40 CFR 461.31 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

§ 461.31 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 C—Closed Formation—Double Fill, or Fill and Dump.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.86 0.45
Lead 0.19 0.090
Iron 0.54 0.27
Oil and grease 9.00 5.40
TSS 18.45 8.78
pH (1) (1)
(2) Subpart C—Open Formation—Dehydrated.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 20.99 11.05
Lead 4.64 2.21
Iron 16.13 6.74
Oil and grease 221.00 132.60
TSS 453.05 215.47
pH (1) (1)
(3) Subpart C—Open Formation—Wet.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.10 0.05
Lead 0.02 0.01
Iron 0.06 0.03
Oil and grease 1.06 0.64
TSS 2.17 1.03
pH (1) (1)
(4) Subpart C—Plate Soak.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.040 0.020
Lead 0.009 0.004
Iron 0.030 0.010
Oil and grease 0.420 0.250
TSS 0.860 0.410
pH (1) (1)
(5) Subpart C—Battery Wash (with Detergent).
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 1.71 0.90
Lead 0.38 0.18
Iron 1.08 0.55
Oil and grease 18.00 10.80
TSS 36.90 17.55
pH (1) (1)
(6) Subpart C—Battery Wash (Water Only).
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 1.12 0.59
Lead 0.25 0.12
Iron 0.71 0.36
Oil and grease 11.80 7.08
TSS 24.19 11.51
pH (1) (1)
(7) Subpart C—Direct Chill Lead Casting.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.00040 0.00020
Lead 0.00008 0.00004
Iron 0.00020 0.00010
Oil and grease 0.00400 0.00200
TSS 0.00800 0.00300
pH (1) (1)
(8) Subpart C—Mold Release Formulation.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.011 0.006
Lead 0.002 0.001
Iron 0.007 0.004
Oil and grease 0.120 0.072
TSS 0.246 0.117
pH (1) (1)
(9) Subpart C—Truck Wash.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead in trucked batteries
English units—pounds per 1,000,000 pounds of lead in trucked batteries
Copper 0.026 0.014
Lead 0.005 0.002
Iron 0.016 0.008
Oil and grease 0.280 0.168
TSS 0.574 0.273
pH (1) (1)
(10) Subpart C—Laundry.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.21 0.11
Lead 0.05 0.02
Iron 0.13 0.07
Oil and grease 2.18 1.31
TSS 4.47 2.13
pH (1) (1)
(11) Subpart C—Miscellaneous Wastewater Streams.
BPT Effluent Limitations
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
1 Within the range of 7.5 to 10.0 at all times.
Metric units—mg/kg of lead used
English units—pounds per 1,000,000 pounds of lead used
Copper 0.81 0.43
Lead 0.18 0.09
Iron 0.51 0.26
Oil and grease 8.54 5.12
TSS 17.51 8.33
pH (1) (1)
(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.
[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]

Title 40 published on 2014-07-01

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