Council hereby regulates certain processes of exterior paint removal and exterior abrasive cleaning as follows:
(a) All abrasive paint stripping and abrasive surface cleaning requires a permit, shrouding, tarping out to twenty feet or to the base of the shrouding, and advance notice to neighbors on all sides; and
(b) Any paint removal by any method where paint is being removed from more than twenty-five percent of any exterior wall surface of a structure requires a permit, tarping out to twenty feet and advance notice to neighbors on all sides.
(1974 Code § 115.01)