Section 303.441  Secondary Contact Waters

The following are designated as secondary contact and indigenous aquatic life waters and must meet the water quality standards of 35 Ill. Adm. Code 302.Subpart D:

a)         The Chicago Sanitary and Ship Canal;

b)         The Calumet-Sag Channel;

c)         The Little Calumet River from its junction with the Grand Calumet River to the Calumet-Sag Channel;

d)         The Grand Calumet River;

e)         The Calumet River, except the 6.8 mile segment extending from the O'Brien Locks and Dam to Lake Michigan;

f)          Lake Calumet;

g)         The South Branch of the Chicago River;

h)         The North Branch of the Chicago River from its confluence with the North Shore Channel to its confluence with the South Branch;

i)          The Des Plaines River from its confluence with the Chicago Sanitary and Ship Canal to the Interstate 55 bridge; and

j)          The North Shore Channel, excluding the segment extending from the North Side Sewage Treatment Works to Lake Michigan.  The dissolved oxygen in said Channel shall be not less than 5 mg/1 during 16 hours of any 24 hour period, nor less than 4 mg/1 at any time.

(Source:  Amended at 12 Ill. Reg. 9917, effective May 27, 1988)