UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 8



### Ref: 8P-AR Bryce Bird, Director Utah Division ofAir Quality P. 0

. 

### Box 144820 Salt Lake City, Utah 84114-4820 1 595 Wynkoop Street DEN V ER, CO 80202-1129 Phone 800-227-8917 http://www.epa

.gov/region08



### JUN 17 2015

Re: State Implementation Plan (SIP) Attainment Plan for the Logan, UT-ID PM2.s Nonattainment Area; Transportation Conformity Adequacy
Dear Mr. Bird:
The EPA has reviewed the Logan, UT-ID PM2.s Attainment Plan SIP revision, SIP Section IX. Part A.23, that was submitted by the Governor in a letter dated December 16, 2014

. Our review was with respect to federal transportation conformity requirements.
Based on our review, we have found the Logan, UT-ID PM2

.s Attainment Plan, and the new 2015 motor vehicle emissions budgets (MVEB) contained in the plan, adequate for purposes oftransportation conformity

. Our finding involves the MVEBs, as identified for the Logan/Cache County portion ofthe nonattainment area, for PM.2

.s, nitrogen oxides (NOx), and volatile organic compounds (VOC). This finding is based primarily on the Logan, UT-ID PM.2

.s Attainment Plan and the MVEB's ability to meet the applicable procedures and criteria for adequacy pursuant to 40 CFR 93 .11 8 ofthe federal T

ransportation Conformity Rule (see 40 CFR 93, Subpart A). We will announce our adequacy finding by publishing a Notice in the Federal Register; the adequacy finding will then become federally effective 15 days after the publication ofthe Notice.
As 

### part ofour adequacy review, we announced receipt ofthe Logan, UT-ID PM2

.s Attainment Pl an and posted an announcement ofavailability on EPA' s Office ofTransportation and Air Quality website at: http:/ /www.epa.gov/otag/stateresources/transconf/currsips

.htm. We requested public comments by April 22, 2015. We did not receive any comments. The 2015 MVEBs that we found adequate for the Logan, UT-ID PM2

.s Attainment Plan, for the Logan/Cache County portion ofthe nonattainment area, are 0.32 tons per day (tpd) for PM2

.s, 4.49 tpd for NOx , and 3

.23 tpd for VOCs.
EPA's adequacy finding affects future transportation conformity determinations as prepared by the Cache Metropolitan Planning Organization and the conformity determinations as found to conform by 

### the Federal Highwa y Administration and Federal Transit Administration.Please note that this adequacy finding is separate from EPA's future rulemaking action on the Logan, UTID PM2.s Attainment Plan SIP revision and should not be used to prejudge EPA's approval or disapproval ofthe SIP revision.
Ifmembers ofyour staffhave any questions, please have them contact Tim Russ ofmy staffat 303-312- 6479 or email at russ.tim@epa.gov. 

# w20.

Carl Daly, Direc» Air Program

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® Printed on Recycled PaperCache County, Logan, Utah PM2.s Attainment Plan Adequacy Evaluation
Transportation Review Criteria Is Criterion Reference in SIP Document I Comments Satisfied? Sec. 93

.l 18(e)(4)(i) The plan was y December 16, 2014 letter from Gary R

. endorsed by the Herbert, Governor ofUtah

. Governor (or The submittal includes evidence of a public designee) and was hearing that occurred on October 20, 2014 subject to a public before Kathy Van Dame, Utah Air Quality hearing. Board (UAQB) hearing officer. Public Hearing Notice: Published; Utah Division ofAdministrative Rules (DAR) , Utah State Bulletin dated October 1, 2014. Sec. 93.l 18(e)(4)(ii) The plan was y The submittal was developed by the Utah developed through Division ofAir Quality (UDAQ) with input consultation with from federal agencies (including EPA) , local federal , state and authorities , regulated businesses, and the local agencies; full Metropolitan Planning Organization (MPO). implementation EPA provided comments on the plan in our plan documentation letter of October 30 , 2014. EPA ' s was provided and comments , and other comments , were EPA's stated addressed in the Administrative concerns, if any , Documentation that was submitted by Bryce were addressed. Bird, Director ofUDAQ , in a letter to EPA dated December 22 , 2014. Sec. 93 .118(e)(4)(iii) The Motor Vehicle y Control Measures for Area and Point Emissions Budgets Sources , Fine Particulate Matter, PM2

