Ill. Admin. Code tit. 35, § 620.440 - Groundwater Quality Standards for Class IV: Other Groundwater
a) Except as
provided in subsection (b) or (c), Class IV: Other Groundwater standards are
equal to the existing concentrations of constituents in groundwater.
b) For groundwater within a zone of
attenuation as provided in 35 Ill. Adm. Code 811 and 814, the standards
specified in Section
620.420
must not be exceeded, except for concentrations of contaminants within leachate
released from a permitted unit.
c)
For groundwater within a previously mined area, the standards set forth in
Section
620.420
must not be exceeded, except for concentrations of TDS, chloride, iron,
manganese, sulfates, pH, 1,3-dinitrobenzene, 2,4-dinitrotoluene,
2,6-dinitrotoluene, HMX (high melting explosive, octogen), nitrobenzene, RDX
(royal demolition explosive, cyclonite), 1,3,5-trinitrobenzene, or
2,4,6-trinitrotoluene (TNT). For concentrations of TDS, chloride, iron,
manganese, sulfates, pH, 1,3-dinitrobenzene, 2,4-dinitrotoluene,
2,6-dinitrotoluene, HMX, nitrobenzene, RDX, 1,3,5-trinitrobenzene, or
2,4,6-trinitrotoluene (TNT), the standards are the existing
concentrations.
Notes
Amended at 36 Ill. Reg. 15206, effective October 5, 2012
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