Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 406 - MINE WASTE EFFLUENT AND WATER QUALITY STANDARDS
Subpart A - EFFLUENT STANDARDS
Section 406.109 - Effluent Standards for Coal Mine Discharges from Reclamation Areas
Universal Citation: 35 IL Admin Code ยง 406.109
Current through Register Vol. 48, No. 38, September 20, 2024
a) The effluent limitations at 35 Ill. Adm. Code 304 and Section 406.106 do not apply to mine discharges from reclamation areas.
b) A mine discharge effluent from a reclamation area must not exceed the following levels of contaminants:
|
Constituent |
Concentration |
|
Settleable solids |
0.5 ml/L |
|
pH (range) |
6-9 |
c) Notwithstanding subsection (b), any discharge or increase in discharge volume caused by precipitation within a 24-hour period greater than the 10-year, 24-hour precipitation event (or snowmelt of equivalent volume) is subject only to a pH limitation range of 6-9.
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