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Code of Federal Regulations Title 40. Protection of Environment § 40.420.97 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT)
Current as of January 02, 2025 | Updated by Findlaw Staff
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 |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.0819 |
0.0350 |
|
O&G1 |
0.0350 |
0.0117 |
|
pH |
(2) |
(2) |
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.
(2) Bar, billet and bloom.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.0263 |
0.0113 |
|
O&G1 |
0.0113 |
0.00376 |
|
pH |
(2) |
(2) |
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.
(3) Strip, sheet and plate.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.0526 |
0.0225 |
|
O&G1 |
0.0225 |
0.00751 |
|
pH |
(2) |
(2) |
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.
(4) Pipe, tube and other products.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.146 |
0.0626 |
|
O&G1 |
0.0626 |
0.0209 |
|
pH |
(2) |
(2) |
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.
(5) Fume scrubbers.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
5.72 |
2.45 |
|
O&G1 |
2.45 |
0.819 |
|
pH |
(2) |
(2) |
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.
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 |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.143 |
0.0613 |
|
O&G1 |
0.0613 |
0.0204 |
|
pH |
(2) |
(2) |
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.
(2) Strip, sheet and plate.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.0819 |
0.0350 |
|
O&G1 |
0.0350 |
0.0117 |
|
pH |
(2) |
(2) |
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.
(3) Pipe, tube and other products.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.298 |
0.128 |
|
O&G1 |
0.128 |
0.0426 |
|
pH |
(2) |
(2) |
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.
(4) Fume scrubbers.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
5.72 |
2.45 |
|
O&G1 |
2.45 |
0.819 |
|
pH |
(2) |
(2) |
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.
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 |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
38.2 |
16.3 |
|
O&G1 |
16.3 |
5.45 |
|
pH |
(2) |
(2) |
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.
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 |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.149 |
0.0638 |
|
O&G1 |
0.0638 |
0.0213 |
|
pH |
(2) |
(2) |
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.
(2) Bar, billet, and bloom.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.0672 |
0.0288 |
|
O&G1 |
0.0288 |
0.00960 |
|
pH |
(2) |
(2) |
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.
(3) Strip, sheet, and plate—continuous.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.438 |
0.188 |
|
O&G1 |
0.188 |
0.0626 |
|
pH |
(2) |
(2) |
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.
(4) Strip, sheet and plate—batch.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.134 |
0.0576 |
|
O&G1 |
0.0576 |
0.0192 |
|
pH |
(2) |
(2) |
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.
(5) Pipe, tube, and other products.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kg/kkg (pounds per 1,000 lb) of product |
||
|
TSS |
0.225 |
0.0964 |
|
O&G1 |
0.0964 |
0.0321 |
|
pH |
(2) |
(2) |
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.
(6) Fume scrubbers.
|
SUBPART I |
||
|---|---|---|
|
BCT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Kilograms per day |
||
|
TSS |
5.72 |
2.45 |
|
O&G1 |
2.45 |
0.819 |
|
pH |
(2) |
(2) |
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.
The above limitations shall be applicable to each fume scrubber associated with a combination acid pickling operation.
Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.420.97 Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT) - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-420-97/
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.
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