Oklahoma Administrative Code
Title 252 - Department of Environmental Quality
Chapter 690 - Water Quality Standards Implementation
Subchapter 3 - Point Source Discharges
Section 252:690-3-75 - Wasteload allocations for implementation of human health and raw water criteria for toxic substances to protect the Public and Private Water Supply beneficial use

If either Cd(FFW) or Cd(RAW) exceeds its associated criterion, a water quality-based permit limit is required for that substance. Background levels used in calculating WLAFFW and WLARAW are described in OAC 252:690-3-10 through 3-13 and 3-15. If a pollutant's background level exceeds either CFFW or CRAW, the affected WLA is set equal to that criterion. Equations G-2 and G-3 are used to calculate WLAFFW and WLARAW, respectively. For discharges to a stream located less than five stream miles upstream of a public water supply intake and for discharges to a lake located within one mile of a public water supply intake, WLAFFW is set equal to CFFW for any pollutant detected in the discharge.

Added at 19 Ok Reg 1721, eff 6-13-02; Amended at 26 Ok Reg 1962, eff 7-1-09