# \1E 0 S?.

) 

# UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

REGION IX

L PRO 

# 75 Hawthorne Street

San Francisco, CA 94105-3901



# NOV 222013

\lr. 

# Lrr C. sri. 

# 1 ijycicir



# Air ()afitv Diviso:

Arizona 

# L)cpartment of ivirmmeithil 

# Quality



# 1111) \\cst 

# Washinciun Si.

ICHi x. An zona 

# 05 ( )( ) 7



# Mr. Dennis Smith. Executive Director

Maricopa Association ot 

# Governments

302 

# tsorth 1 St 

# Avenue 

# Suite 300

Phoenix. Arizona OS! 103

k \ I 

# mdiii ut \ 

# n op 

# C 

# ount )j\ 

# 1-10 Non itt 

# unim

lit 

# Ai i



# Deer .‘ascv



# In ecrurdLince with -lt) (‘.Rk. 03.11 

# S’( 11(u). ihis leiter transmits 

# our decision that the motor 

# vehicle

s 

# hudoet (\ I \‘F 

# K) for particulate matter 

# less than 1) 

# microns (PM- 10) 

# in the Fire Perreiii i 7 un

fur 

# 11/-! (1 fur F’ fuji 

# c ‘ivy (u?u1n AOI1C!llalIli;IC’nI

- 

# l

rca 

# (.lIm 

# 2012) 

# (Five Percent Plan) is 

# adequate ilu

ire sr rwti. 

# coaGrniiv purposes. tpun the elldctive date of this adequacy determination (15 

# dass

aErn 

# publicati in of our determinatuon in the In:’L’1ul RL’i,f IC;.). 

# the 

# ivlaiieopJ Association of



# Governments (f\L\Oi) 

# and ihe I J.S. 

# Department ot 

# 1rinsportation must use 

# the MVEB in the Five



# Percent Plan in Eiiure 

# eon form itv 

# analyses. 1

The Five Percent Plan, which was submitted to the U.S. Environmental Protection 

# Agency on May 25.



# 2012. identilies a PM-lu MIVI/13 for the Muricope County Nonattainncnt Area of 

# 5-UP metric 

# tons per



# day ftir 2(112. We announced receipt of the Five Percent 

# Plan and the 

# N’IVEB on IEPAs transportation

con Formitv Web site on September 12. 

# 2013 and requested public comment on the MVEB by October

15. 2013. We 

# received

no comments in resuonse to 

# the 

# adequacy review posting.

in reaching our adequacy deiei’mination. we have delerinined that the M V[IB in the Five Percent Plan.

when coiisideieci witi i 

# aI I other cmissions sources in the Marieopa County Nonauainment Area. is



# eunsisient with he :adequec criteria 

# tound in 41) CFR 03. 11 

# Si e)(4). 

# We have enclosed a table thai

summarizes our adequacy determination. ‘2re 

# isill SOOfl Post 

# this 

# information on the Internet at:



# udrLlnacv.htm.

i’lcase note 

# that an a lequnes review is separate From 

# EP 1 ’’s review 

# of’ the 

# Five Percent Plan. and 

# should

not he used to 

# predict EPA s action liar the SI 

# P.

‘1 ode’ 

# s adequacy cleterm HLIL 

# ion dues not supercede I: )\ 

# s action on an earlier I’M- 

# 10 MVEB ol 59.2 

# metric ions 

# per dcv

in eOflflCC!]Ufl 

# with our apnrovLn ci 

# the Serious Area Plan 

# liar PM-I 0. 

# which 

# was final ited 

# i cdv 25. 2002. 67 

# FR 4S7 1

. 

