BOARD: 

Paul C. Aughtry, 111 $ 

Chairman ' 

Edwin H. Cooper, 111 

Vice Chairman 

Steven G. Kisner 

Secretary 

DHEC BOARD: 

M.MU Henry C. Scott 

M. David Mitchell, MD 

PROMOTEPROTECTPROSPER Glenn A. McCaU 

f '--'""' r- -?! kd#lrHanter, Commissioner . Coleman F. Buckhouse, MD 

Promotzng andprotectzng the health of the pubhc and the environment 

2p3 I -. - ; .: 33 

December 2,20 10 

Ms. Gwendolyn Keyes Fleming 

Regional Administrator 

United States Environmental Protection Agency, Region 4 

Sam Nunn Federal Center 

h! Forsyth Strset, SW 

Atlanta, Georgia 30303-8960 

Re: Proposed Revisions to the South Carolina Air Quality Implententation Plan - Prevention of 

Significant Deterioration and Nonattainment New Source Review 

Dear Ms. Fleming: 

The South Carolina Department of Health and Environmental Control ("Department") is requesting 

parallel processing for proposed revisions to the Prevention of Significant Deterioration ("PSD") and 

Nonattainment New Source Review ("NSR") provisions of the South Carolina Air Quality Implenzentation 

Plan ("SIP"). Under the parallel processing procedure, the U.S. Environmental Protection Agency 

("EPA") Regional office works closely with the state during the development of new or revised regulations 

and solicits public comment in approximately the same time fiame that the state notices its proposed 

revisions and holds its public hearing. As such, the Department is requesting comments from the EPA on 

this proposal during our public comment period, which ends December 29,20 10. 

Background 

On November 29, 2005, the EPA issued a final rule in the Federal Register entitled Final Rule To 

Implement the 8-Hour Ozone National Ambient Air Quality Standard (70 FR 7 16 12), also known as the 

"Phase 2 Ozone Rule," which finalized regulations to implement the 8-hour ground-level ozone National 

Ambient Air Quality Standard that the EPA established in July 1997. The Department has implemented all 

required elements of this rule but will clarify a footnote to the PSD regulations to list nitrogen oxide (NOx) 

as a precursor to ozone. 

On April 25, 2008, the Department published a Notice of Drafting in the South Carolinu State Register to 

initiate revisions to Regulation 6 1-62.5, Standard No. 7, Prevention of Significant Deterioration, 

Regulation 6 1-62.5, Standard No. 7.1, Nonattainnzent New Source Review (NSR) and the SIP, in order to 

comply with a final rule entitled Prevention of Significant Deterioration (PSD) and Nonattainment New 

Source Review (NSR): Removal of Vacated Elements (72 FR 32526), published in the Federal Register on 

June 13. 2007. 

SOU'I'H CAROLINA DEPAK'I'MENT OF HEALI'H AND ENVIRONMENTAL CONTROL 

2600 Bull Strcct Cohurrbia, SC '29201 Plronc: (803) 898-3432 www.scdhec.gov 
Ms. Fleming 

December 2,2010 

Page 2 

On May 16, 2008, the EPA published a final rule in the Federal Register entitled Implementation of the 

New Source Review (MRj Program.for Particulate Matter Less Than 2.5 Micrometers (PM2,,) (73 FR 

2832 l), also known as the "NSR PM2 5 Implementation Rule," which finalized regulations to implement 

the NSR program for fine particulate matter (that is, particles with an aerodynamic diameter less than or 

equal to a nominal 2.5 micrometers, generally referred to as ''PMZ,5"). The NSR PM2.5 Implementation 

Rule became effective July 15, 2008, and required states with SIP-approved PSD programs, of which 

South Carolina is one, to submit revised PSD programs within a 3 year transition period following the date 

of its publication (May 16, 201 1). The NSR PM2.5 Implementation Rule included a major source threshold, 

sibmificant emissions rates for direct PM2.5 and its presumed precursors, sulfur dioxide (SOz) and NOx; 

offset ratios for PM2.5; and interpollutant trading for offsets and applicability of NSR to PM2.j precursors. 

The NSR PM2.j Implementation Rule also continued the EPA's policy of allowing SIP-approved states to 

use PMlo (that is, particles with an aerodynamic diameter less than or equal to a nominal 10 micrometers) 

as a surrogate for PM2.5 in meeting the NSR requirements of the Clean Air Act, until the end of the 3 year 

transition period ("EPA PMlo Surrogate Policy"). 

