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

Open Table
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

1The 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

Open Table
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

1The 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

Open Table
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

1The 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]


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