Okla. Admin. Code § 252:740-11-5
Current through Vol. 41, No. 19, June 17, 2024
Section 252:740-11-5 - Reasonable potential equations(a) The maximum temperature difference on the mixing zone boundary must be computed using the following equation to determine if there is a reasonable potential to exceed 2.8 °C outside the mixing zone: T' = (Tf- Ta) / df. The dilution factor, df, must be that which yields the maximum temperature difference on the mixing zone boundary.(b) Substituting for df, the following equations shall be used for discharges to streams:T' = (1.94Q* (Tf- Ta)) / (1 + Q*) when Q* is less than or equal to 0.1823, orT' = (Tf- Ta) / (6.17 - 15.51Q*) when Q* is greater than 0.1823 and less than 0.3333, or T' = Tf- Ta when Q* is greater than or equal to 0.3333. Q* = Qe /Q u (the dilution capacity).(c) The following equations shall be used for discharges to lakes: T' = (D(Tf- Ta)) / 20.15 when is greater than or equal to 3 feet. D is pipe diameter, and T' = (W1/2(Tf- Ta)) / 4.2 when W is greater than or equal to 3 feet. W is canal width.(d) There is a reasonable potential that the effluent may cause a criterion exceedance at the maximum concentration on the mixing zone boundary if T' > 2.8C.Okla. Admin. Code § 252:740-11-5
Adopted by Oklahoma Register, Volume 40, Issue 6, December 1, 2022, eff. 10/25/2022Adopted by Oklahoma Register, Volume 40, Issue 24, September 1, 2023, eff. 9/15/2023