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40 CFR § 426.50 - Applicability; description of the float glass manufacturing subcategory.

---
identifier: "/us/cfr/t40/s426.50"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 426.50 - Applicability; description of the float glass manufacturing subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "426.50"
section_name: "Applicability; description of the float glass manufacturing subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "426"
part_name: "GLASS 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: "Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c), and 316(b) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314, 1316 (b) and (c), 1317(b); 86 Stat. 816  Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."
regulatory_source: "39 FR 2565, Jan. 22, 1974, unless otherwise noted."
cfr_part: "426"
---

# 426.50 Applicability; description of the float glass manufacturing subcategory.

The provisions of this subpart are applicable to discharges of pollutants resulting from the process in which several mineral ingredients (sand, soda ash, limestone, dolomite, cullet, and other ingredients) are mixed, melted in a furnace, and floated on a molten tin bath to produce float glass.