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Electronic Code of Federal Regulations

e-CFR Data is current as of November 20, 2014

Title 40Chapter ISubchapter NPart 420Subpart I → §420.97


Title 40: Protection of Environment
PART 420—IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY
Subpart I—Acid Pickling Subcategory


§420.97   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) Sulfuric acid pickling (spent acid solutions and rinse waters)—(1) Rod, wire and coil.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.08190.0350
O&G10.03500.0117
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(2) Bar, billet and bloom.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.02630.0113
O&G10.01130.00376
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(3) Strip, sheet and plate.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.05260.0225
O&G10.02250.00751
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(4) Pipe, tube and other products.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.1460.0626
O&G10.06260.0209
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(5) Fume scrubbers.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kilograms per day
TSS5.722.45
O&G12.450.819
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

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

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

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.1430.0613
O&G10.06130.0204
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(2) Strip, sheet and plate.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.08190.0350
O&G10.03500.0117
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(3) Pipe, tube and other products.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.2980.128
O&G10.1280.0426
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0

(4) Fume scrubbers.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kilograms per day
TSS5.722.45
O&G12.450.819
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

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

(5) Acid regeneration (absorber vent scrubber).

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kilograms per day
TSS38.216.3
O&G116.35.45
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

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

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

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.1490.0638
O&G10.06380.0213
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(2) Bar, billet, and bloom.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.06720.0288
O&G10.02880.00960
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

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

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.4380.188
O&G10.1880.0626
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(4) Strip, sheet and plate—batch.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.1340.0576
O&G10.05760.0192
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(5) Pipe, tube, and other products.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.2250.0964
O&G10.09640.0321
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

(6) Fume scrubbers.

Subpart I

Pollutant or pollutant propertyBCT effluent limitations
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kilograms per day
TSS5.722.45
O&G12.450.819
pH(2)(2)

1The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.

2Within the range of 6.0 to 9.0.

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

[47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982]



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