# 401 KAR 50:020: 401 KAR 50:020. Air quality control regions > Kentucky · Regulations · In force URL: https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R020 ## Section - **Citation:** 401 KAR 50:020 - **Heading:** 401 KAR 50:020. Air quality control regions - **Jurisdiction:** Kentucky - **Kind:** Regulations - **Status:** In force - **Text as of:** August 14, 2026 - **Source:** Compiled text - **Location:** Kentucky Administrative Regulations / Title 401 (Energy and Environment Cabinet - Department for Environmental Protection) / Chapter 050 / 401 KAR 50:020 ## Text Section 1. Designation of Air Quality Control Regions. Air quality control regions designated by the Administrator of the U.S. EPA pursuant to Section 107 of the Clean Air Act as amended are listed in this section. The air quality control regions consist of the territorial area encompassed by the boundaries of the designated jurisdictions herein geographically located within the outermost boundaries of the area so delimited. (1) Appalachian Intrastate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Bell, Breathitt, Clay, Floyd, Harlan, Jackson, Johnson, Knott, Knox, Laurel, Lee, Leslie, Letcher, Magoffin, Martin, Owsley, Perry, Pike, Rockcastle, Whitley, Wolfe. (2) Bluegrass Intrastate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Anderson, Bourbon, Boyle, Clark, Estill, Fayette, Franklin, Garrard, Harrison, Jessamine, Lincoln, Madison, Mercer, Nicholas, Powell, Scott, Woodford. (3) Evansville (Indiana) - Owensboro - Henderson (Kentucky) Interstate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Daviess, Hancock, Henderson, McLean, Ohio, Union, Webster. (4) Huntington (West Virginia) - Ashland (Kentucky) - Portsmouth - Ironton (Ohio) Interstate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Bath, Boyd, Bracken, Carter, Elliott, Fleming, Greenup, Lawrence, Lewis, Mason, Menifee, Montgomery, Morgan, Robertson, Rowan. (5) Louisville Interstate Air Quality Control Region. In the Commonwealth of Kentucky the following county: Jefferson. (6) Metropolitan Cincinnati (Ohio) Interstate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Boone, Campbell, Carroll, Gallatin, Grant, Kenton, Owen, Pendleton. (7) North Central Kentucky Intrastate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Breckinridge, Bullitt, Grayson, Hardin, Henry, Larue, Marion, Meade, Nelson, Oldham, Shelby, Spencer, Trimble, Washington tate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Boone, Campbell, Carroll, Gallatin, Grant, Kenton, Owen, Pendleton. (7) North Central Kentucky Intrastate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Breckinridge, Bullitt, Grayson, Hardin, Henry, Larue, Marion, Meade, Nelson, Oldham, Shelby, Spencer, Trimble, Washington. (8) Paducah (Kentucky) - Cairo (Illinois) Interstate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden, Fulton, Graves, Hickman, Hopkins, Livingston, Lyon, Marshall, McCracken, Muhlenberg, Todd, Trigg. (9) South Central Kentucky Intrastate Air Quality Control Region. In the Commonwealth of Kentucky the following counties: Adair, Allen, Barren, Butler, Casey, Clinton, Cumberland, Edmonson, Green, Hart, Logan, McCreary, Metcalfe, Monroe, Pulaski, Russell, Simpson, Taylor, Warren, Wayne. Section 2. Classification of Air Quality Control Regions. The priority classification of air quality control regions shall be as in Appendix A to this administrative regulation. This priority system was established by the regulations of the U.S. EPA. Section 3. Appendix A. ## Nearby sections - [401 KAR 50:005 401 KAR 50:005. General application](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R005.md) - [401 KAR 50:010 401 KAR 50:010. Definitions for 401 KAR Chapter 50](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R010.md) - [401 KAR 50:012 401 KAR 50:012. General application](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R012.md) - [401 KAR 50:015 401 KAR 50:015. Documents incorporated by reference](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R015.md) - [401 KAR 50:020 401 KAR 50:020. Air quality control regions](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R020.md) - [401 KAR 50:025 401 KAR 50:025. Classification of counties](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R025.md) - [401 KAR 50:038 401 KAR 50:038. Air emissions fee](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R038.md) - [401 KAR 50:040 401 KAR 50:040. Air quality models](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R040.md) - [401 KAR 50:042 401 KAR 50:042. Good engineering practice stack height](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R042.md) - [401 KAR 50:045 401 KAR 50:045. Performance tests](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R045.md) - [401 KAR 50:047 401 KAR 50:047. Test procedures for capture efficiency](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R047.md) - [401 KAR 50:050 401 KAR 50:050. Monitoring](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R050.md) - [401 KAR 50:055 401 KAR 50:055. General compliance requirements](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R055.md) - [401 KAR 50:060 401 KAR 50:060. Enforcement](https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R060.md) --- Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_KY_KAR_T401_C050_R020. Check the current official text before relying on it. Not legal advice.