The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below.

(a) Galvanizing, terne coating and other coatings—(1) Strip, sheet, and miscellaneous products.

Subpart L

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.04380.0188
O&G0.01880.00626
Lead0.0002820.0000939
Zinc0.0003760.000125
Chromium (hexavalent) 10.00003760.0000125
pH(2)(2)

1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.

2 Within the range of 6.0 to 9.0.

(2) [Reserved]

(b) Galvanizing and other coatings—(1) Wire products and fasteners.

Subpart L

Pollutant or pollutant propertyNew source performance standards
Maximum for any 1 dayAverage of daily values for 30 consecutive days
Kg/kkg (pounds per 1,000 lb) of product
TSS0.1750.0751
O&G0.07510.0250
Lead0.001130.000376
Zinc0.001500.000500
Chromium (hexavalent) 10.0001500.0000501
pH(1)(1)

1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.

2 Within the range of 6.0 to 9.0.

(2) [Reserved]

(c) Fume scrubbers.

Subpart L

New source performance standardsPollutant or pollutant property
Maximum for any 1 dayAverage of daily values for 30 consecutive days
kg/per day
TSS5.722.45
O&G2.450.819
Lead0.03680.0123
Zinc0.04910.0164
Chromium (hexavalent) 10.004900.00163
pH(2)(2)

1 The limitations for hexavalent chromium shall be applicable only to galvanizing operations which discharge wastewaters from the chromate rinse step.

2 Within the range of 6.0 to 9.0.

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 21036, May 17, 1984]
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