Ill. Admin. Code tit. 35 § 406.109

Current through Register Vol. 48, No. 49, December 6, 2024

Section 406.109 - Effluent Standards for Coal Mine Discharges from Reclamation Areas

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.

Ill. Admin. Code tit. 35, § 406.109

Added in R84-29 at 11 Ill. Reg. 12899, effective July 27, 1987

Amended at 43 Ill. Reg. 11620, effective 9/25/2019