NR 273.035 Pretreatment standards for existing sources. NR 273.036 Pretreatment standards for new sources. Subchapter IV — Precious Metals
NR 273.04 Applicability; description of the precious metals subcategory. NR 273.041 Discharge prohibitions. NR 273.042 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.043 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.044 New source performance standards. NR 273.045 Pretreatment standards for existing sources. NR 273.046 Pretreatment standards for new sources. Subchapter V — Refractory Metals
NR 273.05 Applicability; description of the refractory metals subcategory. NR 273.051 Discharge prohibitions. NR 273.052 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.053 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.054 New source performance standards. NR 273.055 Pretreatment standards for existing sources. NR 273.056 Pretreatment standards for new sources. Subchapter VI — Titanium
NR 273.06 Applicability; description of the titanium subcategory. NR 273.061 Discharge prohibitions. NR 273.062 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.063 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.064 New source performance standards. NR 273.065 Pretreatment standards for existing sources. NR 273.066 Pretreatment standards for new sources. Subchapter VII — Uranium
NR 273.07 Applicability; description of the uranium subcategory. NR 273.071 Discharge prohibitions. NR 273.072 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.073 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.074 New source performance standards. NR 273.076 Pretreatment standards for new sources. Subchapter VIII — Zinc
NR 273.08 Applicability; description of the zinc subcategory. NR 273.081 Discharge prohibitions. NR 273.082 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.083 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.084 New source performance standards. NR 273.086 Pretreatment standards for new sources. Subchapter IX — Zirconium-Hafnium
NR 273.09 Applicability; description of the zirconium-hafnium subcategory. NR 273.091 Discharge prohibitions. NR 273.092 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.093 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.094 New source performance standards. NR 273.095 Pretreatment standards for existing sources. NR 273.096 Pretreatment standards for new sources. Subchapter X — Metal Powders
NR 273.10 Applicability; description of the metal powders subcategory. NR 273.101 Discharge prohibitions. NR 273.102 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 273.103 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 273.104 New source performance standards. NR 273.105 Pretreatment standards for existing sources. NR 273.106 Pretreatment standards for new sources. NR 273.001NR 273.001 Purpose. The purpose of this chapter is to establish effluent limitations, new source performance standards, and pretreatment standards for the discharge of process wastewater pollutants from the nonferrous metals forming and metal powders point source category and its subcategories. NR 273.001 HistoryHistory: Cr. Register, September, 1990, No. 417, eff. 10-1-90. NR 273.002(1)(1) Except as provided in sub. (2), this chapter applies to discharges of pollutants to waters of the state and to publicly owned treatment works from the forming of nonferrous metals and nonferrous metal alloys and the associated ancillary operations. NR 273.002(2)(b)(b) Cadmium, chromium, gallium, germanium, indium, lithium, manganese, neodynum, or praseodymium. NR 273.002(3)(3) This chapter applies to discharges to waters of the state and the introduction of pollutants into publicly owned treatment works from the mechanical production of metal powders from iron, copper, aluminum, nonferrous metals, and their alloys, the forming of parts from metal powders, and the associated ancillary operations. This chapter does not apply to the production of metal powders by chemical means such as precipitation. If the metal powder is produced as the final step in refining metal, the regulations for nonferrous metals manufacturing, ch. NR 274, apply. NR 273.002(4)(4) This chapter applies to any chemical of electrochemical treatment applied to the surface of the metal whenever these surface treatments are performed at the plant site where the metals are formed. If surface treatment is performed at a site other than where the metals are formed, regulations for electroplating, ch. NR 260, or metal finishing, ch. NR 261, apply. NR 273.002(5)(5) This chapter applies to casting when the casting is performed as an integral part of the metal forming process and takes place at the site where the metals are formed. When the casting does not take place where the metals are formed, the regulations for metal molding and casting, ch. NR 256, apply. NR 273.002 HistoryHistory: Cr. Register, September, 1990, No. 417, eff. 10-1-90. NR 273.003NR 273.003 General definitions. In addition to the definitions set forth in ss. NR 205.03, 205.04, and 211.03, the following definitions apply to the terms used in this chapter: NR 273.003(1)(1) “Alkaline cleaning” means the removal of lard, oil, and other compounds from a metal surface by a solution bath, usually detergent, followed by a rinse or multiple stage rinsing. NR 273.003(2)(2) “Aluminum alloy” means an alloy in which aluminum is the major constituent in percent by weight. NR 273.003(3)(3) “Ancillary operation” means an operation performed as an integral part of the forming, such as casting for subsequent forming, heat treatment, surface treatment, alkaline cleaning, solvent degreasing, product testing, surface coating, sawing, grinding, tumbling, burnishing, and wet air pollution control. NR 273.003(4)(4) “Atomization” means the process by which a stream of water or gas impinges upon a molten metal stream, breaking it into droplets which solidify as powder particles. NR 273.003(5)(5) “Beryllium alloy” means an alloy in which beryllium is present at 0.1% or greater. NR 273.003(6)(6) “Burnishing” means a surface finishing process in which minute surface irregularities are displaced rather than removed. NR 273.003(7)(7) “Casting” means pouring molten metal into a mold to produce an object of the desired shape. NR 273.003(8)(8) “Cladding” means the art of producing a composite metal containing 2 or more layers which have been metallurgically bonded together by roll bonding, solder application, or explosion bonding. NR 273.003(9)(9) “Contact cooling water” means wastewater which contacts the metal workpiece or the raw materials used in forming metals for the purpose of removing heat from the metal. NR 273.003(10)(10) “Continuous casting” means the production of sheet, rod, or other long shapes by solidifying the metal while it is being poured through an open ended mold. NR 273.003(11)(11) “Copper alloy” means an alloy in which copper is the major constituent by weight, except any copper-precious metal alloy containing 30% by weight or greater precious metal is a precious metal alloy. NR 273.003(12)(12) “Degreasing” means the removal of oils and greases from the surface of the metal workpiece by detergents as in alkaline cleaning or by the use of solvents. NR 273.003(13)(13) “Direct chill casting” means an operation in which molten nonferrous metal is poured into a water cooled mold, contact cooling water is sprayed on the metal as it is dropped into the mold, and the metal ingot falls into a water bath at the end of the casting process. NR 273.003(14)(14) “Forming” means a set of manufacturing operations in which metals and alloys are made into semifinished products by hot or cold working, such as hot and cold rolling, extruding, forging, drawing, swaging, cladding, and tube reducing. NR 273.003(15)(15) “Drawing” means the process of pulling a metal through dies or succession of dies to reduce the metal’s diameter or alter its cross sectional shape. NR 273.003(16)(16) “Dye penetrant testing” means a nondestructive method for finding discontinuities that are open to the surface of the metal in which a dye is applied to the surface of the metal and the excess is rinsed off so that the dye which penetrates the surface is not rinsed off and thus marks the discontinuities. NR 273.003(17)(17) “Emulsion” means a stable dispersion of 2 immiscible liquids, usually oil and water. NR 273.003(18)(18) “Electrocoating” means the electrodeposition of a metallic or nonmetallic coating onto the surface of a workpiece. NR 273.003(19)(19) “Existing source” means any point source from which pollutants may be discharged either directly into the waters of the state or into a POTW, except a new source as defined in sub. (30). NR 273.003(20)(20) “Extrusion” means the application of pressure to a billet of metal which forces the metal to flow through a die orifice.
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Chs. NR 200-299; Environmental Protection – Wisconsin Pollutant Discharge Elimination System
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