# S7 41

.



# UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

- 

# xI11___



# REGION IX

t? C>

PRCY” 

# 75 Hawthorne Street

San Francisco, CA 94105-3901



# MAR 112013

James N. Goldstene. Executive Oflicer



# California Air Resources Board

1001 1 Street, P.O. Box 2815

Sacramento, California 95812



# Re: 

# Adequacy Fnding 

# for San Diego 

# County Ozone 

# Motor Vehicle Emissions Budgets

Dear Mr.L C stene:



# We have found adequate 

# for transportation conformit purjoses the motor vehicle emissions budgets



# (MVEBs) in the 

# 1?edesiiiciiion Request and Maintenance Plan Jr the 1997 National Ozone Standard

/n San Diego 

# County (December 2012) 

# (San Diego Plan”) for the 1997 8—hour ozone national ambient

air quality standard (NAAQS). 

# As a result 

# of our adequacy finding, the 

# San Diego Association of



# Governments (SAN DAG) and the I.S. Department of Transportation must use these budgets in 

# future

conlormitv analyses.



# The San Diego Plan was 

# adopted by the governing board 

# of the San Diego County Air Pollution Control

District (SDCAPCD) 

# on December 5. 

# 2012. The California Air Resources Board (CARB) formally



# adopted the 

# San Diego 

# Plan on December 6, 2012, 

# and they submitted it to the U.S. Environmental

Protection 

# Agency

on 

# December 28. 2012.

The San Diego Plan identities 

# MVEBs for the San Diego County 

# area for volatile organic compounds

(VOCs) 

# and oxides of nitrogen (NO\) for 2020 

# and 2025. We announced receipt of the 

# San Diego Plan

on 

# the Internet on December 20. 

# 201 2. and requested public 

# comment by January 22, 201 3. We did not



# receive any comments on the budgets and San Diego Plan during the 

# comment period. We will be acting

on the San Diego 

# in a subsequent Federal Register notice.



# This letter 

# transmits our decision that the MVEI3s 

# in the San Diego Plan for the San Diego 

# County area

are 

# adequate lor 

# transportation conformity decisions. The adequate budgets arc listed 

# in the following



# table.

Motor Vehicle Emissions Budgets for Ozone

S an Di ego County Nonattainment Area



# VOC NO.,

Budget Year 

# tons ier average 

# summer day tons per average 

# summer day

2020 23 38

2025 21 30

Pruned on Recycled PaperIn reaching this decision, we have reviewed the San Diego Plan, including responses to public comments on the plan. and have determined that the related MVEBs. when considered with all other emissions sources in San Diego County. are consistent with applicable requirements for maintenance o the 1997 8—hour ozone NAAQS through the year 2025. The budgets also meet the other adequacy criteria found in 40 CFR 93.1 18(e)(4). We have enclosed a table that summarizes our adequacy determination. We will soon post this information on the Internet at: http://www.epa.ov/otag/stateresources/transconf/adeg LIaCY.htm. We will also announce this adequacy determination in the Federal Redster. This determination will become effective 15 days after the Federal Redster announcement pursuant to 40 CFR 93.11 8(f). If you have any questions regarding this decision, please contact Amy Zimpfir at (415) 947—41 46 or John Ungvarsky at (415) 972-3963. Sincerely. Aioi’ctai9 Director. Air Division

Enclosure cc: Lynn Terry. Deputy Executive Officer, CARB Robert Kard, Air Pollution Control Officer, SDCAPCD

