Final StanislausGHG short clean · Refrigerants/High GWP Gases.....2‐16 Chapter 3 Methods ... (MT...
Transcript of Final StanislausGHG short clean · Refrigerants/High GWP Gases.....2‐16 Chapter 3 Methods ... (MT...
STANISLAUS COUNTYWIDE REGIONAL COMMUNITY GREENHOUSE GAS INVENTORY
P R E P A R E D F O R :
StanislausCounty
101010thStreet,Suite3400
Modesto,CA95354
Contact:KristinC.Doud
209.525.6330
P R E P A R E D B Y :
ICFInternational
620FolsomStreet,Suite200
SanFrancisco,CA94105
Contact:RichWalter
415.677.7100
July2013
ThisprojectwasfundedwithagrantfromtheCaliforniaStrategicGrowthCouncil
ICFInternational.2013.StanislausCountyRegionalCommunityGreenhouseGasInventory.July(ICF00203.10)SanFrancisco,CA.PreparedforStanislausCounty,Modesto,CA.
StanislausCounty CityofModesto
CityofHughson CityofCeres
CityofNewman CityofOakdale
CityofPatterson CityofRiverbank
CityofTurlock CityofWaterford
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Contents
List of Tables ......................................................................................................................................... iii
List of Figures ......................................................................................................................................... iv
List of Acronyms and Abbreviations ....................................................................................................... v
Page
Executive Summary ............................................................................................................................ vii
Study Purpose ....................................................................................................................................... vii
Regional Emissions by Sector ............................................................................................................... vii
Chapter 1 Background .............................................................................................................. 1‐1
Greenhouse Gas Definitions ................................................................................................................ 1‐1
Greenhouse Gas Emissions and Planning in the United States and California ................................... 1‐3
National and State Level Inventories ............................................................................................ 1‐3
National and State Legislation ...................................................................................................... 1‐5
Local Level Planning .................................................................................................................... 1‐10
Overview of Stanislaus County ................................................................................................... 1‐12
Chapter 2 Sector Summaries .................................................................................................... 2‐1
Agriculture ........................................................................................................................................... 2‐2
Building Energy .................................................................................................................................... 2‐6
On‐Road Transportation ...................................................................................................................... 2‐7
Off‐Road Transportation ..................................................................................................................... 2‐9
Stationary Sources ............................................................................................................................. 2‐11
Waste ................................................................................................................................................. 2‐11
Water ................................................................................................................................................. 2‐13
Wastewater ....................................................................................................................................... 2‐15
Refrigerants/High GWP Gases ........................................................................................................... 2‐16
Chapter 3 Methods ................................................................................................................... 3‐1
Agriculture ........................................................................................................................................... 3‐1
What the Sector Includes .............................................................................................................. 3‐1
Methodology ................................................................................................................................. 3‐1
Data Sources ................................................................................................................................. 3‐2
Building Energy .................................................................................................................................... 3‐2
What the Sector Includes .............................................................................................................. 3‐2
Methodology ................................................................................................................................. 3‐2
Data Sources ................................................................................................................................. 3‐3
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Landfill Sites ......................................................................................................................................... 3‐3
What the Sector Includes .............................................................................................................. 3‐3
Methodology ................................................................................................................................. 3‐3
Data Sources ................................................................................................................................. 3‐4
Off‐Road Transportation ..................................................................................................................... 3‐4
What the Sector Includes .............................................................................................................. 3‐4
Methodology ................................................................................................................................. 3‐4
Data Sources ................................................................................................................................. 3‐4
On‐Road Transportation ...................................................................................................................... 3‐4
What the Sector Includes .............................................................................................................. 3‐4
Methodology ................................................................................................................................. 3‐5
Data Sources ................................................................................................................................. 3‐5
Refrigerants/ High GWP gases ............................................................................................................ 3‐5
What the Sector Includes .............................................................................................................. 3‐5
Methodology ................................................................................................................................. 3‐6
Data Sources ................................................................................................................................. 3‐6
Stationary Sources ............................................................................................................................... 3‐6
What the Sector Includes .............................................................................................................. 3‐6
Methodology ................................................................................................................................. 3‐6
Data Sources ................................................................................................................................. 3‐6
Waste Generation ............................................................................................................................... 3‐7
What the Sector Includes .............................................................................................................. 3‐7
Methodology ................................................................................................................................. 3‐7
Data Sources ................................................................................................................................. 3‐7
Wastewater Treatment ....................................................................................................................... 3‐7
What the sector includes .............................................................................................................. 3‐7
Methodology ................................................................................................................................. 3‐7
Data Sources ................................................................................................................................. 3‐8
Water ................................................................................................................................................... 3‐8
What the sector includes .............................................................................................................. 3‐8
Methodology ................................................................................................................................. 3‐8
Data Sources ................................................................................................................................. 3‐9
Chapter 4 References ............................................................................................................... 4‐1
Printed References .............................................................................................................................. 4‐1
Personal Communications ................................................................................................................... 4‐4
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Tables
Page
ES‐1 2005 GHG Emissions Inventory for the Stanislaus County Region (MT CO2e) .................. viii
ES‐2 Socioeconomic Data For All Participating Jurisdictions in 2005 ......................................... x
1‐1a United States GHG Inventory in 2005 .............................................................................. 1‐5
1‐1b California GHG Inventory in 2005 .................................................................................... 1‐5
1‐2 Summary of Key Federal and State Legislation and Regulations ..................................... 1‐6
1‐3 Socioeconomic Data for All Participating Jurisdictions in 2005 ..................................... 1‐12
2‐1 2005 GHG Emissions Inventory for the Stanislaus County Region (MT CO2e) ................. 2‐1
2‐2 GHG Emissions from Agriculture Sources in 2005 (MT CO2e) ......................................... 2‐3
2‐3 Stanislaus Agriculture Emissions Compared to Other California Agriculture
Producing Counties .......................................................................................................... 2‐5
2‐4 Building Energy Consumption—Residential and Commercial/Industrial
Electricity and Natural Gas in 2005 .................................................................................. 2‐6
2‐5 Regional VMT and GHG Emissions by Speed Bin ............................................................. 2‐8
2‐6 Regional GHG Emissions Due to Off‐Road Equipment in 2005 by Equipment
Type................................................................................................................................ 2‐10
2‐7 Waste Generation by Waste Type (Tons) ...................................................................... 2‐12
2‐8 Water Consumption by End User Sector in 2005 (Agriculture,
Commercial/Industrial, Residential) .............................................................................. 2‐14
2‐9 Water Sources for the Region and Associated Energy Intensity (kwh/MG) .................. 2‐14
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Figures
Page
ES‐1 2005 GHG Emissions Inventory for the Stanislaus County Region
(MT CO2e)—Sector View ..................................................................................................... ix
ES‐2 Per Capita Emissions (Excluding Agriculture) Compared to Other
Jurisdictions ........................................................................................................................ xi
1‐1 United States and California GHG Inventories in 2005 .................................................... 1‐4
1‐2 GHG Related Legislation, Regulation, and Executive Orders ........................................... 1‐9
2‐1 GHG Emissions Inventory for the Stanislaus County Region (MT CO2e) .......................... 2‐2
2‐2 GHG Emissions from Agriculture Sources in 2005 (MT CO2e) ......................................... 2‐4
2‐3 Comparison of Stanislaus GHG Emissions from Agriculture to National and
State Level Agriculture Emissions ................................................................................... 2‐5
2‐4 Proportion of Regional GHG Emissions in the Building Energy Sector Due to
Electricity and Natural Gas Use by Various End Users (MT CO2e) ................................... 2‐7
2‐5 Regional GHG Emissions by Speed Bin in 2005 (MT CO2) ................................................ 2‐9
2‐6 GHG Emissions Due to Off‐Road Equipment in 2005 from Various Off‐Road
Equipment Types ........................................................................................................... 2‐10
2‐7 Regional GHG Emissions by Waste Type (MT CO2e) ...................................................... 2‐13
2‐8 Water Consumption by End User Sector in 2005 (Agriculture,
Commercial/Industrial, Residential) .............................................................................. 2‐14
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Acronyms and Abbreviations
AB AssemblyBillAR4 IPCCFourthAssessmentReport CAA CleanAirActCAFE CorporateAverageFuelEconomyCal/EPA CaliforniaEnvironmentalProtectionAgencyCAP ClimateActionPlanCARB CaliforniaAirResourcesBoardCCA CommunityChoiceAggregationCEC CaliforniaEnergyCommissionCEQA CaliforniaEnvironmentalQualityActCFCs chlorofluorocarbonsCH4 methaneCO2 carbondioxideCPUC CaliforniaPublicUtilitiesCommission EO ExecutiveOrderEPA U.S.EnvironmentalProtectionAgencyESPs energyserviceproviders FED FunctionalEquivalentDocument GHG greenhousegasGWP globalwarmingpotential HCFCs hydrochlorofluorocarbonsHFCs hydrofluorocarbons IOUs investor‐ownedutilitiesIPCC IntergovernmentalPanelonClimateChange LAFCO LocalAgencyFormationCommissionLCFS LowCarbonFuelStandardLGOP LocalGovernmentOperationsProtocol MCAP municipalclimateactionplanMID ModestoIrrigationDistrictmph milesperhourMPOs metropolitanplanningorganizations
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MSR MunicipalServiceReviewMTCO2e metrictoncarbondioxideequivalentMW megawatt N2O nitrousoxideNGOs non‐governmentalorganizationsNSPS NewSourcePerformanceStandards O3 ozone PFCs perfluorocarbonsPG&E PacificGasandElectricPUR PesticideUseReport RPS RenewablePortfolioStandardRST RegionalSustainabilityToolboxRTAC RegionalTargetsAdvisoryCommitteeRTPs RegionalTransportationPlans SAR SecondAssessmentReportSB SenateBillSCAG SouthernCaliforniaAssociationofGovernmentsSCRSWPA StanislausCountyRegionalSolidWastePlanningAgencySF6 sulfurhexafluorideSGC StateofCaliforniaStrategicGrowthCouncilSJVAPCD SanJoaquinValleyAirPollutionControlDistrictSP servicepopulation TDM TravelDemandModelTID TurlockIrrigationDistrict UNFCCC UnitedNationsFrameworkConventiononClimateChangeUSGS UnitedStatesGeologicalSurveyUWMP UrbanWaterManagementPlan VMT vehiclemilestraveled WARM WasteReductionModelWMO WorldMeteorologicalOrganizationWWTPs wastewatertreatmentplants
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Executive Summary
Study Purpose TheStanislausRegionalGHGInventoryProjectwascompletedaspartoftheStanislausCountyRegionalSustainabilityToolbox(RST),agroupofinitiativesfundedthroughtheStateofCaliforniaStrategicGrowthCouncil(SGC).TheproposalwassubmittedcollaborativelybyStanislausCounty(leadjurisdiction),andtheCitiesofCeres,Hughson,Modesto,Newman,Oakdale,Patterson,Riverbank,TurlockandWaterford.TheSGCgrantcontainsthefollowingrequirements:
ConsistencywithStatePlanningPriorities—thegoaloftheStanislausCountyRSTistoprovidealocallydrivensetoftoolsthatareconsistentwithregional,state,andfederalgoalsandstandards.TheStanislausCountyRSTisintendedtofitstate,regionalandfederalsustainabilitygoals,blueprintplansandGHGreductionthresholdsintoalocallyrelevantsetting.
ReductionofGreenhouseGases—theintentionoftheRSTistoidentifylocallyspecific,measurableactionsthatallowseachjurisdictiontomeetorpreferablyexceedStatewidegreenhousegas(GHG)reductiongoals.Assuch,acentralcomponentoftheRSTistoestablishabaselineGHGinventoryfortheentirecounty.
Collaboration—thetoolkitapproachallowsplanningeffortstobebothlocallyappropriatewhilealsobeingregionallyconsistent.TheRSTisintendedtobetheimplementationtoolforseveralregionalplanningeffortsincluding:StanCOG’sRegionalTransportationPlan,theValleyBlueprint,theSustainableCommunitiesStrategy,andtheCaliforniaPartnershipfortheSanJoaquinValley.TheproposalincludescollaborationwiththeGreatValleyCenter,CaliforniaStateUniversityStanislaus,LocalAgencyFormationCommission(LAFCO),ICLEI–LocalGovernmentsforSustainability,StanislausCountyHealthServicesAgencyandStanislausCountyAsthmaCoalition.
Thisreportprovidesthequantification(intermsofcarbondioxideequivalent[CO2e])ofGHGcommunityemissionsforthecountyasawholefortheyear2005.Usingthemethodologyfortheregionalinventory,separateGHGcommunityinventorieswerepreparedforeachjurisdictioninthecountyandprovidedtotheindividualcitiesandtheunincorporatedcountyfortheiruse.
