40 CFR § 435.40 - Applicability; description of the coastal subcategory.

---
identifier: "/us/cfr/t40/s435.40"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 435.40 - Applicability; description of the coastal subcategory."
title_number: 40
title_name: "Protection of Environment"
section_number: "435.40"
section_name: "Applicability; description of the coastal 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"
---


# 435.40 Applicability; description of the coastal 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 in areas defined as “coastal.” The term “coastal” shall mean:

(a) Any location in or on a water of the United States landward of the inner boundary of the territorial seas; or

(b)(1) Any location landward from the inner boundary of the territorial seas and bounded on the inland side by the line defined by the inner boundary of the territorial seas eastward of the point defined by 89°45′ West Longitude and 29°46′ North Latitude and continuing as follows west of that point:

| Direction to westlongitude | Direction to northlatitude |
| --- | --- |
| West, 89°48′ | North, 29°50′. |
| West, 90°12′ | North, 30°06′. |
| West, 90°20′ | South, 29°35′. |
| West, 90°35′ | South, 29°30′. |
| West, 90°43′ | South, 29°25′. |
| West, 90°57′ | North, 29°32′. |
| West, 91°02′ | North, 29°40′. |
| West, 91°14′ | South, 29°32′. |
| West, 91°27′ | North, 29°37′. |
| West, 91°33′ | North, 29°46′. |
| West, 91°46′ | North, 29°50′. |
| West, 91°50′ | North, 29°55′. |
| West, 91°56′ | South, 29°50′. |
| West, 92°10′ | South, 29°44′. |
| West, 92°55′ | North, 29°46′. |
| West, 93°15′ | North, 30°14′. |
| West, 93°49′ | South, 30°07′. |
| West, 94°03′ | South, 30°03′. |
| West, 94°10′ | South, 30°00′. |
| West, 94°20′ | South, 29°53′. |
| West, 95°00′ | South, 29°35′. |
| West, 95°13′ | South, 29°28′. |
| East, 95°08′ | South, 29°15′. |
| West, 95°11′ | South, 29°08′. |
| West, 95°22′ | South, 28°56′. |
| West, 95°30′ | South, 28°55′. |
| West, 95°33′ | South, 28°49′. |
| West, 95°40′ | South, 28°47′. |
| West, 96°42′ | South, 28°41′. |
| East, 96°40′ | South, 28°28′. |
| West, 96°54′ | South, 28°20′. |
| West, 97°03′ | South, 28°13′. |
| West, 97°15′ | South, 27°58′. |
| West, 97°40′ | South, 27°45′. |
| West, 97°46′ | South, 27°28′. |
| West, 97°51′ | South, 27°22′. |
| East, 97°46′ | South, 27°14′. |
| East, 97°30′ | South, 26°30′. |
| East, 97°26′ | South, 26°11′. |

(2) East to 97°19′ West Longitude and Southward to the U.S.-Mexican border.