Okla. Admin. Code § 252:517-3-1 : Department of Environmental Quality — Disposal of Coal Combustion Residuals from Electric Utilities — Permit Provisions and Applications — GENERAL PROVISIONS —3-1 - Duration of permit

(a) Life of site. Permits shall be issued for the life of the CCR unit, subject to the limitations of (b) of this Section.
(b) Commencement of construction and operation. DEQ may specify timelines within permits for commencement of construction and operation of new CCR units.
(c) Cessation of operations. If a permitted active CCR unit ceases to accept waste for 30 days or more without prior notice to the DEQ, the facility is deemed to be in the process of final closure.
(d) Suspended operations. Development or operations of a CCR unit may be suspended. To do so, the owner/operator must:
(1) provide prior written notice to the DEQ of the intent to suspend development or operations;
(2) renew such notice annually;
(3) if site development or operations remain suspended for more than one year, perform closure and post-closure activities in accordance with the approved closure and post-closure plans, and Subchapter 15 of this Chapter; and
(4) post full financial assurance in accordance with Subchapter 17 of this Chapter and the approved cost estimates.
(e) Resuming operations. If facility operations cease pursuant to (c) or (d) of this Section, then prior to resuming such operations, the permit must be modified if, in the opinion of the DEQ, the permit does not comply with all current laws and regulations.

Okla. Admin. Code § 252:517-3-1

Adopted by Oklahoma Register, Volume 33, Issue 24, September 1, 2016, eff. 9/15/2016