42 USC § 7661 - Definitions

---
identifier: "/us/usc/t42/s7661"
source: "usc"
legal_status: "official_prima_facie"
title: "42 USC § 7661 - Definitions"
title_number: 42
title_name: "THE PUBLIC HEALTH AND WELFARE"
section_number: "7661"
section_name: "Definitions"
chapter_number: 85
chapter_name: "AIR POLLUTION PREVENTION AND CONTROL"
subchapter_number: "V"
subchapter_name: "PERMITS"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(July 14, 1955, ch. 360, title V, § 501, as added Pub. L. 101–549, title V, § 501, Nov. 15, 1990, 104 Stat. 2635.)"
---


# § 7661. Definitions

As used in this subchapter—

**(1)** **Affected source** The term “affected source” shall have the meaning given such term in subchapter IV–A.

**(2)** **Major source** The term “major source” means any stationary source (or any group of stationary sources located within a contiguous area and under common control) that is either of the following:

**(A)** A major source as defined in section 7412 of this title.

**(B)** A major stationary source as defined in section 7602 of this title or part D of subchapter I.

**(3)** **Schedule of compliance** The term “schedule of compliance” means a schedule of remedial measures, including an enforceable sequence of actions or operations, leading to compliance with an applicable implementation plan, emission standard, emission limitation, or emission prohibition.

**(4)** **Permitting authority** The term “permitting authority” means the Administrator or the air pollution control agency authorized by the Administrator to carry out a permit program under this subchapter.

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**Source Credit**: (July 14, 1955, ch. 360, title V, § 501, as added Pub. L. 101–549, title V, § 501, Nov. 15, 1990, 104 Stat. 2635.)