---
kind: "section"
citation: "40 C.F.R. § 420.87"
title: "40"
number: "420.87"
heading: "Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT)."
url: "https://uscodex.org/cfr/40/420.87"
---

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


Except as provided in [40 CFR 125.30 through 125.32](/cfr/40/125.30..125.32.md), any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology.

- (a) **Salt bath descaling, oxidizing—**
  - (1) **Batch, sheet and plate.**
  - (2) **Batch, rod and wire.**
  - (3) **Batch, pipe and tube.**
  - (4) **Continuous.**
- (b) **Salt bath descaling, reducing—**
  - (1) **Batch.**
  - (2) **Continuous.**

## Notes

### Amendments

[47 FR 23284, May 27, 1982; 47 FR 41739, Sept. 22, 1982]

### 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; 47 FR 41739, Sept. 22, 1982]