Statutes, codes, and regulations
Oklahoma Administrative Code
Title 252 - DEPARTMENT OF ENVIRONMENTAL QUALITYChapter 606 - OKLAHOMA POLLUTANT DISCHARGE ELIMINATION SYSTEM (OPDES) STANDARDS
Subchapter 6 - Point Source Discharges
Section 252:606-6-55 - Wasteload allocations for the implementation of numerical criteria for toxic substances to protect the Fish and Wildlife Propagation beneficial use

Okla. Admin. Code § 252:606-6-55

Download
PDF
Current through Vol. 42, No. 8, January 2, 2025
Section 252:606-6-55 - Wasteload allocations for the implementation of numerical criteria for toxic substances to protect the Fish and Wildlife Propagation beneficial use

If a pollutant exhibits reasonable potential to exceed WQS, a water quality-based permit limit is required for that pollutant. Background levels used in calculating WLAA and WLAC are described in OAC 252:606-6-11 through 14. If a pollutant's background level alone exceeds a criterion, the WLA is set equal to that criterion.

(1)Streams. The following applies to streams:
(A)WLAA. Where Qe is expressed in cfs, Equation L-1 is used to determine WLAA. Where Qe is expressed in MGD, Equation L-2 is used.
(B)WLAC. Depending on the value of Q*, Equation L-3, L-4, or L-5 is used to determine WLAC.
(2)Lakes. Depending on whether the discharge conveyance is a pipe or canal, Equation L-6 or L-7 is used to determine WLAC, or WLAA, if an acute criterion applies, in the absence of a chronic criterion.

Okla. Admin. Code § 252:606-6-55

Adopted by Oklahoma Register, Volume 41, Issue 23, August 15, 2024, eff. 9/15/2024