Section NR 106.58 - Effluent limitations based on water quality models(1) At the time of permit application, a permittee may submit the results of scientifically defensible technical approaches, such as calibrated models and verified mathematical water quality models developed or adapted for a particular water body, simplified modeling approaches as outlined in "WATER QUALITY ASSESSMENT" (EPA-600/6-82-004), or other dynamic methods to be utilized in developing water quality-based effluent limitations.(2) Data used to support the analyses conducted under sub. (1) shall be representative of the long-term characteristics of the receiving water and shall be collected in a manner consistent with requirements of ch. NR 219.(3) The department shall review the results of the analyses conducted under sub. (1) on a case-by-case basis and shall determine the water quality-based effluent limitations necessary to ensure that the applicable water quality standards specified in ch. NR 102 are maintained.(4) Effluent limitations approved under this section are in lieu of the procedures in s. NR 106.55(5), (6), and (7), and are not modifications to the water quality criteria specified in ch. NR 102.Wis. Admin. Code Department of Natural Resources NR 106.58
CR 07-111: cr. Register September 2010 No. 657, eff. 10-1-10.