technology currently available.
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 practicable technology currently available:
(a) Leach tailings.
BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
technical grade
molybdenum plus vanadium
plus pure grade
molybdenum produced
-------------------------Arsenic....................................... 40.778 18.145Chromium...................................... 8.585 3.512Lead.......................................... 8.195 3.902Nickel........................................ 37.460 24.779Iron.......................................... 23.410 11.902Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 8078.000 3551.000Total Suspended Solids........................ 799.950 380.460
pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(b) Molybdenum filtrate solvent extraction raffinate.
BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
technical grade
molybdenum plus vanadium
plus pure grade
molybdenum produced
-------------------------Arsenic....................................... 121.720 54.162Chromium...................................... 25.625 10.483Lead.......................................... 24.460 11.648Nickel........................................ 111.819 73.964Iron.......................................... 69.887 35.526Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 24114.000 10600.000Total Suspended Solids........................ 2387.800 1135.660
pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times.
(c) Vanadium decomposition wet air pollution control.
BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
vanadium produced by
decomposition
--------------Arsenic....................................... 0.000 0.000Chromium...................................... 0.000 0.000Lead.......................................... 0.000 0.000Nickel........................................ 0.000 0.000Iron.......................................... 0.000 0.000Molybdenum.................................... 0.000 0.000
Ammonia (as N)................................ 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.
(d) Molybdenum drying wet air pollution control.
BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) of
molybdenum produced
--------------Arsenic....................................... 0.000 0.000Chromium...................................... 0.000 0.000Lead.......................................... 0.000 0.000Nickel........................................ 0.000 0.000Iron.......................................... 0.000 0.000Molybdenum.................................... 0.000 0.000Ammonia (as N)................................ 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) Pure Grade Molybdenum.
BPT Limitations for the Secondary Molybdenum and Vanadium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per million
pounds) of pure molybdenum
produced
---------------------------Arsenic..................................... 48.655 21.650Chromium.................................... 10.243 4.190Lead........................................ 9.778 4.656Nickel...................................... 44.698 29.566Iron........................................ 27.936 14.201Molybdenum.................................. [Reserved] [Reserved]Ammonia (as N).............................. 9638.000 4237.000Total Suspended Solids...................... 954.480 453.960pH.......................................... (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range of 7.5 to 10.0 at all times. [50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31703, Aug. 3, 1990]