ThisstudyisnotaGHGreductionplandoesitquantifyGHGreductions.ThisstudyisabaselineGHGinventoryonly.
Regional Emissions by Sector TotalGHGemissionsin2005fromtheStanislausCountyRegion(combinedemissionsfromthenineincorporatedcitiesandtheCounty),referredtointhisreportas“theregion”were6,042,232metrictonsofcarbondioxideequivalent(MTCO2e).Additionalemissionsarisefromstationarysourcesandlandfillsites(658,692MTCO2e).Stationarysourceemissions,whilequantifiedanddisclosed,werenotincludedintheregionaltotalbecausetheyareregulatedbystateandfederalmandates.Landfillemissionsfor2005,whilequantifiedanddisclosed,werenotincludedintheregionaltotalinordertoavoiddouble‐countingofwastesectoremissionsfor2005asemissionsforthissectorwere
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quantifiedbasedon2005wastegenerationinstead.GHGemissionsfortheregionareshownintableES‐1andFigureES‐1.TableES‐1andFigureES‐1representtheregion’sbaselineGHGinventoryfortheyear2005.ThelargestsourcesofGHGemissionsintheregionareBuildingEnergy(ElectricityplusNaturalGas),On‐RoadTransportationandAgriculture.
Table ES‐1. 2005 GHG Emissions Inventory for the Stanislaus County Region (MT CO2e)
Sector Emissions Percent
Directa
Agriculture—LivestockEmissions 1,113,647 18%
Agriculture—OtherEmissions 340,767 6%
BuildingEnergy—NaturalGas 973,386 16%
Off‐RoadTransportation 134,546 2%
On‐RoadTransportation 1,636,983 27%
HighGWP/Refrigerants 364,473 6%
Indirectb BuildingEnergy—Electricity 1,380,477 23%
WasteGeneration 49,667 0.8%
WastewaterTreatment 17,899 0.3%
Water 32,267 0.5%
Total 6,044,113 100%
Excluded
c
StationarySources 642,576
WasteLandfill 16,115
a. Directemissionsareemissionsthatphysicallyoccurwithintheinventoryboundary;seeChapter1fordetail.
b. IndirectemissionsareduetoactivitythatoccurswithintheinventoryboundaryalthoughtheGHGemissionmayhappeninsideoroutsidetheinventoryboundary;seeChapter1fordetail.
c. Stationarysourceemissionswereexcludedduetostateandfederalregulationofthesesources.Landfillemissionswereexcludedtoavoiddouble‐countingwithwastegenerationemissions.
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Figure ES‐1. 2005 GHG Emissions Inventory for the Stanislaus County Region (MT CO2e)—Sector View
GHGemissionsintheregionaretheresultofdailyactivitiesofresidents,employees,businesses,farmsandindustryintheregion.AGHGinventoryreflectstheuniqueclimate,characterandeconomyofaparticularregion.Population,housingandemploymentforallparticipatingjurisdictionsin2005areshowninTableES‐2.TheSTANCOGTravelDemandModel(TDM)wasusedtoestimatesocioeconomicdatabecauseitrepresentsaconsistentsourceofdatabetweenalljurisdictionsandresultedinestimatesthataresimilartosocioeconomicdatafromothersources.Therearedifferingsocioeconomicdataestimatesfromdifferentsources,buttheTDMresultsareclosetotheseotherestimates.ThesocioeconomicdatainTableES‐2representthehouseholds,population,andjobswithineachjurisdiction’sgeographicalboundaries.Sphereofinfluenceboundarieswerenottakenintoconsiderationforthesocioeconomicdataestimates.
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Table ES‐2. Socioeconomic Data For All Participating Jurisdictions in 2005
Jurisdiction Households Population Employment
Ceres 12,639 40,722 8,402
Hughson 1,915 6,091 749
Modesto 73,489 206,962 78,310
Newman 3,091 10,083 1,056
Oakdale 7,496 20,299 6,005
Patterson 5,414 19,167 2,273
Riverbank 6,477 21,417 3,452
Turlock 23,074 67,510 23,738
Waterford 2,447 8,169 476
UnincorporatedCounty 36,730 113,740 47,521
TotalStanislausCounty 172,772 514,160 171,982
Source:StanCOG2005asreportedbyFehr&Peers2012
Thejurisdictionsintheregionareconnectedeconomically,logisticallyandsocially.ThusexaminingGHGemissionsfortheregionasawhole,asthisdocumentdoes,isadvantageous.ForcertainaspectsofGHGreductionplanning,individualjurisdictionsmightopttopursueprogramsorpoliciesuniquetotheircommunity,butforothers,severalcommunitiesorallcommunitiesmayopttopursueprogramsandpoliciestogether.
FigureES‐2showspercapitaemissionsfortheStanislausregioncomparedtothestateaveragein2005andseveralotherjurisdictions.Ingeneral,percapitaemissionsintheStanislausregionwereverysimilartotherestofCaliforniain2005.EmissionstrendsspecifictoeachsectorarediscussedinChapters2.
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Figure ES‐2. Per Capita Emissions (Excluding Agriculture) Compared to Other Jurisdictions
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Chapter 1 Background
TheStanislausCountyRegionalGreenhouseGasInventoryProjectcompletedabaselinegreenhousegas(GHG)inventoryfortheentirecountyfortheyear2005.1AGHGinventoryiscommonlycompletedbyanentityseekingtobetterunderstandthesources,magnitude,andtrendsinGHGemissions.Commonentitiesincludenations,states,localgovernments,publicorganizationssuchasuniversitiesorajointpowersauthority,oraprivatecorporationorfacility(e.g.,asingleoilrefinery).AGHGinventorymayservethepurposesofregulatorycompliance,basicresearch,purchaseorsaleofGHGcreditsonthevoluntarymarket,orasabaselineformeasuringtheachievementsofvoluntaryorrequiredsustainabilitypractices.
StandardprotocolsexistforconductingGHGinventoriesatallscales.RulesandproceduresforGHGinventorieshavebeendevelopedbyavarietyofgovernmentandnon‐governmententitiesincludingtheIntergovernmentalPanelonClimateChangeorIPCC(apartoftheWorldMeteorologicalOrganizationorWMO),theU.S.EnvironmentalProtectionAgency(EPA),theCaliforniaAirResourcesBoard(CARB),theSanJoaquinValleyAirPollutionControlDistrict(SJVAPCD),theWorldResourcesInstitute,theCaliforniaClimateRegistry,ICLEI—LocalGovernmentsforSustainability,theAssociationofEnvironmentalProfessionalsandothers.
Priorto2006whenthestateofCaliforniapassedAssemblyBill(AB)32,themajorityofCaliforniacitiesandcountieshadnotcompletedaGHGinventory.Assuch,GHGreductionplanningatthelocalleveliscloselylinkedtostatelevelGHGplanningthathasoccurredsince2006.Further,manycommunities,includingthoseinStanislausCounty,arecompletingaGHGinventoryforthefirsttimeandfamiliarizingthemselveswiththeprocess.
ThissectionprovidesdefinitionsofcommontermsusedintheGHGinventoryprocess,abriefhistoryofGHGplanninginCalifornia,adescriptionoftheco‐benefitstypicallyassociatedwithGHGplanningandanoverviewofStanislausCounty.
Greenhouse Gas Definitions GreenhouseGas—AGHGisanygasthatabsorbsinfraredradiationintheatmosphere.GHGsinclude,butarenotlimitedto,watervapor,carbondioxide(CO2),methane(CH4),nitrousoxide(N2O),hydrochlorofluorocarbons(HCFCs),ozone(O3),hydrofluorocarbons(HFCs),perfluorocarbons(PFCs),andsulfurhexafluoride(SF6).Ofthese,allbutwatervaporandO3areregulatedunderAB32andaccountedforinthestate’sGHGinventory.
CommunityGHGInventory—AcommunityinventoryincludesGHGemissionsassociatedwiththeactivitiesofthecommunityasawhole,includingresidents,businesses,andthemunicipal
1GHGcommunityinventoriesfortheindividualjurisdictionsintheCountywerealsopreparedaspartofthisproject.Thecommunityinventorieswereprovidedseparatelytothejurisdictionsfortheiruse.
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governmentoperations.2Forexample,acommunityGHGinventoryincludesemissionsduetoenergyusedtopowerandheathomesandbusinesses;fuelusedbyvehiclesthathaveeitheranoriginordestinationwithinthejurisdiction;wastethatisgeneratedbyresidentsandbusinessesinthejurisdictionandsenttolandfills;fueluseatlargestationarysourcessuchasfactoriesorindustrialfacilities;livestockandfertilizeruse;fuelusebyoff‐roadequipment;andothers.
MunicipalGHGInventory—AmunicipalinventoryincludesGHGemissionsassociatedwithaCityorCounty’sservicesandmunicipaloperations.Forexample,amunicipalGHGInventoryincludesemissionsduetothefollowing:energyusedbyCityorCountybuildingssuchasthecourthouse,cityhallorthejail;fuelusedbytheCityorCountyvehiclefleet;wastegeneratedbytheCityandCountyemployees;processemissionsassociatedwithtreatingwastewateriftheCityorCountyoperatesaplant;fugitiveemissionsofmethanefromlandfillsiftheCityorCountyoperatesalandfill;andfuelusebyCityandCountyemployeescommutingtoandfromwork.TheGHGemissionsassociatedwithaCityorCounty’smunicipaloperationsaretypically1to5%ofthecommunity’semissionsasawhole.
UnitofMeasure—TheunitofmeasureusedthroughoutthisGHGinventoryisthemetrictonofCO2equivalent,abbreviatedasMTCO2e.Thisistheinternationalunitthatcombinesthedifferingimpactsofallgreenhousegasesintoasingleunit,bymultiplyingeachemittedgasbyitsglobalwarmingpotential(GWP).GWPisthemeasureofhoweffectiveagreenhousegasisattrappingheatintheearth’satmosphere.GWPcomparestherelativewarmingeffectoftheGHGinquestiontothatofcarbondioxide.3
Boundary—AGHGinventoryrepresentsemissionsduetoactivitiesassociatedwithacertainboundary.Thisboundarycanbeorganizational,operationalorgeographic.Theseboundariesdeterminewhichemissionsareaccountedforandreportedbytheentity.
DirectEmissions—DirectemissionsincludedirectreleasesofGHGsthatphysicallyoccurwithintheboundaryandarerelatedtofuelcombustion,processemissionsorfugitiveemissions.Forexample,thecombustionoffuelbyvehiclesdrivingwithintheboundary,thecombustionofnaturalgasorotherfuelbyindustriesorfacilitieswithintheboundaryorthereleaseofmethanefromlivestockphysicallylocatedwithinajurisdiction.4
IndirectEmissions—IndirectreleasesofGHGs.IndirectreleasesareGHGemissionsthatresultfromactivitythatoccurswithintheboundarybutthephysicalreleaseoftheGHGemissionoccursoutsideoftheboundary.Forexample,residentsandbusinesseswithinthecountyuseelectricitybyturningonlightsorotherelectronicequipmentbutthepowerplantwheretheelectricityisgenerated,andwherefuelisburnedtogeneratetheelectricity,maybelocatedfarawayfromthecounty.Electricityuseisconsideredanindirectemission.
2Municipalgovernmentemissionsareincludedintheregionalcommunityinventorywhentheemissionsoccurwithinthecountyboundaryoverall.Sometimesmunicipalgovernmentemissionsdonotoccurwithinthecommunityboundary.3TheGWPofCO2is,bydefinition,one(1).TheGWPvaluesusedinthisreportarebasedontheIPCCSecondAssessmentReport(SAR)andUnitedNationsFrameworkConventiononClimateChange(UNFCCC)reportingguidelinesandareasfollows:CO2=1,Methane(CH4)=21,NitrousOxide(N2O)=310,SulfurHexaflouride(SF6)=23,600(IPCC1996;UNFCCC2006).AlthoughtheIPCCFourthAssessmentReport(AR4)presentsdifferentGWPestimates,thecurrentinventorystandardreliesonSARGWPstocomplywithreportingstandardsandconsistencywithregionalandnationalinventories(IntergovernmentalPanelonClimateChange2007).4BiogenicCO2emissionsareexcludedfromtheinventoryastheydonotresultinnetatmosphericincreasesinCO2.
Stanislaus County Background
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ExcludedEmission—Inthisreport,twosourceswerequantifiedbutnotincludedintheregionaltotals.Stationarysourceemissionswereexcludedduetostateandfederalregulationandcontroloverthesesources.Landfillemissionsfor2005duetohistoricalwastegenerationwereexcludedbecauseemissionsassociatedwith2005wastegenerationwereconsideredforappropriatetoincludeasameasureof2005activity.
