BOARD: Allen Amsler Chairman MarkS

. Lmz Vice Chairman Steven G. Kisner Secretary C. Earl Hunter. Commissioner Promoting and protecting the health of thepublic and the environment July 18 , 2011 Gwendolyn Keyes Fleming, Esq. Regional Administrator US EPA Region 4 Atlanta Federal Center 61 Forsyth Street, S.W. Atlanta, GA 30303-8909 BOARD: R. Kenyon Wells L Clarence Barrs, Jr. Ann B. Kirol , DDS John 0. Hurro, Sr., MD

Re: Final Amendments to the South CarolinaAir Quality Implementation Plan (SIP): Regulation Clean

-Up
Dear Ms. Keyes Fleming:
The Department of Health and Environmental Control (Department) is pleased to provide amendments to the South Carolina SIP for fmal approval. The Department has conducted a review of current air quality regulations to ensure that we are efficiently and effectively meeting our goals of promoting and protecting the public health and the environment. An internal Regulation Clean-Up Workgroup was created to formulate ways to evaluate air quality regulations to provide clarification, delete or update obsolete requirements , and correct typographical errors where necessary.
The Department has also held external stakeholder meetings to take recommendations and comments on those regulatory amendments identified by the Regulation Clean-Up Workgroup. Through these stakeholder meetings , the Department developed amendments to S. C. Regulation 61-62 and Regulation 61-86.1 by consensus. Underline/strikeout and clean copies of these regulations are included as Attachment 1. Comments received as a result of stakeholder meetings and EPA consultation, along with Department responses , are included as Attachment 2

. The Department has amended R. 61-62 and the SIP

. In particular, the Department has amended R. 61-62.1 , De finitions and General Requirements, to update and correct definitions and perm i t requirements ; R. 61-62.5 , Standard 1, Emissions From Fuel Burning Operations, to exclude the requirement for natural gas fired units to maintain a log of periods of startup and shutdown ; R. 61-62

.5, Standard 2, AmbientAir Quality Standards, to remove the standard for Total Suspended Particle (TSP) and update exceedance limitation for the carbon monoxide (CO) standard ; R

.61-62.5 , Standard No. 4, Emissionsfrom Process Industries, to remove the obsolete requirement of stack testing for Total Reduced Sulfur (TRS) at facilities that are already required to have a continuous emissions monitoring system (CEMS) installed and to modify the regulatory strategy for cotton gins ; and clarify the definition for major source threshold throughout 61-62. The Department also has deleted R. 61-62

.5 , Standard 6, Alternative Emission Limitation Options ( "Bubble''); and updated the entirety ofR. 61-62 to correct typographical errors , provide clarification, and delete or update obsolete requirements.
A public notice to revise the SIP was published in the State Register on June 25 , 2010. A staff-conducted informational forum (SIF) on the proposed revisions was held on July 26 , 2010. Some stakeholders attended , but no comments were received

. A public hearing before the Board of Health and Environmental Control was held on November I 0, 2010. No comments were received at the public hearing

. Some of these proposed changes were not mandated by the federal government. As such , pursuant to S.C

. Code Section, 1-23-120(H)( 1) these amendments required legislative review

. These amendments were passed by the South Carolina State Legislature on May 11 , 2011. A final notice to revise the aforementioned portion of the SIP was published in the State Register on May 27 , 2011 , at which time it became state effective. Notices of Drafting; Notice of Proposed Regulation ; transcript and sign-in sheet of the SIF ; transcript of the public hearing; and Notice ofFinal Regulation are included in Attachment 3

.

SOUTH CAROLINA DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL 2600 Bui1 Street • Columbia,SC29201 • Phone:(803)898-3432 • www.scdhec.govM. Keyes Fleming July 18, 2001 Page2

Also included in this package (as Attachment 4) is a 11 0(1) demonstration. This attachment evaluates the proposed changes to the regulatory strategy for cotton gins and demonstrates that these changes are at least as stringent (in fact, more stringent) as the previous version of the regulation.
The Department appreciates the as sistance provided by your staff regarding the formulation of these amendments

. The Department certifies that the electronic version of this SIP submission is identical to the hard copy
. Please contact Mr. Andrew 0

. Hollis of the Bureau of Air Quality at 803-898-4196 , or hollisao @ dhec.sc.gov with any questions or comments concerning this SIP revision

.

Robert W. King, Jr. , P

.E. Deputy Commissioner Environmental Quality Control

ec: Scott Davis , Grants Chief , AirPlanning Branch, EPA Region 4 Lynorae Benjamin, Chief , Regulatory Development Section, EPA Region 4 Royce Dansby-Sparks , South Carolina Liaison , EPA Region 4 Joel Huey , Regulatory Development Section , EPA Region 4 Myra Reece, Chief , BAQ, SCDHEC Renee Shealy, Assistant Bureau Chief , BAQ, SCDHEC Robert J. Brown , Director, Div. of Air Assessment, Innovations and Regulation , BAQ, SCDHEC Maeve S. R. Mason , Manager, Regulation and SIP Management Section , BAQ, SCDHEC
CD enclosure: Executive Summary 1. Text of Final Regulations (strikeout and clean copy) 2. Summary of External Stakeholder and EPA Comments with Department Responses 3

. Notices of Drafting, Notice of Proposed Regulation , Transcript and Sign-In Sheet of the SIF, Transcript ofthe Public Hearing, and Notice of Final Regulation 4. 11 0(1) Demonstration 5

. Copy of Legal Authority