40 C.F.R. § 421.116

Current through September 30, 2024
Section 421.116 - Pretreatment standards for new sources

Except as provided in 40 CFR 403.7 , any new 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 new 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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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.

PSNS

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

40 C.F.R. §421.116

49 FR 8817, Mar. 8, 1984, as amended at 50 FR 12253, Mar. 28, 1985