On September 26, 2008, the Department published a second Notice of Drafting in the South Carolina 

State Register for the revisions to Regulation 61-62.5, Standard No. 7, Prevention of Sigmficant 

Deterioration, Regulation 6 1-62.5, Standard No. 7.1, Nonattainmerzt Nelt' Source Review (NSR) and the 

SIP. This second notice incorporated, among other things, the NSR PMzj Implementation Rule. 

On April 24, 2009, the Department published a Notice of Final Regulation in the South Carolina State 

Register to complete the regulation development process initiated by the aforementioned Notices, except 

for the revisions required to incorporate the NSR PM2 Implementation Rule. The Department elected to 

delay these revisions for the NSR PM2.5 Implementation Rule, pending further guidance from the EPA, 

which the EPA released in part on September 29, 20 10. 

Current Revisions 

On July 23, 2010, the Department published a Notice of Drafting in the South Carolina State Register to 

incorporate the NSR PM,,, Implementation Rule and the clarification from the Phase 2 Ozone Rule. On 

August 16, 2010, EPA Region 4 advised the Department not to include the interpollutant trading ratio 

amendments in the NSR PM2 Implementation Rule in this SIP revision, pending the resolution of 

litigation over the ratios with a proposed rule in 20 1 1. The Department has not included interpollutant 

trading ratios in this SIP amendment. 

On October 1,2010, per a request from the EPA, the Department submitted its initial prehearing SIP 

package to the EPA for review and comment. On October 8, 20 10, the Department received 

recommendations from the EPA based on the October 1,2010, submittal and has addressed these 

recommendations. 

On November 26,2010, the Department published a public notice seelung comment on the current 

revisions to the SIP in the South Carolina State Register. To be considered, the Department must receive 

comments by December 29,2010, the close of the comment period. The Department will hold a public 

hearing on this issue on December 29,2010, at 10:OO a.m. in the Wallace Room of the Sims-Aycock 
Ms. Fleming 

December 2,2010 

Page 3 

Building, 2600 Bull Street, Columbia, South Carolina. The Department requests that the EPA provide any 

additional comments on the revisions within that same timeframe. 

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 contact 

Alan Hancock of the Bureau of Air Quality by email at hancocam@dhec.sc.gov or by telephone at 

(803) 898-4139. 

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

Deputy Commissioner 

Environmental Quality Control 

South Carolina Department of Health and Environmental Control 

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

Royce Dansby-Sparks, Regulatory Development Section, EPA Region 4 

Twunjala Bradley, Regulatory Development Section, EPA Region 4 

Joel Huey, Regulatory Development Section, EPA Region 4 

Myra Reece, Bureau Chief, BAQ, S.C. DHEC 

Renee Shealy, Assistant Bureau Chief, RAQ, S.C. DHEC 

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

S.C. DHEC 

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

S.C. DHEC 

Electronic enclosure: 

1. Notice of Proposed Regulation - South Cuvolinu State Register, published November 26, 

2010 

2. Text of Proposed Regulation - with highlighted and strikeout text 

3. Text of Proposed Regulation - clean copy 

4. Copy of Legal Authority 
BOARD: 

I'aul C. Aughtry, 111 

Chairman 

BOARD: 

Henry C. Scott 

M. David Mitchell, MD 

Glenn A. McCall 

Edwin H. Cooper, 111 

Vice Chairman 

Srevm G. Kisner 

Secrerary Coleman F. Buckhouse, MD 

October 20, 2010 

Mr. Richard A. Schutt, Chief, Air Planning Branch 

U.S. EPA Region 4 

Sam Nunn Atlanta Federal Center 

6 1 Forsyth Street SW 

Atlanta, GA 30303-8909 

Re: Proposed Revisions to the South Carolina Air Quality Implementation Plan - 

Prevention of Significant Deterioration and Nonattainment New Source Review 

Dear Mr. Schutt: 

On November 29,2005, the EPA issued a final rule in the Federal Register entitled Final Rule 

To Implement the 8-Hour Ozone Notional Ambievlt Air Quuiity Standard 170 FR 7 16 121, also 

known as the "Phase 2 Ozone Rule," which finalized regulations to implement the 8-hour 

ground-level ozone National Ambient Air Quality Standard that the EPA established in July 

1997. The Department has implemented all required elements of this rule but will clarify a 

footnote to the Prevention of Significant Deterioration ("PSD") regulations to list nitrogen oxide 

(NOx) as a precursor to ozone. 

