According to the Agency, Commonwealth Edison’s NPDES permit
states that, “Water temperature at representative locations inthe main river shall not exceed the maximum limits identified inthe following table during more than one (1) percent of the hours(87.6 hrs.) in the 12—month period ending with any month.
Commonwealth
Edison’s current permit limits will allow them to recover 71.6hrs.
Cool water species have responded to avoidance
threshold temperatures and have mo...
Allowed
scantmp3
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