Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

1

MISSISSIPPI

DEPARTMENT OF ENVIRONMENTAL QUALITY

OFFICE OF POLLUTION CONTROL

TECHNICAL SUPPORT

DOCUMENT

ATTENDANT TO THE 

STATE IMPLEMENTATION PLAN (SIP) REVISION FOR PURPOSES OF THE

EMISSIONS STATEMENT AND EMISSIONS INVENTORY FOR THE

OZONE NONATTAINMENT AREA OF DESOTO COUNTY, MISSISSIPPI

ADOPTED NOVEMBER 20, 2014
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

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TABLE OF CONTENTS

Discussion.............................................................................................................Page 3

Purpose of the Revision. .......................................................................................Page 3

Sources Affected by the Revision.........................................................................Page 3

Pollutants Involved. ..............................................................................................Page 4

Changes in Allowable Emissions..........................................................................Page 4

Location/Attainment Status. .................................................................................Page 4

Part D SIP/Attainment Demonstration Impact......................................................Page 4

Air Quality Impacts...............................................................................................Page 4

Modeling...............................................................................................................Page 4

Compliance Methods to be Employed..................................................................Page 4

Public Comment Period. .......................................................................................Page 4

Response to Comments on Proposed SIP Revision..............................................Page 5

Regulation Changes. .............................................................................................Page 5

Final Adoption of SIP Revision............................................................................Page 5

ATTACHMENTS

Regulations in EPA format ........................................................................Attachment 1

 11 Miss. Admin. Code, Part 2, Chapter 11

Proofs of Publication..................................................................................Attachment 2

 Notice of Public Comment Period

 Proofs of Publication

Final Adoption Evidence. ..........................................................................Attachment 3

 Commission Order

 Secretary of State Filing Form
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

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DISCUSSION:

The purpose of this State Implementation Plan (SIP) Revision is to implement Sections 

182(a)(1) and 182(a)(3) of the Clean Air Act (CAA), as amended (42 United States Code 

(U.S.C.) 7401 et seq.), with respect to the requirements for an Emissions Statement and an 

Emissions Inventory for the Ozone Nonattainment Area of DeSoto County, Mississippi. 

PURPOSE OF THE REVISION:

The purpose of this State Implementation Plan (SIP) Revision is to implement Sections 

182(a)(1) and 182(a)(3) of the Clean Air Act (CAA), as amended (42 United States Code 

(U.S.C.) 7401 et seq.), with respect to the requirements for an Emissions Statement and an 

Emissions Inventory for the Ozone Nonattainment Area of DeSoto County, Mississippi. 

Section 182(a)(3)(B) of the CAA requires Marginal and above areas to submit an emissions 

statement within 2 years of designation as nonattainment. Specifically it provides that the 

emissions statement must: “...require that the owner or operator of each stationary source of 

oxides of nitrogen or volatile organic compounds provide the state with a statement, in such 

form as the Administrator may prescribe (or an equivalent alternative developed by the state), 

for classes or categories of sources, showing the actual emissions of oxides of nitrogen and 

volatile organic compounds from that source. The first such statement shall be submitted 

within 3 years after the date of the enactment of the CAA Amendments of 1990. Subsequent 

statements shall be submitted at least every year thereafter.” Appendix U contains new state 

regulations which will implement the Emissions Statement requirement for any areas 

designated as nonattainment for the National Air Quality Standard for ground-level ozone. 

The new regulations are 11 Mississippi Administrative Code, Part 2, Chapter 11, Regulations 

for Ambient Air Quality Nonattainment Areas. The regulations are applicable to sources in 

DeSoto County, Mississippi as well as any other areas that might be designated 

nonattainment in the future.

CAA section 182(a)(1) requires that Marginal and above ozone nonattainment areas submit a 

base year emissions inventory for the nonattainment area 2 years after designation as 

nonattainment. The emissions are reported as tons/average summer day of pollutant. In 

accordance with the requirements of EPA’s Emissions Inventory Guidance for 

Implementation of Ozone and Particulate Matter National Ambient Air Quality Standards 

(NAAQS) and Regional Haze Regulations, November 2005, the only pollutants reported are 

Nitrogen Oxides (NOx) and Volatile Organic Compounds (VOC) and emissions are summed 

as tons/average summer day for the year 2011. Appendix V contains the Emission Inventory

for DeSoto County, Mississippi.

