Conformity Adequacy Review: Region 4

State Implementation Plans (SIP) Submissions that EPA has Found Adequate or Inadequate
Region 4: Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee

For more information about adequacy review, return to the main adequacy page.

Contact: Dianna Myers at 404-562-9207, fax: 404-562-9019 or myers.dianna@epa.gov.
U.S. EPA Region 4, Air, Pesticides, and Toxics Management Division, 61 Forsyth St. S.W., Atlanta, GA 30303.

Alabama
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Birmingham	pm2.5	maintenance plan	Adequate (2/25/2013) FR Notice	2006 24-hour pm2.5 budgets found adequate through the SIP approval process.
		maintenance plan	Adequate (2/21/2013) FR Notice	1997 annual pm2.5 budgets found adequate through the SIP approval process.
		reasonable further progress and attainment demonstration	Withdrawn (3/01/2013)
	8-hour ozone	maintenance plan	Adequate (03/10/06) Adequate Letter (3/10/2006) (pdf) (55.08 KB, February 2, 2006) and FR Notice (pdf) (142 KB, published February 23, 2006)	Budgets found adequate through the adequacy review process.
Alabama Portion (Jackson County) of Chattanooga Area, AL-GA-TN	pm2.5	maintenance plan	Adequate (12/22/2014) FR Notice	Regional insignificance finding for PM2.5 and NOx made through the SIP approval process.
	pm2.5	attainment plan	Adequate (7/6/2010) Adequate Letter (7/6/2010) (pdf) (81.1 KB, March 25, 2000) and FR Notice	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Georgia
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Atlanta	2015 8-hour ozone	maintenance plan	Adequate (11/16/22) 87 FR 62733 (printed 10/17/22)	Budgets found adequate through SIP approval process.
	1997 pm2.5	maintenance plan	Adequate (2/24/16) 81 FR 9114 (printed 2/24/16)	Budgets found adequate through the SP approval process
	2008 8-hour ozone	maintenance plan	Adequate (10/13/15) 80 FR 48036 (printed 8/11/15)	Budgets found adequate through the SIP approval process
	1997 8-hour ozone	maintenance plan	Adequate (12/2/2013) FR Notice	Budgets found adequate through the SIP approval process.
		attainment plan	Withdrawn
		reasonable further progress	Adequate (11/4/2013) FR Notice	Budgets found adequate through the SIP approval process.
		early progress SIP	Adequate (4/24/2007) FR Notice (pdf) (151 KB)	Budgets found adequate through the adequacy review process.
Chattanooga GA-AL-TN	1997 pm2.5	maintenance plan	Adequate (12/19/2014) FR Notice	Budgets found adequate through SIP approval process.
Macon	1997 pm2.5	maintenance plan	Adequate (5/13/2014) FR Notice	Budgets found adequate through SIP approval process.
Macon	8-hour ozone	maintenance plan	Adequate (9/19/2007) FR Notice (pdf) (161 KB)	Budgets found adequate through SIP approval process.
Murray County	8-hour ozone	maintenance plan	Adequate (10/16/2007) FR Notice (163 KB)	Budgets found adequate through SIP approval process.
Rome	1997 pm2.5	maintenance plan	Adequate (5/14/2014) FR Notice	Budgets found adequate through SIP approval process.
Kentucky
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Boyd County	8-hour ozone	maintenance plan	Adequate (8/3/2007) FR Notice (pdf) (158 KB)	Budgets found adequate through SIP approval process.
Christian County (Clarksville-Hopkins Area)	8-hour ozone	maintenance plan	Adequate (1/25/2006) FR Notice (pdf) (154 KB, published January 25, 2006)	Budgets found adequate through SIP approval process.
Cincinnati - Hamilton (IN - KY - OH)	pm2.5	maintenance plan	Adequate (12/15/2011) FR Notice	Budgets found adequate through SIP approval process.
	pm2.5	attainment plan	Withdrawn (9/30/2011) Adequate Letter (9/30/2011) (pdf) (92.18 KB, September 30, 2011)
	2015 8-hour ozone	maintenance plan	Adequate (11/3/2023) FR Notice	Budgets found adequate through the SIP approval process.
