1. a) Practices that may stop or minimize water from coming into contact with disturbed areas (Section 406.205);
2. b) Retention and control of waters exposed to disturbed materials (Section 406.206);
3. c) Control and treatment of waters discharged from the site (Section 406.207);
4. d) Unconventional practices (Section 406.208).

Good mining practices are designed to minimize discharge of total dissolved solids, chloride, sulfate, iron, and manganese. The Agency must consider whether the operator is using the following good mining practices:

(Source: Amended at 43 Ill. Reg. 11620, effective September 25, 2019)