Notwithstanding section 104B of the Marine Protection, Research, and Sanctuaries Act of 1972 [33 U.S.C. 1414b], after December 31, 1981, the Administrator may issue emergency permits under title I of such Act [33 U.S.C. 1411 et seq.] for the dumping of industrial waste into ocean waters, or into waters described in such section 101(b) [33 U.S.C. 1411(b)], if the Administrator determines that there has been demonstrated to exist an emergency, requiring the dumping of such waste, which poses an unacceptable risk relating to human health and admits of no other feasible solution. As used herein, “emergency” refers to situations requiring action with a marked degree of urgency.