40 CFR § 427.20 - Applicability; description of the asbestos-cement sheet subcategory.

---
identifier: "/us/cfr/t40/s427.20"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 427.20 - Applicability; description of the asbestos-cement sheet subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "427.20"
section_name: "Applicability; description of the asbestos-cement sheet subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "427"
part_name: "ASBESTOS 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), 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."
regulatory_source: "39 FR 7527, Feb. 26, 1974, unless otherwise noted."
cfr_part: "427"
---


# 427.20 Applicability; description of the asbestos-cement sheet subcategory.

The provisions of this subpart are applicable to discharges resulting from the process in which asbestos, Portland cement, silica, and other ingredients are used in the manufacturing of asbestos-cement sheets. Discharges resulting from manufacture of asbestos-cement sheet laboratory tops are specifically excluded from the provisions of this subpart.