Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 406 - MINE WASTE EFFLUENT AND WATER QUALITY STANDARDS
Subpart A - EFFLUENT STANDARDS
Section 406.106 - Effluent Standards for Mine Discharges
Universal Citation: 35 IL Admin Code ยง 406.106
Current through Register Vol. 48, No. 38, September 20, 2024
a) The effluent limitations in 35 Ill. Adm. Code 304 do not apply to mine discharges or non-point source mine discharges.
b) Except as provided in Sections 406.109 and 406.110, a mine discharge effluent must not exceed the following levels:
|
Constituent |
Concentration |
|
Acidity |
(total acidity must not exceed total alkalinity) |
|
Iron (total) |
3.5 mg/L |
|
Lead (total) |
1 mg/L |
|
Ammonia Nitrogen (as N) |
5 mg/L |
|
pH (range) |
6-9 |
|
Zinc (total) |
5 mg/L |
|
Fluoride (total) |
15 mg/L |
|
Total suspended solids |
35 mg/L |
|
Manganese |
2.0 mg/L |
1) The ammonia
nitrogen standard applies only to discharges from facilities using ammonia in
wastewater treatment.
2) The
manganese effluent limitation applies only to discharges from facilities where
chemical addition is required to meet the iron or pH effluent limitations. The
upper limit of pH must be 10 for any facility unable to comply with the
manganese limit at pH 9. The manganese standard is not applicable to mine
discharges associated with areas where no active mining, processing, or refuse
disposal has taken place since May 13, 1976.
c) New source coal mines are subject to a total iron limitation of 3.0 mg/L in addition to the requirements of subsection (b).
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