SOURCES AFFECTED BY THE REVISION:

This SIP revision potentially affects all sources and practices subject to air pollution control 

regulations in Mississippi.
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

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POLLUTANTS INVOLVED:

The pollutants affected by this SIP Revision are all pollutants for which the U.S. 

Environmental Agency has promulgated a National Ambient Air Quality Standard 

(NAAQS). 

CHANGES IN ALLOWABLE EMISSIONS:

This SIP Revision does not include any provisions for emission limitation changes. 

LOCATION/ATTAINMENT STATUS:

The northern portion of DeSoto County, Mississippi has been classified as Marginal Nonattainment for the 2008 National Ambient Air Quality Standard (NAAQS) for Ozone. All 

other areas of the state are designated attainment for all NAAQS. 

PART D SIP/ATTAINMENT DEMONSTRATION IMPACT:

This SIP Revision conforms with the requirements of Section 182(a)(3)(B) and Section 

182(a)(1) of the Federal Clean Air Act.

AIR QUALITY IMPACTS:

This SIP Revision will have no adverse impact on air quality.

MODELING:

No modeling is necessary for this SIP Revision.

COMPLIANCE METHODS TO BE EMPLOYED:

No compliance methodology is applicable to this SIP Revison.

PUBLIC HEARING:

Public participation on the SIP Revision was achieved by a public hearing held on October 2, 

2014, at 10:30 a.m. in the Commission Hearing Room (Room 104A) of the Mississippi 

Department of Environmental Quality Office Building located at 515 E. Amite Street, 

Jackson, Mississippi 39201 in accordance with the information provided in the public notice 

and Mississippi Administrative Procedures Act. The notice for public hearing was published 

consistent with procedures approved by EPA. 

The notice of public hearing was published on September 2, September 9, and September 16, 

2014, in daily newspapers in the cities of Gulfport, Hernando, Jackson, and Tupelo in the 

State of Mississippi. The notice of public hearing, the proposed SIP revision, and proposed 
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

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amendments to state air pollution control regulations were made available for public review 

in the main branches of the public libraries in Gulfport, Hernando, and Tupelo and at the 

Mississippi Department of Environmental Quality, 515 E. Amite St., Jackson, Mississippi, 

39201 and was also available on the Department’s website http://www.deq.state.ms.us. The 

public notice was also mailed to persons on the air pollution control regulation mailing list.

TSD Attachment 2 contains a copy of the notice of public hearing and copies of proofs of 

publication of the notice of public hearing.

RESPONSE TO COMMENTS ON PLAN REVISION:

No comments regarding the SIP Revision other than from EPA were received during the 

public comment period. Changes suggested by EPA were incorporated into the SIP 

Revision. Attachment 3 contains the EPA comment letter.

REGULATION CHANGES:

Appendix U of the SIP Revision contains new state regulations which will implement the 

Emissions Statement requirement for any areas designated as nonattainment for the National 

Air Quality Standard for ground-level ozone. The new regulations are 11 Mississippi 

Administrative Code, Part 2, Chapter 11, Regulations for Ambient Air Quality

Nonattainment Areas. The regulations are applicable to sources in DeSoto County, 

Mississippi as well as any other areas that might be designated nonattainment in the future.

See TSD Attachment 1.

FINAL ADOPTION OF PLAN REVISION:

TSD Attachment 4 contains evidence of final adoption of the SIP revision. 
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

ATTACHMENT 1

REGULATIONS IN EPA FORMAT
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

ATTACHMENT 2

NOTICE OF PUBLIC HEARING

PROOFS OF PUBLICATION
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

ATTACHMENT 3

EPA COMMENT LETTER
Mississippi NAA SIP, Final

Technical Support Document

Adopted November 20, 2014

ATTACHMENT 4

EVIDENCE OF ADOPTION OF SIP REVISION AND REGULATIONS