Section 303.444  Salt Creek, Higgins Creek, West Branch of the DuPage River, Des Plaines River

The General Use chronic water quality standard for cyanide (STORET number 00718) contained in Section 302.208 does not apply to Salt Creek, Higgins Creek, the West Branch of the DuPage River, and the Des Plaines River in Cook County, Illinois.  Instead, for these waters the chronic cyanide standard is 10 μg/L.

(Source:  Added at 20 Ill. Reg. 3534, effective February 8, 1996)