BOARD: 

Paul C Aughay, 111 

ChairmDzr 

BOARD: 

Henry C. Scoa 

C. Ed Huntu. Commissioner 

hmoting amdpmt~tr'ng rhc bed% cftbepublic and the mvironlllknt 

M. David Mitchell, MD 

GkM A. Ma 

Coleman F. Budrhow, MD 

April 29,20 10 

CERTIFIED MAIL 

A. Stanley Meiburg, Acting Regional Administrator 

US. EPA Region 4 

Sam Nunn Atlanta Federal Center 

61 Forsyth Street, SW 

Atlanta, GA 30303-8909 

Re: South Carolina Air Quality Implementation Plan 

8-Hour Ozone Attainment Demonstration for the Rock Hill-Fort Mill Area Transportation 

Study Metropolitan Planning Organization 

Dear Dr. Meiburg: 

Please find attached a revised South Carolina attainment demonstration for the York County portion of the 

CharlotteGastonia-Rock Hill NCSC 8-Hour Ozone (Metrolina) Nonattainment Area. This attachment 

contains the previously submitted attainment demonstration for the York County portion of the Metrolina 

nonattainment area, along with the supplemental information required by the United States Environmental 

Protection Agency (EPA) for approvability. 

Sections 172(c), 182(a), and l82(b) of the CAA prescribe the requirements for ozone nonattainment areas. 

All designated nonattainment areas must comply with the general requirements mandated by Section 

l72(c) of the CAA. As a Subpart 2, moderate ozone nonattainment area, the Metrolina area must also meet 

the additional requirements prescribed by Section 182 of the CAA. Each state in which all or part of a 

moderate nonattainrnent area is located shall make the submissions described under Section 182(a) 

(relating to marginal nonattainment areas) and shall also submit the revisions to the applicable 

implementation plan described under Section 182(b) with respect to moderate nonattainment areas. The 

South Carolina Department of Health and Environmental Control (Department) believes it has, through the 

measures outlined in the enclosed 8-Hour Ozone Attainment Demonstration for the Portion of York 

County, SC Within the Rock Hill-Fort Mill Area Transportation Study (RFATS) Metropolitan Planning 

Organization (MPO), fulfilled these requirements. 

This attainment demonstration was first submitted on August 3 1,2007. On November 17, 2008, the 

Department received correspondence fiom the EPA stating that the EPA could not approve the SIP 

attainment demonstration because it believed that the area was unlikely to attain the 1997 ozone standard 

by June 15,20 10 and offered the Department the option to voluntarily request a reclassification ("bumpup") to "Serious" to avoid disapproval of the SIP. As a result the Department withdrew the attainment 

demonstration in order to address EPA's concerns. 

SOUTH CAROLINA DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL 

2600BullStreet Colu~~~l Pho~($Q3)838-8432 www&ec.gov 
Dr. Meiburg 

April 29, 2010 

Page 2 

It is worthwhile to note that the ozone concentrations decreased, along with the design value, in 2009 to 

such a degree that the area did qualifi to request a one-year extension of the attainment date. If the EPA 

had not prematurely imposed this decision upon the Department until all the information, such as the 2009 

ozone data, was available to evaluate, withdrawal of the attainment demonstration, and consequently the 

additional burdens of revising and resubmitting, would have been avoided. 

As directed by EPA, the supplement to the attainment demonstration includes: 

= Attainment modeling for 20 1 1, 

Updates to the air quality data analysis including the 2009 ambient data, 

Additional updated information on emissions and controls that would affect the air quality for the 

2010 ozone season, and 

A Volatile Organic Compound (VOC) motor vehicle emissions budget (MVEB). 

