Conformity Adequacy Review: Region 5

State Implementation Plans (SIP) Submissions that EPA has Found Adequate or Inadequate
Region 5: Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin

On this page:

Illinois
Indiana
Michigan
Ohio
Wisconsin

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

Contacts: For the Region 5 contact person (name, phone number, email address), see EPA’s Regional Contacts for State and Local Transportation.

Illinois
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Chicago Area	pm2.5	maintenance plan	Adequate (10/2/2013) FR Notice (8/2012) (pdf) (270 KB, published August 13, 2012)	Budgets found adequate through the SIP approval process.
	8-hour ozone	attainment demonstration	Plan Withdrawn (1/2023) Letter (pdf) (40.35 KB, January 24, 2023)
		maintenance plan	Adequate (5/20/2022) FR Notice (3/2022) (pdf) (427 KB, March 10, 2022)	Budgets found adequate through the adequacy review process
			Adequate (8/13/2012) FR Notice (8/2012) (pdf) (270 KB, published August 13, 2012)	Budgets found adequate through the SIP approval process.
			Adequate (5/26/2010) Letter (4/2010) (pdf) (88.56 KB) April 22, 2010 and FR Notice (5/2010) (pdf) (144 KB, May 11, 2010)	Budgets found adequate through the adequacy review process.
Metro-East St. Louis	2008 8-hour ozone	maintenance plan	Adequate 3-1-2018 FR Notice (3/2018) (pdf) (237 KB, published March 1, 2018)	Budgets found adequate through the SIP approval process.
	1997 8-hour ozone	maintenance plan	Adequate (6/12/2012) FR Notice (6/2012) (pdf) (281 KB, published June 12, 2012)	Budgets found adequate through the SIP approval process.
		attainment demonstration	Adequate (2/20/2008) FR Notice (2/2008) (pdf) (146 KB, published February 5, 2008)	Budgets found adequate through the adequacy review process.
		attainment demonstration and maintenance plan	Withdrawn	Budgets prepared with Mobile 6.2. Adequacy review started August 5, 2010.
		attainment demonstration	Adequate (2/20/2008) FR Notice (2/2008) (pdf) (146 KB, published February 5, 2008 )	Budgets found adequate through the adequacy review process.

Indiana
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Indianapolis Area (Hamilton, Hendricks, Johnson, Madison, Marion, and Morgan Counties)	pm2.5	maintenance plan	Adequate (7/11/2013) FR Notice (7/2013) (pdf) (268 KB, published July 11, 2013)	Budgets found adequate through SIP approval process.
	pm2.5	attainment demonstration	Adequate (5/21/2010) Letter (4/2010) (pdf) (62.33 KB) April 12, 2010 and FR Notice (5/2010) (pdf) (144 KB, published May 6, 2010)	Budgets found adequate through the adequacy review process.
	8-hour ozone	maintenance plan	Adequate (10/19/2007) FR Notice (10/2007) (pdf) (155 KB, published October 19, 2007)	Budgets found adequate through SIP approval process.
Cincinnati-Hamilton OH-KY-IN Area (IN portion) Dearborn County Delaware County	2008 8-hour ozone	maintenance plan	Adequate (10/12/2016) Letter (8/2016) (pdf) (26.06 KB) August 26, 2016 and FR Notice (9/2016) (pdf) (191 KB, published September 27, 2016)	Budgets found adequate through the adequacy review process.
	1997 8-hour ozone	maintenance plan	Adequate (3/11/2010) Letter (1/2010) (pdf) (78.65 KB) January 14, 2010 and FR Notice (2/2010) (pdf) (142 KB, published February 24, 2010)	Budgets found adequate through the adequacy review process.
	1997 8-hour ozone	attainment demonstration	Adequate (5/8/2008) Letter (5/2008) (pdf) (90.88 KB) May 6, 2008 and FR Notice (4/2008) (pdf) (144 KB, published April 23, 2008) and Correction FR Notice (6/2008) (pdf) (140 KB, published June 3, 2008)	Budgets found adequate through the adequacy review process.
