---
kind: "section"
citation: "40 C.F.R. § 420.97"
title: "40"
number: "420.97"
heading: "Effluent limitations representing the degree of effluent reduction attainable by the application of the best conventional technology (BCT)."
url: "https://uscodex.org/cfr/40/420.97"
---

# §420.97. 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) **Sulfuric acid pickling (spent acid solutions and rinse waters)—**
  - (1) **Rod, wire and coil.**
  - (2) **Bar, billet and bloom.**
  - (3) **Strip, sheet and plate.**
  - (4) **Pipe, tube and other products.**
  - (5) **Fume scrubbers.**
- (b) **Hydrochloric acid pickling (spent acid solutions and rinse waters)—**
  - (1) **Rod, wire and coil.**
  - (2) **Strip, sheet and plate.**
  - (3) **Pipe, tube and other products.**
  - (4) **Fume scrubbers.**
  - (5) **Acid regeneration (absorber vent scrubber).**
- (c) **Combination acid pickling (spent acid solution and rinse waters)—**
  - (1) **Rod, wire, and coil.**
  - (2) **Bar, billet, and bloom.**
  - (3) **Strip, sheet, and plate—continuous.**
  - (4) **Strip, sheet and plate—batch.**
  - (5) **Pipe, tube, and other products.**
  - (6) **Fume scrubbers.**

## 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]