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CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 51—REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS > SUBPART A—Air Emissions Reporting Requirements (§51.1 to §51.50) > 51.25—What geographic area must my state's inventory cover?
51.25—What geographic area must my state's inventory cover?
Because of the regional nature of these pollutants, your state's inventory must be statewide, regardless of any area's attainment status.