Ms. He'ather McTeerToney Regional Administrator U.S. EPA, Region 4 61 Forsyth Street, S.W. Atlanta, Georgia 30303-3104 

## Georgia Departmentof Natural Resources Environmental Protection Division 2 Martin Luther King Jr. Drive, Suite 1456,Atlanta, Georgia30334 Judson H. Turner, Director (404) 656-4713



# FEB 052015

RE: Amendmentsto Georgia's State Implementation Plan (SIP) pertaining to: Revisions to Georgia Rule (mmm), NOx Emissions from Stationary Gas Turbines and Stationary Engines, Removal ofGeorgia Rule (aaa), Consumerand Commercial Products, Removal ofGeorgia Rule (bbb), Gasoline Marketing Rule Dear Ms. Toney: With this letter, the Georgia Environmental Protection Division (EPD) is submitting for approval and incorporation to Georgia's State Implementation Plan (SIP) revisions to Georgia Rule 391- 3-1-.02(2)(mmm), NOx Emissions from Stationary Gas Turbines and Stationary Engines used to Generate Electricity, and amendments to remove Georgia Rule 391-3-1-.02(2)(aaa), Consumer and Commercial Products, and Georgia Rule 391-3-1-.02(2)(bbb), Gasoline Marketing, from the Georgia SIP. Georgia EPD demonstrates in this SIP revision that these revisions to Georgia's SIP are consistent with section 110 (I) ofthe Clean AirAct and will not interfere with the attainment ofthe National AmbientAir Quality Standards orwith reasonable further progresstowardthat attainment. This SIP submittalfocuses on ozone and PM2.5, thetwo national ambient airqualitystandards that could be impacted bythe removal ofthese rules. While ozone is the mostly likelystandard to be affected, PM2.5 has also been evaluated. Georgia is currently in attainment for S02, N02, CO, and lead; and these revisions to the SIP will not increase emissions of these pollutants or their related precursors. There is no concern these SIP revisions will interfere with compliance with these NAAQS in these attainmentareas. Specifically, in the case ofS02, EPA has not designated any counties in the metroAtlanta area as nonattainment and this SIP revision will not increase emissions of S02 or its precursors such that the area would violate the NAAQS. As required bythe federal SIP-processing regulations, we have enclosed certifications thatthe required public notices were provided and that public hearings were held. EPA submitted a letter with one written comment on the proposed amendments indicating that subsequent guidance may need to be provided in the future on the contingency measures documented in this SIP revisions due to the newly effective implementation of the Cross State Air Pollution Rule (CSAPR). No verbal public commentswere received at the public hearing. Georgia EPD has, however, made one change in the draft SIP revision. Sections 7.1.2 and 7.1.3 were changed to clarifythe actions necessary ifcontingency measuresareto betriggered.Ms. Heather McTeerToney Page 2

We have also enclosed the administrative materials and technical support to satisfy the SIP submittal completeness criteria checklist. This submittal includes one paper copy of the relevant document and a compact disk with an electronic version of the document. The electronic version is an exact duplicate of the paper copy with the following exceptions. Per Attachment A of Janet McCabe's April 6, 2011, memo pertaining to consistency of SIP administrative requirements, the following portions of the submittal are provided in the

. electroniccopy only:

• Appendix C-1: Atlanta Sensitivity Summary: Spreadsheetof Data forSensitivityAnalysis (one datafile) • Appendix D: SEMAP Sensitivity Study Final Report (one .pdffile) • Appendix E: Diesel Retrofit Documentation (two datafiles)
Paper copies ofthese large data files are not provided in orderto relieve unnecessary paper burden. One copy ofthis submittal will be sentto the EPA Region 4 associates noted below. We lookforward to your reviewand approval ofthese revisions. Should you oryourstaff have any questions, pleasefeel free to contactJames Boylan at (404) 363-7014. Sincerely,

;pudson

### f-1. Turner (/Director 

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c: Scott Davis, EPA Region 4 Lynorae Benjamin, EPA Region 4 Keith Bentley, Branch Chief, EPDAir Protection Branch Enclosures:
- Administrative Checklist

- Technical Checklist

- Certification ofPublic Hearing

- Copy ofPublic Notice