The term hazardous materials/waste is defined in TxDOT Standard Specifications (Item 3.60 Hazardous Materials or Waste). Hazardous materials or waste include, but are not limited to, "explosives, compressed gas, flammable liquids, flammable solids, combustible liquids, oxidizers, poisons, radioactive materials, corrosives, etiologic agents and other materials classified as hazardous by 40 CFR 261, or applicable state and federal regulations." This definition is very broad and the requirements for handling, testing, removal and disposal may differ depending upon applicable federal, state and local laws and regulations.