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Desalinated water delivery systemPreferred projectAppendices A & B report Volume 1 Main Document,August 2007

Contents1. 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2. 2.1 2.2 2.3 2.4 2.5 2.6 2.7 3. 3.1 3.2 3.3 4. 4.1 4.2 4.3 5. 5.1 Introduction Overviewoftheproject RoleandobjectivesofthePreferredProjectReport StructureofthePreferredProjectReport Submissions Issueidentification TheDesalinatedWaterDeliverySystemasexhibited Summaryofrefinementsand/orchangestotheproject sinceexhibitionoftheEnvironmentalAssessment Approvalprocess 1.1 1.1 1.2 1.2 1.3 1.4 1.6 1.6 1.7

Refinementsandchangestotheprojectsinceexhibition oftheEnvironmentalAssessment 2.1 Introduction 2.1 Refinements1and2:theroutebetweenthedesalination plantandSilverBeach,Kurnell 2.7 Refinement3:routebetweenSilverBeachandKyeemagh2.13 Refinements49:theroutebetweenKyeemaghand Erskineville Changes15:landbasedconstructionmethods Changes6-13:theconstructionmethod acrossBotanyBay Processforselectingtheoptiontobeconstructedfor sectionswhererefinementsand/orchangesare inadditiontotheprojectdescribedin theEnvironmentalAssessment TheAssessmentProcess Summaryofassessmentprocess Summaryofissuesraisedontheassessmentprocess 2.16 2.30 2.38

2.52 3.1 3.1 3.2

Responsetoissuesraisedinsubmissionsrelatingtothe assessmentprocess 3.2 TheConsultationProcess ExhibitionoftheEnvironmentalAssessment Summaryofissuesraisedrelatingtothe consultationprocess Responsetoissuesraisedregardingthe consultationprocess PlantsitetoSilverBeach SummaryofthePreferredProject 4.1 4.1 4.4 4.4 5.1 5.1

Contents

a

5.2 5.3 6. 6.1 6.2 6.3 7. 7.1 7.2 7.3 8. 8.1 8.2 8.3 9. 9.1 9.2 9.3 10. 10.1 11. 11.1 11.2 12.

Summaryofissuesraisedrelatedtoconstructionofthe deliverysystembetweentheplantsiteandSilverBeach Responsetoissuesraisedrelatedtoconstructionofthe deliverysystembetweentheplantsiteandSilverBeach SilverBeachtoKyeemagh SummaryofthePreferredProject Summaryofissuesraisedrelatedtoconstructionofthe deliverysystembetweenSilverBeachandKyeemagh Responsetoissuesraisedrelatedtoconstructionofthe deliverysystembetweenSilverBeachandKyeemagh KyeemaghtoErskineville SummaryofthePreferredProject Summaryofissuesraisedrelatedtoconstructionofthe deliverysystembetweenKyeemaghandErskineville Responsetoissuesraisedrelatedtoconstructionofthe deliverysystembetweenKyeemaghandErskineville Operationalissues SummaryofthePreferredProject Summaryofissuesraisedrelatedtooperationofthe deliverysystembetweenKyeemaghtoErskineville Responsetoissuesraisedrelatedtooperationofthe deliverysystem ConsistencyAssessment Overview ConsistencywiththeConceptApproval Generalconsistencywiththescopeandintent oftheConcept Thepreferredproject DescriptionoftheprojectforwhichProjectApproval issought StatementofCommitments SummaryoftheEnvironmentalAssessment AmendedStatementofCommitments References

5.1 5.2 6.1 6.1 6.1 6.2 7.1 7.1 7.2 7.2 8.1 8.1 8.1 8.1 9.1 9.1 9.1 9.3 10.1 10.1 11.1 11.1 11.1 12.1

TablesTable 2.1 Table 2.2 Table 4.1 Table 4.2 Table 4.3 Table 5.1 Table 5.2 Table 5.3bDesalinatedWaterDeliverySystemPreferredProjectReport

Summary of refinements and changes to the project since exhibition of the Environmental Assessment Indicative construction noise mitigation measures Location of community information days Dates advertisements were placed in local publications Dates advertisements were placed in metropolitan publications Predicted noise levels from the receival pit at the intersection of Dampier Street and Tasman Street Indicative construction noise mitigation measures Construction noise from the launch pit at Silver Beach

2.3 2.12 4.2 4.4 4.4 5.6 5.6 5.7

Table 5.4 Table 5.5 Table 5.6 Table 6.1 Table 6.2 Table 6.3 Table 7.1 Table 7.2 Table 7.3 Table 7.4 Table 9.1 Table 10.1 Table 11.1

Australian standards for vibration levels that may disturb occupants 5.8 Indicative vibration levels likely to be generated during construction Regenerated noise criteria Sediment transport rates and potential shoreline change at Towra Beach Construction noise levels at the Silver Beach and Kyeemagh compounds Construction noise levels for the dredge and lay barge operation across Botany Bay Results of contaminant testing at Muddy Creek and Cooks River Construction noise from the launch pit at Kyeemagh Indicative construction noise levels in the vicinity of Kogarah Golf Course Environmental assessment requirements Summary of the route Statement of Commitments 5.9 5.10 6.4 6.10 6.11 7.4 7.8

