Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

§ 421.222 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control 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

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of technical grade molybdenum plus vanadium plus pure grade molybdenum produced
Arsenic40.77818.145
Chromium8.5853.512
Lead8.1953.902
Nickel37.46024.779
Iron23.41011.902
Molybdenum[Reserved][Reserved]
Ammonia (as N)8078.0003551.000
Total Suspended Solids799.950380.460
pH( 1)( 1)
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