EmissionsSector—AnemissionssectorisacategoryofGHGemissionsreflectingthenatureoftheactivityproducingtheGHGemissions,forexamplebuildingenergyoron‐roadtransportation.GHGemissionssectorsincludedinthisinventoryare:agriculture,buildingenergy,off‐roadtransportation,on‐roadtransportation,highglobalwarmingpotentialgases(refrigerants),wastelandfills,wastegeneration,wastewatertreatment,waterconsumptionandstationarysources.
EmissionFactor—AnemissionfactorisauniquevalueequatingtheamountofGHGsemittedperunitofagivenactivity,forexamplemetrictonsofCO2pergallonofgasolineburned.
BaselineYear—Thebaselineyearforanyentityisthefirstyearforwhichemissionsareinventoriedandreported.Forthisinventory,thebaselineyearis2005.
ClimateActionPlan(CAP)/GreenhouseGasReductionPlan—“ClimateActionPlan”isatermcommonlyusedinCaliforniaforaplanningdocumentdesignedtoreduceanentity’sGHGemissionsoveraperiodoftime.Somecommunitiesusedifferenttermssuchasa“GreenhouseGasReductionPlan.”ThespecificcomponentsofaGHGreductionplanarenotrequiredbylaworarticulatedinCaliforniaGHGlegislation.However,airdistrictsandotheragenciessuchasICLEIhaveproducedguidanceforwhatshouldbeincludedinaGHGreductionplan.Inaddition,CEQAguidelinesadoptedin2010describeelementsrequiredinGHGreductionplansifajurisdictionintendstotierCEQAprojectcomplianceoffajurisdictionalreductionplan.GHGreductionplanstypicallyinclude:abaselineGHGinventory,aprojectionofGHGemissionsto2020(orotherfutureyears),aGHGreductiontargetfor2020(orotherfutureyears),GHGreductionstrategiesthattogetherachievethetarget,implementationactions,monitoringrequirements,andadaptivestepstobetakentoensurethejurisdictionmeetsitsidentifiedtarget.
Greenhouse Gas Emissions and Planning in the United States and California
National and State Level Inventories
EPAcompletesaGHGinventoryeachyearfortheUnitedStates.GHGinventorydataisavailableforeveryyearbeginningin1990.ThestateofCaliforniaalsocompletesanannualGHGinventoryanddataisavailablebeginningin2000.ThenationalandstateofCaliforniaGHGinventoriesfortheyear2005areshownbelowinFigure1‐1andTable1‐1inunitsofmillionMTCO2e.PleasenotethattheCaliforniaEnergyCommission(CEC)andtheEPApresentinventorydataslightlydifferently.
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Figure 1‐1. United States and California GHG Inventories in 2005
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Table 1‐1a. United States GHG Inventory in 2005
Sector MillionMTCO2e %oftotalnationalemissions
Transportation 2018 28
ElectricPower 2449 34
CommercialandResidentiala 745 10
Industrial 1438 20
Agriculture 496 7
U.S.Territories 58 1
Total 7204 100
Source:U.S.EnvironmentalProtectionAgency2012a. Includesemissionsfromlandfills,wastewatertreatment,on‐sitestationarycombustionsuchas
naturalgasandhighGWPsubstances
Table 1‐1b. California GHG Inventory in 2005
Sector MillionMTCO2e %oftotalstateemissions
Transportation 186 38
ElectricPower 109 23
CommercialandResidential 41 9
Industrial 93 19
RecyclingandWaste 7 1
HighGWP 14 3
Agriculture 33 7
WildfireEmissions <1 <1
Total 483 100
Source:CaliforniaAirResourcesBoard2011a
Fossilfuelsareburnedtocreateelectricitywhichpowershomesandcommercial/industrialbuildings,tocreateheatandtopowerourvehicles.IntheUnitedStates,vehicleemissionsrepresentapproximately28%ofallemissions(U.S.EnvironmentalProtectionAgency2010a).Vehicleemissionsrepresentedapproximately38%ofallGHGsemittedbyCaliforniansin2005.EnergyusedtopowerbuildingsistheotherprimarysourceofGHGsintheUnitedStatesandCalifornia.OthersourcesofGHGemissionsincludeagriculture,landclearing,thedecompositionofwasteinlandfills,refrigerants,andcertainindustrialprocesses.
National and State Legislation
AlthoughthereiscurrentlynofederaloverarchinglawspecificallyrelatedtoclimatechangeortheregulationofGHGs,pursuanttoauthorityundertheCleanAirAct,theUSEPAistakingaleadroleinregulatingcertainspecificemissionssourcesincludingstationarysources.KeylegislativeandregulatoryactionsaresummarizedinTable1‐2.
Stanislaus County Background
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TheStateofCaliforniahasadoptedlegislation,andregulatoryagencieshaveenactedpolicies,addressingvariousaspectsofclimatechangeandGHGemissionsmitigation.Muchofthislegislationandpolicyactivityisnotdirectedatlocaljurisdictionsbutratherestablishesabroadframeworkforthestate’slong‐termGHGmitigationandclimatechangeadaptationprogram.
SummariesofkeyregulationsandlegislationatthefederalandstatelevelsthatarerelevanttotheGHGplanningintheStanislausregionareprovidedinTable1‐2below.Figure1‐2displaysatimelineofkeystateandfederalregulatoryactivity.
Table 1‐2. Summary of Key Federal and State Legislation and Regulations
Federal
Massachusettsetal.vs.U.S.EnvironmentalProtectionAgency(2007)
TwelvestatesandcitiesincludingCalifornia,inconjunctionwithseveralenvironmentalorganizations,suedtoforceEPAtoregulateGHGsasapollutantpursuanttotheCleanAirAct(CAA)inMassachusettsetal.v.EnvironmentalProtectionAgency549US497(2007).Thecourtruledthattheplaintiffshadstandingtosue,GHGsfitwithintheCAA’sdefinitionofapollutant,andtheEPA’sreasonsfornotregulatingGHGswereinsufficientlygroundedintheCAA.
U.S.EnvironmentalProtectionAgencyEndangermentFinding(2009)
Inits“EndangermentFinding,”theAdministratoroftheEPAfoundthatGHGs,asdescribedabove,threatenthepublichealthandwelfareofcurrentandfuturegenerations.TheAdministratoralsofoundthatthecombinedemissionsofthesewell‐mixedGHGsfromnewmotorvehiclesandnewmotorvehicleenginescontributetotheGHGpollutionthatthreatenspublichealthandwelfare.AlthoughtheFindingofEndangermentdoesnotplacerequirementsonindustry,itisanimportantstepinEPA’sprocesstodevelopregulation.ThismeasureisaprerequisitetofinalizingEPA’sproposedGHGemissionstandardsforlight‐dutyvehicles,whichwerejointlyproposedbyEPAandtheDepartmentofTransportation’sNationalHighwaySafetyAdministrationin2009.
U.S.EnvironmentalProtectionAgencyCauseorContributeFinding(2010)
Inits“CauseorContributeFinding”theEPAAdministratorfoundthatthecombinedemissionsofthesewell‐mixedGHGfromnewmotorvehiclesandnewmotorvehicleenginescontributetotheGHGpollutionthatthreatenspublichealthandwelfare.
U.S.EnvironmentalProtectionAgencyMandatoryReportingRuleforGHGs(2009)
Undertherule,suppliersoffossilfuelsorindustrialGHGs,manufacturersofvehiclesandengines,andfacilitiesthatemit25,000MTormoreperyearofGHGsarerequiredtoreportannualemissionstotheEPA.Thefirstannualreportsforthelargestemittingfacilities,coveringcalendaryear2010,weresubmittedtotheEPAin2011.ThemandatoryreportingruledoesnotlimitGHGemissionsbutestablishesastandardframeworkforemissionsreportingandtrackingoflargeemitters.
U.S.EnvironmentalProtectionAgencySettlementAgreementstoAddressGHGEmissionsfromRefineriesandElectricityGeneration(2010)
In2010,theEPAenteredintotwosettlementagreementstoissuerulesthatwilladdressGHGemissionsfromfossilfueledpowerplantsandrefineries.RegulationsonbothtypesoffacilitieswillbecoordinatedwithregulatoryactionontraditionaltypesofpollutantsandpromulgatedthroughtheNewSourcePerformanceStandards(NSPS).TheauthoritytoissueregulationsisundertheCleanAirActasconfirmedbytheU.S.SupremeCourtruling.
UpdatetoCorporateAverageFuelEconomy(CAFE)Standards(2009,2012)
TheCorporateAverageFuelEconomy(CAFE)standardsestablishstricterfueleconomyrequirementsandrequireautomakerstocutGHGemissionsinnewvehiclesbyroughly25%by2016.Newstandardsformodelyears2017–2025wereissuedin2012andwillachieveafleetaveragein2025of54.5milespergallon.
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State
ExecutiveOrderS‐03‐05(2005)
ExecutiveOrder(EO)S‐03‐05establishedthefollowingGHGemissionreductiontargetsforCalifornia’sstateagencies.
By2010,reduceGHGemissionsto2000levels.
By2020,reduceGHGemissionsto1990levels.
By2050,reduceGHGemissionsto80%below1990levels.
Executiveordersarebindingonlyonstateagenciesandnotonlocalgovernmentsorprivateproperties.Accordingly,EOS‐03‐05willguidestateagencies’effortstocontrolandregulateGHGemissionsbutwillhavenodirectbindingeffectonlocalefforts.TheSecretaryoftheCaliforniaEnvironmentalProtectionAgency(Cal/EPA)isrequiredtoreporttotheGovernorandstatelegislaturebiannuallyontheimpactsofglobalwarmingonCalifornia,mitigationandadaptationplans,andprogressmadetowardreducingGHGemissionstomeetthetargetsestablishedinthisexecutiveorder.
AssemblyBill1493—PavleyRules(2002,amendments2009)/AdvancedCleanCars(2012)
Knownas“PavleyI,”AssemblyBill(AB)1493standardswerethenation’sfirstGHGstandardsforautomobiles.AB1493requiredtheCaliforniaAirResourcesBoard(CARB)toadoptvehiclestandardsthatwilllowerGHGemissionsfromnewlightdutyautostothemaximumextentfeasiblebeginningin2009.AdditionalstrengtheningofthePavleystandards(AdvancedCleanCars)wasadoptedforvehiclemodelyears2017–2025.Together,thetwostandardsareexpectedtoincreaseaveragefueleconomytoroughly43mpgby2020andreduceGHGemissionsfromthetransportationsectorinCaliforniabyapproximately14%.ThenewfederalCAFEstandards,describedabove,aretheanalogousnationalpolicy.
SenateBills1078/107andSenateBill1—RenewablePortfolioStandard(2002,2006,2011)
California’sRenewablePortfolioStandard(RPS),obligatesinvestor‐ownedutilities(IOUs),energyserviceproviders(ESPs),andCommunityChoiceAggregations(CCAs)toprocure33%ofretailsalesfromeligiblerenewablesourcesby2020.TheCaliforniaPublicUtilitiesCommission(CPUC)andCECarejointlyresponsibleforimplementingtheprogram.
AssemblyBill32—CaliforniaGlobalWarmingSolutionsAct(2006)
AB32codifiedthestate’sGHGemissionstargetbyrequiringthatthestate’sglobalwarmingemissionsbereducedto1990levelsby2020.Sincebeingadopted,theCARB,CEC,CPUC,andBuildingStandardsCommissionhavebeendevelopingregulationsthatwillhelpmeetthegoalsofAB32andEOS‐03‐05.TheScopingPlanforAB32identifiesspecificmeasurestoreduceGHGemissionsto1990levelsby2020,andrequiresCARBandotherstateagenciestodevelopandenforceregulationsandotherinitiativesforreducingGHGs.Specifically,theScopingPlanarticulatesakeyroleforlocalgovernments,recommendingtheyestablishGHGreductiongoalsforboththeirmunicipaloperationsandthecommunityconsistentwiththoseofthestate(i.e.,approximately15%belowcurrentlevels).
ExecutiveOrderS‐01‐07—LowCarbonFuelStandard(2007)
EOS‐01‐07essentiallymandates:(1)thatastatewidegoalbeestablishedtoreducethecarbonintensityofCalifornia’stransportationfuelsbyatleast10%by2020,and(2)thataLowCarbonFuelStandard(LCFS)fortransportationfuelsbeestablishedinCalifornia.
AssemblyBill939,title27(2009)—LandfillMethaneRegulation
ThisregulationisadiscreteearlyactionGHGreductionmeasure,asdescribedintheCaliforniaGlobalWarmingSolutionsActof2006(AB32;Stats.2006,chapter488).Itwillreducemethaneemissionsfromlandfillsprimarilybyrequiringownersandoperatorsofcertainuncontrolledlandfillstoinstallgascollectionandcontrolsystems,andbyrequiringexistingandnewlyinstalledgascollectionandcontrolsystemstooperateoptimally.
