§ 375.401

Ill. Admin. Code tit. 35, § 375.401

Variables in First Flush Determination

Effective Sep 26, 19848 Ill. Reg. 19436AUTHORITY: Implementing and authorized by Sections 4 and 12(a) of the Environmental Protection Act [415 ILCS 5/4 and 5/12.2].ENVIRONMENTAL PROTECTION AGENCY

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.

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

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