Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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§ 421.213 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

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 available technology economically achievable:

(a) Molybdenum sulfide leachate.

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BAT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds million pounds) of molybdenum sulfide leached
Arsenic 0.644 0.287
Lead 0.130 0.060
Nickel 0.255 0.171
Selenium 0.380 0.171
Molybdenum [Reserved] [Reserved]
Ammonia (as N) 61.720 27.130
Fluoride 16.210 9.214

(b) Roaster SO2 scrubber.

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BAT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds) of molybdenum sulfide roasted
Arsenic 2.334 1.041
Lead 0.470 0.218
Nickel 0.924 0.621
Selenium 1.377 0.621
Molybdenum [Reserved] [Reserved]
Ammonia (as N) 223.800 98.390
Fluoride 58.770 33.410

(c) Molybdic oxide leachate.

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BAT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds) of molybdenum contained in molybdic oxide leached
Arsenic 16.100 7.182
Lead 3.244 1.506
Nickel 6.371 4.286
Selenium 9.499 4.286
Molybdenum [Reserved] [Reserved]
Ammonia (as N) 1,544.000 678.800
Fluoride 405.400 230.500

(d) Hydrogen reduction furnace scrubber.

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BAT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds) of molybdenum metal powder produced
Arsenic 3.183 1.420
Lead 0.641 0.298
Nickel 1.260 0.847
Selenium 1.878 0.847
Molybdenum [Reserved] [Reserved].
Ammonia (as N) 305.300 134.200
Fluoride 80.150 45.570

(e) Depleted rhenium scrubbing solution.

Expand Table

BAT Limitations for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds) of molybdenum sulfide roasted
Arsenic 0.995 0.444
Lead 0.201 0.093
Nickel 0.394 0.265
Selenium 0.587 0.265
Molybdenum [Reserved] [Reserved].
Ammonia (as N) 95.440 41.960
Fluoride 25.060 14.250

[50 FR 38355, Sept. 20, 1985, as amended at 55 FR 31701, 31702, Aug. 3, 1990]


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