The Dep-ent published a Notice of General Public Interest which included an announcement of a 30- 

day comment period and opportunity to request a public hearing in the State Register on February 26, 

2010. A prehearing package was submitted to the EPA on February 26,2010. No request for a public 

hearing was received, and the public comment period closed on March 29,2010. This notice, comments 

received, and Department response are included with this submittal as attachment 7. Pursuant to 40 CFR 

5 1.102, no request for a public hearing was received by the close of the comment period, so the 

hearing scheduled for April 5,2010, was canceled, as posted on the Department website. 

RACT and Control Techniques Guidelines (CTGs) are not addressed within today's submittal. The caseby-case RACT analysis for existing sources located in the ozone nonattainment area with the potential to 

emit greater than 100 tons per year of NOx was submitted on August 3 1,2007. Applicability 

determinations for Group IlI and Group IV CTGs were subsequently completed and negative declarations 

were published in the State Register on December 26,2008, and May 22,2009, respectively. 

We would like to request that EPA state in its approval of the motor vehicle emissions budgets that they 

may be replaced in the future by new adequate budgets as provided for in 40 CFR 93.1 18(e)(l). 

This submittal includes: 

Electronic copies of the requested supplemental information, with Appendix S.1, Attainment Test. 

The attainment demonstration executive summary and narrative, Appendix F.3 (Mobile Source 

Emissions), Appendix 0 (Reasonable Further Progress) appended with a 2008 VOC MVEB, and a 

discussion of the adjustments made to these original documents. 

Notice of General Public Interest, comments received and the Department's response. 

A compact disk (CD) is being sent by mail which will include the entire attainment demonstration, 

including updates, and the requested supplemental information. The electronic copies that the Department 

is sending to you via email today are identical to their counterparts on the CD. 
Dr. Meiburg 

April 29,2010 

Page 3 

Should you or your staff have any questions or comments concerning this SIP attainment demonstration, 

please contact Ms. Leslie Coolidge of the Bureau of Air Quality at 803-898-3208 or via electronic mail at 

coolidln@dhec.sc.gov. 

3- .. -- +jdLe Sincere1 .+ 

., , Y '.. - 1'- 

h.-t h , Robert W. King, Jr., P.E. -. , 

Deputy Commissioner 

Environmental Quality Control 

South Carolina Department of Health and Environmental Control 

ec: Richard A. Schutt, Chief, Air Planning Branch, EPA Region 4 

Lynorae Benjamin, Chief, Regulatory Development Section, EPA Region 4 

Jane Spann, Ozone Coordinator, EPA Region 4 

Zuri Farngalo, Regulatory Development Section, EPA Region 4 

Myra Reece, Chief, BAQ, SCDHEC 

Renee Shealy, Assistant Bureau Chief, BAQ, SCDHEC 

Robert J. Brown, Jr., Director, Div. of Air Assessment, Innovations and Regulation, BAQ, 

SCDHEC 

L. Nelson Roberts, Jr., Manager, Air Quality Standards & Assessment Section, BAQ SCDHEC 

Maeve S. R. Mason, Regulation and SIP Management Section, BAQ, SCDHEC 

Keith Overcash, Director, North Carolina Department of Environment and Natural Resources, 

Division of Air Quality 

Laura Boothe, Attainment Planning Branch Supervisor, North Carolina Department of 

Environment and Natural Resources, Division of Air Quality 

Attachments: - -. 

1. Supplement to the South Carolina 8-Hour Ozone Attainment Demonstration (originally submitted 

August 3 1,2007) for the portion of York County, South Carolina within the RFATS MPO, part of the 

Charlotte-Gastonia-Rock Hill, NCSC 8-Hour Ozone Nonattainment Area 

2. Appendix S. 1 Attainment Test 

3. RFATS 8-Hour Ozone Attainment Demonstration Executive Summary and Narrative with limited 

revisions 

4. Appendix F.3 (Mobile Source Emissions) with limited revisions 

5. Appendix 0 (Reasonable Further Progress) amended with a 2008 MVEB 

6. Discussion of adjustments made to original documents 

7. Notice of General Public Interest, comments received, and the Department's response 

8. Legal Authority