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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
mischmetal produced from
wet rare earth chlorides
--------------Hexachlorobenzene............................. 0.042 0.042Chromium (total).............................. 1.544 0.626Lead.......................................... 1.168 0.542Nickel........................................ 2.295 1.544Total suspended solids........................ 62.600 50.080pH............................................ (\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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of mischmetal
produced from wet rare
earth chlorides
---------------Hexachlorobenzene........................... 0.007 0.007Chromium (total)............................ 0.272 0.110Lead........................................ 0.206 0.095Nickel...................................... 0.404 0.272Total suspended solids...................... 11.010 8.808pH.......................................... (\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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of total
mischmetal produced
---------------Hexachlorobenzene........................... 0.094 0.094Chromium (total)............................ 3.474 1.409Lead........................................ 2.629 1.221Nickel...................................... 5.165 3.474Total suspended solids...................... 140.900 112.700pH.......................................... (\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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of total
mischmetal produced
---------------Hexachlorobenzene........................... 0.000 0.000Chromium (total)............................ 0.000 0.000Lead........................................ 0.000 0.000Nickel...................................... 0.000 0.000Total suspended solids...................... 0.000 0.000pH.......................................... (\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------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of total
mischmetal produced
--------------Hexachlorobenzene............................. 0.004 0.004Chromium (total).............................. 0.134 0.054Lead.......................................... 0.101 0.047Nickel........................................ 0.199 0.134Total suspended solids........................ 5.430 4.334pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.