40 C.F.R. § 421.92

Current through September 30, 2024
Section 421.92 - 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 must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):

Subpart I-Metallurgical Acid Plant

Pollutant or pollutant propertyBPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds of 100% sulfuric acid capacity
Cadmium0.1800.090
Copper5.0002.000
Lead1.8000.790
Zinc3.6000.900
Fluoride1212.800121.000
Molybdenum140.18020.790
Total suspended solids304.000152.000
pH22

1 For Molybdenum Acid Plants Only.

2 Within the range of 6.0 to 9.0 at all times.

40 C.F.R. §421.92

50 FR 38342, Sept. 20, 1985; 50 FR 52776, Dec. 26, 1985