	2008 8-hour ozone	maintenance plan	Adequate (7/5/2017) FR Notice (pdf) (263 KB, published July 5, 2017)	Budgets found adequate through the SIP approval process.
	1997 8-hour ozone	maintenance plan	Adequate (8/5/2013) FR Notice	Budgets found adequate through SIP approval process.
	1997 8-hour ozone	maintenance plan	Adequate (8/5/2010) FR Notice	Budgets found adequate through SIP approval process.
	8-hour ozone	attainment demonstration	Adequate (5/13/2008) Adequate Letter (5/13/2008) (pdf) (81.09 KB, March 14, 2008) and FR Notice	Budgets found adequate through the adequacy review process.
Huntington-Ashland	pm2.5	maintenance plan	Adequate (12/26/2012) FR Notice	Regional insignificance finding for PM2.5 and NOx made through the SIP approval process.
Huntington-Ashland	pm2.5	attainment plan	Adequate (7/6/2010) Adequate Letter (7/6/2010) (pdf) (76.58 KB, March 23, 2010) and FR Notice	Budgets found adequate through the adequacy review process.
Bi-state Louisville	1997 pm2.5	maintenance plan	Adequate (4/7/17) 81 FR 16943 (printed 4/7/17)	Budgets found adequate through the SIP approval process.
	1997 pm2.5	attainment plan	Withdrawn (9/30/2011) Adequate Letter (9/30/2011) (pdf) (92.18 KB, September 30, 2011)	Budgets found adequate through the SIP approval process.
	8-hour ozone	maintenance plan	Adequate (7/5/2007) Adequate Letter (7/5/2007) (pdf) (71.91 KB, June 18, 2007) and FR Notice (pdf) (145 KB)	Budgets found adequate through the SIP approval process.
Mississippi
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Desoto County	2008 8-hour ozone	maintenance plan	Adequate (4/8/2016) 81 FR 20543 (printed 4/8/16)	Budgets found adequate through the SIP approval process.
North Carolina
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Charlotte	2008 8-hour ozone	maintenance plan	Adequate (7/28/2015) FR Notice	Budgets found adequate through the SIP approval process.
	1997 8-hour ozone	maintenance plan	Adequate (8/28/2013) FR Notice	Budgets found adequate through the adequacy review process.
		reasonable further progress plan	Adequate (3/08/2010) Adequate Letter (3/8/2010) (pdf) (104.81 KB, January 12, 2010) and FR Notice	Budgets found adequate through the adequacy review process.
		reasonable further progress plan	Withdrawn	RFP plan (insignificance) replaced with VOC budgets. New adequacy review started on 12/03/09
		attainment plan	Withdrawn (2/10/2012) Withdrawn Letter (2/10/2012) (pdf) (193.8 KB, February 10, 2012)
		attainment plan	Withdrawn (12/19/2008) Withdrawn Letter (12/19/2008) (pdf) (136.83 KB, December 19, 2008)
	carbon monoxide	maintenance plan	Adequate (5/23/2005) Adequate Letter (5/23/2005) (pdf) (37.55 KB, April 29, 2005) and FR Notice (pdf) (145 KB)	Budgets found adequate through the adequacy review process.
Great Smoky Mountain National Park	8-hour ozone	maintenance plan	Adequate (12/7/2009) FR Notice (pdf) (151 KB, published December 7, 2009)	Budgets found adequate through the SIP approval process.
Greensboro - Winston - Salem - Highpoint	pm2.5	maintenance plan	Adequate (5/17/2011) Adequate Letter (5/17/2011) (pdf) (70.48 KB, February 2, 2011) and FR Notice (pdf) (148 KB, published May 2, 2011)	Budgets found adequate through the the adequacy review process.
Greensboro - Winston - Salem - Highpoint	pm2.5	attainment plan	Withdrawn Withdrawn Letter (5/17/2011) (pdf) (193.8 KB, February 10, 2012)	Replaced by the maintenance plan.