	1997 pm2.5	maintenance plan	Adequate (12/23/2011) FR Notice (12/2011) (pdf) (177 KB, published December 23, 2011)	Budgets found adequate through SIP approval process.
	1997 pm2.5	attainment demonstration		2008 attainment demonstration was replaced by 2011 redesignation and maintenance plan.
Delaware County	8-hour ozone	maintenance plan	Adequate (1/3/2006) FR Notice (11/2005) (pdf) (199 KB, published November 16, 2005)	Budgets found adequate through SIP approval process.
East Chicago (Lake County) and Indianapolis (Marion County)	carbon monoxide	limited maintenance plan	Adequate (3/20/2000) FR Proposed Rule (1/2000) (pdf) (214 KB, published January 19, 2000) and FR Final Rule (1/2000) (pdf) (233 KB, published January 19, 2000)	Budget adequate by virtue of SIP.
Evansville (Dubois, Vanderburgh, and Warrick Counties; Montgomery Township in Gibson County; Ohio Township in Spencer County; and Washington Township in Pike Count	8-hour ozone	maintenance plan	Adequate (7/15/2005) Letter (6/2005) (pdf) (34.05 KB, ) June 7, 2005 and FR Notice (6/2005) (pdf) (144 KB, published June 30, 2005)	Budgets found adequate through the adequacy review process.
	1997 pm2.5	maintenance plan	Adequate (9/27/2011) FR Notice (9/2011) (pdf) (173 KB, published September 27, 2011)	Budgets found adequate through SIP approval process.
Greene County	8-hour ozone	maintenance plan	Adequate (11/4/2005) Letter (9/2005) (pdf) (35.56 KB) September 29, 2005 and FR Notice (Greene County)(10/2005) (pdf) (144 KB, published October 20, 2005)	Budgets found adequate through the adequacy review process.
Jackson County	8-hour ozone	maintenance plan	Adequate (11/4/2005) Letter (9/2005) (pdf) (35.56 KB) September 29, 2005 and FR Notice (Jackson County) (10/2005) (pdf) (138 KB, published October 20, 2005)	Budgets found adequate through the adequacy review process.
Louisville, KY -IN Area (Clark, Jefferson, and Floyd Counties)	1997 pm2.5	maintenance plan	Adequate (9/9/2016) FR Notice (9/2016) (pdf) (243 KB, published September 9, 2016)	Budgets found adequate through the SIP approval process
	8-hour ozone	maintenance plan	Adequate (7/19/2007) FR Notice (7/2007)(pdf) (149 KB, published July 19, 2007)	Budgets found adequate through the SIP approval process.
Northwest Indiana (Lake and Porter Counties)	2008 8-hour ozone	15% ROP	Adequate (6/14/2018) Letter (3/2018) (pdf) (55.46 KB, March 8, 2018) and FR Notice (5/2018) (pdf) (212 KB, published May 30, 2018)	Budgets found adequate through the adequacy process.
Northwest Indiana (Lake and Porter Counties)	8-hour ozone	maintenance plan	Adequate (5/11/2010) FR Notice (5/2010) (pdf) (167 KB, published May 11, 2010)	Budgets found adequate through the SIP approval process.
Vigo County	8-hour ozone	maintenance plan	Adequate (12/7/2005) Letter (10/2005) (pdf) (22.91 KB) October 25, 2005 and FR Notice (11/2005) (pdf) (138 KB, published November 22, 2005)	Budgets found adequate through the adequacy review process.

Michigan
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Allegan County	2008 8-hour ozone	reasonable further progress	Adequate (4/15/2024) Letter (pdf) (222.85 KB, January 17, 2024) and FR Notice (3/2024) (pdf) (241 KB, published March 29, 2024)	Budgets found adequate through the adequacy review process
Allegan County	8-hour ozone	maintenance plan	Adequate (9/24/2010) FR Notice (9/2010)(pdf) (159 KB, published September 24, 2010)	Budgets found adequate through SIP approval process.
