77 Ill. Adm. Code 890.1060
Special Wastes and Chemical Wastes
Section 890
Section 890.1060Â Special
Wastes and Chemical Wastes
a)        Acid Wastes. Acid and chemical waste piping and fittings,
including the trap, shall be of material that will not be damaged by the waste
being discharged.
b)        Neutralizing Device. Corrosive liquids, spent acids, or other
harmful chemicals shall not be discharged into the building sewer without first
being properly diluted or neutralized.