40 C.F.R. § 420.74

Current through September 30, 2024
Section 420.74 - 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)Primary mills, carbon and specialty -
(1)Without scarfing.

Subpart G

Pollutant or pollutant propertyNew 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
TSS0.01500.00563
O&G0.00373
pH(1)(1)

1 Within the range of 6.0 to 9.0.

(2)With scarfing.

Subpart G

Pollutant or pollutant propertyNew 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
TSS0.02340.00876
O&G0.00584
pH(1)(1)

1 Within the range of 6.0 to 9.0.

(b)Section mills -
(1)Carbon.

Subpart G

Pollutant or pollutant propertyNew 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
TSS0.03340.0125
O&G0.00834
pH(1)(1)

1 Within the range of 6.0 to 9.0.

(2)Specialty.

Subpart G

Pollutant or pollutant propertyNew 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
TSS0.02170.00813
O&G0.00542
pH(1)(1)

1 Within the range of 6.0 to 9.0.

(c)Flat mills -
(1)Hot strip and sheet mills, carbon and specialty.

Subpart G

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of products
TSS0.04350.0163
O&G0.0109
pH(1)(1)

1 Within the range of 6.0 to 9.0

(2)Carbon plate mills.

Subpart G

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of products
TSS0.02340.00876
O&G0.00584
pH(1)(1)

1 Within the range of 6.0 to 9.0

(3)Specialty plate mills.

Subpart G

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of products
TSS0.01000.00375
O&G0.00250
pH(1)(1)

1 Within the range of 6.0 to 9.0

(d)Pipe and tube mills, carbon and specialty.

Subpart G

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 day Average of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of products
TSS0.03690.0138
O&G0.00917
pH(1)(1)

1 Within the range of 6.0 to 9.0

40 C.F.R. §420.74