Benzie County	8-hour ozone	maintenance plan	Adequate (5/16/2007) Letter (8/2006) (pdf) (20.96 KB) August 15, 2006 and FR Notice (5/2007) (pdf) (199 KB, published May 16, 2007)	Budgets found adequate through SIP approval process.
Berrien County	2008 8-hour ozone	reasonable further progress	Adequate (4/15/2024) Letter (pdf) (222.85 KB, January 17, 2024) and FR Notice (3/2024) (pdf) (241 KB, published March 29, 2024)	Budgets found adequate through the adequacy review process
Berrien County	8-hour ozone	maintenance plan	Adequate (2/7/2007) Letter (11/2006) (pdf) (59.48 KB) November 29, 2006 and FR Notice (1/2007) (pdf) (140 KB, published January 23, 2007)	Budgets found adequate through the adequacy review process.
Cass County	8-hour ozone	maintenance plan	Adequate (2/7/2007) Letter (11/2006) (pdf) (59.48 KB) November 29, 2006 and FR Notice (1/2007) (pdf) (140 KB, published January 23, 2007)	Budgets found adequate through the adequacy review process.
Detroit	carbon monoxide	maintenance plan	Adequate (8/30/1998) FR Notice (6/1999) (pdf) (195 KB, published June 30, 1999)	Budget adequate by virtue of SIP approval
Flint	8-hour ozone	maintenance plan	Adequate (2/7/2007) < Letter (11/2006) (pdf) (59.48 KB) November 29, 2006 and FR Notice (1/2007) (pdf) (140 KB, published January 23, 2007)	Budget adequate through SIP approval process.
Grand Rapids (Kent and Ottawa Counties)	8-hour ozone	maintenance plan	Adequate (5/16/2007) Letter (8/2006) (pdf) (20.96 KB) August 15, 2006 and FR Notice (5/2007) (pdf) (200 KB, published May 16, 2007)	Budgets found adequate through SIP approval process.
Huron County	8-hour ozone	maintenance plan	Adequate (5/16/2007) Letter (8/2006) (pdf) (20.96 KB) August 15, 2006 and FR Notice (5/2007) (pdf) (200 KB, published May 16, 2007)	Budgets found adequate through SIP approval process.
Kalamazoo (Kalamazoo, Calhoun, and Van Buren Counties)	8-hour ozone	maintenance plan	Adequate (5/16/2007) Letter (8/2006) (pdf) (20.96 KB) August 15, 2006 and FR Notice (5/2007) (pdf) (200 KB, published May 16, 2007)	Budgets found adequate through SIP approval process.
Lansing (Ingham, Eaton, and Clinton Counties)	8-hour ozone	maintenance plan	Adequate (5/16/2007) Letter (8/2006) (pdf) (20.96 KB) August 15, 2006 and	Budgets found adequate through SIP approval process.
Mason County	8-hour ozone	maintenance plan	Adequate (5/16/2007) Letter (8/2006) (pdf) (20.96 KB) August 15, 2006 and FR Notice (5/2007) (pdf) (200 KB, published May 16, 2007)	Budgets found adequate through SIP approval process.
Muskegon County	2008 8-hour ozone	reasonable further progress	Adequate (4/15/2024) Letter (pdf) (222.85 KB, January 17, 2024) and FR Notice (3/2024) (pdf) (241 KB, published March 29, 2024)	Budgets found adequate through the adequacy review process
Muskegon County	8-hour ozone	maintenance plan	Adequate 2/7/2007) Letter (11/2006) (pdf) (59.48 KB) November 29, 2006 and FR Notice (1/2007) (pdf) (140 KB, published January 23, 2007)	Budgets found adequate through the adequacy review process.
