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Electronic Code of Federal Regulations

e-CFR Data is current as of December 17, 2014

Title 40Chapter ISubchapter NPart 421Subpart U → §421.233


Title 40: Protection of Environment
PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
Subpart U—Primary Nickel and Cobalt Subcategory


§421.233   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) Raw material dust control.

BAT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of copper, nickel, and cobalt in the crushed raw material
Copper0.0990.047
Nickel0.0420.028
Ammonia (as N)10.2604.512
Cobalt0.0110.005

(b) Nickel wash water.

BAT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of nickel powder washed
Copper0.0430.021
Nickel0.0190.013
Ammonia (as N)4.5151.985
Cobalt0.0050.002

(c) Nickel reduction decant.

BAT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of nickel produced
Copper16.2507.744
Nickel6.9824.697
Ammonia (as N)1,692.000743.900
Cobalt1.7770.889

(d) Cobalt reduction decant.

BAT Limitations for the Primary Nickel and Cobalt Subcategory

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
mg/kg (pounds per million pounds) of cobalt produced
Copper27.39013.050
Nickel11.7707.917
Ammonia (as N)2,852.0001,254.000
Cobalt2.9961.498

[50 FR 38359, Sept. 20, 1985; 50 FR 41144, Oct. 9, 1985]



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