40 CFR 471.83: New source performance standards (NSPS).

Any new source subject to this subpart must achieve the following new source performance standards (NSPS):

(a) Rolling spent neat oils—subpart H—NSPS. There shall be no discharge of process wastewater pollutants.

(b) Rolling spent emulsions.

Subpart H—NSPS

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

Chromium 0.0005 0.0002

Copper 0.002 0.0009

Cyanide 0.0003 0.0001

Zinc 0.002 0.0006

Oil and grease 0.014 0.014

TSS 0.021 0.017

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(c) Rolling contact cooling water.

Subpart H—NSPS

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

Chromium 0.020 0.009

Copper 0.069 0.037

Cyanide 0.011 0.004

Zinc 0.055 0.023

Oil and grease 0.536 0.536

TSS 0.804 0.643

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(d) Drawing spent emulsions.

Subpart H—NSPS

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

Chromium 0.002 0.0009

Copper 0.008 0.004

Cyanide 0.001 0.0005

Zinc 0.006 0.003

Oil and grease 0.058 0.058

TSS 0.087 0.070

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times

(e) Direct chill casting contact cooling water.

Subpart H—NSPS

Pollutant or pollutant property Maximum for any one day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zinc cast by the direct chill method

Chromium 0.019 0.008

Copper 0.065 0.031

Cyanide 0.010 0.004

Zinc 0.052 0.021

Oil and grease 0.505 0.505

TSS 0.758 0.606

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(f) Stationary casting contact cooling water—subpart H—NSPS. There shall be no discharge of process wastewater pollutants.

(g) Heat treatment contact cooling water.

Subpart H—NSPS

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

Chromium 0.029 0.012

Copper 0.098 0.047

Cyanide 0.016 0.006

Zinc 0.078 0.032

Oil and grease 0.763 0.763

TSS 1.15 0.916

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(h) Surface treatment spent baths.

Subpart H—NSPS

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

Chromium 0.033 0.014

Copper 0.114 0.054

Cyanide 0.018 0.007

Zinc 0.091 0.038

Oil and grease 0.887 0.887

TSS 1.33 1.07

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(i) Surface treatment rinse.

Subpart H—NSPS

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

Chromium 0.133 0.054

Copper 0.459 0.219

Cyanide 0.072 0.029

Zinc 0.365 0.151

Oil and grease 3.58 3.58

TSS 5.37 4.30

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(j) Alkaline cleaning spent baths.

Subpart H—NSPS

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

Chromium 0.002 0.0006

Copper 0.005 0.002

Cyanide 0.0007 0.0003

Zinc 0.004 0.002

Oil and grease 0.036 0.036

TSS 0.054 0.043

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(k) Alkaline cleaning rinse.

Subpart H—NSPS

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

Chromium 0.626 0.259

Copper 2.17 1.03

Cyanide 0.338 0.135

Zinc 1.73 0.710

Oil and grease 16.9 16.9

TSS 25.4 20.3

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(l) Sawing or grinding spent emulsions.

Subpart H—NSPS

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

Chromium 0.009 0.004

Copper 0.031 0.015

Cyanide 0.005 0.002

Zinc 0.025 0.010

Oil and grease 0.235 0.235

TSS 0.357 0.286

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times.

(m) Electrocoating rinse.

Subpart H—NSPS

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average

mg/off-kg (pounds per million off-pounds) of zinc electrocoated

Chromium 0.085 0.035

Copper 0.293 0.140

Cyanide 0.046 0.019

Zinc 0.234 0.096

Oil and grease 2.29 2.29

TSS 3.44 2.75

pH (1) (1)

1 Within the range of 7.5 to 10.0 at all times

(n) Degreasing spent solvents—subpart H—NSPS. There shall be no discharge of process wastewater pollutants.