MelbourneMetroRailProjectMMR-AJM-PWAA-RP-NN-000813EnvironmentalRiskAssessmentReport(RiskRegister)MelbourneMetroRailAuthority20April2016Revision:C1Reference:CMS332569FileMMR-AJM-PWAA-RP-NN-00081320April2016RevisionC1Documentcontrolrecord121ExhibitionStreetMelbourneVIC3000POBox23061DocklandsVIC8012AustraliaApersonusingAJMJVdocumentsordataacceptstheriskof:a)Usingthedocumentsordatainelectronicformwithoutrequestingandcheckingthemforaccuracyagainsttheoriginalhardcopyversion.b)UsingthedocumentsordataforanypurposenotagreedtoinwritingbyAJMJV.DocumentcontrolReporttitleEnvironmentalRiskAssessmentReport(RiskRegister)DocumentIDMMR-AJM-PWAA-RP-NN-000813ContractNo.CMS332569FilepathClientMelbourneMetroRailAuthorityClientcontactDanielCullenRevDateRevisiondetails/statusPreparedbyAuthorVerifierApproverC120/04/2016FinalIssueforExhibitionShelleyAdaShelleyAdaMarkTansleyLisaRyanCurrentrevisionC1ApprovalAuthorsignatureApproversignatureNameShelleyAdaNameLisaRyan©Copyright2016AJMJointVenture.Theconcepts,dataandinformationcontainedinthisdocumentarethepropertyofAJMJointVenture.Nopartofthisdocumentmaybereproduced,used,copied,publishedoradaptedforuseexceptinaccordancewiththeprovisionsoftheCopyrightAct1968orwiththeconsentofAJMJointVenture.Thisreporthasbeenpreparedonbehalfof,andfortheexclusiveuseofMelbourneMetroRailAuthority(“MMRA”),andissubjectto,andissuedinaccordancewith,theprovisionsofthecontractbetweenAJMJointVentureandMMRA.AJMJointVenturemakesnorepresentationsandundertakesnodutytoanythirdpartywhomayuseorrelyuponthisreport,andacceptsnoliabilityorresponsibilitywhatsoeverfor,orinrespectof,anyuseof,orrelianceupon,thisreportbyanythirdparty.Anythirdpartyusingand/orrelyinguponthisreportacceptssoleresponsibilityandallriskforusingand/orrelyingonthisreportforanypurpose.ThisreporthasbeenproducedfrominformationsourcedfromMMRAand/orfromothersources,relatingtothedatesandperiodsreferredtointhisreport.Exceptasotherwisestatedinthereport,AJMJointVenturehasnotattemptedtoverifytheaccuracyorcompletenessofanysuchinformation.Iftheinformationissubsequentlydeterminedtobefalse,inaccurateorincompletethenitispossiblethatourobservationsandconclusionsasexpressedinthisreportmaychange.Thepassageoftime,manifestationoflatentconditionsorimpactsoffutureeventsmayrequirefurtherexaminationoftheprojectandsubsequentdataanalysis,andre-evaluationofthedata,findings,observationsandconclusionsexpressedinthisreport.Thisreportshouldbereadinfullandnoexcerptsaretobetakenasrepresentativeofthefindings.PageiFileMMR-AJM-PWAA-RP-NN-00081320April2016RevisionC1Contents1Introduction11.1OverviewoftheEnvironmentalRiskAssessmentApproach11.2ConceptDesign31.3ObjectivesoftheEnvironmentalRiskAssessment31.4EnvironmentalPerformanceRequirements42Method52.1Overview52.2Definitions62.3EstablishtheContext72.4IdentifyRisksandImpactPathways82.5AssessInitialRisks92.6RefineInitialRisks102.7RecommendTreatmentandIdentifyResidualRisks103RiskContext123.1KeyDesignandConstructionAssumptions123.2ContextforSpecialistStudies144RiskRegister20AppendixA–SpecificConsequenceCriteriaPage1FileMMR-AJM-PWAA-RP-NN-00081320April2016RevisionC1TheMelbourneMetroRailProject(MelbourneMetro)isoneofthelargestinfrastructureprojectstobeundertakeninAustralia.TheprojectprovidesthefoundationforfurtherexpansionofMelbourne’spublictransportnetwork,helpingtoensureMelbourneremainsoneoftheworld’smostli...