Material
(c) “Material” means matter of any kind or description, including, but not limited to, dredged material, solid waste, incinerator residue, garbage, sewage, sewage sludge, munitions, radiological, chemical, and biological warfare agents, radioactive materials, chemicals, biological and laboratory waste, wreck or discarded equipment, rock, sand, excavation debris, and industrial, municipal, agricultural, and other waste; but such term does not mean sewage from vessels within the meaning of section 1322 of this title . Oil within the meaning of section 1321 of this title shall be included only to the extent that such oil is taken on board a vessel or aircraft for the purpose of dumping.
Source
33 USC § 1402(c)
Scoping language
None identified, default scope is assumed to be the parent (chapter 27) of this section.