Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Nonferrous Metals Manufacturing Point Source Category
  7. Primary and Secondary Germanium and Gallium Subcategory
  8. Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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§ 421.182 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable technology currently available:

(a) Still liquor.

Expand Table

BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of germanium chlorinated
Arsenic 131.700 58.590
Lead 26.460 12.600
Zinc 91.980 38.430
Fluoride 2,205.000 1,254.000
Total suspended solids 2,583.000 1,229.000
pH (1) (1)

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

(b) Chlorinator wet air pollution control.

Expand Table

BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of germanium chlorinated
Arsenic 27.530 12.250
Lead 5.531 2.634
Zinc 19.230 8.034
Fluoride 461.000 262.100
Total suspended solids 540.000 256.800
pH (1) (1)

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

(c) Germanium hydrolysis filtrate.

Expand Table

BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of germanium hydrolyzed
Arsenic 39.440 17.550
Lead 7.925 3.774
Zinc 27.550 11.510
Fluoride 660.500 375.500
Total suspended solids 773.700 368.000
pH (1) (1)

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

(d) Acid wash and rinse water.

Expand Table

BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of germanium washed
Arsenic 325.500 144.800
Lead 65.400 31.140
Zinc 227.400 94.990
Fluoride 5,450.000 3,099.000
Total suspended solids 6,385.000 3,037.000
pH (1) (1)

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

(e) Gallium hydrolysis filtrate.

Expand Table

BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of gallium hydrolyzed
Arsenic 70.450 31.350
Lead 14.160 6.742
Zinc 49.220 20.560
Fluoride 1,180.000 670.800
Total suspended solids 1,382.000 657.300
pH (1) 1)

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

(f) Solvent extraction raffinate.

Expand Table

BPT Limitations for the Primary and Secondary Germanium and Gallium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of gallium produced by solvent extraction
Arsenic 39.330 17.500
Lead 7.904 3.764
Zinc 27.480 11.480
Fluoride 658.700 374.500
Total suspended solids 771.600 367.000
pH (1) (1)

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


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