1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 421
  5. subpart K
  6. § 421.115

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

§ 421.115 - Pretreatment standards for existing sources.

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in primary columbium-tantalum process wastewater introduced into a POTW shall not exceed the following values:

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

PSES

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.

PSES

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.

PSES

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.

PSES

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.

PSES

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.

PSES

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.

PSES

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

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

PSES

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.

PSES

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 Ammonia (as N)272.400119.700 Fluoride71.51040.860

(j) Subpart K—Tantalum Powder Wash.

PSES

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.

PSNS

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 421.115