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SenateBill375—SustainableCommunitiesStrategy(2008)
SB375providesforanewplanningprocessthatcoordinateslanduseplanning,regionaltransportationplans,andfundingprioritiesinordertohelpCaliforniameettheGHGreductiongoalsestablishedinAB32.SB375requiresregionaltransportationplans,developedbymetropolitanplanningorganizations(MPOs)toincorporatea“sustainablecommunitiesstrategy”(SCS)intheirRegionalTransportationPlans(RTPs).ThegoaloftheSCSistoreduceregionalvehiclemilestraveled(VMT)throughlanduseplanningandconsequenttransportationpatterns.CARBsetregionalGHGreductiontargetsthatwillfocuseachSCS.TheregionaltargetswerereleasedbyCARBinSeptember2010.SB375alsoincludesprovisionsforstreamlinedCaliforniaEnvironmentalQualityAct(CEQA)reviewforsomeinfillprojectssuchastransit‐orienteddevelopment.StanCOGispreparingtheSCSforStanislausCountyandisscheduledtocompleteandadopttheSCSinlate2013.
CaliforniaTitle24EnergyEfficiencyandGreenBuilding(2008,2011,2014)
Title24providesvoluntaryandmandatoryenergyefficiencystandardsfornewresidentialandnon‐residentialbuildings,aswellasmajormodificationstoexistingbuildings.Thelastupdatewasadoptedin2013,whichtakeseffectin2014.TheCaliforniaGreenBuildingStandardsCode(includedinTitle24)establishedrequirementsforplanninganddesignforsustainablesitedevelopment,waterconservation,materialconservation,andinternalaircontaminants.
CARBGHGMandatoryReportingRuleTitle17(2009)
CARBapprovedarulerequiringmandatoryreportingofGHGemissionsfromcertainsources,pursuanttoAB32.Facilitiessubjecttothemandatoryreportingrulemustreporttheiremissionsfromthecalendaryear2009andhavethoseemissionsverifiedbyathirdpartyin2010.Ingeneraltheruleappliestofacilitiesemittingmorethan25,000MTCO2einanygivencalendaryearorelectricitygeneratingfacilitieswithanameplategeneratingcapacitygreaterthan1megawatt(MW)and/oremittingmorethan2,500MTCO2eperyear.Additionalrequirementsalsoapplytocementplantsandentitiesthatbuyandsellelectricityinthestate.
CaliforniaCapandTradeProgram(2011)
CARBadoptedtheCaliforniaCapandTradeprogram,formalizingacomplexmarketsystemdesignedtohelpCaliforniareachtheGHGemissionsreductionstargetssetforthinAB32.TheregulationwhichwentintoeffectonJanuary1,2013andwasidentifiedasakeystrategyintheAB32ScopingPlan,setsacapontheannualGHGemissionsfromthestate’slargestemitters,stationarysourcessuchasoilrefineries,powerplants,fueldistributioncenters,cementplantsandotherindustrialprocesses.Theregulationestablishesapricesignalwhichwilldrivelongterminvestmentincleanerfuelsandefficientenergyuse.
AB341MandatoryCommercialRecycling(2011)
Thislegislationrequirescommercialbusinessesandmulti‐familybuildingownerstosupportthereuse,recycling,compostingorotherdiversionofsolidwastefromdisposalbyeitherself‐haul,subscriptiontoahauler,arrangementforpickupofrecyclablematerialsorsubscriptiontoarecyclingservice.Thelawtookeffectinmid‐2012.
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Figure 1‐2. GHG Related Legislation, Regulation, and Executive Orders
StanCOG RTP/SCS
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Local Level Planning
TheAB32ScopingPlanlaysoutCalifornia’splanforachievingtheGHGreductionsrequiredbyAB32.SpecificallytheScopingPlandescribesalistofmeasuresthatthestatewillundertake,andtheexpectedGHGreductionsassociatedwiththesemeasuresbefore2020.BecausethestatedoesnothavejurisdictionalcontroloversomeoftheactivitiesthatproduceGHGemissionsinCalifornia,theAB32ScopingPlanarticulatesauniqueroleforlocalgovernmentsinachievingthestate’sGHGreductiongoals.TheAB32ScopingPlanrecommends,butdoesnotrequire,localgovernmentstoreduceGHGemissionsfromboththeirmunicipaloperationsandthecommunityatlargetoalevelthatis15%belowcurrentlevels.
AtthetimeoftheScopingPlanadoptionin2008,a15%reductionfrom2005–2008levelswasthestate’sburdenofreductiontomeet1990emissionslevels.However,thiscalculationwasbasedonanestimateonlyofthelevelofemissionsduringtheperiod2005to2008.Subsequentdevelopmentofactualinventoriesfor2005to2008indicatesthata10%to11%reductionisneededby2020tomeet1990emissionslevels.
ManyjurisdictionsacrossCaliforniahavecompletedaGHGInventory,aGHGreductionplan,orboth.Theseplansgenerallyaddresstwotypesofemissions.
Communityinventoryandreductionplansaddressemissionsthatarisefromthecommunityatlarge(residents,businessesandtheirassociatedactivitieswithinthejurisdictionalboundary).
Municipalinventoryandreductionplansaddressemissionsthatarisefromthemunicipaloperationsonly(CountyorCitybuildings,vehiclefleet,activitiesrequiredtoprovideservicestothejurisdiction).
CompletingaGHGinventoryisthefirststeptowardseitherofthesegoals.Inadditiontothisregionalcommunityinventory,thecitiesandunincorporatedareaofStanislausCountypreviouslycompletedmunicipalGHGinventoriesfortheyear2005.AsaseparatepartoftheRSTproject,communityinventoriesweredevelopedforeachjurisdictionfortheyear2005usingthesamemethodologyusedfortheregionalinventoryandprovidedtothemfortheiruse.
ThisreportpresentsacommunityGHGinventorydatafortheregionasawhole(sumofemissionsfromallincorporatedcitiesandtheunincorporatedcounty)forthebaselineyear2005.
Benefits of Greenhouse Gas Planning and Accurate Accounting
LocalgovernmentsoftenpursueGHGplanningformultiplereasons.AreductioninGHGemissionsisoftenaco‐benefitofotheractivities,primarilyenergyefficiencyrelatedactivitiesorotherenvironmentalmitigation.WithaccurateaccountingofGHGemissionsinthejurisdiction,acommunitycan“takecredit”fortheGHGbenefitsassociatedwitharangeofpolicies,programsandactivitiesthatthejurisdictionispursuinganyway.Thissectiondescribesco‐benefitstypicallyassociatedwithGHGaccountingandplanningandviceversa.
Greenhouse Gas Reduction Benefits
Thecompletionofacommunityand/ormunicipalGHGinventoryandthesubsequentsteptoidentifypoliciesandprogramsthatwillreduceGHGemissionsovertimecandemonstratethatlocal
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planningispromotingconsistencywithAB32,(i.e.,thatalocalgovernmentisdoingitsfairsharetohelpmeetthestategoalsoverall).
Energy Use Benefits
InthestateofCalifornia,GHGemissionsassociatedwiththeenergyusedtopowerandheatourbuildingsrepresentapproximately23%oftotalGHGemissionsin2005.BuildingenergyrelatedemissionsrepresentasimilarpercentoftotalemissionsattheCityorCountylevelaswell.Forfinancialreasons,includingtheincreasedavailabilityofutilityincentivesandretrofitgrants,localgovernments,home‐ownersandbusinessesopttoconductenergyefficiencyretrofitstoexistingconstruction.Buildingordinancesfornewerconstructionensureoptimumenergysavingsfornewoccupants.TheseenergysavingsbenefittheenergycustomeraswellastheutilityandalsoresultinlowerGHGemissions.
Financial Benefits
Inadditiontothefinancialbenefitsassociatedwithenergyefficientconstructionandretrofits,otherfinancialsavingsareoftenassociatedwithactionscommonlypursuedaspartofaCityorCounty’sGHGplanning.Forexample,whenwastediversionprogramsdecreasetheamountofwastegoingtolandfills,fewerlandfillfeesarepaid.Whencomprehensivewaterconservationeffortsarepursued,waterbillsarelower.Duringtimesofhighfuelcosts,alternativemodesoftransportationincludingbus,rail,bike,ride‐shareoremployersponsoredshuttlescangreatlyreduceindividual’sfuelcosts.Intheagricultureandforestrysectors(andothers)itisalsopossibletodevelopGHGoffsetprojectsbyestablishingspecificmanagementpracticesorinstallingspecificequipmentonthesite.Theoffsetprojectcanthenbesoldonthevoluntarymarket.Finally,throughtheeffortsofgatheringthedatarequiredtocompleteaGHGinventoryandregularlyupdateit,manycommunitiesidentifywaystostreamlinedataandreportingforotherprograms,increasingefficiencywithincitydepartments.
Additional Co‐Benefits
Additionalco‐benefitsofGHGplanningandaccountingaregenerallyassociatedwithimprovedairquality,increasedsustainabilityofthewatersupply,increasedaestheticsincommunitiesandpublichealth.
Tiering under CEQA
AmendmentstotheCEQAguidelinesinMarch2010describethatCEQAprojectevaluationofGHGemissionscantieroffaprogrammaticanalysisofGHGemissionsreductionsprovidedthattheGHGreductionplanincludesthefollowing(CEQAGuidelinesSection15183.5):
1. Quantifygreenhousegasemissions,bothexisting(a)andprojected(b)overaspecifiedtimeperiod,resultingfromactivitieswithinadefinedgeographicarea.
2. Establishalevel,basedonsubstantialevidence,belowwhichthecontributiontoGHGemissionsfromactivitiescoveredbytheplanwouldnotbecumulativelyconsiderable.ThisusuallyinvolvessettingaGHGreductiontargetaspartoftheplanthatisconsistentwiththestate’sgoals.ParticipatingjurisdictionsinStanislaushavenotsetGHGreductiontargetsaspartofthiseffort.
3. IdentifyandanalyzetheGHGemissionsresultingfromspecificactionsorcategoriesofactionsanticipatedwithinthegeographicarea.
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4. Specifymeasuresoragroupofmeasures,includingperformancestandardsthatsubstantialevidencedemonstrates,ifimplementedonaproject‐by‐projectbasis,wouldcollectivelyachievethespecifiedemissionslevel.
5. Monitortheplan’sprogress.
6. AdopttheGHGReductionStrategyinapublicprocessfollowingenvironmentalreview.
TheAmendmentstotheCEQAguidelinescreateastreamlinedCEQAprocessfortheanalysisofgreenhousegasemissionsattheprojectlevel.Individualprojectscoulddemonstrateconsistencywithanover‐archingGHGreductionplan,whereoneexists,inlieuofacomprehensiveproject‐levelGHGanalysisinordertoreachalessthansignificantdetermination.ThisapproachisalsosupportedbytheSanJoaquinAirPollutionControlDistrict.
Thisreportquantifiesexistinggreenhousegasemissionsonly(baselineyear2005)withinthecountyboundary.ToprepareaqualifiedGHGreductionplanthatcouldbeusedforCEQAtiering,Stanislausjurisdictionswouldneedtousetheseparatelypreparedindividualjurisdictionalcommunityinventoriesandthencompletesteps1b–6above.
Overview of Stanislaus County
StanislausCountyislocatedinCalifornia’sCentralValleyandisborderedbySanJoaquinCountytothenorth,MercedCountytothesouth,SantaClaraCountytothewestandCalaverasandTuolumneCountiestotheeast.TheSanJoaquinRiverflowsnorththroughthecenterofthecountyandeasternareasofthecountyareknownasthe“gatewaytoYosemite”.NineincorporatedcitiesarepresentinStanislausCounty:Ceres,Hughson,Modesto,Newman,Oakdale,Patterson,Riverbank,TurlockandWaterford.Themajorindustryintheunincorporatedcountyisagriculture.SignificantindustriesinStanislauscitiesincludethefollowing:foodpackagingandprocessing,agriculturalsupport,wineproduction,agriculture,governmentofficesandeducation,andtourism.AccordingtotheU.Scensus,thetotalpopulationofStanislausCountywas446,997in2000and514,453in2010.In2005,thepopulationofStanislausCountywas514,160.Socioeconomicdata(population,jobsandhousing)foralljurisdictionsinStanislausCountyforyear2005areshownbelowinTable1‐3.
