Section 102.22. Definitions.

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

(1)  "Acute effects" means any effect resulting in death or immobilization. For temperature, the acute criteria of this subchapter are based on Upper Incipient Lethal Temperature (UILT) values that are not representative of immediate lethality.

(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 temperature" means the highest allowed water temperature for a calendar day, outside a mixing zone allowed in this subchapter.

(5)  "Great Lakes" means the open Wisconsin waters of Lake Superior, Lake Michigan, Green Bay and Chequamegon Bay, as well as adjoining open waters that exhibit characteristics of Lake Superior, Lake Michigan, Green Bay or Chequamegon Bay, or in other ways are determined by the department to be equivalent to these waters.

(6)  "Maximum weekly average temperature" means the highest allowed arithmetic mean of all daily maximum temperatures during a calendar week, outside mixing zone allowed in this subchapter.

(7)  "mgd" means million gallons per day.

(8)  "Sub-lethal effects" means effects resulting in inadequate gonad development, gamete production and viability, spawning or growth.

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