# As a practical metier, how 

# ever. the i 

# 1VLU 

# in the Five Perceni Plan will 

# he 

# controlling because ills a 

# lower \‘alue.

Printed on Recycled Paperif von have any questions regarding this decision, please contact Colleen ivI faughan n (520) 5—O I S or Greg Nudcl at (415) 947-4107. Sincerely. LcThorah Jordan Director. Air Division l-nc1osure cc: Lindy Bauer, i\’Iaricopa ,i\ssociation of Governments Dean Giles. Maricopa Association of Governments Beverly Chenauskv. Arizona Department of Transportation Ed Stillings. Federal 1—ligh\vay AdmimstrationEnclosureTransportationConformityA(lequacvReviewControlStrategySlateImplementationPlan(SIP)UnderReview:Fii’ePeive;nDateofSIPRevisionReceiptbyEPA:5/25’12P/un/ta’P31-10/Q1’1/ic.1ILII’icU/)cCoii,iiiAOiidlliliiiiiC/71.-Irci(1ILfl20/2)Reviewer:GregNnddDate:II2013TransportationReviewCriteriaIsCriterionReferenceinSIPDocumentCommentsSatislied?y:Sec.93.IISte)14)(i)TheplanwasendorsedbytheYThecoerlettertransmittingtheSIP,datedMay25.2012.wasfroniHenry(Jo\ernor(ordesionee)andwasDarwin.Director.ArizonaDepartmentofEnvironmentalQuality(ADEQ)tosubjecttoapublichearing..JaredBlumenfeld.RegionalAdministrator.USEPARegion9TherewasdocumentationinthepackagedemonstratingthatADEQhasbeendesignatedbtheGovernorofArizonatosubmitsuchplanstoEPA.Therewasalsoinformation:intheSIPpackagedemonstratingthattheMaricopaAssociationofGoernments(MAGIwastheappropriateagenctodeclaptheplanfortheareasofMaricopaCountywithintheP\1—10nonattainmentarea.ApublichearingwasheldbyMAOonApril12.2012.DocumentationofthishearingmaybefoundinAppendixEofthesubmittedplan.Sec.93.11S(e04)(ii)Theplanwasde\elopedlthroughYDuringthedevelopmentoftheplan.thestrticture.approachandcontrolmeasuresconsultationwithfederal.stateandwerediscussedandcoordinatedinmeetingsofthe\IAGAirQualityTechnicallocalagencies;fullimplementationAdisoryCommittee.Thealmost—finalversionoftheplanwasclisctissedatanplandocumentationwasprovidedApril26.2012.TheAirQLlalitvTechnicalAdvisoryCommitteeincludesandEPA’sstatedconcerns,ifany,representativesfromEPA,Federall-lighwavAdministration.ArizonaDepartmentwereaddressed.ofTransportation,andlocalgovernmentssuchasMaricopaCounty.Phoenix.Mesaandsmallercities.Sec.03.11S(eH-I)(iii)ThemotorvehicleemissionYChapter6oftheplanclearlyquantifiesandidentifiesthemotorvehicleemissionsbudget)s)isclearkidentifiedandbudget(pp6-12through6-43).\iAGusedMOVES201OntocalculatePM-I0precisel\quantified,emissionsfromexhaust,tireandbrakewear.TheyusedtheJanuar2011versionofAP-42’sappropriatemethodstocalculatere—entraineddustemissionsfrompavedroadsanddustemissionsfronmunpavedroads.Sec.93.11S(et(4)(iv)IhemotorvehicleemissionsVEPAhasdeterminedthattheMVEB,whenconsideredtogetherwithallotherbudget(s),whenconsideredtogetheremissionsources,areconsistentwithrequirementtodemonstratefivepercentwithallotheremissionsources.isreductionsuntilattainment,reasonablefurtherprogt’andattainmentofthePM—consistentwithapplicable10standard.(SeeChapters4.5and6oftheplan)requirementsforreasonablefurtherprogress,attainment,ormaintenance(whicheverisrelevanttothegivenplan).Sec.93.118(e)(4)(v)TheplanshowsaclearrelationshipYTheon—roadcontrolmeasuresincludetheuseofPM—10certifiedstreetsweepers.amongtheemissionsbudget(s).pavingandstabilizingunpavedroadsandalleyandshoulders,reducedspeedcontrolmeasuresandthetotallimitsandoverlayinghighwayswithrubberizedasphalt.Thesewereimplementedemissionsinventory,asadvancedcontingencymeasuresandthereductionswerenotconsideredindemonstrating500reductions.RFPorattainment,butthesecontrolsareassumedinthecalculationoftheMVEB.(Chapter4)Thereweresomeancillarybenefitstotheon-roademissionsduetoincreasedcompliancewith\iaricopacounts’rulesforstabilizingPrivateunpaedroadsandalleys.Thesebenefitswereincludedintheemissionsinventoryforthe50reductions.RFPandattainmentdemonstrationsandintheMVEBs.(Chapters5and6)Sec.93.1l8(e)(4)(i)RevisionstopreviouslysubmittedYThepreviousMVEBundertheapprovedSeriousAreaPlanforPM-bwas59.7controlstrategyormaintenanceplansmetrictonsperdaofPM—10.Thebudgetinthisplanis54.9.hichislowerdueexplainanddocumentanychangestotochangesinmethodology,improvementsinrulecomplianceandreductionsclueanyprevioussubmittedbudgetsandtopavingofroads,allesandshouldersandfromimprovedstreetsweepers.controlmeasures:impactsonpoint84.690oftheon-roademissionsarefromre—entraineddustanddustfromunpavedandareasourceemissions:anroadsandalleys.TheseemissionsarecalculatedusingmethodsfromAP-42.EPAchangestoestablishedsafetymarginshasreviewedtheAP—12method,resultinginamoreaccurate.bLitlowerestimate(see93.101fordefinition),andofemissionsfortheMaricopaCount\PM—10NonattainmentArea.Thisreasonsforthechanges(includingcalculationisdiscussedoninChapter5ofthe2008\laricopaCountyEmissionsthebasisforanchangestoemissionInventoryvhichisincludedasAppendixAoftheplan.AsaresultofthesefactorsorestimatesofVMT.changes.theasmalleremissionsbudgetisappropriateforthearea.eenthoughvehicIcmilestraveledisincreasing.Theotherrequiredreductionsforthedemonstrationsintheplanweremadebimprovingcompliancewithdustcontrolregulationsforconstructionprojectsandundevelopedlands.Theareaisalsomakinggoodprogressredticingroad—relatedemissionsbyimprovedstreetsweepingandaprogramtopaveorstabilizeroads.alleysandshoulders.Sec.93.11S(e)(5)EPAhasreiewedtheState’sYMAGacceptedandrespondedtoverbalandwrittenpubliccommentsontheplancompilationofpubliccommentsandaspartoftheirpublichearingprocessdocumentedinAppendixEoftheplan.responsetocommentsthatareMAGaddressedallpubliccommentsindetailandsubmittedboththecommentsrequiredtobesubmittedwithanyandtheirresponsesaspartofAppendixE.EPAhasreviewedthesecommentsandimplementationplan.responsesandhasconsideredtheminourfindingthattheMVEBsareadequate.