Hickory	pm2.5	maintenance plan	Adequate (5/17/2011) Adequate Letter (5/17/2011) (pdf) (116.53 KB, February 3, 2011) and FR Notice (pdf) (152 KB, published May, 2011)	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Hickory	pm2.5	attainment plan	Adequate (3/16/2010) Adequate Letter (3/16/2010) (pdf) (88.82 KB, January 20, 2010) and FR Notice FR Notice	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Raleigh - Durham and Chapel Hill	8-hour ozone	maintenance plan	Adequate (12/26/2007) FR Notice (pdf) (169 KB)	Budgets found adequate through the SIP approval process.
Rocky Mount	8-hour ozone	maintenance plans	Adequate (11/26/2012) FR Notice	Budgets found adequate through SIP approval process.
Rocky Mount	8-hour ozone	maintenance plans	Adequate (1/5/2007) FR Notice	Budgets found adequate through SIP approval process.
South Carolina
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Charlotte (York County)	2008 8-hour ozone	maintenance plan	Adequate (12/11/2015) FR Notice (pdf) (241 KB, published December 11, 2015)	Budgets found adequate through the SIP approval process.
	1997 8-hour ozone	maintenance plan	Adequate (10/9/2012) FR Notice	Budgets found adequate through the adequacy review process.
		reasonable further progress plan	Adequate (6/21/2012) Adequate Letter (6/21/2012) (pdf) (80.31 KB, May 25, 2012) and FR Notice	Response to Comments (pdf) (140.9 KB, May 2012) Budgets found adequate through the adequacy review process.
		reasonable further progress plan	Revised	In December 2009 EPA requested additional information regarding the reasonable further progress plan. The revised budgets were provided in the May 5, 2010 SIP submission and posted for adequacy review on May 13, 2010.
		attainment plan	Withdrawn (1/12/2012) Withdrawn Letter (1/12/2012) (pdf) (590.38 KB, January 12, 2012) <
		attainment plan	Withdrawn (12/19/2008) Withdrawn Letter (12/19/2008) (pdf) (155.41 KB, December 22, 2008)
Tennessee
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Chattanooga Area	1997 pm2.5	maintenance plan	Adequate (11/4/2015) FR Notice	Budgets found adequate through the SIP approval process.
Knoxville
	2006 pm2.5	maintenance plan	Adequate (3/27/2017) Tennessee 2006 Adequate Letter (3/27/2017) (pdf) (399.7 KB, Feb 15, 2017) and FR Notice	Budgets found adequate through the adequacy review process
	1997 pm2.5	maintenance plan	Adequate (3/27/2017) Tennessee 1997 Adequate Letter (3/27/2017) (pdf) (397.95 KB, Feb 15, 2017) and FR Notice	Budgets found adequate through the adequacy review process.
	1997 pm2.5	attainment plan	Adequate (4/22/2010) Adequate Letter (4/22/2010) (pdf) (76.31 KB, February 11, 2010) and FR Notice	Budgets found adequate through the adequacy review process.
	2008 8-hour ozone	maintenance plan	Adequate (7/13/2015) FR Notice	Budgets found adequate through the SIP approval process.
	1997 8-hour ozone	maintenance plan	Adequate (9/30/2010) Adequate Letter (9/30/2010) (pdf) (63.79 KB, July 20, 2010) and FR Notice	Budgets found adequate through the adequacy review process.
	1997 8-hour ozone	maintenance plan	Withdrawn (2/10/2009) Withdrawn Letter (2/10/2009) (pdf) (38.69 KB, February 10, 2009)	Posted for adequacy on 03/06/07.
Memphis/Shelby County	2008 8-hour ozone	maintenance plan	Adequate (6/23/16) 81 FR 40816 (printed 6/23/16)	Budgets found adequate through the SIP approval process
	1997 8-hour ozone	maintenance plans	Adequate (11/27/2009) FR Notice	Budgets found adequate through the adequacy review process.
	carbon monoxide	maintenance plans	Adequate (10/25/2006) FR Notice (pdf) (161 KB)	Budgets found adequate through SIP approval process.
Montgomery County	8-hour ozone	maintenance plan	Adequate (11/21/2005) FR Notice (pdf) (184 KB, published September 22, 2005)	Budgets found adequate through the SIP approval process.