40 CFR § 421.93 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

§ 421.93 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available 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:

Subpart I - Metallurgical Acid Plant - BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per/million pounds) of 100 pct sulfuric acid capacity
Arsenic 3.550 1.584
Cadmium 0.511 0.204
Copper 3.269 1.558
Lead 0.715 0.332
Zinc 2.605 1.073
Fluoride 1 89.390 50.820
Molybdenum 1 [Reserved] [Reserved].

1 For Molybdenum acid plants only.

[50 FR 38343, Sept. 20, 1985, as amended at 55 FR 31697, Aug. 3, 1990]

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