For example, solutions that contain mercury at levels above 0.2 ppm are hazardous waste. These levels are very low, so if a waste contains one or more of these components it should be considered to be a hazardous waste unless analysis following the TCLP method shows that its concentration is below the regulatory limit. It is applicable to many surplus chemicals that are disposed of by research laboratories. Some examples are nickel tetracarbonyl, phosphine, and osmium tetroxide. Like the P list, this is applicable to many surplus chemicals that are disposed of by research laboratories.
Some examples are aniline, benzene, and acetone.
I wastes are wastes which are regulated by the Texas Natural Resource Conservation Commission. They are not considered hazardous by the EPA definition, but must be disposed of at a permitted landfill due to Texas regulations. I definition are soils contaminated with petroleum hydrocarbons, sandblasting sand with leachable lead concentrations between 1.5 and 5.0 ppm, used oil, and solids that when mixed with an equal weight of water form a corrosive solution. Contaminated is defined as the presence or the reasonably anticipated presence of blood, body fluids, or other infectious materials. The use and disposal of by-product material are regulated by the U.S. NRC and usually require a license.