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e-CFR data is current as of November 24, 2020

Title 40Chapter ISubchapter NPart 464Subpart C → §464.33


Title 40: Protection of Environment
PART 464—METAL MOLDING AND CASTING POINT SOURCE CATEGORY
Subpart C—Ferrous Casting Subcategory


§464.33   Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable, 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 Sm3 or lb/billion SCF of air scrubbed) effluent limitations for copper, lead, zinc, and total phenols. For non-continuous dischargers, annual average mass limitations and maximum day and maximum for monthly average concentration (mg/l) limitations shall apply. Concentration limitations and annual average mass limitations 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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.01290.0071
Lead (T)0.02370.0116
Zinc (T)0.04370.0165
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0029
Lead (T)0.530.260.0067
Zinc (T)0.980.370.0116

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.01290.0071
Lead (T)0.03530.0174
Zinc (T)0.06560.025
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0029
Lead (T)0.790.390.0098
Zinc (T)1.470.560.0179

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   kg/100 kkg (pounds per million pounds) of metal poured
Copper (T)0.01380.0076
Lead (T)0.02520.0124
Zinc (T)0.04660.0176
   Maximum for any 1 day Maximum for monthly average Annual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0031
Lead (T)0.530.260.0071
Zinc (T)0.980.370.0124

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

2These 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.

BAT Effluent Limitations

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)0.01380.0076
Lead (T)0.03760.0185
Zinc (T)0.06990.0266
   Maximum for any 1 day Maximum for monthly average Annual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0031
Lead (T)0.790.390.0105
Zinc (T)1.470.560.019

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

2These 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.

(c) Dust Collection 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.

BAT Effluent Limitations

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)0.2180.12
Lead (T)0.3980.195
Zinc (T)0.7360.278
Total phenols0.6460.225
   Maximum for any 1 day Maximum for monthly average Annual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0488
Lead (T)0.530.260.113
Zinc (T)0.980.370.195
Total phenols0.860.30.15

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

2These 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.

BAT Effluent Limitations

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)0.2180.12
Lead (T)0.5930.293
Zinc (T)1.10.421
Total phenols0.6560.225
   Maximum for any 1 day Maximum for monthly average Annual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0488
Lead (T)0.790.390.165
Zinc (T)1.470.560.3
Total phenols0.860.30.15

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)3.191.76
Lead (T)5.842.86
Zinc (T)10.84.07
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.716
Lead (T)0.530.261.65
Zinc (T)0.980.372.86

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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)3.191.76
Lead (T)8.74.3
Zinc (T)16.26.17
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.716
Lead (T)0.790.392.42
Zinc (T)1.470.564.41

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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed
Copper (T)1.020.561
Lead (T)1.860.911
Zinc (T)3.441.3
Total Phenols3.011.05
   Maximum for any 1 day Maximum for monthly average Annual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.228
Lead (T)0.530.260.526
Zinc (T)0.980.370.911
Total Phenols0.860.30.701

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/62.3 million Sm3 (pounds per billion SCF) of air scrubbed
Copper (T)1.020.561
Lead (T)2.771.37
Zinc (T)5.151.96
Total Phenols3.011.05
   Maximum for any 1 day Maximum for monthly average Annual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.228
Lead (T)0.790.390.771
Zinc (T)1.470.561.4
Total Phenols0.860.30.701

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.04280.0236
Lead (T)0.07830.0384
Zinc (T)0.1450.0546
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0096
Lead (T)0.530.260.0222
Zinc (T)0.980.370.0384

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.04280.0236
Lead (T)0.1170.0576
Zinc (T)0.2170.0827
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0096
Lead (T)0.790.390.0325
Zinc (T)1.470.560.0591

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

2These 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.

(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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.05270.0291
Lead (T)0.09640.0473
Zinc (T)0.1780.0673
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0118
Lead (T)0.530.260.0273
Zinc (T)0.980.370.0473

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

2These concentrations must be multiplied by the ratio of (21.8/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.

BAT Effluent Limitations

Pollutant or pollutant propertyMaximum for any 1 dayMaximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of metal poured
Copper (T)0.05270.0291
Lead (T)0.1440.0709
Zinc (T)0.2670.102
   Maximum for any 1 dayMaximum for monthly averageAnnual average1
   (mg/l)2(mg/l)2
Copper (T)0.290.160.0118
Lead (T)0.790.390.04
Zinc (T)1.470.560.0728

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

2These concentrations must be multiplied by the ratio of (21.8/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(i) Wet Sand Reclamation Operations. (1) Applicable to plants that are casting primarily ductible or gray iron and to plants that are casting malleable iron where greater than 3,557 tons of metal are poured per year.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of sand reclaimed
Copper (T)0.2170.12
Lead (T)0.3960.194
Zinc (T)0.7320.276
Total Phenols0.6420.224
   Maximum for any 1 day Maximum for monthly average Annual average1
  (mg/l)2(mg/l)2
Copper (T)0.290.160.0485
Lead (T)0.530.260.112
Zinc (T)0.980.370.194
Total Phenols0.860.30.149

1kg/1000 kkg (pounds per million pounds) of sand reclaimed.

2These concentrations must be multiplied by the ratio of (89.5/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of sand reclaimed) 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.

BAT Effluent Limitations

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
   kg/1,000 kkg (pounds per million pounds) of sand reclaimed
Copper (T)0.2170.12
Lead (T)0.590.291
Zinc (T)1.10.418
Total Phenols0.6420.224

PSNS

   Maximum for any 1 day Maximum for monthly average Annual average1
  (mg/l)2(mg/l)2
Copper (T)0.290.160.0485
Lead (T)0.790.390.164
Zinc (T)1.470.560.299
Total Phenols0.860.30.149

1kg/1000 kkg (pounds per million pounds) of sand reclaimed.

2These concentrations must be multiplied by the ratio of (89.5/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of sand reclaimed) for a specific plant.

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

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