Any new source subject to this subpart must achieve the following new source performance standards (NSPS), except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/62.3 million Sm3 or lb/billion SCF of air scrubbed) effluent standards for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass standards and maximum day and maximum for monthly average concentration (mg/l) standards shall apply. Concentration standards and annual average mass standards shall only apply to non-continuous dischargers.

(a) Casting Quench Operations.

NSPS

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
    kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T) 0.0307 0.0168
Lead (T) 0.0211 0.0104
Zinc (T) 0.0303 0.0116
Oil and grease 1.2 0.399
TSS 0.598 0.479
pH (1) (1)

1Within the range of 7.0 to 10.0 at all times.

Open Table
    Maximum for any 1 day Maximum for monthly average Annual average1
    (mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.0068
Lead (T) 0.53 0.26 0.006
Zinc (T) 0.76 0.29 0.0072
Oil and grease 30 10 0.199
TSS 15 12 0.104
pH (3) (3) (3)

1kg/1,000 kkg (pounds per million pounds) of metal poured.

2These concentrations must be multiplied by the ratio of (4.8/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

3Within the range of 7.0 to 10.0 at all times.

(b) Direct Chill Casting Operations.

NSPS

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
    kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T) 0.928 0.506
Lead (T) 0.639 0.314
Zinc (T) 0.916 0.35
Oil and grease 36.2 12.1
TSS 18.1 14.5
pH (1) (1)

1Within the range of 7.0 to 10.0 at all times.

Open Table
    Maximum for any 1 day Maximum for monthly average Annual average1
    (mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.205
Lead (T) 0.53 0.26 0.181
Zinc (T) 0.76 0.29 0.217
Oil and grease 30 10 6.03
TSS 15 12 3.13
pH (3) (3) (3)

1kg/1,000 kkg (pounds per million pounds) of metal poured.

2These concentrations must be multiplied by the ratio of (145/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

3Within the range of 7.0 to 10.0 at all times.

(c) Dust Collection Scrubber Operations.

NSPS

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
    kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed
Copper (T) 0.553 0.301
Lead (T) 0.38 0.187
Zinc (T) 0.545 0.208
Total phenols 0.617 0.215
Oil and grease 21.5 7.18
TSS 10.8 8.61
pH (1) (1)

1Within the range of 7.0 to 10.0 at all times.

Open Table
    Maximum for any 1 day Maximum for monthly average Annual average1
    (mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.122
Lead (T) 0.53 0.26 0.108
Zinc (T) 0.76 0.29 0.129
Total phenols 0.86 0.3 0.144
Oil and grease 30 10 3.59
TSS 15 12 1.87
pH (3) (3) (3)

1kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed.

2These concentrations must be multiplied by the ratio of (0.086/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

3Within the range of 7.0 to 10.0 at all times.

(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.

(e) Investment Casting.

NSPS

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
    kg/1,000 kkg (pounds per millions pounds) of metal poured
Copper (T) 8.48 4.63
Lead (T) 5.84 2.86
Zinc (T) 8.37 3.19
Oil and grease 330 110
TSS 165 132
pH (1) (1)

1Within the range of 7.0 to 10.0 at all times.

Open Table
    Maximum for any 1 day Maximum for monthly average Annual average1
    (mg/l)2 mg/l)2
Copper (T) 0.77 0.42 1.87
Lead (T) 0.53 0.26 1.65
Zinc (T) 0.76 0.29 1.98
Oil and grease 30 10 55.1
TSS 15 12 28.6
pH (3) (3) (3)

1kg/1,000 kkg (pounds per million pounds) of metal poured.

2These concentrations must be multiplied by the ratio of (1,320/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

3Within the range of 7.0 to 10.0 at all times.

(f) Melting Furnace Scrubber Operations.

NSPS

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
    kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed
Copper (T) 1.81 0.988
Lead (T) 1.25 0.612
Zinc (T) 1.79 0.673
Total phenols 2.02 0.706
Oil and grease 70.6 23.5
TSS 35.3 28.2
pH (1) (1)

1Within the range of 7.0 to 10.0 at all times.

Open Table
    Maximum for any 1 day Maximum for monthly average Annual average1
    (mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.4
Lead (T) 0.53 0.26 0.353
Zinc (T) 0.76 0.29 0.424
Total phenols 0.86 0.3 0.471
Oil and grease 30 10 11.8
TSS 15 12 6.12
pH (3) (3) (3)

1kg/62.3 Sm3 (pounds per billion SCF) of air scrubbed.

2These concentrations must be multiplied by the ratio of (0.282/x) where x is the actual normalized process waste-water flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

3Within the range of 7.0 to 10.0 at all times.

(g) Mold Cooling Operations.

NSPS

Open Table
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
    kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T) 0.392 0.214
Lead (T) 0.27 0.132
Zinc (T) 0.387 0.148
Oil and grease 15.3 5.09
TSS 7.63 6.11
pH (1) (1)

1Within the range of 7.0 to 10.0 at all times.

Open Table
    Maximum for any 1 day Maximum for monthly average Annual average1
    (mg/1)2 (mg/1)2
Copper (T) 0.77 0.42 0.0865
Lead (T) 0.53 0.26 0.0763
Zinc (T) 0.76 0.29 0.0916
Oil and grease 30 10 2.54
TSS 15 12 1.32
pH (3) (3) (3)

1kg/1,000 kkg (pounds per million pound) of metal poured.

2These concentrations must be multiplied by the ratio of (61/x) where x is the actual normalized process waste-water flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

3Within the range of 7.0 to 10.0 at all times.

[50 FR 45247, Oct. 30, 1985; 51 FR 21761, June 16, 1986]


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