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2010 Nitrogen Dioxide Infrastructure SIP Prongs 1 & 2, Final State of Mississippi 

## Mississippi Certification Clean Air Act Sectio n 110(a)(1) and (2)

2010 Nitrogen Dioxide Requirements

Section 110(a)(2)(D) Prongs 1 and 2

This certification addresses Mi ssissippi’s obligations under Sec tion 110(a)(2)(D) Prongs 1 and 2 of the Clean Air Act for the 2010 Nitrogen Dioxi de National Ambient Air Quality Standards (NAAQS). The following state regulations poten tially control nitrogen oxide/nitrogen dioxide emitting sources in the State of Mississippi and are part of the State Implementation Plan (SIP).

APC-S-1 Mississippi Commission on Environmental Quality “Air Emission Regulations for the Prev ention, Abatement, and Control of Air Contaminants”

APC-S-2 Mississippi Commission on Environmental Quality “Permit Regulation for the Construction and/or Operation of Air Emissions Equipment”

APC-S-3 Mississippi Commission on Environmental Quality “Mississippi Regulations for the Preventi on of Air Pollution Emergency Episodes”

APC-S-5 Mississippi Commission on Environmental Quality “Mississippi Regulations for the Preventi on of Significant Dete rioration of Air Quality”

Appendix A-9 Mississippi Code Title 49

Section 110(a)(2)(D)

1. Contribute significantly to nona ttainment of NAAQS for areas in another state (Prong 1).

All monitored sites in Mississippi and surr ounding states have been designated as unclassifiable/attainment for the 2010 NO 2 1-hour primary standard. In Table 1, the Nitrogen Oxides (NOx) emissions are list ed by category for the years 2005, 2008, and 2011. Although there is some variation within the individual categor ies, the total NOx emissions are showing a sign ificant downward trend. In Table 2, the total NOx emissions from Mississippi are compared to the total NOx emissions from surrounding states. This table illustra tes that the surrounding states are also s howing downward trends in NOx emissions. In Ta ble 3, the highest monitored 2010 NO 2 NAAQS Design Values for Mississippi and surrounding states are shown. All design values data shows that these sites are meeting the 2010 NO 2 1-hour primary standa rd. Thus, Mississippi does not significantly contribute to nonatta inment areas in nearby states because the nearby states have not been designated as nona ttainment for this standard. In Table 4,2

2010 Nitrogen Dioxide Infrastructure SIP Prongs 1 & 2, Final State of Mississippi the Mississippi monitored 2010 NO 2 NAAQS Design Values shows the general downward trend of NO 2 concentrations at this site.

Table 1. 2005–2011 Mississippi Nitrogen Oxides Emissions by Category

Category 2005 NOx Emissions (Tons) 2008 NOx Emissions (Tons) 2011 NOx Emissions

(Tons) Point Sources 95,755 95,154 65,737 Area (Non-Point Sources) 46,896 35,502 43,048

On-Road Mobile Sources 88,695 96,749 91,054

Non-Road Mobile Sources 25,676 19,438 17,265

Total 257,022 246,843 217,104 Source : National Emissions Inventory (exc ept 2005 Area and Non-road Mobile are based on state data)

Table 2. 2005–2011 Mississippi and Surroundi ng States Total Nitrogen Oxides Emissions

State 2005 NOx Emissions

(Tons) % Change 2008 NOx Emissions

(Tons) % Change 2011 NOx Emissions

(Tons) Mississippi 257,022 -4.0 246,843 -12.0 217,104 Alabama 435,826 -12.3 382,210 -5.9 359,836 Arkansas 238,943 -4.6 227,983 1.9 232,268 Louisiana 669,859 -24.7 504,410 5.3 531,069 Tennessee 457,717 -8.4 419,236 -23.1 322,514 Source : National Emissions Inventory

Table 3. Highest Monitored 2010 NO 2 NAAQS Design Values (ppb)

State 2009- 2011 DV % of NAAQS 2010- 2012 DV % of NAAQS 2011- 2013 DV % of NAAQS 2012- 2014 DV % of NAAQS

Mississippi 35 35% 34 34% 33 33% 32 32% Alabama * * * * 46 46% 51 51% Arkansas 46 46% 51 51% 50 50% 49 49% Louisiana 55 55% 54 54% 52 52% 49 49% Tennessee 43 43% 44 44% 42 42% 51 51% * Invalid Data Source: EPA AQS3

2010 Nitrogen Dioxide Infrastructure SIP Prongs 1 & 2, Final State of Mississippi Table 4. Mississipp i Monitored 2010 NO 2 NAAQS Design Values (ppb)

