South Carolina 1997 8-Hour Ozone Attainment Demonstration
Charlotte-Gastonia-Rock Hill, North Carolina-South Carolina (Metrolina) State Implementation
Plan (SIP)
On April 30, 2004, the U.S. Environmental Protection Agency (EPA) issued designations for the 1997 8-hour ozone National Ambient Air Quality Standard (NAAQS). Although the monitor in York County, South Carolina was meeting the 1997 8-hour ozone NAAQS, EPA decided that the portion of York County, South Carolina within the Rock Hill-Fort Mill Area Transportation Study (RFATS) Metropolitan Planning Organization (MPO) should be part of the Metrolina nonattainment area due to its proximity to Charlotte. The area was classified under Subpart 2 of the Clean Air Act, as amended, (CAA) as a "moderate" nonattainment area for ozone.
DHEC completed submittal of an amendment to the State Implementation Plan (SIP) on August 31, 2007, which demonstrated that the Metrolina nonattainment area, including the affected portion of York County, would attain the 1997 ozone standard by the end of 2009 and meet the attainment date of June 15, 2010.
In late 2008, after further review of the South Carolina and North Carolina attainment demonstrations and air quality data from the 2007 and 2008 ozone seasons, EPA concluded that the Metrolina nonattainment area would be unable to meet the attainment date of June 15, 2010. As a result, EPA sent South Carolina and North Carolina letters on November 17, 2008, stating it intended to disapprove both states' attainment demonstrations for the 1997 8-hour ozone NAAQS by January 9, 2009, unless the states requested voluntary reclassification from a "moderate" nonattainment area to "serious."
Supplement to the South Carolina 8-Hour Ozone Attainment Demonstration (April 29, 2010)
South Carolina 8-Hour Ozone Attainment Demonstration State Implementation
Plan (April 29, 2010)
- Attainment Demonstration - ADJUSTED
- Adjustments to South Carolina 8-Hour Ozone Attainment Demonstration State Implementation Plan
- Appendix A - Correspondence and Guidance Documents
- Appendix B - I & M Supporting Documents
- Appendix C - Air Quality Data
- Appendix D - Modeling Protocol
- Appendix E - Emissions Inventory Summary
- Appendix F.1 - Point Source Emissions Inventory Documentation
- Appendix F.2 - Non-point and Non-road Mobile Source Emissions Inventory
- Appendix F.3 - On-road Mobile Source Emissions Inventory - ADJUSTED
Appendix G - Quality Assurance of the Emissions Inventories
- Appendix H - Emission Modeling Deviation from Defaults
- Appendix I - Meteorological Model Performance
- Appendix J - Model Performance Evaluation
- Appendix K - Modeling Results
- Appendix L - Attainment Test
- Appendix M - Adopted State Measures
Appendix M 2 - Adopted State Control Measures
- R61-62.1 Definitions and General Requirements
- R61-62.2 Prohibition of Open Burning
- R61-62.5 Std2 Ambient Air Quality Standards
- R61-62.5 Std5.1 BACT-LAER for VOC
- R61-62.5 Std5.2 Control of Oxides of Nitrogen
- R61-62.5 Std5 Volatile Organic Compounds
- R61-62.5 Std7 Prevention of Significant Deterioration
- R61-62.5 Std7.1 Nonattainment New Source Review
- R61-62.96 NOX Budget Trading Program
- R61-62.99 NOX Budget for Sources Not in Trading Program
- Appendix N - Grid Resolution Journal Article 04052007
- Appendix O - Reasonable Further Progress - ADJUSTED
- Appendix P - Contingency Measures
- Appendix Q - VISTAS Supporting Documentation
- Appendix R - RACT – NOT WITHDRAWN*
- Appendix S - RFATS Transportation Conformity Correspondence
- *Appendix R: RACT from the original attainment demonstration submitted is not included as it is not a part of the attainment demonstration that was withdrawn.
- Extension of Attainment Date for the Charlotte-Gastonia-Rock Hill, North Carolina-South Carolina 1997 8-Hour Ozone Moderate Nonattainment Area (May 31, 2011)
- Letter Correcting EPA Letter Stopping Sanctions Clock for the Metrolina Attainment Demonstration (June 18, 2010)
- Notice of Final Amendment to Air Quality State Implementation Plan (May 28, 2010)
- Request for a One-Year Extension of the 8-hour Ozone Attainment Date (May 6, 2010)
- Transmittal letter (April 29, 2010)
- Notice of General Public Interest, Comments and Response (April 29, 2010)
- DHEC letter to EPA (November 13, 2009)
- Finding of Failure to Submit (May 8, 2009)
- DHEC letter to EPA (December 22, 2008)
- EPA letter to DHEC (November 17, 2008)
- Legal Authority
- Map of Charlotte-Gastonia-Rock Hill, North Carolina-South Carolina Nonattainment Area (EPA)
For more information please contact the Bureau of Air Quality at (803) 898-4123 or by email.