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State Implementation Plan (SIP) - 2015 Eight-hour Ozone Standard

Nonattainment Area Recommendation

Area Designation

Letter to U.S. EPA

Document

Appendix(s)

Public Hearing Results

U.S. EPA 

(120-day) Response

Ohio EPA Response

Other Communications

Final Rule Date and FR Notice

Effective Date

Cleveland/Columbus/Cincinnati Areas  
Sept. 30, 2016
 

September 2016

 

A-D

 

See Appendix D

Dec. 20, 2017
Letter

Dec. 20, 2017
TSD Cleveland/ Columbus

Dec. 20, 2017
TSD Cincinnati,
Ohio/Kentucky/Indiana
    June 4, 2018
83 FR 25776

Carroll County Correction
Oct. 16, 2018
83 FR 52157
Aug. 3, 2018
Remainder of the State Not Provided by USEPA for Attainment/
Unclassifiable Areas
   

Nov. 16, 2017
82 FR 54232

Van Wert County Correction
Dec. 3, 2018
83 FR 62269

Jan. 16, 2018

Attainment Demonstration

Marginal Nonattainment Areas

Ohio's nonattainment areas under the 2015 ozone standard were initially all classified as marginal nonattainment. Under section 182(a) of the Clean Air Act Amendments, marginal areas had up to three years from designation to attain the National Ambient Air Quality Standard (August 3, 2021), and were not required to submit a traditional attainment demonstration. Marginal areas were required to submit only the emissions inventory and an emissions statement program to satisfy the attainment demonstration requirements. These requirements did not apply to the Columbus area because the Columbus area was redesignated to attainment effective August 31, 2019.

Area

Letter to U.S. EPA

Documents

Appendix(s)

Public Hearing Results 

Other Communication

Proposed Rule Date and FR Notice

Final Rule Date and FR Notice

Effective Date

Cleveland/Cincinnati Areas July 24, 2020 July, 2020 A-G Public Notice in Appendix G   Nov. 5, 2020
85 FR 70554
Mar. 3, 2021
85 FR 12270
Apr. 2, 2021

Moderate Nonattainment Areas

The Cincinnati and Cleveland nonattainment areas, currently designated as marginal nonattainment for the 2015 ozone standard, did not attain the ozone standard by the end of the 2020 ozone season (October 31). On April 13, 2022, (87 FR 21842) U.S. EPA proposed to bump-up these areas to moderate nonattainment, which triggers additional requirements under Clean Air Act (CAA).  Ohio EPA is currently planning for the bump-up. Information and resources will be provided on the Moderate Ozone Planning webpage as they are developed. Note: U.S. EPA has also proposed to redesignate the Cincinnati nonattainment area to attainment for the 2015 ozone standard based upon 2019-2021 ozone monitoring data. If the redesignation is finalized prior to U.S. EPA’s final action on the bump-up, the Cincinnati area is not expected to be included in the bump-up to moderate nonattainment. 

Area Designation

Letter to U.S. EPA

Document

Appendix(s)

Public Hearing Results

U.S. EPA 

(120-day) Response

Ohio EPA Response

Other Communications

Final Rule Date and FR Notice

Effective Date

Reasonably Available Control Technology (RACT) SIP for Cleveland/Cincinnati Areas March 30, 2022 March  2022

Appendices A-I [PDF]
Appendix D2 - 5 PerCent Equivalency
 Analysis for OAC Rule 3745-21-26
 
[Excel .xlsx]

           

Clean Data Requests, Redesignations and Maintenance Plans

Nonattainment Area

Original Classification

Letter to U.S. EPA

Document

Appendix(s)

Public Hearing Results

Other Communication

Proposed Rule Date and FR Notice

Final Rule Date and FR Notice

Effective Date

Columbus Marginal Apr. 23, 2019 April 2019 A-D     July 3, 2019
84 FR 31814
Aug. 21, 2019
84 FR 43508
Aug. 21, 2019
Cincinnati Marginal Dec. 21, 2021 Dec. 2021 A-D     Feb. 11, 2022
87 FR 7978
June 9, 2022
87 FR 35104
June 9, 2022