---
kind: "section"
citation: "40 C.F.R. § 63.1158"
title: "40"
number: "63.1158"
heading: "Emission standards for new or reconstructed sources."
url: "https://uscodex.org/cfr/40/63.1158"
---

# §63.1158. Emission standards for new or reconstructed sources.

- (a) **Pickling lines—**
  - (1) **Continuous pickling lines.** No owner or operator of a new or reconstructed affected continuous pickling line at a steel pickling facility shall cause or allow to be discharged into the atmosphere from the affected pickling line:
    - (i) Any gases that contain HCl in a concentration in excess of 6 ppmv; or
    - (ii) **HCl at a mass emission rate that corresponds to a collection efficiency of less than 99 percent.**
  - (2) **Batch pickling lines.** No owner or operator of a new or reconstructed affected batch pickling line at a steel pickling facility shall cause or allow to be discharged into the atmosphere from the affected pickling line:
    - (i) Any gases that contain HCl in a concentration in excess of 18 ppmv; or
    - (ii) **HCl at a mass emission rate that corresponds to a collection efficiency of less than 97 percent.**
- (b) **Hydrochloric acid regeneration plants.**
  - (1) No owner or operator of a new or reconstructed affected plant shall cause or allow to be discharged into the atmosphere from the affected plant any gases that contain HCl in a concentration greater than 12 ppmv.
  - (2) In addition to the requirement of [paragraph (b)(1)](#b-1) of this section, no owner or operator of a new or reconstructed affected plant shall cause or allow to be discharged into the atmosphere from the affected plant any gases that contain Cl2 in a concentration in excess of 6 ppmv.

## Notes

### Source

Source: 64 FR 33218, June 22, 1999, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.