The minimum setback distance between each production line commercial wind power electricity generation unit (wind turbine tower) and all surrounding street and property lines, overhead utility lines, any dwellings, and any other generation units, aboveground transmission facilities, and separate meteorological facilities, shall be equal to no less than 1.5 times the proposed structure height plus the rotor radius. The property line setback requirement may be reduced by the Planning Board as an incident of special permit review when the Planning Board finds that the following circumstances apply:
(a)
The property line in question:
[1]
Separates two properties that are both part of a commercial wind-powered electricity generation facility; and
[2]
Either:
[a]
Both properties on each side of the boundary line in question will have electricity generation or transmission facilities constructed on them as part of the project under review; or
[b]
The owner of the property for which the reduced setback is sought executes and presents for recording a development easement satisfactory to the Town in which the reduced setback is consented to, and construction within, and use of, the easement area is appropriately restricted.