Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in secondary molybdenum and vanadium process wastewater introduced into a POTW shall not exceed the following values:
(a) Leach tailings.
PSNS 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....................................... 27.120 12.097Chromium...................................... 7.219 2.927Lead.......................................... 5.463 2.536Nickel........................................ 10.731 7.219Iron.......................................... 23.413 11.902Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 8078.000 3551.000------------------------------------------------------------------------
(b) Molybdenum filtrate solvent extraction raffinate.
PSNS 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....................................... 80.952 36.108Chromium...................................... 21.548 8.736Lead.......................................... 16.306 7.571Nickel........................................ 32.031 21.548Iron.......................................... 69.887 35.526Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 24114.000 10600.000------------------------------------------------------------------------
(c) Vanadium decomposition wet air pollution control.
PSNS for the Secondary Molybdenum and Vandadium Subcategory------------------------------------------------------------------------
Maximum for
Pollutant or pollutant property Maximum for monthly
any 1 day average------------------------------------------------------------------------
mg/kg (pounds per
million pounds) vanadium
produced by
decomposition
--------------
Arsenic....................................... 0.000 0.000
Chromium...................................... 0.000 0.000Lead.......................................... 0.000 0.000Nickel........................................ 0.000 0.000Iron.......................................... 0.000 0.000Molybdenum.................................... 0.000 0.000Ammonia (as N)................................ 0.000 0.000------------------------------------------------------------------------
(d) Molybdenum drying wet air pollution control.
PSNS for the Secondary Molybdenum and Vandadium 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 0.000------------------------------------------------------------------------
(e) Pure Grade Molybdenum.
PSNS 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....................................... 32.359 14.434Chromium...................................... 8.614 3.492Lead.......................................... 6.518 3.026Nickel........................................ 12.804 8.614Iron.......................................... 27.936 14.201Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 9638.000 4237.000------------------------------------------------------------------------ [50 FR 38357, Sept. 20, 1985, as amended at 55 FR 31704, 31705 Aug. 3, 1990] Sec. 421.227 [Reserved]