40 CFR § 420.70 - Applicability; description of the hot forming subcategory.

---
identifier: "/us/cfr/t40/s420.70"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 420.70 - Applicability; description of the hot forming subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "420.70"
section_name: "Applicability; description of the hot forming subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "420"
part_name: "IRON AND STEEL MANUFACTURING POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1311, 1314, 1316, 1317, 1318, 1342, and 1361."
regulatory_source: "47 FR 23284, May 27, 1982, unless otherwise noted."
cfr_part: "420"
---


# 420.70 Applicability; description of the hot forming subcategory.

The provisions of this subpart are applicable to discharges and to the introduction of pollutants into publicly owned treatment works resulting from hot forming operations conducted in primary, section, flat, and pipe and tube mills.