---
kind: "section"
citation: "40 C.F.R. § 420.107"
title: "40"
number: "420.107"
heading: "Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT)."
url: "https://uscodex.org/cfr/40/420.107"
---

# §420.107. 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) **Cold rolling mills—**
  - (1) **Recirculation—single stand.**
  - (2) **Recirculation—multiple stands.**
  - (3) **Combination.**
  - (4) **Direct application—single stand.**
  - (5) **Direct application—multiple stands.**
- (b) **Cold worked pipe and tube—**
  - (1) **Using water.**
  - (2) **Using oil solutions.**

## Notes

### Amendments

[47 FR 23284, May 27, 1982, as amended at 49 FR 21035, May 17, 1984]

### 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 49 FR 21035, May 17, 1984]