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

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Nonferrous Metals Manufacturing Point Source Category
  7. Metallurgical Acid Plants Subcategory
  8. Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

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§ 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):

Expand Table

Subpart I - Metallurgical Acid Plant

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds of 100% sulfuric acid capacity
Cadmium 0.180 0.090
Copper 5.000 2.000
Lead 1.800 0.790
Zinc 3.600 0.900
Fluoride1 212.800 121.000
Molybdenum1 40.180 20.790
Total suspended solids 304.000 152.000
pH 2 2

1 For Molybdenum Acid Plants Only.

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

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


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