View all text of Subpart I [§ 420.90 - § 420.97]
§ 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 | Kg/kkg (pounds per 1,000 lb) of product | TSS | 0.0819 | 0.0350 | O&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | Maximum for any 1 day | Average of daily values for 30 consecutive days | Kilograms per day | TSS | 5.72 | 2.45 | O&G 1 | 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.
(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 | Kg/kkg (pounds per 1,000 lb) of product | TSS | 0.143 | 0.0613 | O&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | Maximum for any 1 day | Average of daily values for 30 consecutive days | Kilograms per day | TSS | 5.72 | 2.45 | O&G 1 | 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.
(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 | Kilograms per day | TSS | 38.2 | 16.3 | O&G 1 | 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.
(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 | Kg/kkg (pounds per 1,000 lb) of product | TSS | 0.149 | 0.0638 | O&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | 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&G 1 | 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
| Pollutant or pollutant property | BCT effluent limitations | Maximum for any 1 day | Average of daily values for 30 consecutive days | Kilograms per day | TSS | 5.72 | 2.45 | O&G 1 | 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.