40 CFR 421.294 - Standards of performance for new sources.

§ 421.294 Standards of performance for new sources.
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Tin smelter SO2 scrubber.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of crude tapped tin produced
Arsenic 12.790 5.703
Lead 2.575 1.196
Iron 11.040 5.611
Tin 3.495 2.024
Total suspended solids 138.000 110.400
pH (1) (1)
(b) Dealuminizing rinse.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of dealuminized scrap produced
Lead 0.010 0.005
Cyanide (total) 0.007 0.003
Fluoride 1.225 0.697
Tin 0.013 0.008
Total suspended solids 0.525 0.420
pH (1) (1)
(c) Tin mud acid neutralization filtrate.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of neutralized dewatered tin mud produced
Lead 1.413 0.656
Cyanide (total) 1.009 0.404
Fluoride 176.600 100.400
Tin 1.918 1.110
Total suspended solids 75.710 60.560
pH (1) (1)
(d) Tin hydroxide wash.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of tin hydroxide washed
Lead 3.347 1.554
Cyanide (total) 2.391 0.956
Fluoride 418.400 237.900
Tin 4.542 2.630
Total suspended solids 179.300 143.400
pH (1) (1)
(e) Spent electrowinning solution from new scrap.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of cathode tin produced
Lead 4.704 2.184
Cyanide (total) 3.360 1.344
Fluoride 588.000 334.300
Tin 6.384 3.696
Total suspended solids 252.000 201.600
pH (1) (1)
(f) Spent electrowinning solution from municipal solid waste.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of MSW scrap used as raw material
Lead 0.033 0.015
Cyanide (total) 0.024 0.010
Fluoride 4.165 2.368
Tin 0.045 0.026
Total suspended solids 1.785 1.428
pH (1) (1)
(g) Tin hydroxide supernatant from scrap.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of tin metal recovered from scrap
Lead 15.580 7.233
Cyanide (total) 11.130 4.451
Fluoride 1,947.000 1,107.000
Tin 21.140 12.240
Total suspended solids 834.600 667.700
pH (1) (1)
(h) Tin hydroxide supernatant from plating solutions and sludges.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of tin metal recovered from plating solutions and sludges
Lead 32.20 14.95
Cyanide (total) 23.00 9.20
Fluoride 4,025.00 2,289.00
Tin 43.70 25.30
Total suspended solids 1,725.00 1,380.00
pH (1) (1)
(i) Tin hydroxide filtrate.
NSPS for the Secondary Tin Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
mg/kg (pounds per million pounds) of tin metal produced
Lead 7.012 3.256
Cyanide (total) 5.009 2.004
Fluoride 876.500 498.400
Tin 9.517 5.510
Total suspended solids 375.700 300.500
pH (1) (1)

Title 40 published on 2014-07-01

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