Table 1‐3. Socioeconomic Data for All Participating Jurisdictions in 2005
Jurisdiction Households Population Employment
Ceres 12,639 40,722 8,402
Hughson 1,915 6,091 749
Modesto 73,489 206,962 78,310
Newman 3,091 10,083 1,056
Oakdale 7,496 20,299 6,005
Patterson 5,414 19,167 2,273
Riverbank 6,477 21,417 3,452
Turlock 23,074 67,510 23,738
Waterford 2,447 8,169 476
UnincorporatedCounty 36,730 113,740 47,521
TotalStanislausCounty 172,772 514,160 171,982
Source:StanCOG2005asreportedbyFehr&Peers2012
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Chapter 2 Sector Summaries
Thissectionpresentsthe2005StanislausRegionalGHGemissionsinventory.Resultsarepresentedbysector.TheGHGemissionsfortheregionasawhole(i.e.,“regionalinventory”)for2005arepresentedinTable2‐1andFigure2‐1.Percapita(Totalemissions/population)andperservicepopulation(Totalemissions/populationplusjobs)emissionsfortheStanislausregionwere11.8MTCO2e/personand8.8MTCO2e/servicepopulation(SP),respectively.ThesevaluesincludeAgriculture.Thefollowingsub‐sectionseachdescribeadifferentsectoroftheinventory.Thephysicalprocessesresultinginemissionswillbedescribedforeachandageneraloverviewofemissionsinthesectorwillbeprovided.Completediscussionofthedataacquisition,emissionscalculationsandmethodologies,anddatasourcesusedcanbefoundinChapter3.
Table 2‐1. 2005 GHG Emissions Inventory for the Stanislaus County Region (MT CO2e)
Sector Emissions Percent
Directa
Agriculture—LivestockEmissions 1,113,647 18%
Agriculture—OtherEmissions 340,767 6%
BuildingEnergy—NaturalGas 973,386 16%
Off‐RoadTransportation 134,546 2%
On‐RoadTransportation 1,636,983 27%
HighGWP/Refrigerants 364,473 6%
Indirectb BuildingEnergy—Electricity 1,380,477 23%
WasteGeneration 49,667 0.8%
WastewaterTreatment 17,899 0.3%
Water 32,267 0.5%
Total 6,044,113 100%
Excluded
c
StationarySources 642,576
WasteLandfill 16,115
a. Directemissionsareemissionsthatphysicallyoccurwithintheinventoryboundary;seeChapter1fordetail.
b. IndirectemissionsareduetoactivitythatoccurswithintheinventoryboundaryalthoughtheGHGemissionmayhappenoutsidetheinventoryboundary;seeChapter1fordetail.
c. Stationarysourceemissionswereexcludedduetostateandfederalregulationofthesesources.Landfillemissionswereexcludedtoavoiddouble‐countingwithwastegenerationemissions.
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Figure 2‐1. GHG Emissions Inventory for the Stanislaus County Region (MT CO2e)
Agriculture Emissionsintheagriculturesectoraredirectemissionsresultingfromtheapplicationoffertilizertocropsandtheactivityoflivestock5.EmissionsofN2Ocanresultfromanthropogenicinputsofnitrogenintosoilthroughfertilizersbywayofadirect(directlyfromthesoilstowhichthenitrogenisaddedandreleased)andindirect(followingvolatilizationofammoniaandoxidesofnitrogenfrommanagedsoils)pathway(IntergovernmentalPanelonClimateChange2006).EmissionsofCH4andN2Ocanalsoresultfromlivestockproductionthroughentericfermentationandmanuremanagement.BothdirectandindirectemissionsofN2Oareaccountedforinthisinventory.
5LivestockrelatedGHGemissionsresultfromentericfermentation,byruminants,andalsofrommanurebyalllivestocktypes.Thedecompositionofmanureinponds,stockpilesorothermanurestorageandtreatmentsystemsresultsinthereleaseofCH4andN2O,dependingonconditions.
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Agricultureemissionsaccountforapproximately24%oftheregion’stotalGHGemissionsinventoryin2005.Comparatively,agriculturalemissionsinthestateofCaliforniawereapproximately7%oftotalemissionsin2005.StanislausCountyisalargeagricultureproducingregionforthestateandforthenation.AsCaliforniaagricultureisconcentratedincertainareasofthestate,agriculturalrelatedemissionswillonlybeasignificantfractionoftotalemissionsinselectcommunities,suchastheunincorporatedportionsofStanislausCounty.StanislausCountyranked6thamong58countiesinCaliforniafortotaldollarvalueofagricultureproducts,ranked4thamong58countiesfortotalvalueoflivestockproductsandranked2ndamong58countiesforalmondproduction(USDACensusofAgriculture2007).In2005,agricultureemissionsinStanislausrepresentapproximately4.5%ofagriculturerelatedemissionsstatewide.
Thefourgeneralsourcesofagriculturalemissionsaccountedforinthisinventoryare:livestockentericfermentation,livestockmanuremanagement,N2Oemissionsfromtheapplicationoffertilizerandpesticide,andtheburningoffuelbyagriculturalvehiclesandequipment.AcompletedescriptionofmethodsanddatausedcanbefoundinChapter3.Table2‐2andFigure2‐2present2005agricultureemissionsbysource.Figure2‐3comparesStanislausCounty’sagriculturalemissionstothestateandnationalagriculturalemissions,whileTable2‐3comparesthecounty’sagriculturalemissionstootheragriculturalproducingcountiesinCalifornia.
Table 2‐2. GHG Emissions from Agriculture Sources in 2005 (MT CO2e)
AgriculturalSource TotalSectorEmissions Percentage
LivestockEntericFermentationandManureManagement 1,113,647 76.6%
FertilizerApplication 169,120 11.6%
PesticideUsage 2,090 0.1%
AgriculturalEquipment 169,557 11.7%
TotalEmissions 1,454,414 100.0%
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Figure 2‐2. GHG Emissions from Agriculture Sources in 2005 (MT CO2e)
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Figure 2‐3. Comparison of Stanislaus GHG Emissions from Agriculture to National and State Level Agriculture Emissions
Table 2‐3. Stanislaus Agriculture Emissions Compared to Other California Agriculture Producing Counties
CountyAgriculture‐RelatedEmissions(MTCO2e) Year SourcesIncludedinEmissions
StanislausCountya 1,454,414 2005 Allagriculturesources
SanJoaquinCountyb 951,023 2007 Allagriculturesources
TulareCountyc 3,294,870 2007 Dairy/feedlots
YoloCountyd 297,341 2008 Allagriculturesources
Note:a. Thisworkb. SanJoaquinCounty2011c. TulareCounty2011d. YoloCounty2010
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Building Energy GHGemissionsresultfromtheuseofelectricityandnaturalgasbyresidential,commercial,andindustrialbuildingsintheregion.Emissionsassociatedwithbuildingenergyuseaccountedfor39%ofthetotalregionalemissionsin2005(Table2‐1).ResidentsandbusinessintheregionreceiveelectricityandnaturalgasfromPacificGasandElectric(PG&E),TurlockIrrigationDistrict(TID)andModestoIrrigationDistrict(MID).Electricityuseinbuildingsresultsinindirectemissionsfromthepowerplantsthatproduceelectricity.Theseplantsmaybelocatedeitherwithinoroutsideofthecountyandthecombustionofthefueltoproducetheelectricityalwaysoccursinadifferentlocationfromtheuser.Electricityemissionsareclassifiedasindirectemissions.Naturalgasconsumptioninbuildingsbyfurnacesandotherappliancesresultindirectemissionswherethenaturalgasiscombusted;theseareclassifiedasdirectemissions.
Table2‐4presentstheenergyconsumption(residential,commercialandindustrialbuildings)in2005fortheregion.TheproportionsofenergytypeandenduserstotheregionaltotalofGHGemissionsinthissectorareshowninFigure2‐4.ThisdatacapturesdirectaccesscustomersinthePG&Eservicearea.MIDandTIDconfirmedtheabsenceofdirectaccesscustomersintheirserviceareas.Buildingenergyuseemissionsaregenerallyafunctionofthenumberofresidentsandbusinesses,typesandagesofbuildings,predominanttypesofindustryandthecompositionofthepowersupply.
Table 2‐4. Building Energy Consumption—Residential and Commercial/Industrial Electricity and Natural Gas in 2005
ResidentialBuildingEnergyUse Commercial/IndustrialBuildingEnergyUse
Electricity(kwh)NaturalGas(therms) Electricity(kwh)
NaturalGas(therms)
RegionalTotal 1,682,405,061 64,710,119 2,592,105,029 118,233,329
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Figure 2‐4. Proportion of Regional GHG Emissions in the Building Energy Sector Due to Electricity and Natural Gas Use by Various End Users (MT CO2e)
Buildingenergyrelatedemissionswithintheregionaretheresultofcommercial/industrialelectricityconsumption(36%)followedbycommercial/industrialnaturalgasconsumption(27%),residentialelectricity(23%)andresidentialnaturalgas(15%).
BuildingenergyrelatedemissionsinthestateofCaliforniaaccountedforapproximately23%oftotalstateGHGemissionsin2005,whilebuildingenergyemissionswereapproximately39%oftotalStanislausregionalemissionsin2005(CaliforniaAirResourcesBoard2011a).Buildingenergyuseistypicallybetween25–40%ofacommunity’stotalGHGemissionsdependingontheotherdominantsourcesofemissionsinthecommunity,thepresenceorabsenceoflargecommercialorindustrialusers,andtheclimateandageofthebuildingstock(i.e.,olderhomesincolderregionsofthestaterequiremoreheating).
On‐Road Transportation ThissectorincludesGHGemissionsthatresultfromtheburningoffuelbyon‐roadvehiclestravelingintheregion.On‐roadvehicleemissionsaccountfor27%oftheregion’stotalemissionsin2005andapproximately38%ofCalifornia’sstatewideemissionsduringthesameyear.Theseemissionsareconsidereddirectemissions.
TheStanislausCouncilofGovernments,orStanCOG,traveldemandmodelwasusedtodevelopvehiclemilestraveled(VMT)estimatesfortheregionin2005(FehrandPeers2012).Themodelcapturesvehicletrips,includingtrucktrips,bydifferenttravelpurposes,includinghome‐basedwork,shoppingandrecreationaltrips,andnon‐homebasedtrips.ThetraveldemandmodelareaincludesallofStanislausCounty.Adjacentcounties(SanJoaquin,Merced,SantaClara,Calaveras,
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Tuolumne,Mariposa,andAlameda)arerepresentedbyexternalgatewayswheremajorroadwaysprovideaccessintotheoverallmodelarea.Thesestationscapturethetrafficentering,exitingorpassingthroughthemodelareaonmajorcountyandstateroadways(e.g.,StateRoute99,Interstate5,andStateRoute108).
TransportationmodelingandthequantificationofGHGsinthisanalysisareconsistentwiththemethodsbeingusedforthedevelopmentofStanCOG’sSustainableCommunitiesStrategy.
Table2‐5andFigure2‐5presentregionalVMTandassociatedGHGemissionsin2005byvehiclespeedbins.Becausethefueleconomyofvehiclesdependsonthespeed,thefuelconsumptionandGHGemissionspartiallydependonthespeedatwhichvehiclesaregenerallytraveling.Ingeneral,themajorityofVMTintheregionoccuratspeedsbetween35and50milesperhour(mph)withabout15%occurringabovespeedsof60mph(highwaytraffic).
Table 2‐5. Regional VMT and GHG Emissions by Speed Bin
SpeedBin(MPH) AnnualVMT AnnualCO2Emissions(MTCO2)
0‐5 17,380,883 23,690
5‐10 15,549,764 16,374
10‐15 10,893,718 9,147
15‐20 11,154,315 7,746
20‐25 34,372,085 20,845
25‐30 305,504,699 166,798
30‐35 268,670,649 135,914
35‐40 838,474,144 404,119
40‐45 282,636,011 133,411
45‐50 373,459,791 177,517
50‐55 59,046,214 29,083
55‐60 100,798,989 53,002
60‐65 266,157,328 154,179
65‐70 450,077,391 265,409
Total 3,034,175,981 1,597,233
Note:TheemissionsinthistableareCO2emissions,notCO2eemissions.CH4andN2Oemissionsfromon‐roadtransportationwerecalculatedusingadifferentmethodology.
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Figure 2‐5. Regional GHG Emissions by Speed Bin in 2005 (MT CO2)
Off‐Road Transportation Thissectorcapturesfuelconsumptionbyalltypesofoff‐roadvehiclesandequipmentbeingusedintheregion,referredtointhisdocumentas“Off‐RoadTransportation”.Off‐roadequipmentincludesrecreationalboatsandvehicles,equipmentforindustry,construction,andlawnandgardenmaintenance(agriculturalequipmentwasincludedintheagriculturalsector).GHGemissionsresultfromthecombustionofdieselorgasolinetopowerthesevehiclesandequipment.TheseemissionswerecalculatedatthecountylevelusingCARB’sOFFROAD2007model.Off‐roadequipmentemissionsaccountedforapproximately2%ofthetotalregionalemissionsin2005(Table2‐1,Figure2‐1).Theseemissionsaredirectemissionsresultingfromequipmentfuelcombustion.Table2‐6andFigure2‐6presenttheregionalGHGemissionsduetooff‐roadequipmentin2005byequipmenttype.Constructionand/orminingequipmentaccountfor51%ofthetotalregionalemissionsinthissector.
