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.govMs. 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-AycockMs. 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 AuthorityBOARD: 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 PM25 

### Implen~entation Rule included a major source threshold, significant emissions rates for direct PM25 

### 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 PMloSurrogate 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 26,2010. 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 AuthorityAttachment 1 Draft State RegisterNotice of Proposed Regulationfor Regulation 6 1 -62, Air Pol lution Contr o l Regulations and Stan dards For pu blication o n November 26, 2 010

Docu m e nt No. __

___ DEPAR T M E NT OF HE ALT H AN D ENVI RON M ENTA L C O NT ROL CHAPTER 6 1 Statutory Authority : S

. C. Code Section 4 8 -1-10 et seq.
Regulation 61-62.5
, Stand ard No. 7, Prevention of Significant Deterioration, and Standard No. 7.1, Nonattai n ment New Source Review (NSR), o f Regulation61-62 , Air Pollutio n Co ntrol Regulations and Standards, and the SIP

Preamble:

On Novem b er 29, 2 005 , th e United Stated Enviro nmental Protection Agenc y (E PA) issued a final rule in the Federal Register entitled Final Ru le To Implement the 8-Hour Ozone National Am bient Air Quality Standard [ 70 FR 7161 2] , also known as the “Phase 2 Ozone Rule,” which finalized reg u lations to implement the 8-hour gro u nd-level ozon e National Am bient Air Quality Standard that the EPA established in Jul y 1 997. Th e Department has implem ented all requi red elements of th is rule but th e EPA has i d entified that the language within a f ootnote to the S outh Carolina Prevention of Significant Deteriorati on (PSD ) regulations listing nitr og en oxides (NO X )

as a precursor to ozone does not mi rror the federal lan guage. As su ch, the EPA has r e quested th at the Department clarify th is issue by ad op ting the feder a l language v e rbatim

. On April 25, 2008, the Departm e nt published a Notice of Draftin g in the State Register to initiate revisions to Regulation 6 1 -62.5
, Stand ard No. 7, Prevention of S i gnificant Deterioration, R. 61- 62.5, Stan dard No. 7.1, N onattainm e nt New Sour ce Review (NSR), and the SIP, in order to

co mp ly with a final ru le entitled Prevention of Significant Deterioration (PSD) and Nonattain m e nt New Source Review ( N SR): Remo val of Vacat ed Elem ents [ 72 FR 32526]
, published i n th e Federal Register on June13, 200 7.

On May 16, 2008, the EP A published a final rule in the Federal Register entitled Implemen tation of the New Source Review (NSR) Progra m for Particulate Matt er Less Than 2.5 Microm eter s (PM 2. 5 ) [ 73 FR 28321]
, also known as the “NSR PM 2. 5 Implementation Rule,” which finalized regulations to implement the NSR prog ram for fine particulate matter (that is, particles with an aerodynami c diam eter less than or equal to a nomin al 2.5 mi cro m eters, generally referred to as “PM 2. 5 ”). The NSR PM 2. 5 Implementation Rule becam e effective July 1 5 , 2 008, and req u ired
states with SIP-approved P S D programs, of whic h So uth Carolina is one, to sub m it revised PSD program s within a 3 y ear transition peri od fol l owing the date of i t s publication
, or b y May 16, 2011 . The NSR PM 2. 5 Implementation Rule i n cluded a m a jo r source thr eshold, signi ficant

e mis sions rat es for direct PM 2. 5 and its presu m e d precurso rs, sulfur dioxide (SO 2 ) and NO X , o ffset ratios for PM 2. 5 , and interpollutant t r ading for offsets and applicability of NSR to PM 2. 5 precursors. T h e NSRPM 2. 5 Impl ementation Rule al so conti nued the EPA’s p o licy of allowing SIP-approved states to use PM 10(that is, particles w ith an aerodyna mi c dia m et er less than or equal to a nominal 10 mi c r ometers) as a surrogate fo r PM 2. 5 in m e eting the NSR requirements of the Clean Air Act until the end of the 3 year transition period (“EPA PM 10 Surrogate Policy ” ).