Southeast (Detroit, Ann Arbor)	8-hour ozone	maintenance plan	Adequate (6/27/2009) FR Notice (6/2009) (pdf) (149 KB, published June 29, 2009)	Budgets found adequate through SIP approval process.

Ohio
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Canton - Massilon	pm2.5	attainment demonstration	Adequate (2/10/2010) Letter (12/2009) (pdf) (73.33 KB) December 7, 2009 and FR Notice (1/2010) (138 KB, published January 26, 2010)	Budgets found adequate through the adequacy review process.
Canton - Massilon	8-hour ozone	maintenance plan	Adequate (4/18/2007) Letter (1/2007) (pdf) (68.23 KB) January 22, 2007 and FR Notice (4/2007) (pdf) (149 KB, published April 3, 2007)	Budgets found adequate through the adequacy review process.
Cincinnati-Hamilton OH-KY-IN Area (OH portion)	pm2.5	maintenance plan	Adequate (12/23/2011) FR Notice (12/2011) (pdf) (177 KB, published December 23, 2011)	Budgets found adequate through SIP approval process.
	pm2.5	attainment demonstration		2008 attainment demonstration was replaced by 2011 redesignation and maintenance plan.
	2008 8-hour ozone	maintenance plan	Adequate (10/12/2016) Letter (8/2016) (pdf) (26.06 KB) August 26, 2016 and FR Notice (9/2016) (pdf) (191 KB, published September 27, 2016)	Budgets found adequate through the adequacy review process.
	1997 8-hour ozone	maintenance plan	Adequate (3/11/2010) Letter (1/2010) (pdf) (81.14 KB) January 14, 2010 and FR Notice (2/2010) (pdf) (142 KB, published February 24, 2010)	Budgets found adequate through the adequacy review process.
	1997 8-hour ozone	attainment demonstration	Adequate (6/27/2008) Letter (5/2008) (pdf) (90.88 KB) May 6, 2008 and FR Notice (6/2008) (pdf) (148 KB, published June 12, 2008)	Budgets found adequate through the adequacy review process.
Cleveland - Akron	pm2.5	maintenance plan	Adequate (9/18/2013) FR Notice (9/2013) (pdf) (242 KB, published September 18, 2013)	Budgets found adequate through SIP approval process.
Cleveland - Akron	pm2.5	attainment demonstration	Adequate (2/10/2010) Letter (12/2009) (pdf) (76.32 KB) December 7, 2009 and FR Notice (1/2010) (pdf) (143 KB, published January 26, 2010)	Budgets found adequate through the adequacy review process.
Cleveland - Akron - Lorain Area (Ashtabula, Cuyahoga, Geauga Lake, Lorain, Medina, Portage, and Summit Counties)	2008 8-hour ozone	maintenance plan	Adequate (10/12/2016) Letter (8/2016) (pdf) (24.87 KB) August 23, 2016 and FR Notice (9/2016) (pdf) (191 KB, published September 27, 2016)	Budgets found adequate through the adequacy review process.
	1997 8-hour ozone	maintenance plan	Adequate (6/04/2009) Letter (3/2009) (pdf) (61.6 KB) March 30, 2009 and FR Notice (5/2009)(pdf) (139 KB, published May 20, 2009)	Budgets found adequate through the adequacy review process.
Columbus Area (Delaware, Fairfield, Franklin, Knox, Licking, and Madison Counties)	2015 8-hour ozone	maintenance plan	Adequate (8/29/2019) Letter (6/2019) (pdf) (312.91 KB, June 5, 2019) and FR Notice (8/2019) (pdf) (194 KB, published August 14, 2019)	Budgets found adequate through the adequacy process.
	2008 8-hour ozone	maintenance plan	Adequate (10/12/2016) Letter (8/2016) (pdf) (24.79 KB) August 23, 2016 and FR Notice (9/2016) (191 KB, published September 27, 2016)	Budgets found adequate through the adequacy process.
