July 12, 2007 - The Illinois Pollution Control Board, on July 12, 2007, adopted for first notice proposed amendments to Illinois’ general use water quality standards for dissolved oxygen (DO) (35 Ill. Adm. Code 302.206). The Board’s first-notice amendments are based on aspects of both the proposal filed by the Illinois Association of Wastewater Agencies and the joint proposal filed by the Illinois Department of Natural Resources and the Illinois Environmental Protection Agency. The rulemaking proposal is entitled Proposed Amendments To Dissolved Oxygen Standard 35 Ill. Adm. Code 302.206, and is assigned docket number R04-25.
Board Sends to First Notice Proposed Amendments to General Use Water Quality
Standards for Dissolved OxygenThe Illinois Pollution Control Board, on July 12, 2007, adopted for first notice proposedamendments to Illinois’ general use water quality standards for dissolved oxygen (DO) (35 Ill.
Adm.
Code 302.206, and is assigned docket number R04-25.
The proposal divides the year into an “early
life stages” season (March through July) and an “other life stages” season (August throughFebruary).
The “early life stages” of fish (egg, embryo, larval, and recently-hatched juvenile) are
more sensitive to low DO concentrations than later juvenile and adult stages and thereforewarrant g...
Allowed
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