Section 303.240  Chicago Area Waterway System and Brandon Pool Aquatic Life Use B Waters

a)         Waters designated as Chicago Area Waterway System and Brandon Pool Aquatic Life Use B Waters are capable of maintaining, and must have quality sufficient to protect, aquatic life populations predominated by individuals of tolerant types that are adaptive to unique physical conditions and modifications of long duration, including artificially constructed channels consisting of vertical sheet-pile, concrete and rip-rap walls designed to support commercial navigation, flood control, and drainage functions in deep-draft, steep-walled shipping channels.  The aquatic life may include fish species, such as common carp, golden shiner, bluntnose minnow, yellow bullhead, and green sunfish.

b)         Waters designated as Chicago Area Waterway System and Brandon Pool Aquatic Life Use B Waters are not capable of attaining an aquatic life use consistent with the goal of section 101(a)(2) of the Clean Water Act (33 U.S.C. 1251(a)(2)).

c)         The following waters are designated as Chicago Area Waterway System and Brandon Pool Aquatic Life Use B Waters and must meet the water quality standards of 35 Ill. Adm. Code 302 Subpart D:

1)         Chicago Sanitary and Ship Canal; and

2)         Lower Des Plaines River from its confluence with Chicago Sanitary and Ship Canal to the Brandon Road Lock and Dam (Brandon Pool).

(Source:  Amended at 47 Ill. Reg. 4575, effective March 23, 2023)