Clearing Assessment Report – CPS 818 Lloyd Street Bridge February 2021 1867 Printed copies are uncontrolled unless marked D21#189239 otherwise. Refer to iRoads for current version. Lloyd Street Bridge – February 2021 Contents 1 PURPOSE ............................................................................................................................. 4 2 SCOPE .................................................................................................................................. 4 2.1 Project Scope ........................................................................................................................ 4 2.2 Assessment Report Scope ..................................................................................................... 4 2.3 Alternatives to clearing ........................................................................................................... 7 2.4 Measures to Avoid, Minimise, Reduce and Manage Project Clearing Impacts ....................... 7 2.5 Approved Policies and Planning Instruments ......................................................................... 9 3 SUMMARY OF SURVEYS .................................................................................................. 10 3.1.1 Summary of Biological Survey ................................................................................... 10 3.2 Dieback Survey .................................................................................................................... 11 3.2.1 Summary of Dieback Survey ..................................................................................... 11 4 VEGETATION DETAILS ..................................................................................................... 12 4.1.1 Project Site Vegetation Description ........................................................................... 12 4.1.2 Vegetation Complexes and Representation............................................................... 13 5 ASSESSMENT AGAINST THE TEN CLEARING PRINCIPLES .......................................... 14 6 ADDITIONAL ACTIONS REQUIRED .................................................................................. 23 7 STAKEHOLDER CONSULTATION .................................................................................... 25 8 VEGETATION MANAGEMENT ........................................................................................... 26 9 CONSTRAINTS MAPPING ................................................................................................. 27 10 REFERENCES .................................................................................................................... 34 11 APPENDICES ..................................................................................................................... 37 Appendix A: Vegetation Management Plan .......................................................................... 38 Appendix A1 – Principal Environmental Management Requirements (PEMR’s) ................... 39 Document No: D21#189239 Page 2 of 46 Lloyd Street Bridge – February 2021 Amendments Report Document Compilation Name and Position Date Revision & Review Hannah Sullivan/Annette Latto Author: Rev 0 18/12/2020 Consultant/Associate, Strategen JBS&G Reviewer: Environmental Officer Rev 0 14/01/2021 Hannah Sullivan/Annette Latto Author: Rev 1 18/1/2021 Consultant/Associate, Strategen JBS&G Reviewer: Environmental Officer Rev 1 04/02/2021 Hannah Sullivan/Annette Latto Author: Rev 2 15/02/2021 Consultant/Associate, Strategen-JBS&G Reviewer: Environmental Officer Rev 2 18/02/2021 Reviewer: Senior Environment Officer Rev 2 19/02/2021 Author: Environmental Officer Rev 3 23/2/2021 Document No: D21#189239 Page 3 of 46 Lloyd Street Bridge – February 2021 1 PURPOSE The purpose of this Clearing Assessment Report (CAR) is to provide a report detailing the assessment of native vegetation clearing that is proposed to be undertaken using the Statewide Clearing Permit CPS 818 issued to Main Roads Western Australia (Main Roads). The CAR outlines the key activities associated with the project, the existing environment and an assessment of native vegetation clearing. This assessment provides an evaluation of the vegetation clearing impacts associated with the project using the ten Clearing Principles, and the strategies used to manage vegetation clearing. 2 SCOPE 2.1 Project Scope Project Name: Lloyd Street Bridge Project Purpose / Components: Main Roads Western Australia (Main Roads) proposed to construct a bridge over the Helena River that connects Lloyd Street, Hazelmere with Stirling Crescent, Hazelmere. The proposed clearing undertaking using CPS 818 is: The Project will require the clearing of up to 2.91 ha of native vegetation. The proposed temporary clearing undertaking using CPS 818 is: None. Project Location(s): The Project area is located on Lloyd Street SLK 0.13 and Stirling Crescent SLK 2.90, within the local government authority boundary of the City of Swan. Start: Latitude: -31.899006 Longitude: 116.009369 End: Latitude: -31.903576 Longitude: 116.007813 The location of the proposed works is shown in Figure 1. 