§ 461.11 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

§ 461.11 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

(a) 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 practicable control technology currently available:

(1) Subpart A - Pasted and Pressed Powder Anodes.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of cadmium
	English units - pounds per 1,000,000 pounds of cadmium
Cadmium	0.92	0.41
Nickel	5.18	3.43
Zinc	3.94	1.65
Cobalt	0.57	0.24
Oil and grease	54.00	32.40
TSS	111.00	52.65
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(2) Subpart A - Electrodeposited Anodes.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of cadmium
	English units - pounds per 1,000,000 pounds of cadmium
Cadmium	237.0	104.6
Nickel	1,338.2	885.2
Zinc	1,017.6	425.2
Cobalt	146.4	62.7
Oil and grease	13,940.0	8,364.0
TSS	28,577.0	13,592.0
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(3) Subpart A - Impregnated Anodes.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of cadmium
	English units - pounds per 1,000,000 pounds of cadmium
Cadmium	339.3	149.7
Nickel	1,916.2	1,267.5
Zinc	1,457.1	608.8
Cobalt	209.6	89.8
Oil and grease	19,960.0	11,976.0
TSS	40,918.0	19,461.0
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(4) Subpart A - Nickel Electrodeposited Cathodes.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of nickel applied
	English units - pounds per 1,000,000 pounds of nickel applied
Cadmium	193.5	85.4
Nickel	1,092.5	722.6
Zinc	830.7	347.1
Cobalt	119.5	51.2
Oil and grease	11,380.0	6,828.0
TSS	23,329.0	11,095.5
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(5) Subpart A - Nickel Impregnated Cathodes.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of nickel applied
	English units - pounds per 1,000,000 pounds of nickel applied
Cadmium	557.6	246.0
Nickel	3,148.8	2,082.8
Zinc	2,394.4	1,000.4
Cobalt	344.4	147.6
Oil and grease	32,800.0	19,680.0
TSS	67,240.0	31,980.0
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(6) Subpart A - Miscellaneous Wastewater Streams.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of cells produced
	English units - pounds per 1,000,000 pounds of cells produced
Cadmium	6.29	2.77
Nickel	35.54	23.50
Zinc	27.02	11.29
Cobalt	3.89	1.66
Oil and grease	370.20	222.12
TSS	758.91	360.94
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(7) Subpart A - Cadmium Powder Production.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of cadmium powder produced
	English units - pounds per 1,000,000 pounds of cadmium powder produced
Cadmium	22.34	9.86
Nickel	126.14	83.44
Zinc	95.92	40.08
Cobalt	13.80	5.91
Oil and grease	1,314.00	788.40
TSS	2,693.00	1,281.20
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(8) Subpart A - Silver Powder Production.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of silver powder produced
	English units - pounds per 1,000,000 pounds of silver powder produced
Cadmium	7.21	3.18
Nickel	40.70	26.92
Silver	8.69	3.61
Zinc	30.95	12.93
Cobalt	4.45	1.91
Oil and grease	424.00	254.40
TSS	869.20	413.40
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(9) Subpart A - Cadmium Hydroxide Production.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of cadmium used
	English units - pounds per 1,000,000 pounds of cadmium used
Cadmium	0.31	0.14
Nickel	1.73	1.14
Zinc	1.31	0.55
Cobalt	0.19	0.08
Oil and grease	18.00	10.80
TSS	36.90	17.60
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(10) Subpart A - Nickel Hydroxide Production.

BPT Effluent Limitations

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	Metric units - mg/kg of nickel used
	English units - pounds per 1,000,000 pounds of nickel used
Cadmium	37.4	16.5
Nickel	211.2	139.7
Zinc	160.6	67.1
Cobalt	23.1	9.9
Oil and grease	2,200.0	1,320.0
TSS	4,510.0	2,145.0
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.