The height limitations of this chapter shall not apply to:
A. 
Chimneys, flues, spires or belfries.
B. 
Elevator or stair bulkheads, roof water tanks or cooling towers (including enclosures), provided that such structures, in the aggregate, do not occupy more than 10% of the roof area.
C. 
Flagpoles, radio or television antennas, masts or aerials located on a building and extending not more than 20 feet above the roof of such building.
D. 
A utility-scale wind energy conversion system may exceed the height limit up to a height of 500 feet.
[Added 3-6-2008 by L.L. No. 3-2008]
E. 
A small-scale wind energy conversion system may exceed the height limit up to a height of 150 feet.
[Added 3-6-2008 by L.L. No. 3-2008]