The new and revised water quality standards that the EPA is acting on today were the result of
the Illinois Pollution Control Board’s finalization of one of Illinois’ four rulemaking proceedings that, together, will update all aspects of Illinois’ water quality standards for the CAWS and LDPR.
2.
The North Branch of the Chicago River from its confluence with the North Shore
Channel to its confluence with the South Branch of the Chicago River and Chicago River. The EPA is disapproving Illinois’ removal in accordance with 40 CFR 131.5(a)(2) and (5) because...
Allowed
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