Section 310.505  Reissuance or Modification of Permits

The Agency must modify or reissue a POTW's NPDES permit to accomplish any of the following:

a)         Put the POTW on a compliance schedule for the development of a POTW pretreatment program if the addition of pollutants into a POTW by an industrial user or combination of industrial users presents a substantial hazard to the functioning of the treatment works, quality of the receiving waters, human health, or the environment;

b)         Incorporate an approved POTW pretreatment program in the POTW permit;

c)         Incorporate a compliance schedule for the development of a POTW pretreatment program in the POTW permit; or

d)         Incorporate the removal credits established under Subpart C in the POTW permit.

BOARD NOTE:  Derived from 40 CFR 403.8(e) (2003).

(Source:  Amended at 47 Ill. Reg. 5083, effective March 23, 2023)