... 18OpportunitiestoReduceGreenhouseGasEmissionsthroughMaterials and Land Management Practices September2009SECTION3POTENTIALGHGREDUCTIONSTHROUGHMATERIALS AND LANDMANA GEMENTMaterials and land management directly and indirectlyimpact58‐62%oftotalU.S.GHGemissions, and, therefore,providemanyopportunitiestoreduceGHGemissions.Thissectionpresentssomeexamplesofmaterials and land management approachesthatcouldresultinsignificantemissionreductions.REDUCINGGHGEMISSIONSTHROUGHMATERIALS MANAGEMENT PRACTICES Materials management isatermthatdescribeshowmaterialsaremanagedastheyflowthroughtheeconomy—fromresourceextractiontoproductdesign and manufacture,transport,use,reuse,recycling, and endoflife(seeFigure6).Takingasystemsviewoftheimpactsmaterialshavethroughouttheirlifecycleallowsforanalysistoanswerquestionssuchas:Whereinthematerialslife ... REDUCINGORAVOIDINGGHGEMISSIONSTHROUGHLAND MANAGEMENT PRACTICES Land management describeshowwemanage and uselandtoprovideopenspace and habitat,food,naturalresources, and placesforpeopletolive,work, and recreate.EPApromotesintegratedland management strategiesthatuselandasproductively and sustainablyaspossiblebypromotingsmartgrowth,preventing and minimizingtheoccurrenceofcontamination and bycleaningup,reusing, and restoringcontaminatedlandforbeneficialreusebycommunities.67AsdescribedinBox7,land management hasthreekeycomponents:landprotection,sustainablelanduse, and landrevitalization.Similartothematerials management approachesthatcanbeusedinthematerialflow,land management approachescanbeusedtoreduceGHGemissionsbyimproving practices withinoracrosseachofthesecomponents.Landprotection practices limithowmuchlandiscontaminatedeachyear.Whenlandiscontaminated,itshouldbecleaneduptolevelsprotectiveofhumanhealth and theenvironment.Land ... TheProvisionofFoodsliceofthepiechartrepresentsemissionsassociatedwithfoodproduction,processing,transport, and disposal, and iscomposedofaportionofemissionsfromalleconomicsectorsexceptResidential.Itincludesdirectemissionsfromagriculturalsources,agriculturalsectorelectricityuse,transportoffood‐relatedproducts(freight),wastewatertreatment(exceptforemissionsfrompulp and papermanufacturing and ethanolproduction),theconsumptionoffuel and electricityinfood and beverageprocessing,leaksofhydrofluorocarbons(HFCs)fromrefrigerationequipment, and composting.Carbonsequestrationonagriculturallandsiscapturedinthelandsinkdiscussedbelow.ProvisionofFoodisestimatedtoaccountfor895MMTCO2E,or13%,of2006U.S.GHGemissions.42NotethattheU.S.GHGemissionspresentedinFigures1through5representemissionsthatarereleaseddomestically.Emissionsassociatedwithgoods and servicesthatareproducedinothercountries(i.e.,emissionsassociatedwithextractionofrawmaterials,processing, and productionofgoods and servicesoutsidetheUnitedStates)butconsumedintheUnitedStatesarenotcapturedintheU.S.Inventory, and thereforearenotreflectedhere.Correspondingly,theemissionsassociatedwithgoods and servicesproducedintheUnitedStatesthatareexportedforconsumptioninothercountriesareincluded.Manymaterials management strategiesreduceemissionsfromproductionofgoodsoutsidetheUnitedStates,butthosepotentialreductionsarenotreflectedinthisdocument.IfU.S.emissionswerecalculatedusingatotallifecycleperspective,basedongoods and servicesconsumedratherthanproducedintheUnitedStates,theemissionsassociatedwithmaterials management wouldbegreaterthanisshownduetothelargequantityofgoodsthatareimported.43Land Management Thesystems‐basedviewalsohelpsconveytheeffectland management hasonU.S.GHGemissions.Theland management portionofthepiechartshowninFigure4representstheemissions and sinksassociatedwithland management activitiesintheUnitedStates,includingemissions and sinksassociatedwiththepreservationofgreenfields and changestolanduse and land management, includinglanddevelopment,reuse, and restoration....