eCFR Reference Browser

---

title: "40 CFR §51.25"

source: "https://www.ecfr.gov/current/title-40/section-51.25"

title_number: "40"

volume_number: "2"

chapter_number: "Unknown"

subchapter_code: "C"

subchapter_subject: "AIR PROGRAMS"

part_code: "51"

part_subject: "REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS"

subpart_code: "A"

subpart_subject: "Air Emissions Reporting Requirements"

section_number: "51.25"

section_subject: "What geographic area must my state's inventory cover?"

cfr_reference: "40 CFR 51.25"

title_name: "Title 40"

title_subject: "Protection of Environment"

parts_covered: "Parts 50 to 51"

revised_date: "Revised as of July 1, 2019"

publication_date: "As of July 1, 2019"

contains_description: "Containing a codification of documents of general applicability and future effect"

publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"

---

Because of the regional nature of these pollutants, your state's inventory must be statewide, regardless of any area's attainment status.

§51.25 - What geographic area must my state's inventory cover?