Standards of performance for new sources.

Any new source subject to this subpart shall achieve the following new source performance standards: (a) Dryer Vent Water Quench and Scrubber. NSPS for the Primary Rare Earth Metals Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene 0.042 0.042 Chromium (total) 1.544 0.626 Lead 1.168 0.542 Nickel 2.295 1.544 Total suspended solids 62.600 50.080 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (b) Dryer vent caustic wet air pollution control. NSPS for the Primary Rare Earth Metals Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of mischmetal produced from wet rare earth chlorides Hexachlorobenzene 0.007 0.007 Chromium (total) 0.272 0.110 Lead 0.206 0.095 Nickel 0.404 0.272 Total suspended solids 11.010 8.808 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (c) Electrolytic cell water quench and scrubber. NSPS for the Primary Rare Earth Metals Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene 0.094 0.094 Chromium (total) 3.474 1.409 Lead 2.629 1.221 Nickel 5.165 3.474 Total suspended solids 140.900 112.700 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (d) Electrolytic cell caustic wet air pollution control. NSPS for the Primary Rare Earth Metals Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene 0.000 0.000 Chromium (total) 0.000 0.000 Lead 0.000 0.000 Nickel 0.000 0.000 Total suspended solids 0.000 0.000 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times. (e) Sodium hypochlorite filter backwash. NSPS for the Primary Rare Earth Metals Subcategory Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of total mischmetal produced Hexachlorobenzene 0.004 0.004 Chromium (total) 0.134 0.054 Lead 0.101 0.047 Nickel 0.199 0.134 Total suspended solids 5.430 4.334 pH ( 1 ) ( 1 ) 1 Within the range of 7.5 to 10.0 at all times.