40 C.F.R. § 420.95

Current through September 30, 2024
Section 420.95 - 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)Sulfuric acid (spent acid solutions and rinse waters) -
(1)Rod, wire, and coil.

Subpart I

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
Lead0.0005260.000175
Zinc0.0007010.000234

(2)Bar, billet, and bloom.

Subpart I

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
Lead0.0001690.0000563
Zinc0.0002250.0000751

(3)Strip, sheet, and plate.

Subpart I

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
Lead0.0003380.000113
Zinc0.0004510.000150

(4)Pipe, tube, and other products.

Subpart I

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
Lead0.0009390.000313
Zinc0.001250.000417

(5)Fume scrubber.

Subpart I

Pollutant or pollutant property Pretreatment standards for existing sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kilograms per day
Lead0.03680.0123
Zinc0.04910.0164

Note: The above limitations are applicable to each fume scrubber associated with sulfuric acid pickling operations.

(b)Hydrochloric acid pickling (spent acid solutions and rinse waters) -
(1)Rod, wire, and coil.

Subpart I

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
Lead0.0009200.000307
Zinc0.001230.000409

(2)Strip, sheet, and plate.

Subpart I

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
Lead0.0005260.000175
Zinc0.0007010.000234

(3)Pipe, tube, and other products.

Subpart I

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
Lead0.001920.000638
Zinc0.002550.000851

(4)Fume scrubber.

Subpart I

Pollutant or pollutant property Pretreatment standards for existing sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kilograms per day
Lead0.03680.0123
Zinc0.04910.0164

Note: The above limitations shall be applicable for each fume scrubber associated with hydrochloric acid pickling operations.

(5)Acid regeneration (absorber vent scrubber).

Subpart I

Pollutant or pollutant property Pretreatment standards for existing sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kilograms per day
Lead0.2450.0819
Zinc0.3270.109

Note: The above limitations shall be applicable to the absorber vent scrubber wastewater associated with hydrochloric acid regeneration plants.

(c)Combination acid pickling (spent acid solutions and rinse waters) -
(1)Rod, wire, and coil.

Subpart I

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
Chromium0.002130.000852
Nickel0.001920.000638

(2)Bar, billet, and bloom.

Subpart I

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
Chromium0.0009600.000384
Nickel0.0008640.000288

(3)Strip, sheet, and plate-continuous.

Subpart I

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
Chromium0.006260.00250
Nickel0.005630.00188

(4)Strip, sheet, and plate-batch.

Subpart I

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
Chromium0.001920.000768
Nickel0.001730.000576

(5)Pipe, tube, and other products.

Subpart I

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
Chromium0.003220.00129
Nickel0.002890.000964

(6)Fume scrubber.

Subpart I

Pollutant or pollutant property Pretreatment standards for existing sources
Maximum for any 1 day Average of daily values for 30 consecutive days
Kilograms per day
Chromium0.08190.0327
Nickel0.07350.0245

40 C.F.R. §420.95

47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982, as amended at 49 FR 21033, May 17, 1984

The above limitations shall be applicable to each fume scrubber associated with a combination acid pickling operation.