GroundRules
40 CFR 420.102: Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
- PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY
- Subpart J—Cold Forming Subcategory
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
TSS 0.00125 0.000626
O&G 0.000522 0.000209
Chromium 1 0.0000209 0.0000084
Lead 0.0000094 0.0000031
Nickel 1 0.0000188 0.0000063
Zinc 0.0000063 0.0000021
Naphthalene 0.0000021
Tetrachloroethylene 0.0000031
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
TSS 0.00626 0.00313
O&G 0.00261 0.00104
Chromium 1 0.000104 0.0000418
Lead 0.0000469 0.0000156
Nickel 1 0.0000939 0.0000313
Zinc 0.0000313 0.0000104
Naphthalene 0.0000104
Tetrachloroethylene 0.0000156
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
TSS 0.0751 0.0376
O&G 0.0313 0.0125
Chromium 1 0.00125 0.000501
Lead 0.000563 0.000188
Nickel 1 0.00113 0.000376
Zinc 0.000376 0.000125
Naphthalene 0.000125
Tetrachloroethylene 0.000188
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
TSS 0.0225 0.0113
O&G 0.00939 0.00376
Chromium 1 0.000376 0.000150
Lead 0.000169 0.0000563
Nickel 1 0.000338 0.000113
Zinc 0.000113 0.0000376
Naphthalene 0.0000376
Tetrachloroethylene 0.0000563
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
TSS 0.100 0.0501
O&G 0.0417 0.0167
Chromium 1 0.00167 0.000668
Lead 0.000751 0.000250
Nickel 1 0.00150 0.000501
Zinc 0.000501 0.000167
Naphthalene 0.000167
Tetrachloroethylene 0.000250
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
TSS 0.00125 0.000626
O&G 0.000522 0.000209
Chromium 1 0.0000209 0.0000084
Lead 0.0000094 0.0000031
Nickel 1 0.0000188 0.0000063
Zinc 0.0000063 0.0000021
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
TSS 0.00125 0.000626
O&G 0.000522 0.000209
Chromium 1 0.0000209 0.0000084
Lead 0.0000094 0.0000031
Nickel 1 0.0000188 0.0000063
Zinc 0.0000063 0.0000021
Naphthalene 0.0000021
Tetrachloroethylene 0.0000031
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.
Collected 2026-08-27T02:26:04Z. Source file · JSON