County 2009- 2011 DV % of NAAQS 2010- 2012 DV % of NAAQS 2011- 2013 DV % of NAAQS 2012- 2014 DV % of NAAQS

Jackson 35 35% 34 34% 33 33% 32 32%

Source: EPA AQS

SIP Section APC-S-2, Section VI. provides for the enforcem ent of measures described in Section 110(a)(2)(A). SIP Secti on APC-S-2, Section 1.D. lists permitting requirements including those for minor ne w source review permitting. SIP Section APC-S-2, Section II.A. requires that no permit shall be issued unless the applicant has complied with applicable requirements from state regulation APC-S-4 (Ambient Air Quality Standards) including the NO 2 NAAQS. The APC-S-4 regulations were updated on October 24, 2013, using a new regulatory numbering system. Those regulations are shown here . Therefore, the aforementi oned state regulations control and regulate sources of NO 2 emissions through the state’s permitting program.

2. Interfere with maintenance of N AAQS by any other State (Prong 2).

For the same reasons listed in Prong 1, Missi ssippi does not interfere with maintenance areas in nearby states because the nearby stat es do not have maintenance areas for this standard.4

2010 Nitrogen Dioxide Infrastructure SIP Prongs 1 & 2, Final State of Mississippi Response to Comments for Mississippi 2010 Nitrogen Dioxide Infrastructure SIP for Clean Air Act Requirements Section 110(a)(2)(D) Prongs 1 and 2.

EPA Region IV commented a comment le tter dated May 6, 2016. The comments concerned the emissions inventory and the ap propriate changes have been made. No other comments were received during th e public comment peri od. The EPA comment letter follows this page.5

2010 Nitrogen Dioxide Infrastructure SIP Prongs 1 & 2, Final State of Mississippi Public participation for Mississippi 2010 2010 Nitrogen Dioxide Infrastructure SIP for Clean Air Act Requirements Section 110(a)(2)(D) Prongs 1 and 2.

Public participation for the above refere nced infrastructure SIP was achieved by a public comment period that began on April 6, 2016 and ended on May 6, 2016. The public notice was published consistent with procedures approved by EPA.

The notice of public comment period wa s published on April 6, 2016, in daily newspapers in the cities of Gulfport, Jacks on, and Tupelo in the State of Mississippi. The notice of public hearing and the draft SI P was made available for public review in the main branches of the public libraries in Gulfport and Tupelo, Mi ssissippi and at the Mississippi Department of Environmen tal Quality, 515 E. Amite St., Jackson, Mississippi, 39201 and was al so made available on the Department’s website http://www.deq.state.ms.us.

The public notice and proofs of publication follows this page.6

2010 Nitrogen Dioxide Infrastructure SIP Prongs 1 & 2, Final State of Mississippi Public Notice Mississippi Commission on Environmental Quality P. O. Box 2261 Jackson, MS 39225 Telephone No. (601) 961-5171

Public Notice Start Date: April 6, 2016 MDEQ Contact: Jerry Beasley Deadline for Comment: May 6, 2016

Please take note that the Miss issippi Commission on Environmen tal Quality (“Commission”) is providing draft information for comment regarding the Mississippi Certification that the State Implementation Plan for the Contro l of Air Pollution is adequate to comply with the requirements of Section 110(a)(2) Prongs 1 & 2 of the Federal Clean Air Ac t for the 2010 Nitrogen Dioxide 1- hour Primary National Ambient Air Quality St andard (NAAQS) as promulgated by the U.S. Environmental Protection Agency (EPA).

Copies of the draft certification may be obtaine d by writing or calling Mr. Lorenzo Boddie at the address and telephone number listed above. The dr aft certification info rmation will also be available for public review from Wednesday, April 6, 2016 through Frid ay, May 6, 2016 at the main branch of public libraries in cities of Gulf port and Tupelo. For those persons with internet access, the draft certification information may be found on the Mississippi Department of Environmental Quality’s website at http://www .deq.state.ms.us by clicki ng on Programs/Air/New Information.

Persons wishing to comment on the draft certification are invited to submit comments in writing to Jerry Beasley at the Commi ssion’s mailing address shown above or by courier to Mississippi Department of Environmental Quality, 515 E. Am ite St., Jackson, Mississi ppi 39201, no later than 5:00 p.m. on Friday, May 6, 2016. All comments rece ived by this date will be considered in preparation of the final submission of the certific ation information to EPA. A public hearing may be held if the Commission finds a significant degree of public interest in th e draft certification.

Please bring the foregoing to the attention of persons whom you know will be interested.