View all text of Subpart I [§ 420.90 - § 420.97]
§ 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 |
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(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 |
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(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 |
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(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 |
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(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 |
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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 |
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(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 |
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(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 |
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(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 |
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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 |
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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 |
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(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 |
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(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 |
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(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 |
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(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 |
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(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 |
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Note: The above limitations shall be applicable to each fume scrubber associated with a combination acid pickling operation.