40 CFR 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 Sm 3 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 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

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

1 kg/1,000 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.

(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) 0.0129 0.0071

Lead (T) 0.0353 0.0174

Zinc (T) 0.0656 0.025

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

1 kg/1,000 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.

(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) 0.0138 0.0076

Lead (T) 0.0252 0.0124

Zinc (T) 0.0466 0.0176

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

1 kg/1,000 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.

(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) 0.0138 0.0076

Lead (T) 0.0376 0.0185

Zinc (T) 0.0699 0.0266

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

1 kg/1,000 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.

(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) 0.218 0.12

Lead (T) 0.398 0.195

Zinc (T) 0.736 0.278

Total phenols 0.646 0.225

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

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

2 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.

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) 0.218 0.12

Lead (T) 0.593 0.293

Zinc (T) 1.1 0.421

Total phenols 0.656 0.225

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

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

2 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.

(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 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

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

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.

(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) 3.19 1.76

Lead (T) 8.7 4.3

Zinc (T) 16.2 6.17

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

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.

(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 property Maximum for any 1 day Maximum for monthly average

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

Copper (T) 1.02 0.561

Lead (T) 1.86 0.911

Zinc (T) 3.44 1.3

Total Phenols 3.01 1.05

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

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

Copper (T) 0.29 0.16 0.228

Lead (T) 0.53 0.26 0.526

Zinc (T) 0.98 0.37 0.911

Total Phenols 0.86 0.3 0.701

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.

(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) 1.02 0.561

Lead (T) 2.77 1.37

Zinc (T) 5.15 1.96

Total Phenols 3.01 1.05

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

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

Copper (T) 0.29 0.16 0.228

Lead (T) 0.79 0.39 0.771

Zinc (T) 1.47 0.56 1.4

Total Phenols 0.86 0.3 0.701

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.

(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 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) 0.145 0.0546

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

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

Copper (T) 0.29 0.16 0.0096

Lead (T) 0.53 0.26 0.0222

Zinc (T) 0.98 0.37 0.0384

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.

(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) 0.0428 0.0236

Lead (T) 0.117 0.0576

Zinc (T) 0.217 0.0827

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

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

Copper (T) 0.29 0.16 0.0096

Lead (T) 0.79 0.39 0.0325

Zinc (T) 1.47 0.56 0.0591

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.

(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 property Maximum for any 1 day Maximum for monthly average

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

Copper (T) 0.0527 0.0291

Lead (T) 0.0964 0.0473

Zinc (T) 0.178 0.0673

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

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

Copper (T) 0.29 0.16 0.0118

Lead (T) 0.53 0.26 0.0273

Zinc (T) 0.98 0.37 0.0473

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

2 These 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 property Maximum for any 1 day Maximum for monthly average

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

Copper (T) 0.0527 0.0291

Lead (T) 0.144 0.0709

Zinc (T) 0.267 0.102

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

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

Copper (T) 0.29 0.16 0.0118

Lead (T) 0.79 0.39 0.04

Zinc (T) 1.47 0.56 0.0728

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

2 These 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) 0.217 0.12

Lead (T) 0.396 0.194

Zinc (T) 0.732 0.276

Total Phenols 0.642 0.224

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

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

Copper (T) 0.29 0.16 0.0485

Lead (T) 0.53 0.26 0.112

Zinc (T) 0.98 0.37 0.194

Total Phenols 0.86 0.3 0.149

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

2 These 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) 0.217 0.12

Lead (T) 0.59 0.291

Zinc (T) 1.1 0.418

Total Phenols 0.642 0.224

PSNS

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

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

Copper (T) 0.29 0.16 0.0485

Lead (T) 0.79 0.39 0.164

Zinc (T) 1.47 0.56 0.299

Total Phenols 0.86 0.3 0.149

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

2 These 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.