Chapter NR 253

Chapter NR 253

COPPER FORMING

NR 253.01   Purpose.

NR 253.02   Applicability.

NR 253.03   General definitions.

NR 253.04   Monitoring and reporting requirements.

NR 253.05   Compliance dates.

Subchapter I — The Copper Forming Subcategory

NR 253.10   Applicability; description of the copper forming subcategory.

NR 253.11   Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

NR 253.12   Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

NR 253.13   New source performance standards.

NR 253.14   Pretreatment standards for existing sources.

NR 253.15   Pretreatment standards for new sources.

NR 253.01 NR 253.01 Purpose. The purpose of this chapter is to establish effluent limitations, standards of performance, and pretreatment standards for discharges of process wastes from the copper forming point source category and its subcategories.

NR 253.01 History History: Cr. Register, May, 1989, No. 401, eff. 6-1-89.

NR 253.02 NR 253.02 Applicability. This chapter applies to discharges resulting from hot rolling, cold rolling, drawing, extrusion, and forging of copper and copper alloys and the associated ancillary operations. This chapter does not apply to the forming of precious metals, which is regulated by 40 CFR 471, or the casting of copper or copper alloys, which is regulated by ch. NR 256.

NR 253.02 History History: Cr. Register, May, 1989, No. 401, eff. 6-1-89.

NR 253.03 NR 253.03 General definitions. The following definitions are applicable to the terms used in this chapter. Definitions of other terms and abbreviations are set forth in ss. NR 205.03, 205.04 and 211.03.

NR 253.03(1) (1) “Alkaline cleaning bath” means a bath consisting of an alkaline cleaning solution through which a workpiece is processed.

NR 253.03(2) (2) “Alkaline cleaning rinse” means a rinse following an alkaline cleaning bath through which a workpiece is processed. A rinse consisting of a series of rinse tanks is considered as a single rinse.

NR 253.03(3) (3) “Alkaline cleaning rinse for forged parts” means a rinse following an alkaline cleaning bath through which a forged part is processed. A rinse consisting of a series of rinse tanks is considered as a single rinse.

NR 253.03(4) (4) “Ancillary operation” means an operation, such as surface and heat treatment, hydrotesting, sawing, and surface coating, associated with a primary forming operation.

NR 253.03(5) (5) “Annealing with oil” means the use of oil to quench a workpiece as it passes from an annealing furnace.

NR 253.03(6) (6) “Annealing with water” means the use of a water spray or bath, of which water is the major constituent, to quench a workpiece as it passes from an annealing furnace.

NR 253.03(7) (7) “Beryllium copper alloy” means any copper alloy that is alloyed to contain 0.10% or greater beryllium.

NR 253.03(8) (8) “Cold rolling” means the process of rolling a workpiece below the recrystallization temperature of the copper or copper alloy.

NR 253.03(9) (9) “Drawing” means pulling the workpiece through a die or succession of dies to reduce the diameter or alter its shape.

NR 253.03(10) (10) “Existing source” means any point source, except for a new source as defined in sub. (16), from which pollutants may be discharged either into waters of the state or into a publicly owned treatment works.

NR 253.03(11) (11) “Extrusion” means the application of pressure to a copper workpiece, forcing the copper to flow through a die orifice.

NR 253.03(12) (12) “Extrusion heat treatment” means the spray application of water to a workpiece for the purpose of heat treatment immediately following extrusion.

NR 253.03(13) (13) “Hot rolling” means the process of rolling a workpiece above the recrystallization temperature of the copper or copper alloy.

NR 253.03(14) (14) “Heat treatment” means the application of heat to or the removal of heat from a workpiece to change the physical properties of the metal.

NR 253.03(15) (15) “Miscellaneous waste stream” means hydrotesting, sawing, surface milling, and maintenance wastestreams when they are related to the forming of copper.

