40 CFR § 436.150 - Applicability; description of the sodium sulfate subcategory.

---
identifier: "/us/cfr/t40/s436.150"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 436.150 - Applicability; description of the sodium sulfate subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "436.150"
section_name: "Applicability; description of the sodium sulfate subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "436"
part_name: "MINERAL MINING AND PROCESSING 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), Federal Water Pollution Control Act, as amended (33 U.S.C. 1251, 1311, 1314 (b) and (c), 86 Stat. 816  Pub. L. 92-500) (the Act)."
regulatory_source: "40 FR 48657, Oct. 16, 1975, unless otherwise noted."
cfr_part: "436"
---


# 436.150 Applicability; description of the sodium sulfate subcategory.

The provisions of this subpart are applicable to the processing of sodium sulfate. Sodium sulfate obtained from brine lakes is regulated in the salines from brine lakes subcategory (subpart L of this part).