Port of Townsville Limited Long‐Term Maintenance Dredging Management Plan for Port of Townsville and Port of Lucinda 2019 – 2029 POT 2128 REVISION 3 Document Control Sheet Revision history Revision No. Effective Date Comments 0 17/12/2018 First Published Administrative update (typos, alignments); modification of 1 12/03/2019 Figure 16 layout; addition of Figure 17b; addition of Contingency Planning to Section 5.3 Reformatting and minor administrative updates following 2 11/03/2020 first informal review; addition of Social Values to Sections 3 and 12 Update to new Port branding; modification of Section 1 in line with DTMR comments; updates following expiry of 3 11/09/2020 Section 19 Deed of Agreement and issue of master plan; addition of new research and monitoring results © Port of Townsville Limited Document Type Plan Document No. POT 2128 A.C.N. 130 077 673 Revision 3 Only electronic copy on server is controlled. To ensure paper copy is current, check Date 11/09/2020 revision number against entry in Qudos ‐ Master Document List Page Page 2 of 107 CONTENTS 1 Introduction ............................................................................................................................................. 5 Schedule 1 – Port of Townsville ....................................................................................................................... 17 2 Port Locality, Setting and Shipping ........................................................................................................ 17 3 Port of Townsville Environmental Values .............................................................................................. 26 4 Consultation and Key Issues .................................................................................................................. 37 5 Port Sediment Characteristics ............................................................................................................... 39 6 Risk Assessment Framework ................................................................................................................. 58 7 Identification and Treatment of Key Risks ............................................................................................. 67 8 Environmental Management ................................................................................................................. 69 9 Monitoring Framework .......................................................................................................................... 79 10 Performance Review .............................................................................................................................. 82 Schedule 2 – Port of Lucinda ............................................................................................................................ 84 11 Port Locality, Setting and Shipping ........................................................................................................ 84 12 Port of Lucinda Environmental Values .................................................................................................. 88 13 Consultation and Key Issues .................................................................................................................. 94 14 Port Sediment Characteristics ............................................................................................................... 95 15 Risk Assessment Framework ................................................................................................................. 96 16 Identification and Treatment of Key Risks ............................................................................................. 97 17 Environmental Management ................................................................................................................. 98 18 Monitoring Framework .......................................................................................................................... 99 19 Performance Review ............................................................................................................................ 100 20 Reference Material and Supporting Documentation .......................................................................... 102 21 Definitions and Acronyms.................................................................................................................... 105 Tables Table 1: Current Maintenance Dredging Approvals for the Port of Townsville................................................ 9 Table 2: Approved Design Depths for All Lawful Structures at the Port of Townsville .................................. 23 Table 3: Threatened Bird Species of Cleveland Bay ........................................................................................ 33 Table 4: Drains and Creeks Discharging to Cleveland Bay (TCC Stormwater GIS Layer) ................................. 43 Table 5: Commonwealth Dredging Approvals since 1988, for Both Maintenance and Capital Dredging ...... 45 Table 6: Historic and Predicted Maintenance Dredging Volumes (Historic 2007‐2018, Predicted 2019‐2028) ......................................................................................................................................................................... 46 Table 7: Maintenance Dredge Schedule – Sea Placement 10‐year Plan ........................................................ 47 Table 8: Key Implications for Each Maintenance Dredging/Placement Alternative ....................................... 55 Table 9: Description of Impact Assessment Threshold Values ....................................................................... 60 Table 10: Risk Assessment for the Port of Townsville, to / from Maintenance Dredging within Cleveland Bay ......................................................................................................................................................................... 64 Table 11: The Last 19 Years of Long and Short‐Term Research Programs at the Port of Townsville ............. 68 Table 12: Comparison of Dredge Equipment Production Rates at the Port of Townsville ............................. 77 Table 13: Monitoring Programs at the Port of Townsville .............................................................................. 79 Table 14: Research and Monitoring Programs 2020‐2025 ............................................................................. 80 Table 15: Monitoring Programs at the Port of Lucinda .................................................................................. 99 © Port of Townsville Limited Document Type Plan Document No. POT 2128 A.C.N. 130 077 673 Revision 3 Only electronic copy on server is controlled. To ensure paper copy is current, check Date 11/09/2020 revision number against entry in Qudos ‐ Master Document List Page Page 3 of 107 Figures Figure 1: Port of Townsville and Port of Lucinda .............................................................................................. 5 Figure 2: The Long‐Term Maintenance Dredging Management Framework (DTMR 2016) ............................. 7 Figure 3: Port of Townsville, Port Limits within Cleveland Bay ....................................................................... 13 Figure 4: Cleveland Bay Maintenance Dredge Material Placement Area ....................................................... 13 Figure 5: Port Governance Structure Flow Chart (as per Port Website 2020) ................................................ 14 Figure 6: The Port of Townsville within Cleveland Bay ................................................................................... 18 Figure 7: Snapshot for the 2018‐2019 Financial Year (2018/2019 Annual Report, Port 2019) ...................... 19 Figure 8: Lawful Structures within the Port of Townsville (DES Allocation Notice CA0000014) .................... 21 Figure 9: Lawful Structures Within the Port of Townsville and Cleveland Bay (DES Allocation Notice CA0000014) ...................................................................................................................................................... 22 Figure 10: Onshore Maintenance Dredge Material Placement Areas (DES Allocation Notice CA0000014) .. 24 Figure 11: Platypus and Sea Channel Typical Cross Section ........................................................................... 25 Figure 12: Ross River Channel Cross Section .................................................................................................. 25 Figure 13: Reef Communities around Magnetic Island (extract from Port Expansion AEIS, 2016) ................ 28 Figure 14: Coastal Habitats in and around Cleveland Bay .............................................................................. 35 Figure 15: Quantitative Summary of Sediment Resuspension at Port of Townsville (BMT WBM 2018) ....... 38 Figure 16a: Bathymetry Chart of Cleveland Bay AUS 827 (2004) ................................................................... 40 Figure 17: Risk Assessment Process ................................................................................................................ 58 Figure 18: El Nino Year – Modelled Zones of Impact for a Typical Dredging Period ...................................... 61 Figure 19: El Nino Year – Modelled Zones of Impact over a 12‐month Period .............................................. 61 Figure 20: La Nina Year – Modelled Zones of Impact for a Typical Dredging Period .....................................