S.C. DH EC 20 09 NS R Revisions Pre

‐ Hearing Submittal Octo ber 20
, 20 10On Septem b e r 26, 200 8, the Department publish e d a second Notice of Drafting in theState Register for the revisions to R. 61-62.5, StandardNo . 7, Prevention of Significant Deterioration
, R. 61-62 .5, Standard No. 7.1, No nattain m e nt New Source Review (NSR) and the SIP. This second notice incorporated, am ong other things, th e NSR PM 2. 5 Imp l em entation Rule.

On April 24, 2009 , the Departm e nt published a Notice of Final Regulation in th e State Register to

co mp lete the regulation developm ent pr ocess initiated by the aforem entioned Notices, except for the revisions required to incorporate the NSR PM 2. 5 Implementation Rul e . The Departm e nt elected to delay these re visions for the NSR PM 2. 5 Implementation Rul e , pendin g f u rther guidance from the EP A, which the EPAplans to release in su mmer 2010.

The Depart ment proposes to a m end R. 61-62.5, Standard No. 7, Prevention of Significant Deterioration, R. 61-6 2 .5, Standard No. 7.1, Nonattainment New Source Review (NSR) and the SIP to incorporate the pro v isions of the Phase 2 Ozone Rule and the NSR PM 2. 5 Implementation Rule, and to a dd a nonsubstantive clarific ation to corre ct a scrivener ’ s error.
A Notice of Drafting was published in the State Register, on the Bureau of Air Quality Regulation and SIP Mana gem e nt website, and intheDHEC Regulation Development Update on July 23, 2010. No commen t s were re cei ved. Since th i s am end m ent is consistent with federal law, neither a preliminary fiscal i mpact stat e m ent nor a preliminary assess ment report is required.

Discus s ion of Proposed Revisions:

The Summary of Proposed Revisions is submitte d in Attach ment B and is omitted here to conserve spac e in the Board Item

.
Notice of Staff Informational F o rum and Publ ic Comment Period Pursuant to S.C. Cod e Ann. Section 1-23-1 10(A) (3):

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

mem b ers of the public to attend a staff-conducted in formational forum to be held on Decem b er 29, 20 10, at 10:00 a.m

. in the Wallace Room (3141) at the South Carolina Dep artm e nt of Health and Envir o n m ental Control, 26 00 Bul l Street, Colum b ia, SC. The purpose of the forum is to answer que stions, clarify any issues, and receive c o mments from intere sted persons on th e proposed amendments to R. 61-6 2 , Air Polluti onCo ntrol Regulati ons andStan dards, and th e SIP. Please us e the Bull Street entrance.

Interested persons are also provided an opportu nity to submit written comments to Alan Hancock by m a il at the Bureau of Air Quality
, South Caroli na Depart m e nt of Health and Envir o nmental Control, 2600 Bull Street, Colu m b ia, S C 29201; by facsi mile at ( 803) 898-4117; or by e- m a il at hancocam @d hec.sc.gov . To be considered, comments mu st be r ecei ved no later than 5:00 p.m

. on December 29 , 2010, the close of the comment pe rio d . Comments received at th e forum or during the write-in public comment period by the deadlin e requested ab ove shall be submitted to the Board in a Summary of Public Comme nts and Depart m e nt Re sponses for cons ideration at the public hearing as noticed below.

Copies of theprop osed reg u lation for pu blic notice an d comment may be o b tai n ed b y conta c ting Alan Hancock at the South Carolina Departm e nt of Health and Environm ental Control, Bureau of Air Quality
, 2600 Bull St reet, Colum b ia, SC 292 01; by calling ( 803) 898- 4139; or by em ailing hancocam @d hec.sc.gov . A copy m a y also be obtained onthe Department’s Regulatory Inform ation I n ternet Site at http://www.scdhec.gov/admi nistration/ regs/ in its DHEC Regulation

S.C. DH EC 20 09 NS R Revisions Pre

‐ Hearing Submittal Octo ber 20
, 20 10Develop m entUpdate. To acces s this document, clic k on the Air category
, then s can down for this proposed am endm ent.

