40 CFR 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

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)

1 Within the range of 7.5 to 10.0 at all times.

(b) Dealuminizing rinse.

NSPS for the Secondary Tin Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

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)

1 Within the range of 7.5 to 10.0 at all times.

(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

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)

1 Within the range of 7.5 to 10.0 at all times.

(d) Tin hydroxide wash.

NSPS for the Secondary Tin Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

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)

1 Within the range of 7.5 to 10.0 at all times.

(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

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)

1 Within the range of 7.5 to 10.0 at all times.

(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

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)

1 Within the range of 7.5 to 10.0 at all times.

(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

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)

1 Within the range of 7.5 to 10.0 at all times.

(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

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)

1 Within the range of 7.5 to 10.0 at all times.

(i) Tin hydroxide filtrate.

NSPS for the Secondary Tin Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

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)

1 Within the range of 7.5 to 10.0 at all times.