Wis. Admin. Code NR § 106.52

Current through May 28, 2024

Section NR 106.52 - Definitions

In this subchapter, the following definitions are applicable to terms used:

(1) "Ambient temperature" means the typical existing temperature of a surface water outside the direct influence of any point source discharge, which may include daily and seasonal changes.

(2) "cfs" means cubic feet per second, usually pertaining to stream or effluent flow.

(3) "Cold shock" means exposure of aquatic organisms to a rapid decrease in temperature and a sustained exposure to low temperature that induces abnormal behavioral or physiological performance and may lead to death.

(4) "Daily maximum effluent temperature" means the highest temperature measured in a calendar day.

(5) "Daily maximum effluent temperature limitation" means the daily maximum effluent temperature limitation established in a permit.

(6) "mgd" means million gallons per day, usually pertaining to stream or effluent flow.

(7) "New facility" means any new point source facility or new point source discharge that commences operation after October 1, 2010.

(8) "Seven-day rolling average effluent flow" means the arithmetic average of the effluent flow measured on a particular day and the 6 preceding days within that calendar month.

(9) "Water quality standards" means applicable water quality standards set forth in chs. NR 102 to 104, or any federally promulgated water quality standards applicable to surface waters of the state.

(10) "Weekly average effluent temperature" means the arithmetic mean of all daily maximum effluent temperature values recorded in a calendar week, Sunday through Saturday.

(11) "Weekly average effluent temperature limitation" means the maximum allowable weekly average temperature determined as the arithmetic mean of all daily maximum effluent temperature values recorded in a calendar week, Sunday through Saturday.

(12) "WPDES" or "WPDES permit" means Wisconsin pollutant discharge elimination system permit issued under ch. 283, Stats., but does not include storm water permits issued under s. 283.35, Stats.

(13) "WQBEL" means water quality-based effluent limitation.

Wis. Admin. Code Department of Natural Resources § NR 106.52

CR 07-111: cr. Register September 2010 No. 657, eff. 10-1-10.