New source performance standards.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Effluent Guidelines and Standards
  6. Metal Molding and Casting Point Source Category
  7. Zinc Casting Subcategory
  8. New source performance standards.

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§ 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 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.

Expand Table

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.

Expand Table
Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.0076
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.

Expand Table

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.

Expand Table
Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.0015
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)

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

2These 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.

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

(c) Melting Furnace Scrubber Operations.

Expand Table

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.

Expand Table
Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.345
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 Sm3 (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.

Expand Table

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.

Expand Table
Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.067
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.

[50 FR 45247, Oct. 30, 1985; 51 FR 21762, June 16, 1986]


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