On April 25,2008, the Department published a Notice of Drafting in the South Carolina State 

Register to initiate revisions to Regulation 6 1-62.5, Standard No. 7, Prevention of Significant 

Deterioration, R. 61-62.5, Standard No. 7.1, Nonattainment New Source Review (NSI) and the 

SIP, in order to comply with a final rule entitled Prevention of SignzJicant Deterioration (PSD) 

and Nonattainment New Soul-ce Review (NSR): Removal of Vacated Elements [72 FR 325261, 

published in the Federal Register on June 13,2007. 

On May 16,2008, the EPA published a final mle in the Federal Register entitled Implementation 

of the New Source Review (NSR) Program for Particulale Matter Less Than 2.5 A4icrometers 

(PM2 s) [73 FR 283211, also known as the "NSR PM2 5 Implementation Rule," which finalized 

regulations to implement the New Source Review ("NSR) program for fine particulate matter 

(that is, particles with an aerodynamic diameter less than or equal to a nominal 2.5 micrometers, 

generally referred to as "PM2 5"). The NSR PM2 5 Implementatiori Rule became effective July 15, 

2008, and required states with SIP-approved PSD programs, of which South Carolina is one, to 

submit revised PSD programs within a 3 year transition period following the date of its 

publication, or by May 16,201 1. The NSK PM2 5 Implen~entation Rule included a major source 

threshold, significant emissions rates for direct PM2 5 and its presumed precursors, sulfur dioxide 

SOUTH 64KOI.INA DEPARTMENT OF HE.4I.TH AND FAN\ IRONMFY I' 11. - ( ONFrI<OI - - 

2600 Bull Street Columbia, SC 29201 Phone: (803) 898-3432 www.scdhec.go\ 
Mr. Schutt 

October 20,2010 

Page 2 

(SO2) and NOx; offset ratios for PM2 5; and interpollutant trading for offsets and applicability of 

NSR to PM2 5 precursors. The NSR PM2 5 Implementation Rule also continued the EPA's policy 

of allowing SIP-approved states to use PMlo (that is, particles with an aerodynamic diameter less 

than or equal to a nominal 10 micrometers) as a surrogate for PM2 5 in meeting the NSR 

requirements of the Clean Air Act, until the end of the 3 year transition period ("EPA PMlo 

Surrogate Policy"). 

On September 26,2008, the Department published a second Notice of Drafting in the South 

Carolina State Register for the revisions to Regulation 61-62.5, Standard No. 7, Prevention of 

Signzjicant Deterioration, R. 6 1-62.5, Standard No. 7.1, Nonattainment New Source Review 

WSR) and the SIP. This second notice incorporated, among other things, the NSR PM2.5 

Implementation Rule. 

On April 24,2009, the Department published a Notice of Final Regulation in the South Carolina 

Stute Register to complete the regulation development process initiated by the aforementioned 

Notices, except for the revisions required to incorporate the NSR PM2.5 Implementation Rule. 

The Department elected to delay these revisions for the NSR PM2.5 Implementation Rule, 

pending further guidance from the EPA, which the EPA released in part on September 29, 201 0. 

On February 1 1,20 10, the EPA published a proposed rule in the Federal Regis~er entitled 

Jmplementation of the New Source Review (NSR) Program for Particulate Matter Less Than 2.5 

Micrometers (PM2 s); Notice of Proposed Rulemaking To Repeal Grandfathering Provision and 

End the PMIo Surrogate Policy [75 FR 68271. In this action, the EPA proposed to end the EPA 

PMlo Surrogate Policy in SIP-approved states before the end of the 3 year transition period. The 

EPA also sought comment on whether the technical issues that led to the EPA PMlo Surrogate 

Policy have been resolved, and on the transition process, should the EPA decide to end the EPA 

PMlo Surrogate Policy. The Department will continue to rely upon the EPA PMlo Surrogate 

Policy in issuing PSD permits until the EPA finalizes all of the necessary tools and guidance. 

On August 16,201 0, Joel Heuy of EPA Region 4 advised the Department not to include the 

interpollutant trading ratio amendments in the NSR PM2.5 Implementation Rule in this SIP 

revision, pending the resolution of litigation over the ratios with a proposed rule in 201 1. The 

Department has not included interpollutant trading ratios in this SIP amendment. 

