Regulations last checked for updates: Nov 24, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024
All TitlesTitle 40Chapter IPart 420Subpart J - Subpart J—Cold Forming Subcategory
View all text of Subpart J [§ 420.100 - § 420.107]
§ 420.102 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

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.

(a) Cold rolling mills—(1) Recirculation—single stand.

Subpart J

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.001250.000626
O&G0.0005220.000209
Chromium 10.00002090.0000084
Lead0.00000940.0000031
Nickel 10.00001880.0000063
Zinc0.00000630.0000021
Naphthalene0.0000021
Tetrachloroethylene0.0000031
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

(2) Recirculation—multiple stands.

Subpart J

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.006260.00313
O&G0.002610.00104
Chromium 10.0001040.0000418
Lead0.00004690.0000156
Nickel 10.00009390.0000313
Zinc0.00003130.0000104
Naphthalene0.0000104
Tetrachloroethylene0.0000156
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

(3) Combination.

Subpart J

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.07510.0376
O&G0.03130.0125
Chromium 10.001250.000501
Lead0.0005630.000188
Nickel 10.001130.000376
Zinc0.0003760.000125
Naphthalene0.000125
Tetrachloroethylene0.000188
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are cotreated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

(4) Direct application—single stand.

Subpart J

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.02250.0113
O&G0.009390.00376
Chromium 10.0003760.000150
Lead0.0001690.0000563
Nickel 10.0003380.000113
Zinc0.0001130.0000376
Naphthalene0.0000376
Tetrachloroethylene0.0000563
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

(5) Direct application—multiple stands.

Subpart J

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.1000.0501
O&G0.04170.0167
Chromium 10.001670.000668
Lead0.0007510.000250
Nickel 10.001500.000501
Zinc0.0005010.000167
Naphthalene0.000167
Tetrachloroethylene0.000250
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastewaters are treated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

(b) Cold worked pipe and tube—(1) Using water.

Subpart J

Pollutant of pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.001250.000626
O&G0.0005220.000209
Chromium 10.00002090.0000084
Lead0.00000940.0000031
Nickel 10.00001880.0000063
Zinc0.00000630.0000021
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold forming wastewaters are treated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

(2) Using oil solutions.

Subpart J

Pollutant or pollutant property BPT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.001250.000626
O&G0.0005220.000209
Chromium 10.00002090.0000084
Lead0.00000940.0000031
Nickel 10.00001880.0000063
Zinc0.00000630.0000021
Naphthalene0.0000021
Tetrachloroethylene0.0000031
pH( 2)( 2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold forming wastewaters are treated with descaling or combination acid pickling wastewaters.

2 Within the range of 6.0 to 9.0.

[47 FR 23284, May 27, 1982, as amended at 49 FR 21034, May 17, 1984; 49 FR 24726, June 15, 1984]
authority: 33 U.S.C. 1311,1314,1316,1317,1318,1342,and
source: 47 FR 23284, May 27, 1982, unless otherwise noted.
cite as: 40 CFR 420.102
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