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Table 2‐6. Regional GHG Emissions Due to Off‐Road Equipment in 2005 by EquipmentType
EquipmentType Off‐RoadEmissions(MTCO2e)
ConstructionandMiningEquipment 68,857
EntertainmentEquipment 123
IndustrialEquipment 17,225
LawnandGardenEquipment 8,348
LightCommercialEquipment 9,300
OtherPortableEquipment 67
PleasureCraft 12,595
RailyardOperations 2
RecreationalEquipment 5,198
TransportRefrigerationUnits 12,833
Total 134,546
Note:Emissionsfromoff‐roadvehiclesinthecountyweredeterminedusingCARB’sOFFROAD2007model.TheOFFROADmodelprovidestheamountandtypeoffuelconsumedatthecountylevelforawidevarietyofoff‐roadvehicleandequipmentcategories,suchasconstructionequipment,lawnandgardenequipment,andindustrialequipment.
Figure 2‐6. GHG Emissions Due to Off‐Road Equipment in 2005 from Various Off‐Road Equipment Types
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Stationary Sources ThissourcecategoryaccountsforGHGemissionsfromfuelcombustionandfugitive(process)emissionsatprimarilyindustrialfacilitieslocatedintheregion.Emissionsfromthesefacilities,includingGHGemissions,areregulatedbySJVAPCD,CARB,and/ortheUSEPAandlocaljurisdictionsusuallydefertostateandfederalauthoritytoregulatethesesources.Inaddition,giventhestateandfederalframeworkofregulation,localregulationofsuchsourcescouldresultinconfusionandinconsistenciesintheregulationofsuchlargesourcesbetweenjurisdictions,whichisundesirable.Thus,whileemissionswerequantifiedfromstationaryindustrialsourcetheywereexcludedfromGHGtotalsfortheregion.Werethesesourcestobeincludedintheregionaltotal,emissionsfromthesesourceswouldaccountforapproximately10%oftotalregionalemissionsin2005andareprimarilyassociatedwithfacilitiesthatsupporttheagricultureorfoodpackagingindustry.
GHGemissionsfromstationarysourcesresultfromonsitefuelusethatisnotprovidedbyacentralnaturalgasutilitysuchasPG&E(naturalgasuseisaccountedforinthebuildingenergycategory(Chapter1,Background).Combustedfuelsaccountedforinthissectorincludediesel,distillateoil,liquidpetroleumgas,propane,naturalgas(fromnon‐utilitysources),digestergas,gasoline,wastegas,wasteoil,vaporrecoverygas,landfillgasoranyfuelcombustedbyasourcerequiredtoobtainapermitfromtheSJVAPCD.AnumberofstationarysourcesintheregionarealsorequiredtoreportGHGemissionstoCARBunderCalifornia’sMandatoryReportingRule(MRR)forGHGemissions.PerSJVAQCDpolicy,fuelusedatausedtoestimateGHGemissionsinthisreportdoesnotincludefacilitiesthathaverequestedtheirfuelusebekeptconfidential.FuelusedbyequipmentnotrequiringaDistrictpermit,suchasresidentialcombustionequipment,portableequipment,mobileequipment,andpermitexemptstationarycombustionequipment,isalsonotincludedintheestimateofGHGemissionsfromstationarysources.
Severalpowergenerationfacilitiesarelocatedintheregion.EmissionsassociatedwiththesefacilitiesarecapturedintheBuildingEnergysectorwheretheenduseactivityoccurs.
Waste TheregionalGHGinventoryincludesGHGemissionsduetotwodistinctwastesources.Thefirst,wastegeneration,isforwardlooking,asitaccountsfortheGHGemissionsthatwilloccurinthefutureduetowastethatiscreatedduringtheinventoryyear(2005)andsenttoalandfillduringtheinventoryyear(2005),butdecomposesinthelandfillovermanyfutureyears(2005andbeyond).Theactivityofgeneratingthewasteoccurscompletelyinsidethejurisdictionboundaryandduringtheinventoryyear(2005),buttheGHGemissionsmayoccuroutsidetheboundaryatadistantlandfill.Theseemissionsareclassifiedasindirectemissionsandincludedintheregionaltotal.
Thesecondwastesource,landfillsites,isbackwardlookingandaccountsfortheGHGemissionsthatoccuratspecificlandfillsiteslocatedintheboundaryandaretheresultofallthewastethathashistoricallybeendepositedatthatsiteandiscurrentlydecomposinginthelandfillduringtheinventoryyear.Theactivityofgeneratingthewasteoccurredinthepast,andoccurredinanyofthejurisdictionsthatsendwastetothespecificlandfillsite.Sitespecificlandfillemissionsareonlyreportedasaninformationaliteminthisdocumentbecauseiftheywereincludedinregionaltotals,therewouldbeadouble‐countingofemissionsfromthewastesectorduetocombiningofthebackward‐lookingandforward‐lookingemissionsthatwoulddistortthepresentationofanannual
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emissionsestimate.Itwasdecidedtoincludetheforward‐lookingemissionsfromwastegenerationastheyareemissionsassociatedwiththeinventoryyearactivityandtodisclosethebackward‐lookinglandfillemissionasaninformationalitemonlybecauseitisrelatedtoprioryearwastegenerationbeforetheinventoryyear.Thediscussionbelowrelatesonlytotheregion’swastegenerationduring2005.
GHGemissionsduetosolidwastegeneratedwithintheregionin2005were49,667MTCO2eandaccountforapproximately0.8%oftotalregionalemissions.GHGemissionsduetowastegeneratedintheregionarefugitiveemissionsofCH4thatoccuratthevariousreceivinglandfills,andareconsideredanindirectemission.Thematerialsdisposedofintheregionarerecycled,composted,placedinalandfill,orcombustedforenergyattheCovantaFacilityonFinkRoad.Theemissionscalculatedhereincludethosethatresultonlyfromthedecompositionofwasteplacedinalandfill.EnergythatisproducedbycombustingwasteattheCovantafacilityissoldtoPG&E.AssociatedGHGemissionsarecapturedintheBuildingEnergysectorandarelower(onaperkwhbasis)thanGHGemissionsassociatedwiththeburningoffossilfuelstoproduceequivalentamountsofelectricity.Tonsofwasteofeachtypegeneratedintheregionin2005areshowninTable2‐7.RegionalGHGemissionsthatresultfromthelandfillingofeachtypeofwasteareshowninFigure2‐7(CaliforniaDepartmentofResourcesRecyclingandRecovery2012aand2012b)6.
Table 2‐7. Waste Generation by Waste Type (Tons)
WasteType TonnagebyWasteType(ShortTons)
Agricultural/YardWaste 85,201
FoodandBeverageContainers 29,971
OtherWaste 14,922
ConstructionandDemolitionWaste 82,805
OtherPlasticWaste 44,885
OtherGlassWaste 4,810
OrganicWaste 105,979
HazardousWaste 374
PaperProducts 177,784
OtherMetalWaste 13,507
Vehicle/EquipmentWaste 1,564
Total 561,801
Source:CaliforniaDepartmentofResourcesRecyclingandRecovery2012aand2012b
6AlldatarelatedtowastegenerationinthisdocumentwasobtainedthroughCalRecyclewhichtrackswastedataacrossthestate.Individuallocalwastehaulersmayhavemoredetailedandoftenmoreaccuratedataforwastegenerationamountsandprofilesforaspecificcommunity.Datacollectionfromallindividualwasteserviceproviderswasbeyondthescopeofthisregionaleffort.
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Figure 2‐7. Regional GHG Emissions by Waste Type (MT CO2e)
Wastegeneratedintheregioniseitherdiverted(throughrecycling,composting,etc.)ortransportedtooneof16differentlandfillslocatedthroughoutthestate(CaliforniaDepartmentofResourcesRecyclingandRecovery2012a).Muchofthewastegeneratedinthecountyisexportedtolandfillsoutsidethecounty.AccordingtoCalRecycle,in2005,theregionexported50%‐75%ofthewastegeneratedtolandfillsoutsideofthecountyborder,dependingonthejurisdiction.Assuch,themajorityoftheseemissionswillnotoccurwithinthecounty,butthecountyisresponsibleforcreatingthiswasteduringtheinventoryyear.
In2005,thepercentageofwastedivertedfromlandfillsinthecountywasbetween48%‐61%,dependingonthejurisdiction(CaliforniaDepartmentofResourcesRecyclingandRecovery2012b).Thestateaveragein2005was52%.
Water ThemajorityofwaterdemandinStanislausCountyismetwithsuppliesfromlocalgroundwaterandsurfacewaterincludingtheTuolumneRiver.TheOakFlatWaterDistrict,servicingtheWestSideAreareceivesStateWaterProjectdeliveries.Table2‐8andFigure2‐8showsthetotalamountofwaterconsumedintheregionin2005byenduser.Table2‐9showsthevariouswatersourcesfortheregionandtheassociatedenergyofeach.
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Table 2‐8. Water Consumption by End User Sector in 2005 (Agriculture, Commercial/Industrial, Residential)
EndUse WaterConsumption(Acre‐feet/year)
Residential 142,258
Commercial/Industrial 206,073
Agricultural 1,284,759
Total 1,633,089
Source:IndividualjurisdictionUrbanWaterManagementPlans,StanislausLocalAgencyFormationCommission2011,andUnitedStatesGeologicalSurvey2009
Figure 2‐8. Water Consumption by End User Sector in 2005 (Agriculture, Commercial/Industrial, Residential)
Table 2‐9. Water Sources for the Region and Associated Energy Intensity (kwh/MG)
WaterSource EnergyIntensity(kWh/MillionGallon)
GroundWater—SanJoaquinRiverBasin 896
SurfaceWater—StateWaterProjecttotheSanJoaquinValley 1,510
Source:CaliforniaAirPollutionControlOfficersAssociation2010
GHGemissionsassociatedwithwaterconsumptionareduetoelectricityuseforwatersupplyandconveyance(i.e.,energyusedtobringwatertotheregionfromotherareasorenergyconsumedtopumpwaterlocally),electricityuseforwatertreatment,andwaterdistribution(i.e.,energyusedtomovewaterwithintheregionfromtreatmentfacilitiestoendusers).Energyassociatedwith
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pumping,treatmentandlocaldistributionareaccountedforinthebuildingenergysector.OnlytheGHGemissionsrelatedtoconveyingwatertothecountyarereportedinthissection.
GHGemissionsrelatedtowaterconsumptionaccountedforapproximately0.5%oftheregion’stotalemissionsin2005.Theterm“waterconsumption”asusedinthissectionincludesthefollowingindirectemissionsbyactivity:Emissionsduetowaterconsumedbyresidential,commercial/industrial,andagriculturalendusersintheregionareincludedandwerecalculatedbasedoninformationinUrbanWaterManagementPlans(UWMP)inthecounty.
Wastewater GHGemissionsresultfromtwoactivitiesassociatedwiththetreatmentofcommercial/industrialanddomesticwastewater:1)energyconsumedtopowerthetreatmentfacilitiesand2)fugitiveemissionsofCH4andN2Othatoccurduringthechemicalandbiologicaldegradationofthewaste.Localgovernmentsoftenownandoperatewastewatertreatmentplants(WWTPs)andthustheGHGemissionsassociatedwithaspecificplant,regardlessofthepopulationitserves,arecapturedinajurisdiction’smunicipalGHGinventory.BecausesomejurisdictionsdonotownandoperateWWTPsandrelyonaplantoperatedbyaneighboringjurisdictionandbecausetheactivityofgeneratingwastewateroccurswithinthephysicalboundaryofthejurisdiction,theseGHGemissionsarealsocapturedinthecommunityinventorypresentedinthisreport
GHGemissionsduetothetreatmentofwastewatergeneratedbyresidents,businessesandfacilitiesintheregionaccountforapproximately0.3%oftotalregionalGHGemissionsin2005(Table2‐1andFigure2‐1).Themajorityoftheregion’sresidentsandbusinessesareservedby8WWTPslocatedwithintheboundaryofthisinventory.GHGemissionsthatresultfromelectricityand/ornaturalgasusedtopowerthefacilitiesareclassifiedasindirectemissionsandareincludedintheinventoryinthebuildingenergysector.FugitiveemissionsofCH4andN2Othatresultfromthetreatmentandbreakdownofwasteinthefacilityareclassifiedasdirectemissionsifoccurringataplantwithintheinventoryboundaryandindirectemissionsifthereceivingplantislocatedoutsideoftheinventoryboundary.GHGemissionsassociatedwiththetreatmentandbreakdownofwastecanvarybyalargeamountfromplanttoplant,dependingonthetechnologyinplaceattheplantandthepresenceorabsenceofanaerobicorfacultativelagoons,andnotnecessarilyontheamountofwastewatertreatedattheplantorthesizeofthepopulationitserves.Thus,WWTPsthatservesmallruralcommunitiesmayproducemoreemissionsthanlargeplantsservingmanytimesmorepeople.