Gary L. Gallegos, Executive Director, SANDAG Joseph Vaughn, Federal Highway Administration Ted Matley. Federal Transit Administration Mike Brady, CA Department of TransportationEnclosureTransportationConformityAdequacyReviewControlStrategyStateImplementationPlan(SIP)UnderReview:DateofSIPRevisionReceiptbyEPA:1/4/13RedL’signationRequestandIaintenancePlan,forthe199”NationalOzoneStandard/brSanDiegoCounR(Decenther2012)Reviewers:JohnUngvarskvDate:3/613TransportationReviewCriteriaIsCriterionReferenceinSIPDocumentCommentsSatisfled?Y/NSec.TheplanwasendorsedbytheYTheDecenther28.2012transmittallettersubmittingtheRedesignation93.118(e)(4)(i)Governor(ordesignee)andwasRequestandUauitenaneePlan/brthe1997NationalO:oneStandard/orsubjecttoapublichearing.SanDiegoCounty(Decemher2012)(SanDiegoplan”or“plan”)wassentbytheCARB’sExecutiveOfficer.JamesGoldstene,theGovernor’sdesignee.OnNovember2.2012,theSDCAPCDpublishedintheSanDiegoCommerce.anexspaperofgeneralcirculationwithintheSanDiegoarea.anannouncementthatapublichearingwouldbeheldonDecember5.2012toconsiderandapprovetheSanDiego8-hourmaintenanceplan.CopiesoftheplanweremadeavailableforviewingattheSDCAPCD’sofficesandontheirwebsite.1OnDecember5.2012.theAirPollutionControlBoardofSanDiegoCountyadoptedtheSanDiego8-hourmaintenanceplanatthepubliclynoticedpublichearing.Followingadoption.SDCAPCDforwardedtheplantoCARB,theGovernorofCalifornia’sdesigneeforSIPmatters,andCARBthensubmittedtheplanonDecember28.2012asarevisiontotheCaliforniaSIPtoEPAforapproval.Theredesignationrequestandmaintenanceplan.titled‘RedesignationRequestandMaintenancePlanforthe1997NationalOzoneStandardforSanDiegoCounty.”maybefoundatthefollowingSDCAPCDwebaddress:hitp:www.sdapcd.oruplannine!8FlourO3_Maint-Plan.pdfTheplanwasdevelopedthroughconsultationwithfederal,stateandlocalagencies:fullimplementationplandocumentationwasprovidedandEPA’sstatedconcerns,ifany,wereaddressed.TheplanusesinformationprovidedbytheSANDAG,SDCAPCD,andCARB.StaffconsultedwithSANDAGduringplanpreparationsbecauseSANDAGprovidesvehicleactivitydataneededfortheMVEBsintheplandevelopment,andtheplansetsMVEBsthatSANDAGwillhavetomeetwhenapprovingfuturetransportatioiplans.TheSDCAPCDconductedinteragencyconsultationontheproposedMVEBswiththeSanDiegoRegionConformityWorkingGroupatitsSeptember5.2012,meetingpursuanttoCFR,Title40,Part93.TheSanDiegoRegionConformityWorkingGroupprovidesfederalinteragencycoordinationforthetransportation/airqualityconformityprocess.TheCWGiscomprisedofstaffrepresentativesfromSANDAG.SDCAPCD,Caltrans,theCARB.theU.S.DepartmentofTransportation.andtheUSEPA.AworkshoponSanDiegoplanwasheldonSeptember28.2012.Aworkshopnoticewasdistributedtoalle-mailsubscribers,localEconomicDevelopmentCorporationsandChambersofCommerce.theUSEPA,CARB.andotherinterestedparties.Sec.93.118(e)(4)(ii)YSec.93.1l8(e)(4)(iii)ThemotorvehicleemissionYSection5.3oftheSanDiegoplan.TransportationCon/brinityBudgets.budget(s)isclearlyidentifiedandclearlyidentifiestheMVEBsandtheinformationused,includingpreciselyquantified.references,todeveloptheMVEBs.Sec.93.1l8(e)(4)(iv)ThemotorvehicleemissionsYEPAhasdeterminedthattheMVEBs.whenconsideredtogetherwithallbudget(s).whenconsideredtogetherotheremissionsources,areconsistentwithapplicablerequirementsforwithallotheremissionsources,ismaintenanceofthe1997ozonestandard.TheMVEBsareconsistentwithconsistentwithapplicableinventoryestimatesusedtodemonstratecontinuedmaintenance.TherequirementsforreasonablefurtherMVEBsincludeasmallsafetymarginbyroundinguptothenextwholeprogress.attainment,ormaintenancenumberandadding2tonsperday.(whicheverisrelevanttothegivenplan).Sec. 93.1 1 8(e)(4)(v) The plan shows a clear relationship Y Emissions inventory estimates are docuniented in Section 4.0

among

the emissions budget(s). .4itain,nent Doe to Pernicinent. Enforceable Enussiuns Reductions. 5. I—

control

measures and the total -lttainincnt Inuenlori. and Appendix A— Projected Emissions Inventories

emissions

inventory, of the plan. and the control measures are documented in 5.2—

1

llainteiucince Demonstration and Appendix B— District, State, and

Federal Emission Control Programs of the plan. The documentation in

these

portions of the plan clearly shows the relationship among the

inventories, control measures, and MVEBs. The MVEBs are consistent

with

the control measures, inventory estimates, and downward trend in

emissions

used to demonstrate continued maintenance.

Sec. 93.1 18(e)(4)(vi) Revisions to previously submitted Y San Diego’s 2007 8-hour attainment plan included MVEBs of53 and 98

control

strategy or maintenance plans tpd for VOC and NO. respectively, for 2008. EPA found the MVEBs in

explain

and document any changes to the 2007 8-hoLir attainment plan adequate for the purposes of

any

previous submitted budgets and transportation conformity. See 73 FR 30098 (May 23, 2008). Emission

control measures; impacts on point reductions from fed&al. State. and local measures are reflected in the

and

area source emissions: any signiflcantl lower MVEBs for 2020 and 2025 in the San Diego plan.

changes to established safety margins Emissions inventory estimates in Section 4.0— Attainment Due to

(see

§93.101 for definition), and Peuinanent, Ei/orceahle Enussions Reductions. 5.1 —Attainment

reasons

for the changes (including Inventory, and Appendix A— Projected Emissions Inventories and the

the

basis for any changes to emission control measures in 5.2— Maintenance Demonstration and Appendix B—

factors

or estimates of VMT. District, State, and Federal Emission Control Programs document the

resulting emission reductions from the attainment strategies developed for

the

San Diego area.

Sec.

93.118(e)(5) EPA has reviewed the State’s Y We have reviewed the comments and responses from SDCAPCD’s

compilation

of public comments and September28, 2012 workshop. The comments and responses from the

response

to comments that are September28. 2012 workshop are summarized in the Workshop Report

reqLured to be submitted withany included as attachment C of SDCAPCD’s submittal package in the

implementation

plan. State’s SIP submittal. SDCAPCD did not receive any comments or

opposition

at their December 5. 2012 public hearing. No comments were

received

or opposition expressed at CARB’s December 6, 2012 public

hearing.