CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS (Parts 400–471) > PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY > SUBPART C—Ferrous Casting Subcategory (§464.30 to §464.37) > 464.34—New source performance standards.

464.34—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/1,000 kkg or lb/million lb of sand reclaimed; 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 Cleaning Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
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) 0.0129 0.0071
Lead (T) 0.0237 0.0116
Zinc (T) 0.0437 0.0165
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) 0.29 0.16 0.0029
Lead (T) 0.53 0.26 0.0067
Zinc (T) 0.98 0.37 0.0116
Oil and grease 30 10 0.223
TTS 15 12 0.116
pH (3) (3) (3)
1 kg/1000 kkg (pounds per million pounds) of metal poured.
2 These concentrations must be multiplied by the ratio of (5.33/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.
(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.
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) 0.0129 0.0071
Lead (T) 0.0353 0.0174
Zinc (T) 0.0656 0.025
Oil and grease 1.34 0.446
TSS 1.7 0.67
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) 0.29 0.16 0.0029
Lead (T) 0.79 0.39 0.0098
Zinc (T) 1.47 0.56 0.0179
Oil and grease 30 10 0.223
TTS 38 15 0.446
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 (5.35/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) Casting Quench Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
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) 0.0138 0.0076
Lead (T) 0.0252 0.0124
Zinc (T) 0.0466 0.0176
Oil and grease 1.43 0.476
TSS 0.713 0.571
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) 0.29 0.16 0.0031
Lead (T) 0.53 0.26 0.0071
Zinc (T) 0.98 0.37 0.0124
Oil and grease 30 10 0.238
TSS 15 12 0.124
pH (3) (3) (3)
1 Kg/1000 kkg (pounds per million pounds) of metal poured.
2 Within the range of 7.0 to 10.0 at all times.
3 These concentrations must be multiplied by the ratio of (5.7/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.
(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.
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) 0.0138 0.0076
Lead (T) 0.0376 0.0185
Zinc (T) 0.0699 0.0266
Oil and grease 1.43 0.476
TSS 1.81 0.713
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) 0.29 0.16 0.0031
Lead (T) 0.79 0.39 0.0105
Zinc (T) 1.47 0.56 0.019
Oil and grease 30 10 0.238
TSS 38 15 0.476
pH (3) (3) (3)
1 Kg/1000 kkg (pounds per million pounds) of metal poured.
2 These concentrations must be multiplied by the ratio of (5.7/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) Dust Collection Scrubber Operations. (1) Applicable to plants that are casting primarily ductible or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
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) 0.218 0.12
Lead (T) 0.398 0.195
Zinc (T) 0.736 0.278
Total Phenols 0.646 0.225
Oil and grease 22.5 7.51
TSS 11.3 9.01
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) 0.29 0.16 0.0488
Lead (T) 0.53 0.26 0.113
Zinc (T) 0.98 0.37 0.195
Total phenols 0.86 0.3 0.15
Oil and grease 30 10 3.76
TSS 15 12 1.95
pH (3) (3) (3)
1 kg/62.3 millions Sm3 (pound per billion SCF) of air scrubbed.
2 Within the range of 7.0 to 10.0 at all times.
3 These concentrations must be multiplied by the ratio of (0.09/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.
(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.
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) 0.218 0.12
Lead (T) 0.593 0.293
Zinc (T) 1.1 0.421
Total phenols 0.656 0.225
Oil and grease 22.5 7.51
TSS 28.5 11.3
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) 0.29 0.16 0.0488
Lead (T) 0.79 0.39 0.165
Zinc (T) 1.47 0.56 0.3
Total phenols 0.86 0.3 0.15
Oil and grease 30 10 3.76
TSS 38 15 7.51
pH (3) (3) (3)
1 kg/62.3 millions Sm3 (pound per billion SCF) of air scrubbed.
2 Within the range of 7.0 to 10.0 at all times.
3 These concentrations must be multiplied by the ratio of (0.09/) where is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.
(d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.
(e) Investment Casting. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
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) 3.19 1.76
Lead (T) 5.84 2.86
Zinc (T) 10.8 4.07
Oil and grease 330 110
TSS 165 132
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) 0.29 0.16 0.716
Lead (T) 0.53 0.26 1.65
Zinc (T) 0.98 0.37 2.86
Oil and grease 30 10 55.1
TSS 15 12 28.6
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 (1,320/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.
(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.
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) 3.19 1.76
Lead (T) 8.7 4.3
Zinc (T) 16.2 6.17
Oil and grease 330 110
TSS 419 165
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) 0.29 0.16 0.716
Lead (T) 0.79 0.39 2.42
Zinc (T) 1.47 0.56 4.41
Oil and grease 30 10 55.1
TSS 38 15 110
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 (1,320/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.
(f) Melting Furnace Scrubber Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed
Copper (T) 1.02 0.561
Lead (T) 1.86 0.911
Zinc (T) 3.44 1.30
Total phenols 3.01 1.05
Oil and grease 105 35
TSS 52.6 42.1
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
(mg/l) 2 (mg/l) 2
Copper (T) 0.29 0.16 0.228
Lead (T) 0.53 0.26 0.526
Zinc (T) 0.98 0.37 0.911
Total phenols 0.86 0.3 0.701
Oil and grease 30 10 17.5
TSS 15 12 9.11
pH (3) (3) (3)
1 kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed.
Code of Federal Regulations 585
2 These concentrations must be multiplied by the ratio of (0.42/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.
(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.
NSPS
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed
Copper (T) 1.02 0.561
Lead (T) 2.77 1.37
Zinc (T) 5.15 1.96
Total phenols 3.01 1.05
Oil and grease 105 35
TSS 133 52.6
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
(mg/l) 2 (mg/l) 2
Copper (T) 0.29 0.16 0.228
Lead (T) 0.79 0.39 0.771
Zinc (T) 1.47 0.56 1.4
Total phenols 0.38 0.3 0.701
Oil and grease 30 10 17.5
TSS 38 15 35
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 (0.42/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.
(g) Mold Cooling Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
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) 0.0428 0.0236
Lead (T) 0.0783 0.0384
Zinc (T) 0.0145 0.0546
Oil and grease 4.43 1.48
TSS 2.22 1.77
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) 1
Copper (T) 0.29 0.16 0.0096
Lead (T) 0.53 0.26 0.0222
Zinc (T) 0.98 0.37 0.0384
Oil and grease 30 10 0.738
TSS 15 12 0.384
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 (17.7/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.
(2) Applicable to plants that are casting primarily steel and to plants that are casting primarily malleable iron where equal to or less than 3,557 tons of metal are poured per year.
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) 0.0428 0.0236
Lead (T) 0.117 0.0576
Zinc (T) 0.217 0.0827
Oil and grease 4.43 1.48
TSS 5.61 2.22
pH (1) (1)
1 Within the range of 7.0 to 10.0 at all times.
Maximum for any 1 day Maxium for monthly average Annual average 1
(mg/1) 2 (mg/l) 2
Copper (T) 0.29 0.16 0.0096
Lead (T) 0.79 0.39 0.0325
Zinc (T) 1.47 0.56 0.0591
Oil and grease 30 10 0.738
TSS 38 15 1.48
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 (17.7/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.
(h) Slag Quench Operations. (1) Applicable to plants that are casting primarily ductile or gray iron and to plants that are casting primarily malleable iron where greater than 3,557 tons of metal are poured per year.
NSPS