40 CFR 420.77 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

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§ 420.77 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) Primary mills, carbon and specialty—
(1) Without scarfing.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.150 0.0561
O&G 0.0374
pH (1) (1)
(2) With scarfing.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.221 0.0830
O&G 0.0553
pH (1) (1)
(b) Section mills—
(1) Carbon.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.357 0.134
O&G 0.0894
pH (1) (1)
(2) Specialty.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.224 0.0841
O&G 0.0561
pH (1) (1)
(c) Flat mills—
(1) Hot strip and sheet mills, carbon and specialty.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.427 0.160
O&G 0.107
pH (1) (1)
(2) Carbon plate mills.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.227 0.0851
O&G 0.0568
pH (1) (1)
(3) Specialty plate mills.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.100 0.0376
O&G 0.0250
pH (1) (1)
(d) Pipe and tube mills, carbon and specialty.
Subpart G
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.212 0.0795
O&G 0.0530
pH (1) (1)
[47 FR 23284, May 27, 1982, as amended at 47 FR 41739, Sept. 22, 1982]

Title 40 published on 2014-07-01

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