Appendix C

Public Notice Report, 

Comments Received and Responses
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Public Notice Report, Comments Received, and Responses i

Charlotte, Raleigh/Durham & Winston-Salem Appendix C

CO Limited Maintenance Plan August 2, 2012

TABLE OF CONTENTS

Public Notice Report........................................................................................................................1

Comment Letter: 7/30/2012, R. Scott Davis, Chief of Air Planning Branch, USEPA Region 4 ...3

Signed Public Notice Language.......................................................................................................5
Public Notice Report, Comments Received, and Responses ii

Charlotte, Raleigh/Durham & Winston-Salem Appendix C

CO Limited Maintenance Plan August 2, 2012

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Public Notice Report, Comments Received, and Responses 1

Charlotte, Raleigh/Durham & Winston-Salem Appendix C

CO Limited Maintenance Plan August 2, 2012

Public Notice Report

For 

The North Carolina Limited Maintenance Plan 

for the Charlotte, Raleigh/Durham, and Winston-Salem 

Carbon Monoxide Maintenance Areas

On June 29, 2012, a draft version of the North Carolina limited maintenance plan for the

Charlotte, Raleigh/Durham, and Winston-Salem carbon monoxide maintenance areas was 

submitted to the U. S. Environmental Protection Agency (USEPA). A request for public hearing, 

in accordance with 40 CFR 51.102, and the public comment period were noticed on the North 

Carolina Division of Air Quality (NCDAQ) website on June 29, 2012. The public comment 

period was open from June 29, 2012 through July 31, 2012. Persons wishing to submit 

comments or request a public hearing were invited to do so via the NCDAQ website notification. 

No request for public hearing was received. The public comment period elicited a no comment 

letter from the USEPA. No comments were from the general public was received.

Background

The Charlotte area experienced violations of the NAAQS in the late 1970's and was designated 

as nonattainment for CO in 1978. The Charlotte, Raleigh/Durham, and Winston-Salem areas 

were recommended as nonattainment for CO by the Governor in a March 15, 1991 letter to the 

USEPA Region IV Administrator as required by section 107(d)(1)(A) of the 1990 Clean Air Act 

Amendment (CAAA). 

Although the Charlotte area had an attaining design value of 8.4 ppm, based on 1988 and 1989 

data, the 1978 nonattainment designation was reaffirmed by operation of law on the day of 

enactment of the 1990 CAAA. Therefore, the Charlotte area was designated as "not-classified" 

and was given, under the CAAA, 5 years from the date of official designation to attain the 

standard and therefore had an attainment deadline of November 15, 1995.

The Raleigh/Durham and Winston-Salem areas were designated as nonattainment and classified 

as "moderate" under the provisions outlined in Sections 186 and 187 of the CAAA. The design 

values were 10.9 ppm and 9.7 ppm (based on 1988 and 1989 data) for Raleigh/Durham and 

Winston-Salem, respectively. Since the design values were less than 12.7 ppm, both areas were 

designated as "low moderate". With a moderate designation, both areas had until December 31, 

1995 to attain the standard.

In October 1994, the State of North Carolina submitted a redesignation request to the USEPA 

and the area was designated attainment/maintenance for CO in September 1995.

In April 1994, the State of North Carolina submitted a request to the USEPA to redesignate the 

Winston-Salem area to maintenance status based upon three years of clean air quality data. In 

November 1994, this area was redesginated to attainment/maintenance for CO.
Public Notice Report, Comments Received, and Responses 2

Charlotte, Raleigh/Durham & Winston-Salem Appendix C

CO Limited Maintenance Plan August 2, 2012

For the Raleigh/Durham area, the State submitted a request to the USEPA to redesignate this 

area to maintenance in October 1994 and was redesignated to attainment/maintenance for CO in 

September 1995. In October 1995, the State submitted a revision to the motor vehicle emission 

budgets in the maintenance plan.

In March 2005, the State submitted the second maintenance plan to the USEPA for all three 

areas. This plan was approved by the USEPA in March 2006, and a clarification regarding this 

approval was published in June 2007. The June 2007 clarification was with respect to moving 

the oxygenated fuels program to the contingency measures.

North Carolina has chosen to use the limited maintenance plan option for this revision to the 

second maintenance plan.

Summary of Public Notice and Comment Period

The public comment period was open from June 29, 2012 through July 31, 2012. The only 

comment letter received was from the USEPA, which is attached at the end of this Appendix. 

