View all text of Subpart L [§ 420.120 - § 420.127]
§ 420.126 - Pretreatment standards for new sources (PSNS).
Except as provided in 40 CFR 403.7, any new 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 new sources:
(a) Galvanizing, terne coatings and other coatings—(1) Strip, sheet, and miscellaneous products.
Subpart L
| Pollutant or pollutant property | Pretreatment standards for new sources | Maximum for any 1 day | Average of daily values for 30 consecutive days | Kg/kkg (pounds per 1,000 lb) of product | Lead | 0.000282 | 0.0000939 | Zinc | 0.000376 | 0.000125 | Chromium (hexavalent) 1 | 0.0000376 | 0.0000125 |
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1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.
(2) [Reserved]
(b) Galvanizing and other coatings—(1) Wire products and fasteners.
Subpart L
| Pollutant or pollutant property | Pretreatment standards for new sources | Maximum for any 1 day | Average of daily values for 30 consecutive days | Kg/kkg (pounds per 1,000 lb) of product | Lead | 0.00113 | 0.000376 | Zinc | 0.00150 | 0.000500 | Chromium (hexavalent) 1 | 0.000150 | 0.0000501 |
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1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.
(2) [Reserved]
(c) Fume scrubbers.
Subpart L
| Pollutant or pollutant property | Pretreatment standards for new 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 | Chromium (Hexavalent) 1 | 0.00490 | 0.00163 |
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1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.