Code of Federal Regulations (alpha)

CFR /  Title 40  /  Part 421  /  Sec. 421.213 Effluent limitations guidelines representing the degreeavailable technology

economically achievable.

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 available technology economically achievable:

(a) Molybdenum sulfide leachate.

BAT Limitations for the Primary Molybdenum and Rhenium Subcategory------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds million

pounds) of molybdenum

sulfide leached

--------------Arsenic....................................... 0.644 0.287Lead.......................................... 0.130 0.060Nickel........................................ 0.255 0.171Selenium...................................... 0.380 0.171Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 61.720 27.130Fluoride...................................... 16.210 9.214------------------------------------------------------------------------

(b) Roaster SO2 scrubber.

BAT Limitations for the Primary Molybdenum and Rhenium Subcategory------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per/

million pounds) of

molybdenum sulfide

roasted

--------------Arsenic....................................... 2.334 1.041Lead.......................................... 0.470 0.218Nickel........................................ 0.924 0.621Selenium...................................... 1.377 0.621Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 223.800 98.390Fluoride...................................... 58.770 33.410------------------------------------------------------------------------

(c) Molybdic oxide leachate.

BAT Limitations for the Primary Molybdenum and Rhenium Subcategory------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per/

million pounds) of

molybdenum contained in

molybdic oxide leached

--------------Arsenic....................................... 16.100 7.182Lead.......................................... 3.244 1.506Nickel........................................ 6.371 4.286Selenium...................................... 9.499 4.286Molybdenum.................................... [Reserved] [Reserved]Ammonia (as N)................................ 1,544.000 678.800Fluoride...................................... 405.400 230.500------------------------------------------------------------------------

(d) Hydrogen reduction furnace scrubber.

BAT Limitations for the Primary Molybdenum and Rhenium Subcategory------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per/

million pounds) of

molybdenum metal powder

produced

--------------Arsenic....................................... 3.183 1.420Lead.......................................... 0.641 0.298Nickel........................................ 1.260 0.847Selenium...................................... 1.878 0.847Molybdenum.................................... [Reserved] [Reserved].Ammonia (as N)................................ 305.300 134.200Fluoride...................................... 80.150 45.570------------------------------------------------------------------------

(e) Depleted rhenium scrubbing solution.

BAT Limitations for the Primary Molybdenum and Rhenium Subcategory------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per/

million pounds) of

molybdenum sulfide

roasted

--------------Arsenic....................................... 0.995 0.444Lead.......................................... 0.201 0.093Nickel........................................ 0.394 0.265Selenium...................................... 0.587 0.265Molybdenum.................................... [Reserved] [Reserved].Ammonia (as N)................................ 95.440 41.960Fluoride...................................... 25.060 14.250------------------------------------------------------------------------ [50 FR 38355, Sept. 20, 1985, as amended at 55 FR 31701, 31702, Aug. 3, 1990]