The USEPA offered no comments but included a request that the emissions estimates in the

emissions inventory documentation match the emissions estimates in the narrative. This has 

been addressed in the final submittal.

Conclusions

The NCDAQ believes it has adequately addressed the USEPA’s comments. The NCDAQ will 

be moving forward with the final submittal to the USEPA of the North Carolina limited 

maintenance plan for the Charlotte, Raleigh/Durham, and Winston-Salem carbon monoxide 

maintenance areas.
Public Notice Report, Comments Received, and Responses 

Charlotte, Raleigh/Durham & Winston-Salem CO Limited Maintenance Plan 

 3  Appendix C August 2, 2012

Ms. Sheila C. Holman, Director 

Division of Air Quality 

North Carolina Department of 

Environment and Natural Resources 

1641 Mail Service Center 

Raleigh, North Carolina 27699-1641 

Dear Ms. Holman: 

July 30, 2012 

Thank you for your letter dated June 29,2012, transmitting a prehearing package regarding the Carbon 

Monoxide Limited Maintenance Plan for the Charlotte, Raleigh/Durham, and Winston-Salem 

maintenance areas. These revisions were the subject of a public comment period beginning June 29, 

2012, with written comments due by the close of business on July 31, 2012. We have completed our 

review of the prehearing submittal and offer no comments at this time. We have included some 

considerations in the enclosure. 

We look forward to continuing to work with you and your staff. If you have any questions, please 

contact Ms. Lynorae Benjamin, Chief, Regulatory Development Section at (404) 562-9040, or have your 

staff contact Nacosta C. Ward at (404) 562-9140. 

Air Planning Branch 

Enclosure 

Internet Address (URL) • http://www.epa.gov 

Recycled/Recyclable • Printed Vegetable on Based Inks on Recycled Paper (Minimum 30% Postconsumer) 
Public Notice Report, Comments Received, and Responses 

Charlotte, Raleigh/Durham & Winston-Salem CO Limited Maintenance Plan 

 4  Appendix C August 2, 2012

The summary totals for the point sources for the maintenance counties (i.e., Mecklenburg, Durham, 

Wake and Forsyth) and one county (Mecklenburg) for the area sources are slightly inconsistent between 

Table 3.1-1 ofthe State Implementation Plan Narrative and various tables in Appendix B. Please 

provide an explanation for the variance. 
Public Notice Report, Comments Received, and Responses 

Charlotte, Raleigh/Durham & Winston-Salem CO Limited Maintenance Plan 

 5  Appendix C August 2, 2012

COMMENT 

PROCEDURES: 

REQUESTS FORA 

PUBLIC HEARING: 

INFORMATION: 

Date IR( }to

Plan will be submitted to the United States Environmental Protection Agency to be included in the State Implementation Plan as required by the Clean Air Act. Persons wishing to submit comments or request a public hearing are invited to do so. Any person wishing to comment may submit a written statement for inclusion in the record of proceedings regarding the CO Limited Maintenance Plan. Written comments should be received by no later than July 31, 2012. Requests for a public hearing must be in writing and include a statement supporting the need for such a hearing, an indication of your interest in the subject, and a brief summary of the information intended to be offered at such hearing. A public hearing will be scheduled if requested. A separate notice will be announced for the hearing including the date, time and location. Written requests for a public hearing should be received no later than July 31, 2012 and addressed to Phyllis Jones, Division of Air Quality, 1641 Mail Service Center, Raleigh, Notih Carolina 27699-1641. Copies of the Pre-hearing Draft CO Limited Maintenance Plan may be downloaded from the NCDAQ website at http://www.ncair.org/planning/nc_sip.shtml. Comments can be submitted electronically to: daq.publiccomments@ncdenr.gov (Please type "CO Limited Maintenance Plan" in the subject line) Comments can be mailed or faxed to: Phyllis Jones NC Division of Air Quality 1641 Mail Service Center Raleigh, NC 27699-1641 Fax: (919) 707-8715 The Pre-hearing Draft CO Limited Maintenance Plan may be reviewed in person during normal business hours at the following North Carolina Department of Environment and Natural Resources, Division of Air Quality offices: Raleigh Central Office, Planning Section Mooresville Regional Office Raleigh Regional Office Winston-Salem Regional Office (919)707 -8403 (704) 663-1699 (919) 791-4200 (336) 771-5000