UNITEDSTATESENVIRONMENTALPROTECTIONAGENCYREGION7MEMORANDUM11201RennerBoulevardLenexa,Kansas66219MAY212015SUBJECT:TechnicalSupportDocumentforApprovaltotheIowaStateImplementationPlan(SIP);GrainVacuuming BestManagementPractices(BMPs)andRescissionRuleFROM:HeatherAWMD/APDB/CP-PS4"elf5TO:IA-169&IA-170THRU:MichaelJay,ChiefAWMD/APDB/AtPSJoshuaTappAWMD/APDBTherevisionsinthisSIPactionarefromtwoseparatesubmissionsfromtheIowaDepartmentofNaturalResources(IDNR)andareamendingBMPsforgrainvacuumingoperationsatGroup1grainelevators(IA-169),revisingdefinitions,revising requirementsforDepartmentforms,andrescindingrulerequirementsandreferencesforconditionalpermits(IA-170).Tableswiththerulemakingtimelinesareonpage3ofthisdocument.ThefollowingChapterswillberevisedwiththisaction:IowaAdministrativeCode,Chapter20,"ScopeofTitle-Definitions-Fonns-RulesofPractice,"Chapters22,"ControllingPollution,"Chapter31,"NonattainrnentAreas,"andChapter33,"SpecialRegulationsandConstructionPermitRequirementsforMajorStationarySources-PreventionofSignificantDeterioration(PSD)ofAirQuality."Submission1:OnNovember20,2014,IDNRsubmittedaSIPrevisionto22.10(3)"a"(2),torevisetheBMPsforGroup1grainelevatorstoincludegrainvacuumingoperations.Group1grainelevatorsarecountrygrainelevators,countrygrainterminalelevators,orgrainterminalelevatorswiththepotentialtoemitlessthan15tonsofPM10peryear.ExistingGroup1facilitiesarethosethatcommencedconstructionorreconstructionbeforeFebruary6,2008;newfacilitiesarethosethatcommencedconstructionafterFebruary6,2008.PrintedonRecycledPaper22.10(3)"a"(2):Bestmanagementpractices(BMP).TheowneroroperatorofaGroup1facilityshallimplementbestmanagementpractices(BMP)forcontrollingairpollutionatthefacilityandforlimitingfugitivedustatthefacilityfromcrossingthepropertyline.TheowneroroperatorshallimplementBMPaccordingtothedepartmentmanual,BestManagementPractices(BMP)forGrainElevators(December2007,revisedJuly15,2014),asadoptedbythecommissiononJanuary15,2008,andJuly15,2014,andadoptedbyreferenceherein(availablefrom thedepartment,uponrequest,andonthedepartment'sInternetWebsiteJNolaterthanMarch31,2009,theowneroroperatorofanexistingGroup1facilityshallfullyimplementapplicableBMP,exceptthatBMPsforgrainvacuumingoperationsshallbefullyimplementednolaterthanSeptember10,2014.Uponstartupofequipmentatthefacility,theowneroroperatorofanewGroup1facilityshallfullyimplementapplicableBMP.Additionalbackgroundinformationforthisrulerevisionisincludedonpages3thru5oftheNovember10,2014,submission.TherevisedBMPswereincludedinthesubmissiontoincludegrainvacuumingoperations,aswellasrecordingrequirements.Submission2:OnApril24,2015,IDNRsubmittedaSIPrevisiontorevisethedefinitionofvolatileorganiccompounds(VOC)in567lACChapters20and33,torescindunnecessaryrules,andupdateotherrulestoreduceregulatoryrequirements.20.2(definitions):"Volatileorganiccompounds"or"VOC"meansanycompoundincludedinthedefinitionof"volatileorganiccompounds"foundat40CFR51.100(s)asamendedthroughJanuary21,2-009-March27.2014.20.3-Airqualityformsgenerally:Withthisrulemaking,thissectionhasbeenrescindedandreservedtoeliminateobsoleteandduplicativereferencestoairqualityforms.ConditionalpermitswereaddedtotheIowaCodeinthe1970stofacilitateelectricutilityratesetting.TheIowaUtilitiesBoardchangedtheratesettingrequirementssothatconditionalpermitswerenotneeded.TheDepartmenthasnorecordofissuingaconditionalpermittoanelectricfacility;therefore,referencestoconditionalpermitshavebeenremovedfromthefollowing:22.1(1)Permitrequired;22.1(3)Constructionpermits;22.2(2)Publicnoticeandparticipation;22.2(3)Finalnotice;22.3(1)Stationarysourcesotherthananaerobiclagoons(introductoryparagraph);22.3(3)(Conditionsofapproval)"g",and22.3(4)"a".22.1(4)ConditionalPermits,and22.3(3)ConditionsofApproval,"d"whichdescribesthesubmittalrequirementsofconditionalpermitshavebeenrescindedintheirentiretyandreserved.TherevisiontoChapter31(SpecialrequirementsfornonattainmentareasdesignatedbeforeMay18,1998)removesthereferencetoconditionalpermitsat31.20(1)"m"-"Enforceablepermitcondition."RevisionstoChapter33(Specialconstructionpermitrequirementsformajorstationarysourcesinareasdesignatedattainmentorunclassified(PSD))at33.3removesreferencestoconditionalpermitsinthedefinitionsof"Enforceablepermitcondition,"andrevisesthedefinitionof"volatileorganiccompounds,"consistentwiththerevisionat20.2.2

# Submission

1:

Record

of Rulemaking Iowa Department

ofNatural

Resources Notice

of Intended

Action

May 14,2014 Public Hearing

June

16, 2014 Effective

date

of regulations

September

1 0, 2014 Rule package

received

by EPA

November

20,2014 Completeness

determination

January

20, 2015 

# Submission

2:

Record ofRulemaking Iowa

De

p artment ofNatural

Resources Notice

of Intended

Action

December

24, 2014 P ublic Hearin

g

Janu

ary 26,2015 Effective

date

of

re gu lations

A

p ril 22, 2015 Rule

p acka

g

e received

b

y EPA

Ma

y

4, 2015 Com

p leteness determination

May

5, 2015 

# 3