On October 1,201 0, per a request from the EPA, the Department submitted its proposed 

revisions for parallel processing. Under this procedure, the Regional office works closely with 

the state during the development of new or revised regulations and solicits public comment in 

approximately the same time frame that the state notices its proposed revisions and holds its 

public hearing. On October 8, 2010, the Department received recommendations from the EPA 

based on the October 1,201 0, submittal. We have addressed those recommendations in this 

submittal. 
Mr. Schutt 

October 20, 20 10 

Page 3 

The Department will publish a public notice seeking comment on the aforementioned revision to 

the SIP in the South Carolina State Register on November 26,201 0. To be considered, the 

Department must receive comments by December 29,201 0, the close of the comment period. 

The Department will hold a public hearing on this issue on December 29,2010, at 10:OO am in 

the Wallace Room of the Sims-Aycock Building, 2600 Bull Street, Columbia, South Carolina. 

The Department requests that the EPA provide its comments on the revisions within that same 

timeframe. Enclosed with this letter is a copy of the proposed SIP revisions. 

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 contact Alan Hancock of the Bureau of Air Quality by email at 

hancocam@dhec.sc.gov or by telephone at (803) 898-4139. 

Sincerely, 

Robert J. Brown, Jr., Birector 

Division of Air Assessment, Innovations, and Regulation 

Bureau of Air Quality 

South Carolina Department of Heath and Environmental Control 

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

Royce Dansby-Sparks, Regulatory Development Section, EPA Region 4 

Twunjala Bradley, Regulatory Development Section, EPA Region 4 

Joel Huey, Regulatory Development Section, EPA Region 4 

cc (letter only): Maeve S. R. Mason, Regulation & SIP Management Section, BAQ, S.C. DHEC 

Renee Shealy, Assistant Bureau Chief, BAQ, S.C. DHEC 

Myra Reece, Bureau Chief, BAQ, S.C. DHEC 

CD enclosure (3 copies): 

1. Notice of Proposed Regulation - South Carolina State Register, to be published 

November 26,2010 

2. Text of Proposed Regulation - with highlighted and strikeout text 

3. Text of Proposed Regulation - clean copy 

4. Copy of Legal Authority 
Attachment 1 

Draft State Register Notice of Proposed Regulation for 

Regulation 61-62, Air Pollution Control Regulations and Standards 

For publication on November 26, 2010 

Document No. _____ 

DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL 

CHAPTER 61

Statutory Authority: S.C. Code Section 48-1-10 et seq. 

Regulation 61-62.5, Standard No. 7, Prevention of Significant Deterioration, and Standard No. 

7.1, Nonattainment New Source Review (NSR), of Regulation 61-62, Air Pollution Control 

Regulations and Standards, and the SIP

Preamble: 

On November 29, 2005, the United Stated Environmental Protection Agency (EPA) issued a final 

rule in the Federal Register entitled Final Rule To Implement the 8-Hour Ozone National

Ambient Air Quality Standard [70 FR 71612], also known as the “Phase 2 Ozone Rule,” which 

finalized regulations to implement the 8-hour ground-level ozone National Ambient Air Quality

Standard that the EPA established in July 1997. The Department has implemented all required

elements of this rule but the EPA has identified that the language within a footnote to the South 

Carolina Prevention of Significant Deterioration (PSD) regulations listing nitrogen oxides (NOX) 

as a precursor to ozone does not mirror the federal language. As such, the EPA has requested that

the Department clarify this issue by adopting the federal language verbatim. 

 

On April 25, 2008, the Department published a Notice of Drafting in the State Register to initiate 

revisions to Regulation 61-62.5, Standard No. 7, Prevention of Significant Deterioration, R. 61-

62.5, Standard No. 7.1, Nonattainment New Source Review (NSR), and the SIP, in order to

comply with a final rule entitled Prevention of Significant Deterioration (PSD) and 

Nonattainment New Source Review (NSR): Removal of Vacated Elements [72 FR 32526],

published in the Federal Register on June 13, 2007. 

