40 CFR 464.43 - 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 D [§ 464.40 - § 464.47]

§ 464.43 - 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/1) limitations shall apply. Concentration limitations and annual average mass limitations shall only apply to non-continuous dischargers.

(a) 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)	0.0344	0.0187	Lead (T)	0.0237	0.0116	Zinc (T)	0.0339	0.0129

	Maximum for any 1 day	Maximum for monthly average	Annual average 1		(mg/l) 2	(mg/l) 2		Copper (T)	0.77	0.42	0.0076	Lead (T)	0.53	0.26	0.0067	Zinc (T)	0.76	0.29	0.008

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

2 These concentrations must be multiplied by the ratio of (5.34/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(b) Die Casting 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)	0.0066	0.0036	Lead (T)	0.0046	0.0022	Zinc (T)	0.0066	0.0025	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)	0.53	0.26	0.0013	Zinc (T)	0.76	0.29	0.0016	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.

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)	1.56	0.852	Lead (T)	1.07	0.527	Zinc (T)	1.54	0.588	Total phenolse	1.74	0.608

	Maximum for any 1 day	Maximum for monthly average	Annual average 1		(mg/l) 2	(mg/l) 2		Copper (T)	0.77	0.42	0.345	Lead (T)	0.53	0.26	0.304	Zinc (T)	0.76	0.29	0.365	Total phenols	0.86	0.3	0.406

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

2 These concentrations must be multiplied by the ratio of (0.243/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant.

(d) 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)	0.304	0.166	Lead (T)	0.209	0.103	Zinc (T)	0.3	0.114

	Maximum for any 1 day	Maximum for monthly average	Annual average 1		(mg/l) 2	(mg/l) 2		Copper (T)	0.77	0.42	0.067	Lead (T)	0.53	0.26	0.0591	Zinc (T)	0.76	0.29	0.071

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

2 These concentrations must be multiplied by the ratio of (47.3/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 21762, June 16, 1986]