- a) An owner or operator must not place incompatible wastes or incompatible wastes and materials (see Appendix E to this Part for examples) in the same treatment process or equipment unless it complies with Section 725.117(b).
- b) An owner or operator must not place hazardous waste in unwashed treatment equipment that previously held an incompatible waste or material, unless it complies with Section 725.117(b).
(Source: Amended at 29 Ill. Reg. 6389, effective April 22, 2005)