Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: (a) Subpart K—Concentrate Digestion Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead .174 .081 Zinc .635 .261 Ammonia (as N) 82.910 36.450 Fluoride 21.770 12.440 Total suspended solids 9.330 7.464 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (b) Subpart K—Solvent Extraction Raffinate. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead 2.592 1.203 Zinc 9.442 3.888 Ammonia (as N) 1,233.000 542.5000 Fluoride 324.000 185.100 Total Suspended Solids 138.900 111.100 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (c) Subpart K—Solvent Extraction Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead .069 .032 Zinc .251 .103 Ammonia (as N) 32.790 14.420 Fluoride 8.610 4.920 Total suspended solids 3.690 2.952 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (d) Subpart K—Precipitation and Filtration. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead 3.833 1.780 Zinc 13.960 5.750 Ammonia (as N) 1,825.000 802.200 Fluoride 479.100 273.800 Total suspended solids 205.400 164.300 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (e) Subpart K—Precipitation and Filtration Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead 1.778 .826 Zinc 6.478 2.668 Ammonia (as N) 846.600 372.200 Fluoride 222.300 127.000 Total suspended solids 95.270 76.210 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (f) Subpart K—Tantalum Salt Drying. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum salt dried Lead 16.950 7.871 Zinc 61.750 25.430 Ammonia (as N) 8,070.000 3,548.000 Fluoride 2,119.000 1,211.000 Total suspended solids 908.200 726.500 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (g) Subpart K—Oxides Calcining Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of columbium-tantalum oxide dried Lead 1.076 .500 Zinc 3.919 1.614 Ammonia (as N) 512.200 225.200 Fluoride 134.500 76.840 Total suspended solids 57.630 46.110 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (h) Subpart K—Reduction of Tantalum Salt to Metal. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum salt reduced Lead 46.500 21.590 Zinc 169.400 69.750 Ammonia (as N) 22,140.000 9,732.000 Fluoride 5,813.000 3,322.000 Total suspended solids 2,491.000 1,993.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum salt reduced Lead .572 .266 Zinc 2.084 .858 Ammonia (as N) 272.400 119.700 Fluoride 71.510 40.860 Total suspended solids 30.650 24.520 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (j) Subpart K—Tantalum Powder Wash. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum powder washed Lead 5.721 2.656 Zinc 20.840 8.582 Ammonia (as N) 2,724.000 1,198.000 Fluoride 715.200 408.700 Total suspended solids 306.500 245.200 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (k) Subpart K—Consolidation and Casting Contact Cooling. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of columbium or tantalum cast or consolidated Lead .000 .000 Zinc .000 .000 Ammonia (as N) .000 .000 Fluoride .000 .000 Total suspended solids .000 .000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. [49 FR 8817, Mar. 8, 1984, as amended at 49 FR 29795, July 24, 1984; 50 FR 12253, Mar. 28, 1985]