On May 16, 2008, the EPA published a final rule in the Federal Register entitled Implementation 

of the New Source Review (NSR) Program for Particulate Matter Less Than 2.5 Micrometers

(PM2.5) [73 FR 28321], also known as the “NSR PM2.5 Implementation Rule,” which finalized

regulations to implement the NSR program for fine particulate matter (that is, particles with an 

aerodynamic diameter less than or equal to a nominal 2.5 micrometers, generally referred to as 

“PM2.5”). The NSR PM2.5 Implementation Rule became effective July 15, 2008, and required

states with SIP-approved PSD programs, of which South Carolina is one, to submit revised PSD 

programs within a 3 year transition period following the date of its publication, or by May 16, 

2011. The NSR PM2.5 Implementation Rule included a major source threshold, significant 

emissions rates for direct PM2.5 and its presumed precursors, sulfur dioxide (SO2) and NOX, offset 

ratios for PM2.5, and interpollutant trading for offsets and applicability of NSR to PM2.5

precursors. The NSR PM2.5 Implementation Rule also continued the EPA’s policy of allowing 

SIP-approved states to use PM10 (that is, particles with an aerodynamic diameter less than or 

equal to a nominal 10 micrometers) as a surrogate for PM2.5 in meeting the NSR requirements of 

the Clean Air Act until the end of the 3 year transition period (“EPA PM10 Surrogate Policy”). 

S.C. DHEC 2009 NSR Revisions Pre‐Hearing Submittal  

October 20, 2010
On September 26, 2008, the Department published a second Notice of Drafting in the State 

Register for the revisions to R. 61-62.5, Standard No. 7, Prevention of Significant Deterioration,

R. 61-62.5, Standard No. 7.1, Nonattainment New Source Review (NSR) and the SIP. This 

second notice incorporated, among other things, the NSR PM2.5 Implementation Rule. 

On April 24, 2009, the Department published a Notice of Final Regulation in the State Register to 

complete the regulation development process initiated by the aforementioned Notices, except for 

the revisions required to incorporate the NSR PM2.5 Implementation Rule. The Department 

elected to delay these revisions for the NSR PM2.5 Implementation Rule, pending further 

guidance from the EPA, which the EPA plans to release in summer 2010. 

The Department proposes to amend R. 61-62.5, Standard No. 7, Prevention of Significant

Deterioration, R. 61-62.5, Standard No. 7.1, Nonattainment New Source Review (NSR) and the 

SIP to incorporate the provisions of the Phase 2 Ozone Rule and the NSR PM2.5 Implementation 

Rule, and to add a nonsubstantive clarification to correct a scrivener’s error. 

A Notice of Drafting was published in the State Register, on the Bureau of Air Quality

Regulation and SIP Management website, and in the DHEC Regulation Development Update on 

July 23, 2010. No comments were received. Since this amendment is consistent with federal law, 

neither a preliminary fiscal impact statement nor a preliminary assessment report is required. 

Discussion of Proposed Revisions: 

The Summary of Proposed Revisions is submitted in Attachment B and is omitted here to 

conserve space in the Board Item. 

Notice of Staff Informational Forum and Public Comment Period Pursuant to S.C. Code

Ann. Section 1-23-110(A)(3):

Staff of the South Carolina Department of Health and Environmental Control invites interested

members of the public to attend a staff-conducted informational forum to be held on December 

29, 2010, at 10:00 a.m. in the Wallace Room (3141) at the South Carolina Department of Health

and Environmental Control, 2600 Bull Street, Columbia, SC. The purpose of the forum is to 

answer questions, clarify any issues, and receive comments from interested persons on the

proposed amendments to R. 61-62, Air Pollution Control Regulations and Standards, and the SIP.

Please use the Bull Street entrance. 

Interested persons are also provided an opportunity to submit written comments to Alan Hancock 

by mail at the Bureau of Air Quality, South Carolina Department of Health and Environmental

Control, 2600 Bull Street, Columbia, SC 29201; by facsimile at (803) 898-4117; or by e-mail at

hancocam@dhec.sc.gov. To be considered, comments must be received no later than 5:00 p.m. on

December 29, 2010, the close of the comment period. Comments received at the forum or during 

the write-in public comment period by the deadline requested above shall be submitted to the 

Board in a Summary of Public Comments and Department Responses for consideration at the 

public hearing as noticed below. 

Copies of the proposed regulation for public notice and comment may be obtained by contacting

Alan Hancock at the South Carolina Department of Health and Environmental Control, Bureau of

Air Quality, 2600 Bull Street, Columbia, SC 29201; by calling (803) 898-4139; or by emailing 

hancocam@dhec.sc.gov. A copy may also be obtained on the Department’s Regulatory 

Information Internet Site at http://www.scdhec.gov/administration/regs/ in its DHEC Regulation

S.C. DHEC 2009 NSR Revisions Pre‐Hearing Submittal  

October 20, 2010
Development Update. To access this document, click on the Air category, then scan down for this

proposed amendment. 

