There are several terms that you should become familiar with, if you are not already. A waste is anything that is discarded, recycled, or stored for disposal. The waste may be solid, liquid, or gas. If you are still using it for its intended purpose, it is not a waste. Any gas that escapes during a process is a fugitive emission and is considered a waste.
Fugitive emissions are the most common source of perc wastes.
Acid and alkaline cleaning fluids are corrosive. Solvents are toxic. Many bleaches are reactive. The generator is responsible for the waste produced at a given site. If the generator wishes to prove that the wastes produced are not hazardous, the generator must arrange and pay for all testing.