ToestimateGHGemissionsduetowastewatergeneratedwithintheregion,percapitaGHGemissionsfactorsweredevelopedforeachWWTPusinginformationasreportedinthejurisdictions’municipalGHGinventories.PlantspecificfactorswerethenappliedtopopulationswithanadjustmentforcommercialandindustrialactivitypertheLGOP.FouroftheeightWWTPslocatedintheregioncaptureandflarethefugitiveemissions(biogas)onsite;theotherfourfacilitiesdonotcapturethebiogas.Emissionsfromflaredmethaneandmethaneusedasfuelarenotcountedtowardstotalemissionsastheyareconsideredtobeequivalenttothegasesproducedfromnaturaldecompositionprocesses.7
7ModestoMunicipalInventory
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Refrigerants/High GWP Gases Refrigerantsoftencontaingreenhousegases.DirectreleaseofthesecompoundsthroughleaksorduringmaintenanceoftheequipmentthatusethesecompoundsisadirectGHGemission.TotalemissionsfromrefrigerantsandotherhighGWPgaseswere364,473MTCO2eandaccountforapproximately6%oftotalregionalGHGemissionsin2005.Refrigerantemissionsalsoaccountforapproximately3%ofCalifornia’sstatewideGHGemissions(CaliforniaAirResourcesBoard2010b).
High‐GWPgasesareemittedfromresidentialandcommercial/industrialstationaryrefrigerationandair‐conditioningequipment.High‐GWPrefrigerantsincludechlorofluorocarbons(CFCs),HCFCs,andHFCs.ThesegasesareregulatedundertheMontrealProtocolandtheKyotoProtocol.Eachoftheserefrigerantshasaveryhighglobalwarmingpotential,rangingbetween500and10,000timesmorepotentthanCO2(CaliforniaAirResourcesBoard2009a).RefrigerantusesarecategorizedbyCARBaccordingly:
Largecommercialrefrigerationincludesrefrigeratedequipmentfoundinsupermarkets,largegrocerystores,andotherretailfoodestablishments.
Smallcommercialrefrigerationincludesstand‐alonedisplaycases,smallwalk‐incoldrooms,andothersmallrefrigerationequipmentusedprimarilyinconveniencestores,smallgrocerystores,pharmacies,andrestaurants.
LargecommercialACincludescentrifugalchillersandpackagedchillersusedforcomfortcoolinginnon‐residentialcommercialbuildings,whilesmallcommercialACincludesunitaryACsystemsusedforcommercialbuildingcomfortcooling.
ResidentialACandrefrigerationincludepackagedACunitsandrefrigerator‐freezersusedinhouseholds(CaliforniaAirResourcesBoard2009a).
RefrigerantemissionsfortheregionwerecalculatedusingstatewideemissionspublishedbyCARBandscaledtothelocallevelusinghouseholdpopulationandcommercial/industrialnaturalgasconsumptiondata.
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Chapter 3 Methods
ThissectiondescribesdatasourcesandmethodsusedtoestimateGHGemissionsfromallsectorsfortheregion.
DoublecountingofGHGemissionswouldresultinemissionsfromaspecificsourcebeingattributedtomorethanonesector,whichwouldresultinanoverestimateoftotalGHGemissions.Carefulattentionwaspaidtothedevelopmentofeachsector’semissionsestimatestoensurethatdoublecountingofemissionsdidnotoccur.
Agriculture
What the Sector Includes
Thissectorincludesemissionsfromagriculturalactivitiesassociatedwiththecombustionoffossilfuelsinagriculturalequipment,fugitiveemissionsofmethaneandnitrousoxidefrommanuremanagement,fugitiveemissionsofmethanefromentericfermentation,fugitiveemissionsofnitrousoxidefromfertilizeruse,andpesticiderelatedGHGemissions.
Methodology
Fuel Combustion Emissions from Agricultural Vehicles
Agriculturalvehiclesincludetractors,pumps,smallfarmequipment,andothervehiclesusedforagriculturalpurposes.EmissionsfromagriculturalvehicleswerecalculatedusingCARB’sOFFROAD2007model.TheOFFROAD2007modelestimatesemissionsatthecountylevelformultipleequipmentandvehicletypes.
Emissions from Manure Management, Enteric Fermentation, and Fertilizer Use
Toestimateemissionsintheseagriculturalsub‐sectors,populationsinvariouslivestockcategoriesandacresofagriculturallandtypeswithintheregionwereobtainedfromtheUSDAAgricultureCensusfor2005.Thisdataincludesthepopulationofmilkcows,beefcows,othercattle,hogsandpigs,poultry,sheep,lambs,andgoats,aswellasamountsandtypesoffertilizerapplicationforeachU.S.countyfor2002and2007(U.S.DepartmentofAgriculture2007).Alinearextrapolationwasusedtoestimate2005populationdataandfertilizeracreage.ManuremanagementandentericfermentationemissionswerecalculatedusinglivestockpopulationnumbersandstandardemissionsfactorsusedintheCaliforniastateGHGinventoryanddevelopedbyCARB(2010).
EmissionsresultingfromfertilizerusewerecalculatedusingthenumberofacrestreatedwithfertilizersfoundintheUSDA’sAgricultureCensusinconjunctionwithCARBequationsandprotocolsforestimatingdirectandindirectN2Oemissionsfromfertilizerapplication(U.S.DepartmentofAgriculture2007;CaliforniaAirResourcesBoard2011a).
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Pesticiderelatedemissionswereestimatedusingacresofeachcroptypeandthecorrespondingpesticidecarbonintensityfactors,andpesticideapplicationratesfromtheCaliforniaPesticideUseReport(PUR)dataset,collectedandmanagedbytheCaliforniaDepartmentofPesticideRegulation(PesticideActionNetwork2010)8.
Data Sources
U.S.DepartmentofAgriculture(USDA).2007.http://www.agcensus.usda.gov/Publications/2007/Full_Report/Volume_1,_Chapter_2_County_Level/California/
CaliforniaAirResourcesBoard.2011a.CaliforniaGreenhouseGasInventoryData2000to2009andTechnicalSupportDocument.http://www.arb.ca.gov/cc/inventory/data/data.htm
PesticideActionNetwork.2010.Available:http://www.pesticideinfo.org/DCo.jsp?cok=50
Building Energy
What the Sector Includes
Buildingenergyemissionsincludebothdirectemissionsfromonsitenaturalgasconsumption(heatingandcooking)andindirectemissionsfromelectricityconsumption.Thissectorcapturesbothresidentialandcommercial/industrialbuildingsorfacilities.Indirectemissionsfromelectricityconsumptionoccurasaresultofcombustionoffossilfuelsatpowerplants,althoughtheactivityofusingelectricityoccurs(e.g.,lightingorairconditioning)withintheinventoryboundary.
Methodology
Electricityandnaturalgasusagedata(aggregatedbyendusercategories)wascollectedfromtheutilitiesservingtheregion.Theseutilitiesinclude:MID,PG&E,andTID.GHGemissionsduetoelectricityusewerecalculatedbyapplyingutilityandyear‐specificCO2emissionfactors(MTCO2e/MWH)tothetotalelectricityconsumption.CO2electricityemissionfactorsforMIDandPG&EweretakenfromPublicUtilityProtocolReports9(theseutilitiespubliclyreporttheiremissionstotheCaliforniaClimateActionRegistry),whiletheCO2electricityemissionfactorforTIDwasprovidedbyTID.Weightedaveragesoftheemissionfactorswerecalculatedforcitiesthatreceiveelectricityfrommorethanoneutility.ElectricityemissionfactorsforCH4andN2OweretakenfromonE‐Grid(U.S.EnvironmentalProtectionAgency2010b)valuesforCaliforniaandareidenticalforallthreeutilities.TIDandMIDconfirmedthatnodirectaccesscustomersarepresentwithintheirserviceareas.ElectricityconsumptiondataasprovidedbyPG&Eaccountsfordirectaccesscustomerswithintheirservicearea.
NaturalgasisprovidedtothecountybyPG&E.Naturalgasconsumptionbyendusercategoryforthewholeregionin2005wasprovidedbyPG&E.GHGemissionsduetonaturalgasconsumptionwereestimatedbymultiplyingnaturalgasconsumption(therms)bythenaturalgasemission
8OriginalsourceforallpesticideusedatausedbyPANistheCaliforniaPesticideUseReport(PUR)dataset,collectedandmanagedbytheCaliforniaDepartmentofPesticideRegulation.9CaliforniaClimateActionRegistryPublicReports:<http://www.climateregistry.org/>
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factorsforCO2,CH4,andN2OfromtheClimateRegistryGeneralReportingProtocolversion3.1(CaliforniaClimateActionRegistry2009).
Data Sources Electricityconsumptionfortheregionbyendusercategoryand2005carbonintensityof
electricity(residential,commercial,industrial)for2005—TID
Electricityconsumptionfortheregionbyendusercategoryand2005carbonintensityofelectricity(residential,commercial,industrial)for2005—MID
Electricityandnaturalgasconsumptionfortheregionbyendusercategoryand2005carbonintensityofelectricity(residential,commercial,industrial)for2005—PG&E
CO2,CH4andN2Oemissionfactorsfornaturalgascombustion—CaliforniaClimateActionRegistryGeneralReportingProtocolv.3.1
Landfill Sites
What the Sector Includes
ThissectorincludesCH4emissionsfromsolidwastethatwasalreadyinplaceduringtheinventoryyear2005inlandfillsitesinthecounty.Thewastethatisinplaceintheselandfillsmayhavebeengeneratedbymanyjurisdictionsovermanyyearsandthemethanethatisphysicallyreleasedinagivenyearisthecombinationofdecomposingwastefrommanyyearsinthepast.Landfillemissionwerequantifiedfor2005butwereexcludedfromtheregionalGHGinventorybecausetheemissionsfromwastegenerationwereconsideredmoreappropriatetoincludeintheregionaltotalastheyaretiedtowastegeneratingactivitythatoccurredin2005versusthelandfillemissionswhicharetiedtoprioryearhistoricalwastegeneration.PertheLGOP,landfillemissions,forlandfillsownedandoperatedbyajurisdiction,shouldbeincludedinamunicipalinventoryastheyareundertheoperationalcontrolofthejurisdiction.Emissionsassociatedwiththethreelandfillslocatedintheunincorporatedcountyarea(Bonzi,FinkRoad,andGeerRoad)werenotcapturedinthemunicipalinventoriesandareincludedhereasaninformationalitemonly.
Methodology
EmissionsresultingfromthedecompositionofwasteinplaceatregionallandfillsweremodeledusingCARB’slandfillemissionstool(CaliforniaAirResourcesBoard2011b).StaffreportsfromCECandCARBwereusedtodeterminetheyearinwhichthelandfillsopenedandthewasteinplaceatinterimyears(CaliforniaEnergyCommission2002;CaliforniaAirResourcesBoard2009b).CompostingfacilitiesinthecountywerenotanalyzedforGHGemissionsbecauseofthebiogenicnatureofcompostpileemissions(U.S.EnvironmentalProtectionAgency2010a).ThelandfillemissionstoolrequiresanannualwastedepositionaswellasdailycoverandclimateconditionsatthelandfilltogenerateannualCO2andCH4emissionsforeachyearthatwasteispresentinthelandfill.Anassumedlandfillgascapturerateof75%wasappliedtoCH4emissionsfrom2005ateachlandfill.CO2emissionsfromlandfillsareconsideredbiogenicandwerenotincludedinthisanalysis.
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Data Sources CECStaffReport500‐02‐041V1.September2002.LandfillGastoEnergyPotentialinCalifornia.
CARB.StationarySourceDivision.May2009.InitialStatementofReasonsfortheProposedRegulationtoReduceMethaneEmissionsfromMunicipalSolidWasteLandfills.
CARBFODLandfillEmissionsTool
Off‐Road Transportation
What the Sector Includes
Thissectorincludesemissionsduetotheburningoffuelbyalltypesofoff‐roadvehiclesandequipmentoperatinginthecountyincludingbutnotlimitedtoresidential(e.g.,lawnandgarden),commercial/industrial(e.g.,transportationrefrigerationunits,construction),oil,gasandminingequipment,pleasurecraftandrecreationalvehicles,andportablepumpsandgenerators.
Methodology
Emissionsfromoff‐roadvehiclesinthecountywereestimatedusingCARB’sOFFROAD2007model(CaliforniaAirResourcesBoard2007).TheOFFROADmodelprovidestheannualactivitylevel(hoursofoperationperyearorgallonsoffuelconsumedperyear)andtypeoffuelconsumedforawidevarietyofoff‐roadvehicleandequipmentcategories.Outputsareprovidedatthecountylevel.ThefuelconsumedwassummedforeachequipmentandvehiclecategoryandmultipliedbycorrespondingfuelemissionfactorsfromtheCaliforniaClimateActionReserve(2009)GeneralReportingProtocolv3.1.TheCCARemissionfactorsrelatetheamountofCO2,CH4,andN2Oemittedpergallonofgasoline,diesel,orliquefiedpropaneconsumed.
