1. Regulations
  2. title 40
  3. chapter I-i30
  4. part 424
  5. subpart B
  6. § 424.23

View all text of Subpart B [§ 424.20 - § 424.27]

§ 424.23 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.

The following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable:

Effluent characteristic Effluent limitations Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed— Metric units (kg/Mwh) Chromium total0.0010.0005 Chromium VI.0001.00005 Manganese total.011.005 Cyanide total.0005.0003 Phenols.0004.0002 English units (lb/Mwh) Chromium total.002.0012 Chromium VI.0002.0001 Manganese total.023.012 Cyanide total.001.0006 Phenols.0009.0005
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). [44 FR 50744, Aug. 29, 1979]

AUTHORITY: Secs. 301, 304(b) and (c), 306(b) and (c), 307(c) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314(b) and (c), 1316 (b) and (c), 1317(c); 86 Stat. 816

SOURCE: 39 FR 6809, Feb. 22, 1974, unless otherwise noted.

CITE AS: 40 CFR 424.23