	1997 pm2.5	maintenance plan	Adequate (11/7/2013) FR Final Rule (11/2013) (pdf) (258 KB, published November 7, 2013)	Budgets found adequate through the SIP approval process.
	1997 pm2.5	attainment demonstration	withdrawn	Attainment plan budgets prepared with Mobile 6.2 replaced with maintenance plan budgets prepared using MOVES.
	1997 8-hour ozone	maintenance plan	Adequate (6/4/2009) Letter (3/2009) (pdf) (53.96 KB) March 30, 2009 and FR Notice (5/2009) (pdf) (139 KB, published May 20, 2009)	Budgets found adequate through the adequacy review process.
Cuyahoga County	carbon monoxide	limited maintenance plan	Adequate (7/31/2006) FR Notice (6/2006)(pdf) (153 KB, published June 1, 2006)	Budgets adequate through SIP approval process.
Dayton - Springfield	pm2.5	maintenance plan	Adequate (9/26/2013) FR Notice (9/2013) (pdf) (237 KB, published September 26, 2013)	Budgets adequate through SIP approval process.
	pm2.5	attainment demonstration	withdrawn	Attainment plan budgets prepared with Mobile 6.2 replaced with maintenance plan budgets prepared using MOVES.
	8-hour ozone	maintenance plan	Adequate (4/18/2007) Letter (2/2007) (pdf) (58.32 KB) February 9, 2007 and FR Notice (6/2006) (pdf) (153 KB, published June 1, 2006)	Budgets found adequate through the adequacy review process.
Huntington Ashland	pm2.5	maintenance plan	Adequate (10/14/2011) Letter (8/2011) (pdf) (973.53 KB) August 11, 2011 and FR Notice (9/2011) (pdf) (145 KB, published September 29, 2011)	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Huntington Ashland	pm2.5	attainment demonstration	Adequate (12/22/2009) FR Notice (12/2009) (pdf) (134 KB, published December 7, 2009)	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Lima	8-hour ozone	maintenance plan	Adequate (4/18/2007) Letter (2/2007) (pdf) (58.32 KB) February 9, 2007 and FR Notice (6/2006) (pdf) (154 KB, published June 1, 2006)	Budgets found adequate through the adequacy review process.
Parkersburg - Marietta	pm2.5	maintenance plan	Adequate (8/29/2013) FR Notice (8/2013) (pdf) (237 KB, published August 29, 2013)	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Parkersburg - Marietta	8-hour ozone	maintenance plan	Adequate (4/18/2007) Letter (12/2006) (pdf) (66.13 KB) December 28, 2006 and FR Notice (8/2013) (pdf) (237 KB, published August 29, 2013)	Budgets found adequate through the adequacy review process.
Steubenville - Weirton	pm2.5	attainment demonstration	Adequate (2/10/2010) Letter (12/2009) (pdf) (73.33 KB) December 7, 2009 and FR Notice (1/2010) (pdf) (138 KB, published January 26, 2010)	Budgets found adequate through the adequacy review process.
Steubenville - Weirton	8-hour ozone	maintenance plan	Adequate (4/18/2007) Letter (1/2007) (pdf) (54.22 KB) January 22, 2007 and FR Notice (6/2006) (pdf) (154 KB, published June 1, 2006)	Budgets found adequate through the adequacy review process.
Toledo (Lucas and Wood Counties)	8-hour ozone	maintenance plan	Adequate (8/9/2007) FR Notice (8/2007) (pdf) (158 KB, published August 9, 2007)	Budgets found adequate through SIP approval process.
Washington County	pm2.5	attainment demonstration	Adequate (12/22/2009) FR Notice (12/2009) (pdf) (136 KB, published December 7, 2009)	Regional insignificance finding for PM2.5 and NOx made through the adequacy review process.
Wheeling (Belmont County)	pm2.5	maintenance plan	Adequate (8/29/2013) FR Notice (8/2013) (pdf) (237 KB, published August 29, 2013)	Regional insignificance finding for PM2.5 and NOx made through the SIP approval process.
