IPR SWTPs shall be designed to comply with the General Standards outlined in OAC 252:656-9, the Preliminary Treatment Standards outlined in OAC 252:656-13, and the Sludge Facility Standards outlined in OAC 252:656-19, along with any other construction standards outlined in OAC 252:656 that are directly related to the proposed IPR project.
Okla. Admin. Code § 252:628-5-4