Re: Proposed amendments to dissolved oxygen standard (R04-25) STATE OF ILLDorothy Gunn, Clerk On Control Boardillinois Pollution Control BoardJames R.
Thompson Center
100 W.
Randolph St.
The current Illinois standard for
dissolved oxygen follows U.S.
Environmental Protection Agency guidelines and past scientific studies do not
support a lower standard.
At extremely low oxygen levels, fish kills result. Robert Sëhanzel made the following comments on behalf of the Illinois Chapter of the American Fisheries Society
regarding the proposal: “The illinois Chapter of the American Fisherie...
Allowed
Adobe Portable Document Format (.pdf) - application/pdf
... 
