BOARD: BOARD: 

Allen Amsler 

Chairman 

R Kenyon Wells 

MarkS. Lutt 

Vice Chairman 

Catherine B. Templeton, Director 

Promoting and prof!!cting the health of the public and the environment 

May 01,2012 

Ms. Gwendolyn Keyes Fleming 

Regional Administrator 

United States Environmental Protection Agency, Region 4 

Sam Nunn Federal Center 

61 Forsyth Street, SW 

Atlanta, Georgia 30303-8960 

L. Clarence Batts, Jr. 

Ann B. Kirol, DDS 

John 0. Hutto, Sr., MD 

Re: Revision to South Carolina Air Quality Implementation Plan- 2010 End of Year Revisions 

Dear Ms. Fleming: 

The South Carolina Department of Health and Environmental Control (Department) requests that the U.S. 

Environmental Protection Agency (EPA) grant final approval to this revision of the South Carolina Air 

Quality Implementation Plan (SIP). 

The EPA promulgates amendments to federal regulations throughout each calendar year. In order to 

maintain consistency with the appropriate federal revisions, the Department annually incorporates relevant federal rules from the previous year. One of the amendments based on 2010 federal rules that the 

Department is incorporating into state Prevention of Significant Deterioration (PSD) regulations, an incorporation of maximum allowable increases in ambient particulate matter 2.5 micrometers in diameter 

and smaller (PM2.s) pollutant concentrations (known as "increments"), promulgated by the EPA on October 20, 2010 (75 FR 64864), is included in this SIP revision request. 

The Department is also reformatting its Ambient Air Quality Standards table and deleting an annual standard for particulate matter 10 micrometers in diameter and smaller (PM10) that the EPA revoked on October 17, 2006 (71 FR 61144), in order to make our table and standards more consistent with the EPA's 

National Ambient Air Quality Standards table. These revisions are also part of this submittal. 

The enclosed SIP revision is the Department's aforementioned amendments to S.C. Regulation 61-62.5, 

Standards 2 and 7. (The remaining changes in this state action are to regulations that are not part of the 

SIP, such as S.C. Regulation 61-62.63, National Emissions Standards for Hazardous Air Pollutants.) 

The Department published a public notice seeking comment on the aforementioned revision to the SIP in 

the South Carolina State Register on January 27, 2012. The Department held a staff-led informational 

forum (SIF) on February 27,2012. A representative from the Horry Environmental Action Team (HEAT) 

attended the forum and made comment expressing community concern. A transcript of the SIF is included 

in Appendix A. The Department also received one written comment from HEAT on February 27,2012, 

SOCTH CAROLI:'\iA DEPARTMENT OF HEALTH AND E;\IVIRONMENTAL CONTROL --~----~--.-~------ ---- ·-·--------

2600 Bull Street • Columbia, SC 29201 • Phone: (803) 898-3432 • www .scdhec.gov 
Ms. Fleming 

May 01, 2012 

Page 2 of2 

which is not germane to this action. A copy of this written comment and the Department's response is 

submitted as Attachment B. 

The Department held a public hearing for this revision before the Board of Health and Environmental 

Control on April 12, 2012, at which the Department received no comments. A transcript of this hearing is 

included as Appendix C. The Department will publish a final notice to revise the aforementioned portion 

of the SIP in the South Carolina State Register on April 27, 2012, at which time it will become state effective. I certify that the digital copies of this letter and the attached documents on the enclosed CD are an 

exact duplicate of the paper copies. 

The Department appreciates the assistance provided by you and your staff regarding the formulation of 

this plan. Should you or your staff have any questions or comments concerning this SIP revision, please 

:::t=~allori McAI~lister of the Bureau of Air Quality at (803) 898-0167 or mcallimk@dhec.sc.gov. 

. I 

I I- ------------..7 ,~~ 

Robert W. King, Jr., P.E. 

Deputy Commissioner 

Environmental Quality Control 

ec: Scott R. Davis, Chief, Air Planning Branch, EPA Region 4 

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

Richard Wong, Regulatory Development Section, EPA Region 4 

Myra Reece, Chief, BAQ, SCDHEC 

Robert Brown, Director, Division of Air Assessment, Innovations, and Regulation, BAQ, 

SCDHEC 

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

SCDHEC 

Appendices and CD enclosure: 

1. Text of Final Regulation (strikeout and clean copy) 

2. Appendix A: Notices of Drafting, Notice of Proposed Regulation, Staff-Led 

Informational Forum Sign-in Sheet and Transcript 

3. Appendix B: Written Comment and Department Response 

4. Appendix C: Board Public Hearing Transcript and Notice of Final Regulation 

5. Appendix D: Copy of Legal Authority