40 CFR 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.