1 The pH shall be maintained within the range of 7.0 to 10.0 at all times, except for those situations when this waste stream is discharged separately and without commingling with any other wastewater, in which case the pH shall be within the range of 6.0 to 10.0 at all times.
-
See PDF for table 
1Within the range of 7.0 to 10 at all times.
NR 257.22 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.23 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.24
NR 257.24
New source performance standards. Any new source subject to this subchapter shall achieve the following performance standards:
-
See PDF for table
1 The pH shall be maintained within the range of 7.0 to 10.0 at all times, except for those situations when this waste stream is discharged separately and without commingling with any other wastewater, in which case the pH shall be within the range of 6.0 to 10.0 at all times.
-
See PDF for table
1 Within the range of 7.0 to 10 at all times.
NR 257.24 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.25 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.26 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.30
NR 257.30
Applicability; description of the extrusion subcategory. This subchapter applies to the discharge of pollutants to waters of the state and the introduction of pollutants into POTWs from core and ancillary extrusion operations.
NR 257.30 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.31
NR 257.31
Specialized definitions. In addition to the definitions set forth in
s. NR 257.03, the following definitions apply to the terms used in this subchapter:
NR 257.31(1)
(1) "Ancillary operation" means any operation which is not a core operation but which is performed on-site following or preceding the extrusion operation, such as direct chill casting, press or solution heat treatment, cleaning or etching, degassing, and extrusion press hydraulic fluid leakage.
NR 257.31(2)
(2) "Core operation" means extrusion die cleaning, any wet scrubber associated with the die cleaning, dummy block cooling, stationary casting, artificial aging, annealing, degreasing, and sawing.
NR 257.31(3)
(3) "Extrusion die cleaning" means an operation in which the steel dies used for aluminum extrusion are cleaned by dipping the dies into a concentrated caustic bath to dissolve the aluminum and then rinsing the dies with water.
NR 257.31 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.32
NR 257.32
Effluent limitations representing the degree of effluent reduction attainable by application of the best practicable control technology currently available. Except as provided in
40 CFR 125.30 to
125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BPT:
-
See PDF for table
1 The pH shall be maintained within the range of 7.0 to 10.0 at all times, except for those situations when this waste stream is discharged separately and without commingling with any other wastewater, in which case the pH shall be within the range of 6.0 to 10.0 at all times.
-
See PDF for table
1 Within the range of 7.0 to 10 at all times.
NR 257.32 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.33 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.34
NR 257.34
New source performance standards. Any new source subject to this subchapter shall achieve the following performance standards. Degassing operations may not discharge wastewater pollutants.
-
See PDF for table
1 The pH shall be maintained within the range of 7.0 to 10.0 at all times, except for those situations when this waste stream is discharged separately and without commingling with any other wastewater, in which case the pH shall be within the range of 6.0 to 10.0 at all times.
-
See PDF for table
1 Within the range of 7.0 to 10 at all times.
NR 257.34 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.35 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.36 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.40
NR 257.40
Applicability; description of the forging subcategory. This subchapter applies to the discharge of pollutants to waters of the state and the introduction of pollutants into POTWs from core and ancillary forging operations.
NR 257.40 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.41
NR 257.41
Specialized definitions. In addition to the definitions set forth in
s. NR 257.03, the following definitions apply to the terms used in this subchapter:
NR 257.41(1)
(1) "Ancillary operation" means any operation which is not a core operation but which is performed on-site following or preceding the forging operation, such as forging air pollution scrubbers, solution heat treatment, cleaning or etching.
NR 257.41(2)
(2) "Core operation" means forging, artificial aging, annealing, degreasing, and sawing.
NR 257.41 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.44
NR 257.44
New source performance standards. Any new source subject to this subchapter shall achieve the following performance standards:
-
See PDF for table
1 Within the range of 7.0 to 10 at all times.
NR 257.44 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.45 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.46 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.50
NR 257.50
Applicability; description of the drawing with neat oils subcategory. This subchapter applies to the discharge of pollutants to waters of the state and the introduction of pollutants into POTWs from core and ancillary drawing with neat oils operations.
NR 257.50 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.51
NR 257.51
Specialized definitions. In addition to the definitions set forth in
s. NR 257.03, the following definitions apply to the terms used in this subchapter:
NR 257.51(1)
(1) "Ancillary operation" means any operation which is not a core operation but which is performed on-site following or preceding the drawing operation, such as continuous rod casting, solution heat treatment, and cleaning or etching.
NR 257.51(2)
(2) "Core operation" means drawing with neat oils, stationary casting, artificial aging, annealing, degreasing, sawing, and swaging.
NR 257.51 History
History: Cr.
Register, November, 1989, No. 407, eff. 12-1-89.
NR 257.52
NR 257.52
Effluent limitations representing the degree of effluent reduction attainable by application of the best practicable control technology currently available. Except as provided in
40 CFR 125.30 to
125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of BPT:
-
See PDF for table
