Wis. Admin. Code Department of Natural Resources § NR 274.263 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable

Current through March 28, 2022

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 BAT:

Table 26-15

Secondary Precious Metals Furnace Wet Air Pollution Control

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of precious metals, including silver, incinerated or smelted

Copper

5.760

2.745

Cyanide

0.900

0.360

Zinc

4.590

1.890

Combined metals

1.350

Ammonia (as N)

599.900

263.700

Table 26-16

Secondary Precious Metals Raw Material Granulation

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of precious metal in the granulated raw material

Copper

0.819

0.390

Cyanide

0.128

0.051

Zinc

0.653

0.269

Combined metals

0.192

Ammonia (as N)

85.310

37.500

Table 26-17

Secondary Precious Metals Spent Plating Solutions

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/liter of spent plating solution used as a raw material

Copper

1.280

0.610

Cyanide

0.200

0.080

Zinc

1.020

0.420

Combined metals

0.300

Ammonia (as N)

133.300

58.600

Table 26-18

Secondary Precious Metals Spent Cyanide Stripping Solutions

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of gold produced by cyanide stripping

Copper

4.736

2.257

Cyanide

0.740

0.296

Zinc

3.774

1.554

Combined metals

1.110

Ammonia (as N)

493.200

216.800

Table 26-19

Secondary Precious Metals Refinery Wet Air Pollution Control(1)

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of precious metals, including silver, produced in the refinery

Copper

1.280

0.610

Cyanide

0.200

0.080

Zinc

1.020

0.420

Combined metals

0.300

Ammonia (as N)

133.300

58.600

(1) This allowance applies to either acid or alkaline wet air pollution control scrubbers. If both acid and alkaline wet air pollution control scrubbers are present in a particular facility, the same allowance applies to each.

Table 26-20

Secondary Precious Metals Gold Solvent Extraction Raffinate and Wash Water

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of gold produced by solvent extraction

Copper

0.806

0.384

Cyanide

0.126

0.050

Zinc

0.643

0.265

Combined metals

0.189

Ammonia (as N)

83.980

36.920

Table 26-21

Secondary Precious Metals Gold Spent Electrolyte

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of gold produced by electrolysis

Copper

0.0111

0.0053

Cyanide

0.0017

0.0007

Zinc

0.0089

0.0037

Combined metals

0.0030

Ammonia (as N)

1.1600

0.5100

Table 26-22

Secondary Precious Metals Gold Precipitation and Filtration

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of gold precipitated

Copper

5.632

2.684

Cyanide

0.880

0.352

Zinc

4.488

1.848

Combined metals

1.320

Ammonia (as N)

586.500

257.800

Table 26-23

Secondary Precious Metals Platinum Precipitation and Filtration

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of platinum precipitated

Copper

6.656

3.172

Cyanide

1.040

0.416

Zinc

5.304

2.184

Combined metals

1.560

Ammonia (as N)

693.200

304.700

Table 26-24

Secondary Precious Metals Palladium Precipitation and Filtration

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of palladium precipitated

Copper

7.680

3.660

Cyanide

1.200

0.480

Zinc

6.120

2.520

Combined metals

1.800

Ammonia (as N)

799.800

351.600

Table 26-25

Secondary Precious Metals Other Platinum Group Metals Precipitation and Filtration

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of other platinum group metals precipitated

Copper

6.656

3.172

Cyanide

1.040

0.416

Zinc

5.304

2.184

Combined metals

1.560

Ammonia (as N)

693.200

304.700

Table 26-26

Secondary Precious Metals Spent Solution for PGC Salt Production

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of gold contained in PGC product

Copper

1.152

0.549

Cyanide

0.180

0.072

Zinc

0.918

0.376

Combined metals

0.270

Ammonia (as N)

120.000

52.740

Table 26-27

Secondary Precious Metals Equipment and Floor Wash

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of precious metals, including silver, produced in the refinery

Copper

0.000

0.000

Cyanide

0.000

0.000

Zinc

0.000

0.000

Combined metals

0.000

Ammonia (as N)

0.000

0.000

Table 26-28

Secondary Precious Metals Preliminary Treatment

BAT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/troy ounce of total precious metals produced through this operation

Copper

64.000

30.500

Cyanide

10.000

4.000

Zinc

51.000

21.000

Combined metals

15.000

Ammonia (as N)

6,665.000

2,930.000

Notes

Wis. Admin. Code Department of Natural Resources § NR 274.263
Cr. Register, March, 1991, No. 423, eff. 4-1-91.

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