Okla. Stat. tit. 27A, § 27A-2-3-507: Compliance schedules

Political subdivisions may, when compliance with environmental

standards would create excessive debt, enter into compliance

schedules with the Department of Environmental Quality to prioritize

compliance based on their greatest environmental or other public

health and safety needs. Excessive debt is indicated when the work

needed for compliance would require a capital cost or user charge

significantly beyond the per-household cost for similar sized

communities within the state. Penalties shall not be assessed if a

political subdivision complies with the schedule authorized by the

Department.