Notice of Public Hearing and Opportunity for Public Comment Pursuant to S.C. Code Ann.

Sections 1-23-110(A)(3) and 1-23-111:

Interested members of the public and regulated community are invited to comment on the 

proposed amendments to R. 61-62, Air Pollution Control Regulations and Standards, and the SIP 

at a public hearing to be conducted by the Board of the South Carolina Department of Health and

Environmental Control at its regularly-scheduled meeting on February 10, 2011. The public

hearing is to be held in room 3420 (Board Room) of the Commissioner’s Suite, third floor, 

Aycock Building of the South Carolina Department of Health and Environmental Control, 2600

Bull Street, Columbia, SC. The Board meeting commences at 10:00 a.m. at which time the Board

will consider items on its agenda in the order presented. The order of presentation for public 

hearings will be noted in the Board’s agenda to be published by the Department twenty-four 

hours in advance of the meeting at the following address:

http://www.scdhec.gov/administration/board-agenda.htm. Persons desiring to make oral 

comments at the hearing are asked to limit their statements to five minutes or less, and as a

courtesy are asked to provide written copies of their presentation to the Clerk of the Board for 

inclusion for the record. 

Statement of Need and Reasonableness:

This statement of need and reasonableness was determined by staff analysis pursuant to S.C.

Code Section 1-23-115(C)(1)-(3) and (9)-(11). 

DESCRIPTION OF REGULATION: 

Purpose: The Department proposes to amend R. 61-62.5, Standard No. 7, Prevention of 

Significant Deterioration; R. 61-62.5, Standard No. 7.1, Nonattainment New Source Review

(NSR); and the SIP to incorporate the provisions of the Phase 2 Ozone Rule and the NSR PM2.5

Implementation Rule, and to add a nonsubstantive clarification to correct a scrivener’s error. 

Legal Authority: The legal authority for R. 61-62, Air Pollution Control Regulations and

Standards, is S.C. Code Section 48-1-10 et seq.

Plan for Implementation: The proposed amendments will take effect upon approval by the Board 

of Health and Environmental Control and publication in the State Register. The proposed 

amendments will be implemented by providing the regulated community with copies of the 

regulation, and sending an email to stakeholders. 

DETERMINATION OF NEED AND REASONABLENESS OF THE PROPOSED 

REGULATION BASED ON ALL FACTORS HEREIN AND EXPECTED BENEFITS: 

The EPA regularly promulgates amendments to federal regulations to include clarification,

guidance, technical amendments, and strengthen air quality provisions. States are mandated by

law to adopt these federal amendments. These amendments are reasonable as they promote 

consistency and ensure conformity of state regulations to federal requirements. 

DETERMINATION OF COSTS AND BENEFITS: 

There will be no increased cost to the state or its political subdivisions as a result of these 

amendments. The standards to be adopted are already effective and applicable to the regulated 

S.C. DHEC 2009 NSR Revisions Pre‐Hearing Submittal  

October 20, 2010
community as a matter of federal law. The proposed amendments will benefit the regulated 

community by clarifying the regulations and increasing their ease of use. 

UNCERTAINTIES OF ESTIMATES: 

There are no uncertainties of estimates relative to the costs to the state or its political

subdivisions. 

EFFECT ON ENVIRONMENT AND PUBLIC HEALTH: 

Adoption of the recent changes in federal regulations through the proposed amendments to R. 61-

62, Air Pollution Control Regulations and Standards, and the SIP will provide continued 

protection of the environment and public health. 

DETRIMENTAL EFFECT ON THE ENVIRONMENT AND PUBLIC HEALTH IF THE

REGULATIONS ARE NOT IMPLEMENTED: 

The state’s authority to implement federal requirements, which are beneficial to the public health 

and environment, would be compromised if these amendments were not adopted in South

Carolina. 

Text of Proposed Amendments to Regulation 61-62.5, Standard No. 7, Prevention of 

Significant Deterioration, and Standard 7.1, Nonattainment New Source Review (NSR) for 

Public Comment:

The Text of the Proposed Amendments is omitted here to conserve space. 

S.C. DHEC 2009 NSR Revisions Pre‐Hearing Submittal  

October 20, 2010