Data Sources CaliforniaClimateActionRegistryGeneralReportingProtocolv3.1.January2009
CARB’sOFFROAD2007model
Regionalsocioeconomicdata(TableES‐2)
On‐Road Transportation
What the Sector Includes
Thissectorincludesemissionsfromon‐roadtransportationintheregion.Emissionsfromthissectorareduetothecombustionoffossilfuels(suchasdieselandgasoline)usedtopowerallon‐roadvehicles(e.g.,lightandmediumdutyautos,mediumandheavydutytrucks,buses,andmotorcycles).
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Methodology
TrafficmodelingwasconductedfortheregionusingtheStanCOGTravelDemandModelfortheyear2005.Thissamemodel,andallunderlyingassumptionsandinputs,willalsobeusedforallSB375Planningintheregion.TheStanCOGmodelrunswereperformedbytrafficanalystsatFehrandPeers.
CO2emissionsfromon‐roadvehicleswereestimatedusingVMTdataasoutputbytheStanCOGTravelDemandModelandemissionfactors(gramsCO2/mile)byspeedbinfromtheCT‐EMFACmodel(CaliforniaDepartmentofTransportation2007).TheStanCOGtraveldemandmodelincludesmultiplevehicletriptypessuchashome‐basedwork,shoppingandrecreationaltrips,andnon‐homebasedtrips.Forthisanalysis,VMTwasestimatedfortheregionusingtheaccountingguidelinessetforthbytheSB375RegionalTargetsAdvisoryCommittee.VMTforthecountyisdefinedas:
1. AllCounty‐County(CC‐CC)trips:AlltripsthattravelfromonepartoftheCountytoanotherpartofthecountyarea.
2. One‐halfofCounty‐External(CC‐EC)trips:One‐halfofthetripswithanorigininthecountyandadestinationoutsideStanislausCounty.
3. One‐halfofExternal‐County(EC‐CC)trips:One‐halfofthetripswithanoriginoutsideStanislausCountyandadestinationinthecounty.
CH4andN2OemissionswerecalculatedusingtheVMTdataandemissionfactors(gramsCH4/mileorgramsN2O/mile)asprovidedbytheEMFAC2011model(CaliforniaAirResourcesBoard2011c).TheEMFAC2011modelwasalsousedtodeterminethevehiclecategoryprofileinStanislausCounty.Thevehiclecategorydistributionindicatesthevehicletypesinthecountysuchaslightdutyautos,lightdutytrucks,heavydutytrucksandbuses.TheproportionsofvehicletypesweremultipliedbytotalVMTandthenbythecorrespondingvehicletypeemissionfactorfromtheEPAtoestimateCH4andN2Oemissions.
Data Sources StanCOGTDMoutputsfortheregion
*CTEMFACmodel
U.S.EnvironmentalProtectionAgency.InventoryofU.S.GreenhouseGasEmissionsandSinks:1990‐2005,EPA430‐R‐07‐002,Annex3.2,(April2007)
Refrigerants/ High GWP gases
What the Sector Includes
Refrigerantemissionsareproducedbyairconditioninguseandotherrefrigerantapplicationsincommercial/industrialandresidentialbuildings.
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Methodology
ICFusedatopdownapproachtoestimaterefrigerantemissions,usingstate‐leveldataprovidedbyCARB(CaliforniaEnergyCommission2006).Residentialrefrigerantemissionswereestimatedbyscalingstate‐levelresidentialrefrigerantemissionstotheregionbasedonthenumberofhouseholds.
Commercial/industrialrefrigerantemissionsweredeterminedbyscalingstatelevelcommercialrefrigerantusetotheregionbasedoncommercialnaturalgasconsumption.TheCEChasdeterminedacorrelationbetweenthecommercialnaturalgasuseandcommercialrefrigerantemissions(CaliforniaEnergyCommissionn.d.).
Data Sources CaliforniaGHGEmissionInventory2000–2009(CaliforniaAirResourcesBoard2012)
Naturalgasconsumptionbyendusercategory(residential,commercial,industrial)for2005—PG&E
Regionalsocioeconomicdata(TableES‐2)
Stationary Sources
What the Sector Includes
Thissectorincludesemissionsfromstationarycombustionoffossilfuels(exceptnaturalgas,whichisincludedinthebuildingenergyusesector),andindustrialprocessemissions.
Methodology
EmissionsresultingfromthecombustionoffuelsatstationarysourceswereestimatedusingfuelconsumptioninformationforpermittedsourcesprovidedbytheSJVAPCD(LelandVillalvazo,SJVAPCD,pers.comm.).DatafromtheSJVAPCDincludedalistoffueltypesandtheamountconsumedandcapturesthosesourcesemittinggreaterthan25,000MTCO2eperyearandarerequiredtoreportunderCalifornia’sMandatoryReportingRule.FuelconsumptionquantitiesweremultipliedbycorrespondingcarbonintensityfuelemissionfactorsfromtheClimateRegistrytoobtainGHGemissions.
Data Sources CaliforniaClimateActionRegistryGeneralReportingProtocolv3.1(January2009)
SJVAPCD,personalcommunicationLelandVillalvazo
Stanislaus County Methods
Stanislaus Countywide Regional Community Greenhouse Gas Inventory
3‐7 July 2013
ICF 00203.10
Waste Generation
What the Sector Includes
Thissectorincludesmethaneemissionsthatwillresultfromthedecompositionofwasteinlandfills,fromwastethatwasgeneratedbyintheregionin2005.Theseemissionsarealsoknownasthe“futuremethanecommitment”ofthewaste.CO2emissionsduetowastegeneratedin2005arenotconsideredinthisanalysisbecausetheyareconsideredbiogenicinorigin.
Methodology
EmissionsfromwastegenerationwerecalculatedusingpubliclyavailabledatafromCalRecycleandemissionfactorsbasedonEPA’sWasteReductionModel(WARM).ICFalteredemissionfactorsfromWARMtodiscountemissionsfromwastecollectionvehicles,andrecyclingrelatedemissions,asthesearelifecyclesandshouldnotbeincludedinacommunityGHGinventory.WasteintheregioniscollectedbytheCityofModestoandSCRSWPAwhoisresponsibleforwastecollectioninthecitiesandunincorporatedareasinStanislausCountyexceptModesto.
A1999StanislausCountywasteprofilefromCalRecyclewasusedtoestimatethetotaltonsofeachtypeofwastegeneratedintheregionin2005(CaliforniaDepartmentofResourcesRecyclingandRecovery2012aand2012b).Totalwastetonnagein2009wasobtainedforModestoandSCRSWPA,alsofromCalRecycle.Foreachmaterialtypesuchasusedoil,paint,orlumber,themodifiedEPAWARMemissionfactorthatrelatingCO2eemissionspertonofwastewereapplied.Theamountofeachmaterialtypewasmultipliedbythematerial’scorrespondingemissionfactorstofindemissionsbymaterialtype,andtheemissionsfromallmaterialtypesweresummedtoestimatetotalemissions.
Data Sources CaliforniaDepartmentofResourcesRecyclingandRecovery(CalRecycle)
U.S.EPA’sWasteReductionModel(WARM).
Wastewater Treatment
What the sector includes
Theseemissionsareassociatedwiththetreatmentofindustrial,residential,andcommercialwastewaterproducedbyeachparticipatingjurisdiction.TheseemissionsresultfromfugitiveemissionsofCH4andN2OthatoccurduringthechemicalandbiologicalbreakdownofwastewaterattheWWTP.
Methodology
FugitiveandprocessemissionsthatresultfromthetreatmentofwastewaterwereestimatedusingeachoftheCounty’sjurisdiction’smunicipalGHGinventories.ThemunicipalinventorieswerepreparedpriortothisanalysisandquantifytheGHGemissionsresultingfrommunicipaloperations,
Stanislaus County Methods
Stanislaus Countywide Regional Community Greenhouse Gas Inventory
3‐8 July 2013
ICF 00203.10
includingdirectandindirectemissionsfromindividualwastewatertreatmentplants.Forthisanalysis,ICFusedthefollowingdatafromthemunicipalinventories:WWTPservicepopulationandprocessemissions(directemissions).Inaddition,ICFmadeseveraladjustmentstoparametersinthemunicipalinventoriesincludingthefollowingchanges:emissionsresultingfromelectricityconsumptionattheWWTPswereomittedtoavoidoverlapwiththebuildingenergysector,methaneemissionsataerobicplantswereomittedusingLGOPguidance,N2Oprocessemissionswereaddedwherenecessary,andservicepopulationswerechangedusinganadjustmentfactor(fromLGOP)toincludepreviouslyunaccountedforindustrialwastewater.
PercapitavaluesforwastewateremissionsweredevelopedusingtheICF‐adjustedmunicipalinventorywastewateremissionsandtheWTTPservicepopulations.Todeterminewastewatertreatmentplantrelatedemissions,thepercapitavalueswereappliedtothepopulationthatresideswithinthecountyboundaryonly.
EmissionfromsepticsystemswereestimatedandaddedtoWWTPemissions.Theamountofpeopleusingsepticsystemswasestimatedusinginformationincommunities’GeneralPlans.ApercapitasepticsystememissionfactorfromtheLocalGovernmentsOperationsProtocolwasusedtodetermineCH4andN2Oemissionsresultingfromsepticsystemuse(LocalGovernmentsOperationsProtocol2010).
Data Sources MunicipalGHGInventories—alljurisdictions(availableuponrequestfromtheindividualcities
inStanislausCounty)
CARB.May2010.LGOPforthequantificationandreportingofgreenhousegasemissionsinventories.V1.1.
Water
What the sector includes
Emissionsfromwaterconsumptionwereestimatedbasedontheenergyassociatedwiththedistributionofwatertojurisdictionsintheregion.
Methodology
Emissionsfromtheconveyanceofwater(i.e.,thetransportofwatersuppliesfromoutsidetheinventoryboundarytowithintheboundary)werecalculatedusinginformationabouttotalwaterconsumptionandwatersourcesfromeachoftheCountyjurisdiction’sUWMPs.GHGemissionsassociatedwiththeenergyrequiredtotreatandlocallydistributewaterthatissuppliedfromotherareasarecapturedinthebuildingenergysector.TheUWMPsforsomejurisdictionswereunavailable,and,inthesecases,waterconsumptiondatawastakenfromMunicipalServiceReviews(MSR)conductedbytheLAFCO(StanislausLocalAgencyFormationCommission2011).Waterconsumptiondatafortheunincorporatedcountywasestimatedusing2005datafromtheUnitedStatesGeologicalSurvey(USGS)(2009).
Stanislaus County Methods
Stanislaus Countywide Regional Community Greenhouse Gas Inventory
3‐9 July 2013
ICF 00203.10
Insomeinstances,waterconsumptionwasnotavailableforthebaselineinventoryyear(2005).Inthesecases,waterconsumptionwasscaledfromanalternativeyeartothebaselineyearusingpopulation.Thismethodassumesthatwaterconsumptionchangesproportionallywithpopulation.Inothercases,waterconsumptionbyenduse(residential,commercial,etc.)wasnotavailable.Itwasassumedthatjurisdictionswhereconsumptionbyendusewasunavailablehaveaverageproportionsofenduseconsumptionascitieswithsimilarpopulationsizes.Alternately,enduseconsumptionwasdeterminedusingtheproportionsofcommercial/industrialandresidentialacresforjurisdictionswithavailableacreagedata.
Waterconsumptiondatafromthesourcesofwaterinthecounty,groundwater,surfacewater,andrecycledwater,weretakenfromtheUWMPs,MSRs,andUSGS.TheelectricityrequiredtoconveywaterfromeachsourcewasestimatedusingelectricityintensityfactorsfromCAPCOA(CAPCOA2010).ElectricityconsumptionrequiredforwaterconveyancetoeachjurisdictionwasmultipliedbycarbonintensityfactorsfromtheassociatedutilitiestoarriveatGHGemissionsresultingfromwaterconveyance.
Data Sources CAPCOA2010
MunicipalServiceReviewsfromtheLAFCO
UWMPsfromthejurisdictionsthathaveapubliclyavailableUWMP
USGSWaterStudy
Stanislaus Countywide Regional Community Greenhouse Gas Inventory
4‐1 July 2013
ICF 00203.10
Chapter 4 References
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Personal Communications Villalvazo,Leland.SupervisingAirQualitySpecialist.SanJoaquinValleyAirPollutionControl
District.February2012—emailwithLindseyMcAlpineofICFInternationalregardingamountoffuelburntatpermittedstationarysourcesineachjurisdiction.