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 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 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 1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step. The above limitations shall be applicable to each fume scrubber associated with any of the coating operations specified above. [47 FR 23284, May 27, 1982, as amended at 49 FR 21037, May 17, 1984]