The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below.

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

Subpart J

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 dayAverage 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 cotreated 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 propertyNew source performance standards
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.002500.00125
O&G0.001040.000417
Chromium 10.00004180.0000167
Lead0.00001880.0000063
Nickel 10.00003760.0000125
Zinc0.00001250.0000042
Naphthalene0.0000042
Tetrachloroethylene0.0000063
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 propertyNew source performance standards
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.03260.0163
O&G0.01360.00543
Chromium 10.0005430.000217
Lead0.0002440.0000814
Nickel 10.0004880.000163
Zinc0.0001630.0000542
Naphthalene0.0000542
Tetrachloroethylene0.0000813
pH(2)(2)

1 The limitations for chromium and nickel shall be applicable in lieu of those for lead and zinc when cold rolling wastwaters are treated 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 propertyNew source performance standards
Maximum for any 1 dayAverage 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
Tetrachloro-ethylene0.0000156
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 watewaters.

2 Within the range of 6.0 to 9.0.

(5) Direct application—multiple stands.

Subpart J

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.07260.0363
O&G0.03020.0121
Chromium 10.001210.000484
Lead0.0005450.000182
Nickel 10.001090.000363
Zinc0.0003630.000121
Naphthalene0.000121
Tetrachloro-ethylene0.000182
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 watewaters.

2 Within the range of 6.0 to 9.0.

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

Subpart J

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 dayAverage 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 cotreated 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 propertyNew Source Performance Standards
Maximum for any 1 dayAverage 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 cotreated 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 21035, May 17, 1984; 49 FR 24726, June 15, 1984]