D.C. Mun. Regs. tit. 21, § 714
714.1 It shall be unlawful for any person using a District incinerator to dispose of solid wastes which do not conform to the requirements of this section.
714.2 Solid wastes shall be readily combustible.
714.3 Solid wastes shall not contain hazardous wastes, except as approved.
714.4 Solid wastes shall not contain heavy timbers, logs, stumps, or large quantities of ashes, dirt, or rubble.
714.5 Solid wastes shall not contain large quantities of rubbish with a high moisture content.
714.6 Bulky combustible materials shall not exceed three feet (3 ft.) in length or two feet by two feet (2 ft.x 2 ft.) in cross-section.
714.7 Brush and tree debris shall not exceed three feet (3 ft.) in length or four inches (4 in.) in diameter.
714.8 Timbers shall not exceed three feet (3 ft.) in length, or four inches by four inches (4 in. x 4 in.), or two inches by twelve inches (2 in. x 12 in.) in cross-section.
SOURCE: Regulation No. 71-21, approved June 29, 1971, 18 DCR 16 (July 12, 1971), 8 DCRR §8.3:608(a); as amended by §2(f) of the Solid Waste Control Act of 1977, D.C. Law 2-69, §8-3:608(a), 24 DCR 6800, 6805 (February 17, 1978).