40 CFR 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.

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.

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.

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.

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.

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.

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.