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NCDENR 

North Carolina Department of Environment and Natural Resources 

Beverly Eaves Perdue 

Governor 

Gwendolyn Keyes Fleming 

Regional Administrator 

USEP A Region 4 

Atlanta Federal Center 

61 Forsyth Street, SW 

Atlanta, GA 30303-8960 

Dear Ms. Fleming: 

Division of Air Quality 

Sheila C. Holman 

Director 

November 2, 2011 

Dee Freeman 

Secretary 

I am pleased to submit the Redesignation Demonstration and Maintenance Plan for the 

Charlotte-Gastonia-Rock Hill, North Carolina-South Carolina 1997 8-hour Ozone Nonattainment 

Area (referred to as the Metrolina area). Enclosed is one hard copy of the complete package 

containing the redesignation demonstration and maintenance plan, as well as the supporting 

documentation as to how the emission estimates were developed and an exact duplicate electronic 

copy on compact disk. Additionally, the disk includes the MOVES model input and output files as 

well as a copy of the South Carolina redesignation demonstration and maintenance plan for their 

portion of the nonattainment area for your reference. 

The maintenance plan includes three major items. The first is an analysis of the ambient 

air quality data demonstrating attainment with the 1997 8-hour ozone National Ambient Air 

Quality Standard. The second is an emissions inventory comparison showing that the 1997 

8-hour ozone standard can be maintained for 10 years. The third is the contingency measures to 

be implemented in the event of an air quality violation or other indications of an impending 

violation. Thus, the maintenance plan fulfills the requirements of Section 17 5 A (b) of the 

Federal Clean Air Act as amended. 

The opportunity to request a public hearing, in accordance with 40 CFR 51.102, and the 

public comment period were noticed in the local newspapers on Thursday, May 19, 2011. No 

public hearing was requested. The public comment period was open from Friday, May 20, 2011 

through Thursday, June 23, 2011. There were no written requests for a public hearing. Comments 

were received from the United States Environmental Protection Agency (USEP A), Cabarrus 

Rowan Metropolitan Planning Organization and Mecklenburg Union Metropolitan Planning 

Organization. 

One ofthe USEPA's comments expressed concerns with the Reasonable Available Control 

Technology State Implementation Plan (RACT SIP) for the Metrolina area and the ability of the 

USEPA to move forward with approving the redesignation demonstration. The North Carolina 

Division of Air Quality will work with the USEP A Region 4 staff to address the concerns with the 

1641 Mail Service Center, Raleigh, North Carolina 27699-1641 

2728 Capital Blvd., Raleigh, NC 27604 

Phone: 919-733-3340 I FAX 919-715-7175 I Internet: www.ncair.org 

An Equal Opportunity/Affirmative Action Employer 

N~rth Carolina 

)Vaturall!f 
Ms. Fleming 

November 2, 2011 

Page2 

Metrolina RACT SIP as quickly as possible so that the agency can start the federal approval 

process for the redesignation demonstration and maintenance plan for the Metrolina region. If you 

should have any questions, please contact Laura Boothe of my staff at (919) 733-1488. 

SCH/lab 

Attachment 

cc: Michael Abraczinskas 

Laura Boothe 

Dick Schutt 

Jane Spann 

Sincerely, 

Sheila C. Holman