Fremantle Port Inner Harbour and Channel ... - Fremantle Ports

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AuditCode801:M6.4Subject Action How Evidence Satisfy Advice Phase When Status Ref.Marine WaterQuality andSedimentQualityMonitoring shall be conducted for the duration of thedredging and disposal program and for six monthsfollowing completion of the program, or until it hasbeen demonstrated that the High EcologicalProtection values have re-established adjacent toRous Head. The results of monitoring shall bereported to the CEO of the Department ofEnvironment and ConservationThe Compliance AssessmentReport shall include the initialpredictions of the proponent asdescribed in the PublicEnvironmental Review andproponent’s response tosubmissions, and an analysis ofhow, and to what extent theresults of monitoring varied fromthe predictionsComplianceAssessment Reportsubmitted to theCEO of the OEPA.CEO OverallWithin two months ofcompletion of themonitoring and analysisCompletedCompliance Assessment ReportPhase 2 compared monitoringresults against the initialpredictions as described in thePublic Environmental Review andproponent’s response tosubmissionsComplianceAssessmentReport: Phase 1(Oceanica 2010b)ComplianceAssessmentReport: Phase 2(Oceanica 2011)8 Oceanica: Fremantle Ports: Fremantle Port Inner Harbour and Channel Deepening, Compliance Assessment Report 2012
3. Annual Survey Footprint of Offshore Disposal GroundThe first annual survey of the offshore spoil ground was undertaken in December 2011.Bathymetric data from this survey shows a disposal area with relatively low relief (16-20 m)throughout the whole area (Figure 3.3). The survey results show very similar relief to the2010 bathymetric survey.Changes in bathymetry from December 2010 until December 2011 show small (-0.2 to0.2 m) amounts of redistribution of seabed materials (Figure 3.2). The changes appear to befrom the settling or redistribution of materials from high spots in topography to lower 'trough'areas. As the area is within the shipping anchorage it is probable that this is due toanchoring activities. The majority of the map shows areas with fill volumes (decreaseddepth) and very limited areas of excavation (increased depth), again suggesting that thematerials deposited within the footprint have settled and are remaining within the footprint.Surface to surface volume calculations showed a net fill volume of 36,635 m 3 in the disposalgrounds area (Appendix B). This suggests that materials disposed of at the disposal groundsare remaining within the disposal ground footprint as a greater amount of materials are beingdeposited (fill) compared to materials being eroded away (excavation). The bathymetry datafor December 2010 shows an Offshore Disposal Area with relatively low relief (16-20 m)throughout the area, although a small area of depression (to 22 m depth) near the southwesterncorner was recorded (Figure 3.1).Oceanica: Fremantle Ports: Fremantle Port Inner Harbour and Channel Deepening, Compliance Assessment Report 2012 9
Page 1: Fremantle Port Inner Harbour and Ch
Page 5 and 6: Client: Fremantle PortsDocument his
Page 7 and 8: ContentsExecutive Summary .........
Page 9 and 10: Executive SummaryProject StatusFrem
Page 11 and 12: 1. Introduction1.1 Background and p
Page 13 and 14: Figure 1.1Dredge areas, reclaimed a
Page 15 and 16: Table 2.2 Audit tableAuditCode801:M
Page 17: AuditCodeSubject Action How Evidenc
Page 21 and 22: Figure 3.2 Differences in bathymetr
Page 23: A one in five year storm event (as
Page 26 and 27: 5. SummaryThere were zero non-compl
Page 29: 6. ReferencesDEC (2009) Guidelines
Page 33 and 34: STATUS OF THIS DOCUMENTThis documen
Page 35 and 36: Report shall be 15 months from the
Page 37 and 38: 6-3 If the Water Quality Monitoring
Page 39: Table 2: Summary of key proposal ch
Page 47: Fremantle Ports1 Cliff StreetFREMAN
Page 51: Fremantle Ports - Gage RoadsOffshor
Page 55: Client: Fremantle PortsRevisions hi
Page 58 and 59: Figure 1.1Figure 1.2Figure 1.3Figur
Page 61 and 62: Executive SummaryOceanica Consultin
Page 63 and 64: 1. Introduction1.1 BackgroundThe Ga
Page 65 and 66: Figure 1.2Gage Roads habitat map in
Page 67 and 68: Figure 1.3Bathymetry for Gage Roads
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Figure 1.4 Benthic habitat within G
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2. Methods2.1 Benthic habitat surve
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2.2 Seagrass recovery2.2.1 Permanen
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Table 2.1Seagrass sites, zone desig
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Table 2.3Limits of Reporting (LOR)
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Sediment nutrients and metalsNutrie
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3. Results3.1 Benthic habitat mapA
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Figure 3.2 Benthic habitat post dis
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3.2 Seagrass recovery3.2.1 Seagrass
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Table 3.4PERMANOVA table of results
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Table 3.7Data ranges and detection
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The bathymetry data for December 20
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Bathymetry data from December 2011
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4. DiscussionWithin the Offshore Di
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6. AcknowledgementsThis report was
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Appendix AGeo Oceans Report
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Benthic Habitat AssessmentTowed Vid
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1. IntroductionGeo Oceans was commi
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Table 2 Tide predictions for the Po
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Figure 1 Substrate and biota habita
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Figure 2 Depth data collected durin
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Appendix 1: Video analysis biologic
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Appendix BGeoImage Report
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Table of ContentsIntroduction......
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Figure 1: Study site overview for s
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Project 1Project 1 aimed to generat
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Figure 2: Tier 1 classification res
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Limitations and assumptionsA number
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Appendix CSeagrass Monitoring Site
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Appendix ESeagrass Shoot Count Data
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Appendix GSediment Field Log
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Appendix INutrient and Metals Data
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MarineandFreshwaterResearchLaborato
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