- a) Subpart D contains rules for the issuance of pretreatment permits by the Agency when the Agency is acting as the Control Authority. Subpart D does not apply if the POTW is the Control Authority.
- b) Industrial users with pretreatment permits are not required to have operating permits under Subpart B of 35 Ill. Adm. Code 309. However, sources may be required to have construction permits under Subpart B of 35 Ill. Adm. Code 309.
(Source: Amended at 47 Ill. Reg. 5083, effective March 23, 2023)