1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 421
  5. subpart K
  6. § 421.113

View all text of Subpart K [§ 421.110 - § 421.117]

§ 421.113 - 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:

(a) Subpart K—Concentrate Digestion Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead.174.081 Zinc.635.261 Ammonia (as N)82.91036.450 Fluoride21.77012.440

(b) Subpart K—Solvent Extraction Raffinate.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/Kg (pounds per million pounds) of concentrate digested Lead2.5921.203 Zinc9.4423.888 Ammonia (as N)1,233.000542.5000 Fluoride324.000185.100

(c) Subpart K—Solvent Extraction Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead.069.032 Zinc.251.103 Ammonia (as N)32.79014.420 Fluoride8.6104.920

(d) Subpart K—Precipitation and Filtration.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead3.8331.780 Zinc13.9605.750 Ammonia (as N)1,825.000802.200 Fluoride479.100273.800

(e) Subpart K—Precipitation and Filtration Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of concentrate digested Lead1.778.826 Zinc6.4782.668 Ammonia (as N)846.600372.200 Fluoride222.300127.000

(f) Subpart K—Tantalum Salt Drying.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum salt dried Lead16.9507.871 Zinc61.75025.430 Ammonia (as N)8,070.0003,548.000 Fluoride2,119.0001,211.000

(g) Subpart K—Oxides Calcining Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of columbium-tantalum oxide Lead1.076.500 Zinc3.9191.614 Ammonia (as N)512.200225.200 Fluoride134.50076.840

(h) Subpart K—Reduction of Tantalum Salt to Metal.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum salt reduced Lead46.50021.590 Zinc169.40069.750 Ammonia (as N)22,140.0009,732.000 Fluoride5,813.0003,322.000

(i) Subpart K—Reduction of Tantalum Salt to Metal Wet Air Pollution Control.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum salt reduced Lead.572.266 Zinc2.084.858 Fluoride71.51040.860

(j) Subpart K—Tantalum Powder Wash.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of tantalum powder washed Lead5.7212.656 Zinc20.8408.582 Ammonia (as N)2,724.0001,198.000 Fluoride715.200408.700

(k) Subpart K—Consolidation and Casting Contact Cooling.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of columbium or tantalum cast or consolidated Lead.000.000 Zinc.000.000 Ammonia (as N).000.000 Fluoride.000.000
[49 FR 8817, Mar. 8, 1984, as amended at 50 FR 12253, Mar. 28, 1985]

AUTHORITY: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4.

SOURCE: 49 FR 8790, Mar. 8, 1984, unless otherwise noted.

CITE AS: 40 CFR 421.113