40 CFR 464.44: New source performance standards.

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 Sm 3 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

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) 0.0344 0.0187

Lead (T) 0.0237 0.0116

Zinc (T) 0.0339 0.0129

Oil and grease 1.34 0.446

TSS 0.67 0.536

pH (1) (1)

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

Maximum for any 1 day Maximum for monthly average Annual average 1

(mg/l)2 (mg/l)2

Copper (T) 0.77 0.42 0.0076

Lead (T) 0.53 0.26 0.0067

Zinc (T) 0.76 0.29 0.008

Oil and grease 30 10 0.223

TSS 15 12 0.116

pH (3) (3) (3)

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

2 These concentrations must be multiplied by the ratio of (5.34/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

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

(b) Die Casting Operations.

NSPS

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) 0.0066 0.0036

Lead (T) 0.0046 0.0022

Zinc (T) 0.0066 0.0025

Total phenols 0.0074 0.0026

Oil and grease 0.259 0.0864

TSS 0.13 0.104

pH (1) (1)

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

Maximum for any 1 day Maximum for monthly average Annual average 1

(mg/l) 2 (mg/l) 2

Copper (T) 0.77 0.42 0.0015

Lead (T) 0.53 0.26 0.0013

Zinc (T) 0.76 0.29 0.0016

Total phenols 0.86 0.3 0.0017

Oil and grease 30 10 0.0432

TSS 15 12 0.0225

pH (3) (3) (3)

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

2 These concentrations must be multiplied by the ratio of (1.04/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

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

(c) Melting Furnace Scrubber Operations.

NSPS

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) 1.56 0.852

Lead (T) 1.07 0.527

Zinc (T) 1.54 0.588

Total phenols 1.74 0.608

Oil and grease 60.8 20.3

TSS 30.4 24.3

pH (1) (1)

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

Maximum for any 1 day Maximum for monthly average Annual average 1

(mg/l)2 (mg/l)2

Copper (T) 0.77 0.42 0.345

Lead (T) 0.53 0.26 0.304

Zinc (T) 0.76 0.29 0.365

Total phenols 0.86 0.3 0.406

Oil and grease 30 10 10.1

TSS 15 12 5.27

pH (3) (3) (3)

1 kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed.

2 These concentrations must be multiplied by the ratio of (0.243/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

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

(d) Mold Cooling Operations.

NSPS

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) 0.304 0.166

Lead (T) 0.209 0.103

Zinc (T) 0.3 0.114

Oil and grease 11.8 3.94

TSS 5.91 4.73

pH (1) (1)

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

Maximum for any 1 day Maximum for monthly average Annual average 1

(mg/l) 2 (mg/l) 2

Copper (T) 0.77 0.42 0.067

Lead (T) 0.53 0.26 0.0591

Zinc (T) 0.76 0.29 0.071

Oil and grease 30 10 1.97

TSS 15 12 1.03

pH (3) (3) (3)

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

2 These concentrations must be multiplied by the ratio of (47.3/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

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