Construction noise levels at Sydney Park and Erskineville 7.8 7.10 9.2 10.2 11.3

FiguresFigure 2-1 Figure 2-2 Figure 2-3 Figure 2-4 Figure 2-5 Figure 2-6 Figure 2-7 Figure 2-8 Figure 6-1 Refinement of the route and changed construction method between the plant site and Silver Beach Refinement of the route and changed construction method between Silver Beach and Kyeemagh Refinement of the route and changed construction method between Kyeemagh and Erskineville Typical trenching operation in areas with substantial space restrictions Typical trenching operating in open space Indicative lay barge operation Indicative trench across Botany Bay Indicative temporary exclusion zone around works in Botany Bay Seagrass communities off Silver Beach 2.7 2.14 2.17 2.36 2.37 2.45 2.46 2.47 6.3 10.4 10.5 10.6

Figure 10-1 Preferred project between the desalination plant and Silver Beach Figure 10-2 Preferred project across Botany Bay Figure 10-3 Preferred project between Kyeemagh and Erskineville

AppendicesA B The delivery system as exhibited Summary of the issues database

Contents

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1. Introduction1.1 OverviewoftheprojectTheproponent,SydneyWaterCorporation(SydneyWater),isseekingProject Approvaltoconstruct,operateandmaintaininfrastructuretodeliverdesalinated waterfromthedesalinationplantatKurnelltoSydneysexistingwaterdistribution infrastructuresystem.ThiswillallowdeliveryofbulkdrinkingwatertoSydneys distributionsystem. Thedesalinatedwaterdeliverysystem(theproject)involvesalandpipelinefrom thedesalinationplanttoSilverBeachinKurnell;twoparallelpipelinesacross BotanyBaytoKyeemagh;andalandpipelinefromKyeemaghtotheproposed waterdistributionsystemconnectionpoint,Shaft11ContheCityTunnelat BridgeStreet,Erskineville. Theprojectincludestemporarylaydownareas,constructioncompounds,jetties andworkingplatformsforuseduringconstructionandtemporaryconnectionto thelocalelectricitynetworkforconstructionoperations.Italsorequiresancillary featurestoensuresafeoperationandmaintenanceoftheinfrastructure.These include,butarenotlimitedto,airandscourvalves,scourdrainlines,isolation valves,pressurereleasevalves,accesschambers,crossconnectionpipework, boosterpumpstations,surgeprotectionequipment,andchlorineinjection facilities. TheprojectisanessentialcomponentoftheoverallconceptplanforSydneys desalinationprojectthathasbeendeclaredcriticalinfrastructureandapprovedby theMinisterforPlanningunderPart3AoftheNSW Environmental Planning and Assessment Act 1979(EP&AAct).InNovember2006,SydneyWaterreceived ConceptApprovalforthedesalinationprojectasawholeandProjectApproval forallcomponentswiththeexceptionofthedeliverysystem.ProjectApprovalis requiredtoallowconstructionofthedeliverysystemtocommence. InApril2007,theNSWDepartmentofPlanningexhibitedanEnvironmental AssessmentoftheDesalinatedWaterDeliverySystem.TheEnvironmental AssessmentrespondedtotherequirementsoftheDirector-Generalofthe DepartmentofPlanning. ThisPreferredProjectReportrespondstoissuesraisedinsubmissionsmadeto theDepartmentofPlanningduringexhibitionoftheEnvironmentalAssessment. AsummaryoftheissuesraisedinthesesubmissionsiscontainedinAppendix B.TheseresponsesdrawontheEnvironmentalAssessment,newinformation gainedsinceexhibitionoftheEnvironmentalAssessment,andchanges inresponsetopublicinputs.Thisreport,togetherwiththeEnvironmental Assessment,willassisttheDepartmentofPlanningtoassessSydneyWaters applicationforProjectApproval.

Introduction

1.1

1.2 RoleandobjectivesofthePreferredProject ReportAsstatedinSection3.1.3,thePreferredProjectReportwaspreparedfollowing receiptofadvicefromDirector-GeneraloftheDepartmentofPlanningon 9July2007whichrequiredSydneyWaterrespondtoissuesraisedinthe submissionsby14August2007.Iftheresponserequiredchangestotheproject tominimiseitsenvironmentalimpactoraffectedthestatementofcommitments, theDirector-Generalrequiredapreferredprojectreporttobepreparedand/orthe statementofcommitmentstoberevised. SydneyWaterhasrefinedandchangedtheprojectfollowingconsiderationof issuesraisedinsubmissionsandreceiptofinformationarisingfromadditional environmentalandengineeringinvestigations.TheStatementofCommitments hasbeenrevisedtoreflecttheserefinementsandprojectchanges. InaccordancewiththeDirector-Generalsaboverequirements,thisPreferred ProjectReporthasbeenpreparedtorespondtotheissuesraisedinsubmissions andidentifyrefinementsandchangestotheprojectandStatementof Commitments.Themethodforidentifyingandaddressingissueswasdiscussed with,andagreedtoby,theDepartmentofPlanning.

1.3 StructureofthePreferredProjectReportChapter1Introduction Thischapter: IntroducesthePreferredProjectReport; Describeshowissueswereidentifiedfrombothformalandinformal submissions; SummarisestheprojectpresentedintheEnvironmentalAssessment;and OutlineschangesthathavebeenmadesincetheEnvironmentalAssessment wascompleted. Chapter2Changesand/orrefinementstotheprojectsinceexhibitionofthe EnvironmentalAssessment Thischapterdescribeschangesand/orrefinementsthathavebeenmadeto theprojectsinceexhibitionoftheEnvironmentalAssessmentasaresultof publicsubmissions,ortheresultsofadditionalengineeringandenvironmental investigations.Itdescribesthechangestotheproject,aswellasthechangesto theenvironmentalimpactassessmentdetailedintheEnvironmentalAssessment. Chapters3and4Backgroundchapters Thesechaptersrespondtoissuesraisedduringtheconsultationperiod,butwhich arenotstrictlypartoftheprojectassessmentprocess.Theseis