(a) When transported by barge, unslaked lime (calcium oxide) must be carried in an unmanned, all steel, double-hulled barge equipped with weathertight hatches or covers. The barge must not carry any other cargo while unslaked lime is on board.
(b) The shipping paper requirements in Sec. 148.60 of this part and the dangerous cargo manifest requirements in Sec. 148.70 of this part do not apply to the transportation of unslaked lime under paragraph (a) of this section.