Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System
Chapter NR 290 - Steam Electric Power Generating
Section NR 290.03 - Definitions
Current through August 26, 2024
The following definitions are applicable to terms used in this chapter. Definitions of other terms and meanings of abbreviations are set forth in ss. NR 205.03, 205.04 and 211.03, and the Development Document for Effluent Limitations Guidelines and Standards for the Steam Electric Point Source Category, EPA-440/1-82/029, November 1982, pages 518-545.
Note: Copies of this document are available for inspection at the office of the department of natural resources, 101 S. Webster, Madison; the secretary of state's office; and the office of the legislative reference bureau, and may be obtained for personal use from the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20460.
(1) "Ash transport water" means water used in the hydraulic transport of either fly or bottom ash.
(2) "Average concentration" as it relates to chlorine discharge means the average of analyses made over a single period of chlorine release which does not exceed 2 hours.
(3) "Bottom ash" means the ash that drops out of the furnace gas stream in the furnace and in the economizer sections. Economizer ash is included when it is collected with bottom ash.
(4) "Chemical metal cleaning waste" means any wastewater resulting from the cleaning of any metal process equipment with chemical compounds, including, but not limited to, boiler tube cleaning.
(5) "Coal pile runoff" means the rainfall runoff from or through any coal storage pile.
(6) "Fly ash" means the ash that is carried out of the furnace by the gas stream and collected by mechanical collectors, electrostatic precipitators, fabric filters, or any combination of the 3. Economizer ash is included when it is collected with fly ash.
(7) "Free available chlorine" or "FAC" means the value obtained using the amperometric titration method for free available chlorine described in "Standard Methods for the Examination of Water and Wastewater", page 286 (15th edition, 1980).
Note: Copies of the above document are available for inspection at the office of the department of natural resources, 101 S. Webster, Madison; the secretary of state's office, and the office of the legislative reference bureau, and may be obtained for personal use from the American Public Health Association, Inc., 1015 Fifteenth St. NW, Washington, D.C. 20005.
(8) "Low volume waste sources" means, taken collectively as if from one source, wastewater from all sources except those for which specific limitations are otherwise established in s. NR 290.12. Low volume waste sources include wastewaters from wet scrubber air pollution control systems, ion exchange water treatment systems, water treatment evaporator blowdown, laboratory and sampling streams, boiler blowdown, floor drainage, cooling tower basin cleaning wastes and recirculating house service water systems. Sanitary and air conditioning wastes are specifically not included in this definition.
(9) "Metal cleaning wastes" means any wastewater resulting from the cleaning (with or without chemical cleaning compounds) of any metal process equipment including boiler tube cleaning, boiler fireside cleaning, and air preheater cleaning.
(10) "New source" for indirect dischargers means any building, structure, facility, or installation from which there is or may be a discharge of pollutants, the construction of which commenced on or after October 14, 1980; or for direct dischargers means any point source the construction of which commenced after November 19, 1982.
(11) "No detectable amount" means any amount less than or equal to the level of pollutant detectability listed in 40 CFR Part 136.
(12) "Nonchemical metal cleaning waste" means any wastewater resulting from the cleaning of any metal process equipment without chemical compounds.
(13) "Once through cooling water" means water passed through the main cooling condensers in one or 2 passes for the purpose of removing waste heat.
(14) "126 priority pollutants" means those pollutants listed in s. NR 215.03.
(15) "Recirculated cooling water" means water which is passed through the main condensers for the purpose of removing waste heat, passed through a cooling device for the purpose of removing such heat from the water and then passed again, except for blowdown, through the main condenser.
(16) "10 year, 24 hour rainfall event" means a rainfall event with a probable recurrence interval of once in 10 years. Probable intensities of 10 year, 24 hour rainfall events are specified in s. NR 205.05.
(17) "Total residual chlorine" or "TRC" or "total residual oxidants for intake water with bromides" means the value obtained using the amperometric method for total residual chlorine described in ch. NR 219.
