1. a) The Agency may adopt criteria for the design, operation, and maintenance of treatment works, pretreatment works, sewers, and wastewater sources. These criteria may be revised periodically to reflect current engineering judgment and advances in the state of the art.

   BOARD NOTE: The Agency has adopted "Design Criteria for Pressure Sewage Systems" (35 Ill. Adm. Code 374), "Illinois Recommended Standards for Sewage Works" (35 Ill. Adm. Code 370), and "Requirements for Plans of Operation and Operation and Maintenance Manuals" (35 Ill. Adm. Code 371).

2. b) The Agency must adopt such procedures as are necessary to issue permits under this Subpart.

(Source: Amended at 47 Ill. Reg. 5017, effective March 23, 2023)