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) Subpart K--Concentrate Digestion Wet Air Pollution Control.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
concentrate digested
--------------Lead.......................................... .174 .081Zinc.......................................... .635 .261Ammonia (as N)................................ 82.910 36.450Fluoride...................................... 21.770 12.440------------------------------------------------------------------------
(b) Subpart K--Solvent Extraction Raffinate.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/Kg (pounds per million
pounds) of concentrate
digested
--------------Lead......................................... 2.592 1.203Zinc......................................... 9.442 3.888Ammonia (as N)............................... 1,233.000 542.5000Fluoride..................................... 324.000 185.100------------------------------------------------------------------------
(c) Subpart K--Solvent Extraction Wet Air Pollution Control.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
concentrate digested
--------------Lead.......................................... .069 .032Zinc.......................................... .251 .103Ammonia (as N)................................ 32.790 14.420Fluoride...................................... 8.610 4.920------------------------------------------------------------------------
(d) Subpart K--Precipitation and Filtration.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
concentrate digested
--------------Lead.......................................... 3.833 1.780Zinc.......................................... 13.960 5.750Ammonia (as N)................................ 1,825.000 802.200Fluoride...................................... 479.100 273.800------------------------------------------------------------------------
(e) Subpart K--Precipitation and Filtration Wet Air Pollution Control.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
concentrate digested
--------------Lead.......................................... 1.778 .826Zinc.......................................... 6.478 2.668Ammonia (as N)................................ 846.600 372.200Fluoride...................................... 222.300 127.000------------------------------------------------------------------------
(f) Subpart K--Tantalum Salt Drying.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tantalum salt dried
--------------Lead.......................................... 16.950 7.871Zinc.......................................... 61.750 25.430Ammonia (as N)................................ 8,070.000 3,548.000Fluoride...................................... 2,119.000 1,211.000------------------------------------------------------------------------
(g) Subpart K--Oxides Calcining Wet Air Pollution Control.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
columbium-tantalum oxide
--------------Lead.......................................... 1.076 .500Zinc.......................................... 3.919 1.614Ammonia (as N)................................ 512.200 225.200Fluoride...................................... 134.500 76.840------------------------------------------------------------------------
(h) Subpart K--Reduction of Tantalum Salt to Metal.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tantalum salt reduced
--------------Lead.......................................... 46.500 21.590Zinc.......................................... 169.400 69.750Ammonia (as N)................................ 22,140.000 9,732.000Fluoride...................................... 5,813.000 3,322.000------------------------------------------------------------------------
(i) Subpart K--Reduction of Tantalum Salt to Metal Wet Air Pollution Control.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tantalum salt reduced
--------------Lead.......................................... .572 .266Zinc.......................................... 2.084 .858Fluoride...................................... 71.510 40.860------------------------------------------------------------------------
(j) Subpart K--Tantalum Powder Wash.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
tantalum powder washed
--------------Lead.......................................... 5.721 2.656Zinc.......................................... 20.840 8.582Ammonia (as N)................................ 2,724.000 1,198.000Fluoride...................................... 715.200 408.700------------------------------------------------------------------------
(k) Subpart K--Consolidation and Casting Contact Cooling.
BAT Effluent Limitations------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
columbium or tantalum
cast or consolidated
--------------Lead.......................................... .000 .000Zinc.......................................... .000 .000Ammonia (as N)................................ .000 .000Fluoride...................................... .000 .000------------------------------------------------------------------------ [49 FR 8817, Mar. 8, 1984, as amended at 50 FR 12253, Mar. 28, 1985]