40 CFR § 420.40 - Applicability; description of the steelmaking subcategory.

---
identifier: "/us/cfr/t40/s420.40"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 420.40 - Applicability; description of the steelmaking subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "420.40"
section_name: "Applicability; description of the steelmaking 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: "2026-03-24"
last_updated: "2026-03-24"
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"
---


# 420.40 Applicability; description of the steelmaking subcategory.

The provisions of this subpart are applicable to discharges and to the introduction of pollutants into publicly owned treatment works resulting from steelmaking operations conducted in basic oxygen and electric arc furnaces.

[67 FR 64267, Oct. 17, 2002]