Definitions — Us Code Code § 7501
Us Code Code § 7501 — Definitions. Reproduced from the official United States Code, with a citation summary, verification link, and related provisions.
§ 7501. Definitions
For the purpose of this part—
(1)
(2)
(3) The term "lowest achievable emission rate" means for any source, that rate of emissions which reflects—
(A) the most stringent emission limitation which is contained in the implementation plan of any State for such class or category of source, unless the owner or operator of the proposed source demonstrates that such limitations are not achievable, or
(B) the most stringent emission limitation which is achieved in practice by such class or category of source, whichever is more stringent.
In no event shall the application of this term permit a proposed new or modified source to emit any pollutant in excess of the amount allowable under applicable new source standards of performance.
(4) The terms "modifications" and "modified" mean the same as the term "modification" as used in section 7411(a)(4) of this title.
(July 14, 1955, ch. 360, title I, §171, as added Pub. L. 95–95, title I, §129(b), Aug. 7, 1977, 91 Stat. 745; amended Pub. L. 101–549, title I, §102(a)(2), Nov. 15, 1990, 104 Stat. 2412.)
Editorial Notes
Amendments
1990—Pub. L. 101–549, §102(a)(2)(A), struck out "and section 7410(a)(2)(I) of this title" after "purpose of this part".
Pars. (1), (2). Pub. L. 101–549, §102(a)(2)(B), (C), amended pars. (1) and (2) generally. Prior to amendment, pars. (1) and (2) read as follows:
"(1) The term 'reasonable further progress' means annual incremental reductions in emissions of the applicable air pollutant (including substantial reductions in the early years following approval or promulgation of plan provisions under this part and section 7410(a)(2)(I) of this title and regular reductions thereafter) which are sufficient in the judgment of the Administrator, to provide for attainment of the applicable national ambient air quality standard by the date required in section 7502(a) of this title.
"(2) The term 'nonattainment area' means, for any air pollutant an area which is shown by monitored data or which is calculated by air quality modeling (or other methods determined by the Administrator to be reliable) to exceed any national ambient air quality standard for such pollutant. Such term includes any area identified under subparagraphs (A) through (C) of section 7407(d)(1) of this title."
Statutory Notes and Related Subsidiaries
Effective Date
Part effective Aug. 7, 1977, except as otherwise expressly provided, see section 406(d) of Pub. L. 95–95, set out as an Effective Date of 1977 Amendment note under section 7401 of this title.
About This Section
42 U.S.C. § 7501 is part of Title 42 of the United States Code. The United States Code is the official codification of federal statutes maintained by the Office of the Law Revision Counsel of the U.S. House of Representatives. Congress amends the Code through new public laws, which are eventually incorporated into the relevant title.
This section may be cited in legal writing as 42 U.S.C. § 7501. For the most current official text, including any recent amendments, use the official source links below. Do not rely on this page as the sole authority for legal citation or litigation.
How to Read This Statute
Statutes are organized by title, chapter, section, and subsection. Pay attention to words like "shall," "may," "and," and "or," because they determine whether a requirement is mandatory or permissive and whether multiple conditions must all be met. Historical notes and amendments often appear at the end of a section.
Using This Page
This page is intended for research and educational use. Lawyers, students, journalists, and compliance professionals can use it as a starting point, but should always verify the current text through an official government source before relying on it for legal advice, filings, or compliance decisions.