40 CFR 420.97 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT).

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§ 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 property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0819 0.0350
O&G 1 0.0350 0.0117
pH (2) (2)
(2) Bar, billet and bloom.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0263 0.0113
O&G 1 0.0113 0.00376
pH (2) (2)
(3) Strip, sheet and plate.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0526 0.0225
O&G 1 0.0225 0.00751
pH (2) (2)
(4) Pipe, tube and other products.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.146 0.0626
O&G 1 0.0626 0.0209
pH (2) (2)
(5) Fume scrubbers.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kilograms per day
TSS 5.72 2.45
O&G 1 2.45 0.819
pH (2) (2)
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 property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.143 0.0613
O&G 1 0.0613 0.0204
pH (2) (2)
(2) Strip, sheet and plate.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0819 0.0350
O&G 1 0.0350 0.0117
pH (2) (2)
(3) Pipe, tube and other products.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.298 0.128
O&G 1 0.128 0.0426
pH (2) (2)
(4) Fume scrubbers.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kilograms per day
TSS 5.72 2.45
O&G 1 2.45 0.819
pH (2) (2)
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 property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kilograms per day
TSS 38.2 16.3
O&G 1 16.3 5.45
pH (2) (2)
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 property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.149 0.0638
O&G 1 0.0638 0.0213
pH (2) (2)
(2) Bar, billet, and bloom.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.0672 0.0288
O&G 1 0.0288 0.00960
pH (2) (2)
(3) Strip, sheet, and plate—continuous.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.438 0.188
O&G 1 0.188 0.0626
pH (2) (2)
(4) Strip, sheet and plate—batch.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.134 0.0576
O&G 1 0.0576 0.0192
pH (2) (2)
(5) Pipe, tube, and other products.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kg/kkg (pounds per 1,000 lb) of product
TSS 0.225 0.0964
O&G 1 0.0964 0.0321
pH (2) (2)
(6) Fume scrubbers.
Subpart I
Pollutant or pollutant property BCT effluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days
1 The limitations for oil and grease shall be applicable when acid pickling wastewaters are treated with cold rolling wastewaters.
2 Within the range of 6.0 to 9.0.
Kilograms per day
TSS 5.72 2.45
O&G 1 2.45 0.819
pH (2) (2)
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]

Title 40 published on 2014-07-01

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