts a zoning district listed across the top of the table
2. Where a proposed development is located adjacent to a Planned Unit Development (PUD) District, a buffer shall be required based on the existing uses in the area adjacent to the proposed development or the most intense uses permitted by the PUD District if the area adjacent to the proposed development is vacant. The buffer required shall be based on the Table of Buffer Requirements using the zoning district in which the existing or proposed uses permitted in the PUD District are first permitted.