Pat McCrory Governor Aprill6, 2015 Donald 

### R. van der Vaart Secretary

Heather McTeer Toney Regional Administrator USEPA Region 4 Atlanta Federal Center 61 Forsyth Street, SW Atlanta, GA 30303-8960 Subject: Redesignation Demonstration and Maintenance Plan for the Charlotte-GastoniaSalisbury, North Carolina 2008 8-Hour Ozone Marginal Nonattainment Area, and Clean Air Act Section 110(1) Non-Interference Demonstration to Support the Gasoline Reid Vapor Pressure (RVP) Standard Relaxation in Gaston and Mecklenburg Counties
Dear Ms. Toney:
I am pleased to submit the following two final submissions:

• "Redesignation Demonstration andMaintenance Planfor Charlotte-GastoniaSalisbury, North Carolina 2008 8-Hour Ozone Marginal NonattainmentArea"

• "CleanAirActSection 110(l) Non-Interference Demonstration to Support the Gasoline Reid Vapor Pressure (RVP) StandardRelaxation in Gaston and Mecklenburg Counties"
Enclosed is one hard copy ofthe complete package containing the redesignation demonstration and maintenance plan, the RVP Clean Air Act Section 110(1) non-interference demonstration, as well as the supporting documentation. An exact duplicate electronic copy is being provided with Motor Vehicle Emission Simulator (MOVES2014) model input and output files.
The Division ofAir Quality (DAQ) issued a public notice announcement on March 9, 2015, in accordance with 40 CFR 51.102, indicating that the "Redesignation Demonstration and Maintenance Planfor Charlotte-Gastonia-Salisbury, North Carolina 2008 8-Hour Ozone MarginalNonattainmentArea " and the "CleanAirActSection 11

### O(l) Non-Interference Demonstration to Support the Gasoline Reid Vapor Pressure (RVP) StandardRelaxation in Gaston andMecklenburg Counties " were available for public comment and posted on the DAQ website for review. The public notice announcement indicated that anyone mayrequest a public hearing.Heather McTeerToney April16, 2015 Page 2 In addition to posting on the DAQ website, the public notice announcement was sent to a number ofe-mail distribution lists managed bythe DAQ that includes numerous stakeholders from industry and environmental groups. The DAQ believes that sending the public notice announcement to these groups is more effective than publishing the notice in a few local newspapers and is consistent with the requirements described in the April6, 2011 , memorandum, "Regional Consistency for the Administrative Requirements of the State Implementation Plan Submittals andthe Use of LetterNotices. " Additionally, the Rich Site Summary (RSS) feed on the DAQ website offers regular delivery to persons interested in receiving updates to the website content. The document was also made available for review during normal business hours at the DAQ Central Office in Raleigh and the Mooresville Regional Office.
The public comment period was open from March 9, 2015 through AprillO, 2015. The DAQ did not receive any requests for a public hearing. Comments were received from the EPA and the North Carolina Petroleum and Convenience Marketers (NCPCM). The EPA offered no comments at this time

. The NCPCM commented in support ofthe DAQ's request to the EPA to relax the summertime RVP standard from 7.8 pounds per square inch (psi) to 9.0 psi in Gaston and Mecklenburg Counties. The comments received during the public comment period did not require any revisions to these two submissions. Copies ofletters submitted by the commenters are provided in Appendix C -PublicNotice Report.
The DAQ believes it has in good faith addressed the requirements ofSection 107(d)(3)(E) ofthe Clean Air Act to redesignate the Charlotte-Gastonia-Salisbury nonattainment area to attainment ofthe 2008 8-hour ozone standard. The DAQ also believes that it has in good faith addressed the requirements ofSection 110(1) ofthe Clean Air Act to Support the Gasoline RVP Standard Relaxation in Gaston and Mecklenburg Counties. In addition, the DAQ has included the revised redesignation demonstration and maintenance plan to incorporate the relaxation ofthe summertime RVP gasoline standard in Gaston and Mecklenburg Counties.
Ifyou have any questions regarding this submittal, please contact Randy Strait ofmy staffat (919) 707-8721.

SCH/rps

Attachments

cc: Michael Abraczinskas, DAQ Sincerely,

# ~C~~ Sheila C. Holman, Director Division ofAir Quality, NCDENRHeather McTeer Toney April16, 2015 Page 3 Sushma Masemore, DAQ Randy Strait, DAQ Scott Davis, USEPA Lynorae Benjamin, USEPA Leslie Rhodes, Mecklenburg County Air Quality Myra Reese, SCDHEC