OAC 252:690-3-48
WLAT [REVOKED]
Cite as Okla. Admin. Code § 252:690-3-48
If reasonable potential is demonstrated, WLAT is required.
(1) Streams. Except for streams designated as trout fisheries, Equation E-1, E-2 or E-3 is used
to determine WLAT, depending on the value of Q*. WLAT for trout fisheries is 20̊C.
(2) Lakes. Depending on whether the discharge conveyance is a pipe or canal, Equation E-4
or E-5 is used to determine WLAT.
252-690-3-49. LTAT [REVOKED]
LTAT is calculated using a 50% probability basis according to Equation E-6. A CV value of
0.6 is assumed unless a CV was determined from effluent data in accordance with OAC 252:690-
3-9(b).