§375.401. Variables in First Flush Determination

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The intensity and duration of first flush are a function of certain variables including:

a)         Physical and hydraulic features of the sewer system and tributary watershed.

b)         Amount of sediment accumulated in the sewer system and on impervious surfaces of the watershed.

c)         Intensity and duration of the storm event causing the flushing.

(Source: Added at 8 Ill. Reg. 19436, effective September 26, 1984)

                    
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