40 C.F.R. § 471.82

Current through September 30, 2024
Section 471.82 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)

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 available technology economically achievable (BAT):

(a)Rolling spent neat oils-subpart H-BAT. There shall be no discharge of process wastewater pollutants.
(b)Rolling spent emulsions.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc rolled with emulsions
Chromium0.00050.0002
Copper0.0020.0009
Cyanide0.00030.0001
Zinc0.0020.0006

(c)Rolling contact cooling water.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc rolled with contact cooling water
Chromium0.0200.009
Copper0.0690.033
Cyanide0.0110.004
Zinc0.0550.023

(d)Drawing spent emulsions.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc drawn with emulsions
Chromium0.0020.0009
Copper0.0080.004
Cyanide0.0010.0005
Zinc0.0060.003

(e)Direct chill casting contact cooling water.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc cast by the direct chill method
Chromium0.0190.008
Copper0.0650.031
Cyanide0.0100.004
Zinc0.0520.021

(f)Stationary casting contact cooling water-subpart H-BAT. There shall be no discharge of process wastewater pollutants.
(g)Heat treatment contact cooling water.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc heat treated
Chromium0.0290.012
Copper0.0980.047
Cyanide0.0160.006
Zinc0.0780.032

(h)Surface treatment spent baths.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc surface treated
Chromium0.0330.014
Copper0.1140.054
Cyanide0.0180.007
Zinc0.0910.038

(i)Surface treatment rinse.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc surface treated
Chromium0.1330.054
Copper0.4570.219
Cyanide0.0720.029
Zinc0.3650.151

(j)Alkaline cleaning spent baths.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc alkaline cleaned
Chromium0.0020.0006
Copper0.0050.002
Cyanide0.00070.0003
Zinc0.0040.002

(k)Alkaline cleaning rinse.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc alkaline cleaned
Chromium0.6260.254
Copper2.171.03
Cyanide0.3380.135
Zinc1.730.710

(l)Sawing or grinding spent emulsions.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc sawed or ground with emulsions
Chromium0.0090.004
Copper0.0310.015
Cyanide0.0050.002
Zinc0.0250.010

(m)Electrocoating rinse.

Subpart H-BAT

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/off-kg (pounds per million off-pounds) of zinc electrocoated
Chromium0.0850.035
Copper0.2930.140
Cyanide0.0460.019
Zinc0.2340.096

(n)Degreasing spent solvents-subpart H-BAT. There shall be no discharge or process wastewater pollutants.

40 C.F.R. §471.82

50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986