.5 SIP (MVEBs) are for the Logan, UT-ID Nonattainment Area, clearly identified Section IX. Part A.23. Chapter 7: and precisely Transportation Conformity (Logan-Page 60) , quantified. Section 7.6: Transportation Conformity PM2.s Budgets , Table 7.1; 0.32 tons per day ofPM2.s, 4.49 tons per day ofNOx, and 3.23 tons per day ofVOCs

. Sec. 93 .118 (e)(4)(iv) The motor vehicle y The 2015 MVEBs are consistent with the em1ss1ons Attainment Demonstration and Plan as budget(s) , when described in the Utah SIP ; Control Measures considered together for Area and Point Sources , Fine Particulate with all other Matter, PM2. s SIP for the Logan, UT-ID em1ss10n sources , Nonattainment Area, Section IX. Part A.23. is consistent with applicable requirements for reasonable further progress , attainment, or maintenance (whichever is 1Transportation Review Criteria Is Criterion Reference in SIP Document I Comments Satisfied? relevant to the given plan). Sec. 93.l 18(e)(4)(v) The plan shows a 

### y The Utah SIP, Control Measures for Area clear relationship and Point Sources , Fine Particulate Matter, between the PM2

.s SIP for the Logan, UT-ID em1ss1ons Nonattainment Area Section IX. Part A.23 , budget(s), control Chapters 4, 5, 6, and 7 show the relationship measures and the between the mobile source emissions , total emissions MVEBs , control measures and the total inventory. emissions inventory
. Sec. 93.l 18(e)(4)(vi) Revisions to 

### y Mobile source emissions and motor vehicle previously and MVEBs were documented with the submitted control Governor ' s December 16 , 2014 submittal of strategy or the Control Measures for Area and Point maintenance plans Sources , Fine Particulate Matter, PM2

.s SIP explain and for the Logan, UT-ID Nonattainment Area document any Section IX. Part A.23. The Governor' s changes to any December 16, 2014 letter notes that a prior previous submitted December 14, 2012 SIP submittal for the budgets and control Control Measures for Area and Point measures; impacts Sources , Fine Particulate Matter, PM2.s SIP on point and area for the Logan, UT-ID Nonattainment Area source em1ss1ons; Section IX

. Part A.23 , was withdrawn. any changes to established safety margins (see 93.101 for definition) , and reasons for the changes (including the basis for any changes to emission factors or estimates of vehicle miles traveled)

. Sec. 93.l 18(e)(5) EPA has reviewed 

### y EPA reviewed Section H ofthe the State ' s Administrative Documentation, as submitted compilation of by Bryce Bird, UDAQ , letter ofDecember public comments 22 , 2014 , for the Utah SIP Control Measures and response to for Area and Point Sources , Fine Particulate comments that are Matter, PM2.s SIP for the Logan, UT-ID required to be Nonattainment Area Section IX. Part A.23. submitted with any Administrative Documentation Section H is implementation entitled " Comments

- Hearing " and plan. contains: " PM2.5 SIP Sections IX.A.21 , IX.A.22 , IX.A

.23 and SIP Sections IX.H.11 , 2Transportation Review Criteria Is Criterion Reference in SIP Document I Comments Satisfied? 12 and 13: Comments and Responses to Comments Made During the October 2014 Public Comment Period." Reviewers: Tim Russ , USEPA , Region 8 Date of Review : March 16, 2015

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