SEP 22009September 23, 2009 srirE.0F rasrdcot’Marie E.
Tipsord
Hearing Officer cThQ,VIllinois Pollution Control Board100 West Randolph Suite 11-500Chicago, Illinois 60601Re: R2008-009, In The Matter of: Water Quality Standards and Effluent Limitations forthe Chicago Area Waterway System and the Lower Des Plaines River: ProposedAmendments to 35 III.
First, the concept of chlorine consumption must be considered.
Stepan’s wastewater averages about 2.1 mg/L of ammonia-N, which is a chlorine consumer,
and it can range as...
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