Collapse to view only § 420.102 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

§ 420.100 - Applicability; description of the cold forming subcategory.

(a) The provisions of this subpart are applicable to discharges and to the introduction of pollutants into publicly owned treatment works from cold rolling and cold working pipe and tube operations in which unheated steel is passed through rolls or otherwise processed to reduce its thickness, to produce a smooth surface, or to develop controlled mechanical properties in the steel.

(b) The limitations and standards set out below for cold worked pipe and tube operations shall be applicable only where cold worked pipe and tube wastewaters are discharged at steel plant sites. No limitations are applicable or allowable where these wastewaters are hauled off-site for disposal or are otherwise not discharged at steel plant sites. The limitations and standards set out below for cold worked pipe and tube operations shall be applicable only to the blowdown of soluble oil or water solutions used in cold worked pipe and tube forming operations. Limitations for other wastewater sources from these operations must be established on a site-specific basis.

[47 FR 23284, May 27, 1982, as amended at 49 FR 21034, May 17, 1984]

§ 420.101 - Specialized definitions.

(a) The term recirculation means those cold rolling operations which include recirculation of rolling solutions at all mill stands.

(b) The term combination means those cold rolling operations which include recirculation of rolling solutions at one or more mill stands, and once-through use of rolling solutions at the remaining stand or stands.

(c) The term direct application means those cold rolling operations which include once-through use of rolling solutions at all mill stands.

(d) The term single stand means those recirculation or direct application cold rolling mills which include only one stand of work rolls.

(e) The term multiple stands means those recirculation or direct application cold rolling mills which include more than one stand of work rolls.

(f) The term cold worked pipe and tube means those cold forming operations that process unheated pipe and tube products using either water or oil solutions for cooling and lubrication.

§ 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 Naphthalene0.0000021Tetrachloroethylene0.0000031pH( 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 Naphthalene0.0000104Tetrachloroethylene0.0000156pH( 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 Naphthalene0.000125Tetrachloroethylene0.000188pH( 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 Naphthalene0.0000376Tetrachloroethylene0.0000563pH( 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 Naphthalene0.000167Tetrachloroethylene0.000250pH( 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 Naphthalene0.0000021Tetrachloroethylene0.0000031pH( 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]

§ 420.103 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).

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 available technology economically achievable.

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

Subpart J

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

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) Recirculation—multiple stands.

Subpart J

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

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.

(3) Combination.

Subpart J

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

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.

(4) Direct application—single stand.

Subpart J

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

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.

(5) Direct application—multiple stands.

Subpart J

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

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.

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

Subpart J

Pollutant or pollutant property BAT effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021

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) Using oil solutions.

Subpart J

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

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.

[47 FR 23284, May 27, 1982, as amended at 49 FR 21035, May 17, 1984]

§ 420.104 - New source performance standards (NSPS).

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 property New source performance standards 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 Naphthalene0.0000021Tetrachloroethylene0.0000031pH( 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 property New source performance standards Maximum for any 1 day Average 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 Naphthalene0.0000042Tetrachloroethylene0.0000063pH( 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 New source performance standards Maximum for any 1 day Average 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 Naphthalene0.0000542Tetrachloroethylene0.0000813pH( 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 property New source performance standards 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 Naphthalene0.0000104Tetrachloro-ethylene0.0000156pH( 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 property New source performance standards Maximum for any 1 day Average 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 Naphthalene0.000121Tetrachloro-ethylene0.000182pH( 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 property New source performance standards 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 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 property New Source Performance Standards 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 Naphthalene0.0000021Tetrachloroethylene0.0000031pH( 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]

§ 420.105 - Pretreatment standards for existing sources (PSES).

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources.

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

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021 Naphthalene0.0000021Tetrachloroethylene0.0000031

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) Recirculation—multiple stands.

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.0001040.0000418 Lead0.00004690.0000156 Nickel 10.00009390.0000313 Zinc0.00003130.0000104 Naphthalene0.0000104Tetrachloroethylene0.0000156

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.

(3) Combination.

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.001250.000501 Lead0.0005630.000188 Nickel 10.001130.000376 Zinc0.0003760.000125 Naphthalene0.000125Tetrachloroethylene0.000188

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.

(4) Direct application—single stand.

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.0003760.000150 Lead0.0001690.0000563 Nickel 10.0003380.000113 Zinc0.0001130.0000376 Naphthalene0.0000376Tetrachloroethylene0.0000563

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.

(5) Direct application—multiple stands.

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.001670.000668 Lead0.0007510.000250 Nickel 10.001500.000501 Zinc0.0005010.000167 Napthalene0.000167Tetrachloroethylene0.000250

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.

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

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days kg/kkg (pounds per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021

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) Using oil solutions.

Subpart J

Pollutant or pollutant property Pretreatment standards for existing sources Maximum for any 1 day Average of daily values for 30 consecutive days kg/kkg (pounds per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021 Naphthalene0.0000021Tetrachloroethylene0.0000031

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.

[47 FR 23284, May 27, 1982, as amended at 49 FR 21035, May 17, 1984]

§ 420.106 - Pretreatment standards for new sources (PSNS).

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources.

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

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021 Naphthalene0.0000021Tetrachloroethylene0.0000031

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) Recirculation—multiple stands.

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.00004180.0000167 Lead0.00001880.0000063 Nickel 10.00003760.0000125 Zinc0.00001250.0000042 Naphthalene0.0000042Tetrachloroethylene0.0000063

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.

(3) Combination.

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg (pounds per 1,000 lb) of product Chromium 10.0005430.000217 Lead0.0002440.0000814 Nickel 10.0004880.000163 Zinc0.0001630.0000542 Naphthalene0.0000542Tetrachloroethylene0.0000813

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.

(4) Direct application—single stand.

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg pounds per 1,000 lb) of product Chromium 10.0001040.0000418 Lead0.00004690.0000156 Nickel 10.00009390.0000313 Zinc0.00003130.0000104 Naphthalene0.0000104Tetrachloroethylene0.0000156

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.

(5) Direct application—multiple stands.

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any 1 day Average of daily values for 30 consecutive days Kg/kkg pounds per 1,000 lb) of product Chromium 10.001210.000484 Lead0.0005450.000182 Nickel 10.001090.000363 Zinc0.0003630.000121 Naphthalene0.000121Tetrachloroethylene0.000182

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.

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

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any one day Average of daily values for 30 consecutive days kg/kkg (pounds per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021

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) Using oil solutions.

Subpart J

Pollutant or pollutant property Pretreatment standards for new sources Maximum for any one day Average of daily values for 30 consecutive days kg/kkg (pound per 1,000 lb) of product Chromium 10.00002090.0000084 Lead0.00000940.0000031 Nickel 10.00001880.0000063 Zinc0.00000630.0000021 Naphthalene0.0000021Tetrachloroethylene0.0000031

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 wastewasters.

[47 FR 23284, May 27, 1982, as amended at 49 FR 21035, May 17, 1984]

§ 420.107 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

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 conventional technology.

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

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0.

(2) Recirculation—multiple stands.

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0.

(3) Combination.

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0.

(4) Direct application—single stand.

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0.

(5) Direct application—multiple stands.

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0.

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

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0

(2) Using oil solutions.

Subpart J

Pollutant or pollutant property BCT 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 pH( 1)( 1)

1 Within the range of 6.0 to 9.0

[47 FR 23284, May 27, 1982, as amended at 49 FR 21035, May 17, 1984]