Notice of Pu blic Hearing and Opportunity for Public Comment Pursuant to S.C. Code Ann. Sections 1-23-110(A)(3) and 1-2 3 -11 1 :

Interested me m b ers of th e public and regulat ed community ar e invited to co mment on the proposed amendments to R. 61-62, Air Pollutio n Co ntrol Regulati ons and Stan dards, and th e SIP at a public he aring to be co nducted b y th e Board of th e South Carol i na Department of Health and Environm ental Control at its regularly-sche duled meeting on February 10, 2011. T h e public hearing is to be held in room 3420 (Board Room) of the Commissioner’s Suite, third floor, Ay cock Buil ding of the S outh Carolina Departmentof Health and Envir onm ental Control, 2600 Bull Street, C o lum b ia, SC. The Board meeting co mmences at 10:00 a. m

. at which ti m e the B o ard will consider item s 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 Departm e nt twenty -four hours in advance of the m eeti ng at the following address: http://www.scdhec.gov/administration/board-agenda.htm . Perso n s desiring to m ake oral

co mments at the hearing are asked to limit their st ate m ents to five mi nutes or less, and as a courtesy are asked to provide written copies of the i r presentation to the Clerk of the Board for inclusion for the record.

Statem ent of Need and Reasonableness: This state m e n t of need and reasonableness wa s de ter mined by staff analy s is pursuant to S.C. Code Section 1-23-115(C)( 1 )-(3) and (9) -(11).

DESCRIPTION OF REGULATION: Purpose: The Depart men t proposes to a m e nd R. 61-62.5, Standard No. 7, Prevention of Significant D e terioration ; R. 61-6 2 .5, Standard No. 7.1, Nonattainment New Source Revi e w (NSR) ; and the SIP to incorporate the provisions of the Phase 2 Ozone Rule and the NSR PM 2. 5 Implementation Rule, and to add a n ons ubstantive clarification to correct a scriv ener’ s error.
Legal Aut h ority : The legal authority for R. 61-62, Air Poll uti on Co ntrol Regulatio ns and Stand ards, is S.C. Code Section 48- 1-10et seq.
Plan for Impl ementation: The proposed am end m ents will take effect upon appr oval by the Board of Health and Envir onm ental Controland p ublication i n the State Register . The proposed

am end m ents will be i mpl em ented by providi ng the regulated community with copies of the regulation, an d sending an em ail to stakeholders.

DETERMINATION OF NEED AND RE AS ONABLE NE SS OF T H E PROP OSED REGULATI ON BASE D ON ALL FA CTORS HER E IN AND E X PECTED B E NEFITS:

The EPA regularl y promulgates amen dments to fe deral regulations to include clarification
, guidance, technical am end m ents, and strengthen air quality pro v i s ions. States are mandated b y law to adopt these federal am end m ent s . These amendments are reasonable as they prom ot e consistency and ensure con f ormity of st ate regulations to federal requirem e nts.

DETERMINATION OF COSTS AND BENEFITS:

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

a m end m ents. The standards to be adopted are alre ady effective and applicable to the regulated

S.C. DH EC 20 09 NS R Revisions Pre

‐ Hearing Submittal Octo ber 20
, 20 10co mmunity as a matter o f federal law. The propos ed am end m ents will benefit the regulated

co mmunity by clarify i ng the regulations and increasi ng their ease of use.

UNCERT A INTIES OF ESTIMATES:

There are n o uncertainties of esti m ates relative to the costs to the state or its political subdivisio n s.

EFFECT ON ENVIRONM ENT AND P U BLIC HE ALTH:

Adoption of th e recent changes in federal regul ations through the proposed amendments to R. 61- 62, Air Poll ution Co ntro l Regulatio n s and St an d a rds , and the SIP will provide continued protection of the environm ent and pu bli c health.

DETRIMENTAL EFFECT ON THE ENVIRONM ENT AND PUBL IC HEALTH IF THE REGULATIONS ARE NOT IMPLEMENTED:

The state’ s au thority to imple m ent feder a l require me nts, which are beneficial to the public health and environ m ent, would be co mp romised if th ese amend m ents were not adopted in South Carolina.

Text of Pro p osed Am endm ents to Regulation 61-62. 5, St a ndard No. 7, Preventio n of Significant Dete rioration, and Standard 7. 1, Nonattainment New Source Review (NS R ) for Public Comment:

The Text of the Proposed A m end m ents is omitt ed here to conserve space.

S.C. DH EC 20 09 NS R Revisions Pre

‐ Hearing Submittal Octo ber 20
, 20 10