A. Except as provided in subsection B of this section, powered or mechanized equipment shall not be used directly over marked routes of underground facilities until the precise location of the underground facilities has been determined by the excavator, and then only after the facilities have been exposed and properly protected to avoid damage to them. If the precise location of the underground facilities cannot be determined by the excavator, the operator thereof shall be notified by the excavator so that the operator can determine the precise location of the underground facilities prior to continuing excavation or demolition.

B. The only exception to the prohibition of the use of powered or mechanized equipment directly over marked routes of underground facilities shall be for the removal of pavement or masonry, and then only to the depth of such pavement or masonry.