The following cargoes are authorized for transfer to and from portable tanks or IBCs authorized by Sec. 98.33-5:
(a) Grade E combustible liquids that have a closed-cup flashpoint of 300 [deg]F or higher and that meet the definition of no DOT hazard class in 49 CFR part 173;
(b) Any environmentally hazardous substance, liquid N.O.S., Class 9, listed in table 1 of appendix A of 49 CFR 172.101, and any aqueous solution of an environmentally hazardous substance, solid, N.O.S., Class 9, listed in that table, that meets the definition of ``Hazardous substance'' in 49 CFR 171.8.
(c) Other cargoes subject to regulation under 49 CFR parts 171 through 176 when authorized in writing by the Commandant (CG-ENG). Requests for such authorization must be submitted as prescribed in Sec. 153.900(d)(1) of this chapter. [CGD 84-043, 55 FR 37412, Sept. 11, 1990, as amended by CGD 97-057, 62 FR 51046, Sept. 30, 1997; USCG-2011-0088, 78 FR 54788, Sept. 6, 2013]