Home › CFR › Title 40 › Part 24140 CFR Part 241 — Solid Wastes Used as Fuels or Ingredients in Combustion UnitsSubpart A — General§ 241.1— Purpose.§ 241.2— Definitions.Subpart B — Identification of Non-Hazardous Secondary Materials That Are Solid Wastes When Used as Fuels or Ingredients in Combustion Units§ 241.3— Standards and procedures for identification of non-hazardous secondary materials that are solid wastes when used as fuels or ingredients in combustion units.§ 241.4— Non-Waste Determinations for Specific Non-Hazardous Secondary Materials When Used as a Fuel.