40 CFR 464.13 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

View all text of Subpart A [§ 464.10 - § 464.17]

§ 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 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.

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

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

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

2These concentrations must be multiplied by the ratio of (12/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.

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

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

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

2These concentrations must be multiplied by the ratio of (1.45/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

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

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

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

2 These 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.

(d) Dust Collection Scrubber Operations.

BAT Effluent Limitations

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)	0.231	0.126	Lead (T)	0.237	0.117	Zinc (T)	0.343	0.129	Total Phenols	0.258	0.09

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

1 kg/62.3 million Sm 3 (lb per billion SCF) of air scrubbed.

2 These concentrations must be multiplied by the ratio of (0.036/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

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

(f) Investment Casting.

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

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

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.

(g) Melting Furnace Scrubber Operations.

BAT Effluent Limitations

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)	3.01	1.64	Lead (T)	3.09	1.52	Zinc (T)	4.45	1.68	Total phenols	3.36	1.17

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

1 kg/62.3 million Sm 3 (pounds per billion SCF) of air scrubbed

2 These concentrations must be multiplied by the ratio of (0.468/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant.

(h) Mold Cooling Operations.

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

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

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

2 These concentrations must be multiplied by the ratio of (46.3/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

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