Okla. Admin. Code § 252:690-1-7
DEQ will establish TMDLs for impaired waterbodies, including wasteload allocations for point sources and load allocations for nonpoint sources, in accordance with procedures described in the CPP. Development of TMDLs may be coordinated with other state environmental agencies and natural resource agencies. The WQMP shall be updated in accordance with the planning, approval and public participation procedures described in the CPP whenever a facility proposes a new discharge, seeks to increase the permitted discharge flow rate or pollutant loading, relocate a discharge point, or when a TMDL is adopted. DEQ will develop discharge permit limits that are consistent with any WLA specified in the WQMP. Interim limits may be granted if a WLA has not been included in the plan, along with a re-opener provision to incorporate any additional requirements resulting from a subsequent WLA.
Okla. Admin. Code § 252:690-1-7