40 C.F.R. § 424.25

Current through October 31, 2024
Section 424.25 - Standards of performance for new sources

The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart:

Effluent characteristicEffluent limitations
Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed-
Metric units (kg/Mwh)
TSS0.0320.016
Chromium total.001.0005
Chromium VI.0001.00005
Manganese total.011.005
Cyanide total.0005.0003
Phenols.0004.0002
pH(1)(1)
English units (lb/Mwh)
TSS.071.035
Chromium total.002.0012
Chromium VI.0002.0001
Manganese total.023.012
Cyanide total.001.0006
Phenols.0009.0005
pH(1)(1)

1 Within the range 6.0 to 9.0.

Provided, however, That for nonelectric furnace smelting processes, the units of effluent limitations set forth in this section shall be read as "kg/kkg of product" rather than "kg/Mwh," and the limitations (except for pH) shall be 3.3 times those listed in the table in this section (or, for English units, "lb/ton of product" rather than "lb/Mwh," and the limitations (except for pH) shall be three times those listed in the table).

40 C.F.R. §424.25

39 FR 6809, Feb. 22, 1974, as amended at 39 FR 17841, May 21, 1974