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

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§ 464.13 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/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.

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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) 0.0771 0.0421
Lead (T) 0.0791 0.039
Zinc (T) 0.114 0.0431
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Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.017
Lead (T) 0.79 0.39 0.022
Zinc (T) 1.14 0.43 0.027

(b) Casting Quench Operations.

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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) 0.0093 0.0051
Lead (T) 0.0096 0.0047
Zinc (T) 0.0138 0.0052
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Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.0021
Lead (T) 0.79 0.39 0.0027
Zinc (T) 1.14 0.43 0.0033

(c) Die Casting Operations.

Expand Table

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) 0.0066 0.0036
Lead (T) 0.0068 0.0034
Zinc (T) 0.0098 0.0037
Total Phenols 0.0074 0.0026
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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) 0.79 0.39 0.0019
Zinc (T) 1.14 0.43 0.0023
Total Phenols 0.86 0.3 0.0017

(d) Dust Collection Scrubber Operations.

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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) 0.231 0.126
Lead (T) 0.237 0.117
Zinc (T) 0.343 0.129
Total Phenols 0.258 0.09
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Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 0.0511
Lead (T) 0.79 0.39 0.0661
Zinc (T) 1.14 0.43 0.0811
Total Phenols 0.86 0.3 0.0601

(e) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters.

(f) Investment Casting.

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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) 8.48 4.63
Lead (T) 8.7 4.3
Zinc (T) 12.6 4.74
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Maximum for any 1 day Maximum for monthly average Annual average1
(mg/l)2 (mg/l)2
Copper (T) 0.77 0.42 1.87
Lead (T) 0.79 0.39 2.42
Zinc (T) 1.14 0.43 2.97

(g) Melting Furnace Scrubber Operations.

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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) 3.01 1.64
Lead (T) 3.09 1.52
Zinc (T) 4.45 1.68
Total phenols 3.36 1.17
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 0.664
Lead (T) 0.79 0.39 0.859
Zinc (T) 1.14 0.43 1.05
Total phenols 0.86 0.3 0.781

(h) Mold Cooling Operations.

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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) 0.297 0.162
Lead (T) 0.305 0.151
Zinc (T) 0.44 0.166
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 0.0656
Lead (T) 0.79 0.39 0.0849
Zinc (T) 1.14 0.43 0.104

[50 FR 45247, Oct. 30, 1985; 51 FR 21760, June 16, 1986]


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