CLERK S OFFICERe: Proposed amendments to dissolved oxygen standard (R04-25) NOV 0320Dorothy Gunn, Clerk STATE OF ILLINOISIllinois Pollution Control Board POfl~tion Control 6oardJames R.
Thompson Center
100W.
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 Schanzel made the following comments on behalf of the Illinois Chapterof the American Fisheries Society
regarding the propo...
Allowed
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