Wheeling (Belmont County)	8-hour ozone	maintenance plan	Adequate (4/18/2007) Letter (1/2007) (pdf) (68.23 KB) January 22, 2007 and FR Notice (6/2006) (pdf) (154 KB, published June 1, 2006)	Budgets found adequate through the adequacy review process.
Youngstown (Columbiana and Trumbull Counties)	8-hour ozone	maintenance plan	Adequate (6/12/2007) FR Notice (6/2007) (pdf) (160 KB, published June 12, 2007)	Budgets found adequate through SIP approval process.

Wisconsin
Area	Pollutant	SIP Submission	Finding (date budgets apply)	Additional Information/ Comments
Door County	8-hour ozone	maintenance plan	Adequate(5/21/2010) Letter (5/2010) (pdf) (98.77 KB) May 2010 and FR Notice (5/2010) (pdf) (144 KB, published May 6, 2010)	Budgets found adequate through the adequacy review process.
Wisconsin Portion of Chicago-Naperville, IL-IN-WI (Kenosha, Wisconsin)	2008 8-hour ozone	maintenance plan	Adequate (4/11/2022) FR Notice (4/2022) (pdf) (248 KB, published April 11, 2022)	Budgets found adequate through the adequacy review process.
		attainment plan	Adequate (11/15/2017) Letter (9/2017) (pdf) (284.38 KB, September 6, 2017) FR Notice (10/2017) (pdf) (186 KB, published October 31, 2017)	budgets found adequate through the adequacy process.
		early progress plan	Adequate (4/16/2015) Letter (3/2015) (pdf) (45.66 KB) March 13, 2015 and FR Notice (4/2015) (pdf) (195 KB, published April 1, 2015)	Budgets found adequate through the adequacy review process.
Kewaunee County	8-hour ozone	maintenance plan	Adequate (12/19/2007) FR Notice (pdf) (145 KB)	Budgets found adequate through the adequacy review process.
Manitowoc	2015 8-hour ozone	maintenance plan	Adequate (3/31/2022) FR Notice (3/2022) (pdf) (236 KB, published March 31, 2022)	Budgets found adequate through the adequacy review process.
Manitowoc	2008 8-hour ozone	maintenance plan	Adequate (5/21/2010) Letter (5/2010) (pdf) (98.77 KB) May 2010 and FR Notice (5/2010) (pdf) (144 KB, published May 6, 2010)	Budgets found adequate through the adequacy review process.
Milwaukee	8-hour ozone	maintenance plan	Adequate (7/31/2012) FR Notice (7/2012) (pdf) (276 KB, published July 31, 2012)	Budgets found adequate through the SIP approval process.
Milwaukee	8-hour ozone	maintenance plan	Adequate (5/21/2010) Letter (5/2010) (pdf) (98.77 KB) May 2010 and FR Notice (5/2010) (pdf) (144 KB, published May 6, 2010)	Budgets found adequate through the adequacy review process.
Sheboygan	2008 8-hour ozone	Attainment plan/	Adequate (4/20/2018) Letter (1/2018) (pdf) (197.83 KB, January 17, 2018) FR Notice (4/2018) (186 KB, published April 5, 2018)	budgets found adequate through the adequacy process.
	1997 8-hour ozone	maintenance plan	Adequate (4/16/2015) FR Notice (4/2015) (pdf) (195 KB, published April 1, 2015)	Budgets found adequate through the SIP approval process.
		early progress plan	Adequate (4/16/2015) Letter (3/2015) (pdf) (45.66 KB) March 13, 2015 and FR Notice (4/2015) (pdf) (195 KB, published April 1, 2015)	Budgets found adequate through the adequacy review process.
		maintenance plan	Adequate (5/21/2010) Letter (5/2010) (pdf) (98.77 KB) May 2010 and FR Notice (5/2010) (pdf) (144 KB, published May 6, 2010)	Budgets found adequate through the adequacy review process.