2.2 Assessment Report Scope The assessment area, see Figure 2, is confined to a local area of a 10 km radius. Document No: D21#189239 Page 4 of 46 Lloyd Street Bridge – February 2021 Figure 1. Project Area Document No: D21#189239 Page 5 of 46 Lloyd Street Bridge – February 2021 Figure 2. Assessment Area Document No: D21#189239 Page 6 of 46 Lloyd Street Bridge – February 2021 2.3 Alternatives to clearing Alternatives to clearing for the Project were limited by the existing alignment of the connecting roads between which a bridge is proposed to be constructed. The Project has been designed to incorporate the minimum number of lanes to connect the bridge with existing roads thereby minimising the amount of clearing required. Clearing for access tracks, construction storage and stockpiling will not be required. As an alternative to temporary clearing for these purposes, they will be located within land that is already cleared. Through this minimisation, the clearing area was reduced from 5ha to 2.91 ha. Clearing of Black Cockatoo potential breeding trees was also reduced from 190 to 118 through project area minimisation. 2.4 Measures to Avoid, Minimise, Reduce and Manage Project Clearing Impacts The design and management measures implemented to avoid and minimise the clearing impacts by the project are provided in Table 1. Document No: D21#189239 Page 7 of 46 Lloyd Street Bridge – February 2021 Table 1. Measures undertaken to Avoid, Minimise, Reduce and Manage the Project Clearing Impacts Design or Management Applied to Current Discussion and Justification Measure Design Steepen batter slopes No In consultation with Traditional Owners, it has been determined that gentle sloping batters are preferred, with a gradient of approximately 1:6. The batters will be revegetated with native vegetation. Installation of safety Yes Given construction includes batters and a bridge that has been designed in consultation with Traditional barriers Owners, the installation of safety barriers will not result in a reduced clearing footprint or reduced impacts. Alignment to one side of No Not applicable due to the Project being for the construction of a new bridge connecting two recently existing road constructed roads. Alternative alignment to No The location of the bridge cannot be relocated as it is designed to connect two dead end roads. follow existing road (or) to preferentially locate within pasture or a degraded areas Installation of No The installation of kerbing is not applicable as the Project is for the construction of a bridge. kerbing Simplification of design to Yes The minimum number of lanes to connect the bridge with existing roads has been incorporated into the reduce number of lanes bridge design. and/or complexity of intersections Preferential use of existing Yes Access tracks, construction storage and stockpiling will be located in existing cleared areas. No temporary cleared areas for access clearing will be required. tracks, construction storage and stockpiling Drainage modification Yes In consultation with Traditional Owners, a culvert will be installed to ensure the continuation of water flow in areas where fill is used. Document No: D21#189239 Page 8 of 46 Lloyd Street Bridge – February 2021 2.5 Approved Policies and Planning Instruments The clearing of native vegetation in Western Australia is regulated under the EP Act and the Environmental Protection (Clearing of Native Vegetation) Regulations 2004 (Clearing Regulations). In addition to the matters considered in accordance with section 51O of the EP Act (see Section 1.3), Main Roads has also had regard to the below instruments. Other Legislation of relevance for assessment of clearing and planning/other matters • Swan and Canning Rivers Management Act 2006 (SCRM Act) • Biodiversity Conservation Act 2016 (WA) (BC Act) • Conservation and Land Management Act 1984 (WA) (CALM Act) • Environment Protection and Biodiversity Conservation Act 1999 (Cth) (EPBC Act) • Planning and Development Act 2005 (WA) (P&D Act) • Soil and Land Conservation Act 1945 (WA) • Rights in Water and Irrigation Act 1914 (WA) • Aboriginal Heritage Act 1972 (WA) Environmental Protection Policies • Environmental Protection (Western Swamp Tortoise Habitat) Policy 2011 Other Relevant policies and guidance documents: • Environmental Offsets Policy (Government of Western Australia, 2011) • A guide to the assessment