Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: (a) Subpart L—Film Stripping. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver from film stripping Copper 64.450 30.720 Zinc 51.360 21.150 Ammonia (as N) 6,712.000 2,951.000 Total suspended solids 755.300 604.200 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (b) Subpart L—Film Stripping Wet Air Pollution Control and Precipitation and Filtration of Film Stripping Solutions Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver from precipitation and filtration of film stripping solutions Copper 1.242 .592 Zinc .990 .408 Ammonia (as N) 129.300 56.840 Total suspended solids 14.550 11.640 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (c) Subpart L—Precipitation and Filtration of Film Stripping Solutions. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver precipitated Copper 73.690 35.120 Zinc 58.720 24.180 Ammonia (as N) 7,674.000 3,374.000 Total suspended solids 863.600 690.900 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (d) Subpart L—Precipitation and Filtration of Photographic Solutions. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver precipitated Copper 34.048 16.226 Zinc 27.132 11.172 Ammonia (as N) 3,545.000 1,559.000 Total suspended solids 399.000 319.200 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (e) Subpart L—Precipitation and Filtration of Photographic Solutions Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver from precipitation and filtration of photographic solutions Copper 15.540 7.406 Zinc 12.380 5.099 Ammonia (as N) 1,618.000 711.400 Total suspended solids 182.100 145.700 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (f) Subpart L—Electrolytic Refining. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver from electrolytic refining Copper .973 .464 Zinc .775 .319 Ammonia (as N) 101.300 44.540 Total suspended solids 11.400 9.120 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (g) Subpart L—Furnace Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver roasted, smelted, or dried Copper .000 .000 Zinc .000 .000 Ammonia (as N) .000 .000 Total suspended solids .000 .000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (h) Subpart L—Leaching. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver produced from leaching Copper .110 .053 Zinc .088 .036 Ammonia (as N) 11.470 5.040 Total suspended solids 1.290 1.032 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (i) Subpart L—Leaching Wet Air Pollution Control and Precipitation of Nonphotographic Solutions Wet Air Pollution Control. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver produced from leaching or silver precipitated Copper 5.671 2.703 Zinc 4.519 1.861 Ammonia (as N) 590.500 259.600 Total suspended solids 66.450 53.160 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (j) Subpart L—Precipitation and Filtration of Nonphotograhic Solutions. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver precipitated Copper 3.930 1.873 Zinc 3.132 1.290 Ammonia (as N) 409.300 179.900 Total suspended solids 46.050 36.840 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (k) Subpart L—Floor and Equipment Washdown. NSPS Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/troy ounce of silver production Copper .000 .000 Zinc .000 .000 Ammonia (as N) .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 8821, Mar. 8, 1984, as amended at 49 FR 29795, July 24, 1984]