Section NR 274.014 - New source performance standards(1) Except as provided in sub. (2), any new source subject to this subchapter may not discharge process wastewater pollutants to waters of the state.(2) During any calender month, a process wastewater impoundment may discharge from the overflow a volume equivalent to whatever is the greatest of the following:(a) The difference between the precipitation for that month which falls within the impoundment and the evaporation from the impoundment for that month; or(b) The difference between the mean precipitation for that month which falls within the impoundment and the mean evaporation for that month as established for the impoundment's location by the national climatic center, national oceanic and atmospheric administration, or as otherwise established if no monthly evaporation has been determined by the national climatic center.Wis. Admin. Code Department of Natural Resources NR 274.014
Cr. Register, March, 1991, No. 423, eff. 4-1-91.