Wisconsin Administrative Code › Department of Natural Resources › NR 200-299 - Environmental Protection Wisconsin Pollutant Discharge Elimination System › Chapter NR 274 - Nonferrous metals manufacturing › Subchapter XXIX - Secondary Tin › Section NR 274.292 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available

Current through June 24, 2024
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 application of BPT:
Table 29-1
Secondary Tin Tin Smelter Sulfur Dioxide
					 Scrubber
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of crude tapped
								  tin metal produced
Arsenic
19.220
8.554
Lead
3.863
1.840
Iron
11.040
5.611
Tin
3.495
2.024
Total suspended solids
377.100
179.400
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-2
Secondary Tin Dealuminizing Rinse
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of dealuminized
								  scrap produced
Lead
0.015
0.007
Cyanide
0.010
0.004
Fluoride
1.225
0.700
Tin
0.013
0.008
Total suspended solids
1.435
0.683
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-3
Secondary Tin Tin Mud Acid Neutralization
					 Filtrate
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds)
of neutralized dewatered tin mud
produced
Lead
2.120
1.009
Cyanide
1.464
0.606
Fluoride
176.600
100.400
Tin
1.918
1.110
Total suspended solids
206.900
98.420
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-4
Secondary Tin Tin Hydroxide Wash
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tin
								  hydroxide washed
Lead
5.020
2.391
Cyanide
3.466
1.434
Fluoride
418.400
237.900
Tin
4.542
2.630
Total suspended solids
490.100
233.100
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-5
Secondary Tin Spent Electrowinning Solution From New
					 Scrap
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of cathode tin
								  produced
Lead
7.056
3.360
Cyanide
4.872
2.016
Fluoride
588.000
334.300
Tin
6.384
3.696
Total suspended solids
688.800
327.600
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-6
Secondary Tin Spent Electrowinning Solution From
					 Municipal Solid Waste
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of municipal
								  solid waste scrap used as a raw material
Lead
0.050
0.024
Cyanide
0.035
0.014
Fluoride
4.165
2.368
Tin
0.045
0.026
Total suspended solids
4.879
2.321
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-7
Secondary Tin Tin Hydroxide Supernatant From
					 Scrap
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tin metal
								  recovered from scrap
Lead
23.370
11.130
Cyanide
16.140
6.677
Fluoride
1,947.000
1,107.000
Tin
21.140
12.240
Total suspended solids
2,281.000
1,085.000
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-8
Secondary Tin Tin Hydroxide Supernatant From Plating
					 Solutions and Sludges
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of tin metal
								  recovered from plating solutions and sludges
Lead
48.30
23.00
Cyanide
33.35
13.80
Fluoride
4,025.00
2,289.00
Tin
43.70
25.30
Total suspended solids
4,715.00
2,243.00
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times
Table 29-9
Secondary Tin Tin Hydroxide Filtrate
BPT Effluent Limitations
Maximum for any 1 day
Maximum for monthly average
Pollutant or pollutant property
mg/kg (pounds per million pounds) of crude tapped
								  tin metal produced
Lead
10.520
5.009
Cyanide
7.263
3.005
Fluoride
876.500
498.400
Tin
9.517
5.510
Total suspended solids
1,027.000
488.400
pH
(1)
(1)
(1) Within the range of 7.5 to 10.0 at all times