Section 309.204  Operating Permits; Existing Sources

a)         No person shall cause or allow the use or operation of any treatment works, pretreatment works or wastewater source without an operating permit issued by the Agency, except as provided in subsections (b), (c) and (d).

b)         No operating permit is required under this Section for any discharge:

1)         For which an NPDES permit is required; or

2)         For which pretreatment permit has been issued by the Agency, or for which an authorization to discharge has been issued by a POTW with an approved pretreatment program, pursuant to 35 Ill. Adm. Code 310.

c)         Operating permits are not required for treatment works and wastewater sources that are designed and intended to serve a single building and eventually treat or discharge less than an average of 1500 gallons per day 5 (5700 1/day) of domestic sewage and which will discharge, if at all, directly to a publicly owned or publicly regulated sanitary or combined sewer.

d)         Operating permits are not required for those pretreatment works or wastewater sources discharging to a sewer tributary to a treatment works which will not:

1)         Discharge toxic pollutants, as defined in Section 502(13) of the CWA, or pollutants which may interfere with the treatment process into the receiving treatment works or be subject to regulations promulgated under Section 307 of the Clean Water Act (CWA); or

2)         Discharge 15% or more of the total hydraulic flow received by the treatment works; or

3)         Discharge 15% or more of the total biological loading received by the treatment works as measured by the 5-day biochemical oxygen demand.

(Source:  Amended at 12 Ill. Reg. 2495, effective January 13, 1988)