In addition to the setback provisions hereinafter set forth, no WECS shall be located within 4 1/2 miles of the boundary between the Town and Village of Mt. Morris. The minimum setback distance between wind power units and all surrounding property lines, overhead utility lines, dwellings, and other generation units, shall be equal to no less than 1.5 times the proposed structure height plus the rotor radius. No experimental, home-built, or prototype wind turbines shall be allowed without documentation substantiated by a professional engineer licensed to practice in New York State of their maximum probable blade throw distance in the event of failure and determination by the Planning Board of appropriate setback distances based on that documentation. However, in no case shall a WECS be located within 2,000 feet of a dwelling.