NR 253.03(16) (16) “New source”, as defined for new source performance standards and pretreatment standards for new sources, means any point source for which construction commenced after November 12, 1982 and from which pollutants are or may be discharged directly to the waters of the state or to a publicly owned treatment works.

NR 253.03(17) (17) “Off kilogram” and “off pound” mean the mass of copper or copper alloy removed from a forming or ancillary operation at the end of a process cycle for transfer to a different machine or process.

NR 253.03(18) (18) “Pickling bath” means a chemical bath, other than an alkaline cleaning bath, through which a workpiece is processed.

NR 253.03(19) (19) “Pickling fume scrubber” means an air pollution control device which removes particulates and fumes from air above a pickling bath by entraining the pollutants in water.

NR 253.03(20) (20) “Pickling rinse” means a rinse, other than an alkaline cleaning rinse, through which a workpiece is processed. A rinse consisting of a series of rinse tanks is considered as a single rinse.

NR 253.03(21) (21) “Pickling rinse for forged parts” means a rinse, other than an alkaline cleaning rinse, through which forged parts are processed. A rinse consisting of a series of tanks is considered as a single rinse.

NR 253.03(22) (22) “Precious metals” means gold, platinum, palladium, silver, and their alloys when the alloy contains 30% or greater percent by weight of precious metals.

NR 253.03(23) (23) “Primary forming operation” means hot rolling, cold rolling, drawing, extrusion, and forging of copper and copper alloys.

NR 253.03(24) (24) “Rolling” means reducing the thickness or diameter of a workpiece by passing it between rollers.

NR 253.03(25) (25) “Solution heat treatment” means introducing a workpiece into a quench bath for purposes of heat treatment.

NR 253.03(26) (26) “Spent lubricant” means water or an oil and water mixture which has been used in forming operations to reduce friction, heat, and wear and which is discharged.

NR 253.03(27) (27) “Surface coating” means the process of coating a copper workpiece, as well as the associated surface washing and flattening.

NR 253.03(28) (28) “Total toxic organics” and “TTO” mean the sum of the masses or concentrations of each of the following organic compounds which is found at a concentration greater than 0.010 mg/l:
  anthracene
  benzene
  chloroform
  2,6-dinitrotoluene
  ethylbenzene
  methylene chloride
  naphthalene
  N-nitrosodiphenylamine
  phenanthrene
  toluene
  1,1,1-trichloroethane
  trichlorethylene.

NR 253.03(29) (29) “Tumbling or burnishing” means polishing, deburring, removing sharp corners, and generally smoothing parts for both cosmetic and functional purposes and washing the finished parts and cleaning the abrasive media.

NR 253.03 History History: Cr. Register, May, 1989, No. 401, eff. 6-1-89.

NR 253.04 NR 253.04 Monitoring and reporting requirements. The following special monitoring and reporting requirements apply to all facilities subject to this chapter:

NR 253.04(1) (1) The “monthly average” regulatory values shall be the basis for the monthly average discharge in direct discharge permits and for pretreatment standards. Compliance with the monthly discharge limit is required regardless of the number of samples analyzed and averaged.

NR 253.04(2) (2) As an alternate monitoring procedure for TTO, indirect dischargers may monitor for oil and grease and meet the alternate monitoring standards for oil and grease established for PSES and PSNS. Any indirect discharger meeting the alternate monitoring standards shall be considered to meet the TTO standard.

NR 253.04 History History: Cr. Register, May, 1989, No. 401, eff. 6-1-89.

NR 253.05 NR 253.05 Compliance dates.

NR 253.05(1) (1) Any existing source subject to this chapter which discharges to waters of the state shall achieve:

NR 253.05(1)(a) (a) The effluent limitations representing BPT by July 1, 1977; and

NR 253.05(1)(b) (b) The effluent limitations representing BAT by July 1, 1984.

NR 253.05(2) (2) Any new source subject to this chapter which discharges to waters of the state shall achieve NSPS at the commencement of discharge.