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40 CFR § 406.30 - Applicability; description of the normal wheat flour milling subcategory.

---
identifier: "/us/cfr/t40/s406.30"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 406.30 - Applicability; description of the normal wheat flour milling subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "406.30"
section_name: "Applicability; description of the normal wheat flour milling subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "406"
part_name: "GRAIN MILLS 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) of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c), 1317(c); 86 Stat. 816  Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."
regulatory_source: "39 FR 10513, Mar. 20, 1974, unless otherwise noted."
cfr_part: "406"
---

# 406.30 Applicability; description of the normal wheat flour milling subcategory.

The provisions of this subpart are applicable to discharges resulting from the processes in which wheat and other grains are milled by dry processes into flour and millfeed.