(a) This part establishes the procedures for determining those surface coal mining and reclamation operations which are exempt from the Act and this chapter because the extraction of coal is an incidental part of Federal, State, or local government-financed highway or other construction.(b) This part exempts the extraction of coal which is incidental to government-financed construction from the requirements of the Act and this Chapter, if that extraction meets specified criteria which ensure that the construction is government-financed and that the extraction of coal is incidental to it.