---
kind: "section"
citation: "40 C.F.R. § 420.47"
title: "40"
number: "420.47"
heading: "Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT)."
url: "https://uscodex.org/cfr/40/420.47"
---

# §420.47. Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best conventional pollutant control technology (BCT).

- (a) **Electric arc furnace steelmaking—semi-wet.** No discharge of process wastewater pollutants to navigable waters.
- (b) **Basic oxygen furnace steelmaking—wet-suppressed combustion.** [Reserved]
- (c) **Basic oxygen furnace steelmaking—wet—open combustion; electric arc furnace steelmaking—wet.** [Reserved]
- (d) **Basic oxygen furnace steelmaking—semi-wet.**
  - (1) **No discharge of process wastewater pollutants to navigable waters.**
  - (2) If the permittee demonstrates to the satisfaction of the permitting authority that safety considerations prevent attainment of these limitations, the permitting authority may establish alternative limitations on a best professional judgment basis.

## Notes

### Amendments

[47 FR 23284, May 27, 1982, as amended at 67 FR 64268, Oct. 17, 2002]

### Authority

Authority: 33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, and 1361.

### Source

Source: 47 FR 23284, May 27, 1982, unless otherwise noted.

### Amendments

[47 FR 23284, May 27, 1982, as amended at 67 FR 64268, Oct. 17, 2002]