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
Lead	0.000526	0.000175
Zinc	0.000701	0.000234

(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
Lead	0.000169	0.0000563
Zinc	0.000225	0.0000751

(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
Lead	0.000338	0.000113
Zinc	0.000451	0.000150

(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
Lead	0.000939	0.000313
Zinc	0.00125	0.000417

(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
Lead	0.0368	0.0123
Zinc	0.0491	0.0164

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
Lead	0.000920	0.000307
Zinc	0.00123	0.000409

(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
Lead	0.000526	0.000175
Zinc	0.000701	0.000234

(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
Lead	0.00192	0.000638
Zinc	0.00255	0.000851

(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
Lead	0.0368	0.0123
Zinc	0.0491	0.0164

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
Lead	0.245	0.0819
Zinc	0.327	0.109

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
Chromium	0.00213	0.000852
Nickel	0.00192	0.000638

(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
Chromium	0.000960	0.000384
Nickel	0.000864	0.000288

(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
Chromium	0.00626	0.00250
Nickel	0.00563	0.00188

(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
Chromium	0.00192	0.000768
Nickel	0.00173	0.000576

(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
Chromium	0.00322	0.00129
Nickel	0.00289	0.000964

(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
Chromium	0.0819	0.0327
Nickel	0.0735	0.0245

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.