40 CFR § 435.10 - Applicability; description of the offshore subcategory.

---
identifier: "/us/cfr/t40/s435.10"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 435.10 - Applicability; description of the offshore subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "435.10"
section_name: "Applicability; description of the offshore subcategory."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "435"
part_name: "OIL AND GAS EXTRACTION POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1251, 1311, 1314, 1316, 1317, 1318, 1342 and 1361."
regulatory_source: "44 FR 22075, Apr. 13, 1979, unless otherwise noted."
cfr_part: "435"
---


# 435.10 Applicability; description of the offshore subcategory.

The provisions of this subpart are applicable to those facilities engaged in field exploration, drilling, well production, and well treatment in the oil and gas industry which are located in waters that are seaward of the inner boundary of the territorial seas (“offshore”) as defined in section 502(g) of the Clean Water Act.

[61 FR 66123, Dec. 16, 1996]