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