---
kind: "section"
citation: "40 C.F.R. § 420.90"
title: "40"
number: "420.90"
heading: "Applicability; description of the acid pickling subcategory."
url: "https://uscodex.org/cfr/40/420.90"
---

# §420.90. Applicability; description of the acid pickling subcategory.


The provisions of this subpart are applicable to discharges and to the introduction of pollutants into publicly owned treatment works resulting from sulfuric acid, hydrochloric acid, or combination acid pickling operations.


## Notes

### 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.