The Greater Bilby Management Plan
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Main Roads WA Cape Leveque Road Upgrade Greater Bilby Management Plan October 2014 Table of contents 1. Introduction ............................................................................................................................... 1 1.1 Background ..................................................................................................................... 1 1.2 Objectives of the management plan ................................................................................. 1 1.3 Project area ..................................................................................................................... 1 1.4 Limitations to management plan ...................................................................................... 2 2. Ecology of the Bilby ................................................................................................................... 4 3. Potential threats to the Bilby from the Project............................................................................. 5 3.1 Direct loss of habitat ........................................................................................................ 5 3.2 Injury and mortality during construction phase ................................................................. 5 3.3 Other impacts during construction ................................................................................... 5 3.4 Mortality due to vehicle collision (road kill) ....................................................................... 5 3.5 Cumulative impacts of the Project .................................................................................... 6 4. Management of impacts ............................................................................................................ 7 4.1 Approach......................................................................................................................... 7 4.2 Guiding documents and principles ................................................................................... 8 4.3 Project management ....................................................................................................... 9 4.4 Summary of impact management measures .................................................................... 9 4.5 Design phase ................................................................................................................ 10 4.6 Construction phase ....................................................................................................... 11 4.7 Post- construction phase ............................................................................................... 12 5. References ............................................................................................................................. 22 Table index Table 1 Summary of impact management measures. .......................................................................... 9 Table 2 Impact management - design phase. .................................................................................... 13 Table 3 Impact management - construction phase. ............................................................................ 15 Table 4 Impact management - post-construction (operational phase). ............................................... 20 Appendices Appendix A Figures Appendix B Cape Leveque Road - Greater Bilby Handling and Relocation Protocols GHD | Report for Main Roads WA - Cape Leveque Road Upgrade, 61/31143 | i 1. Introduction 1.1 Background Main Roads Western Australia (Mains Roads) commissioned GHD to undertake a targeted fauna survey of the Greater Bilby to assess the potential impacts associated with the Stage 3 improvement works along the Cape Leveque Road (SLK 25 to 102.6) in November 2012. This study (GHD 2013) concluded the Project has the potential to significantly impact on the Greater Bilby (Macrotis lagotis). The Bilby is listed as Vulnerable under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) and Vulnerable under the Western Australian Wildlife Conservation Act 1950 (WC Act). 1.2 Objectives of the management plan For the purpose of this management plan the ‘Project’ is defined as the upgrade of the unsealed section of the Cape Leveque Road between SLK 25 to 102.6. It is anticipated that construction of the new road will be undertaken by Main Roads in stages during the 2015- 2019 dry seasons (May to October), depending on available funding and whether environmental approval is given to proceed. The objectives of this Management plan are to: y Minimise impact to individual Bilby and populations of the species within and adjacent to the Project area during construction and once the road is established (operational phase) y Minimise impact to the habitat of the Bilby within and adjacent to the Project area during construction and operational phase y Maintain connectivity for the Bilby either side of the Project area during the operation phase of the Project 1.3 Project area The locality of the Project area is shown in Figure 1 (Appendix A). The Project area for this assessment lies between SLK 25 and SLK 102.6 on the Cape Leveque road. The proposed Impact area (area to be cleared for road construction) will include: y The main road alignment (approximately 77.6 km long x 20-30 m wide), proposed to be located generally parallel to the existing alignment, which covers an area of 172.05 ha. This area includes an intersection and side road at SLK 58; approximately 2 km long x 20-30 m wide, totalling approximately 4 ha. y 36 borrow pits which cover an area of 60.95 ha. y Offshoot drains that will be located approximately every 170m. Each will cover an area of approximately 500m2, totalling approximately 22 ha. y Access tracks totalling approximately 5 ha. y 20% contingency amount for any required additional works equalling 52 ha. The proposed Impact area is 297 ha, with approximately 15 ha of overlap between the road alignments and proposed borrow pits. Main Roads will revegetate the temporary works areas, as well as land on part of the existing Cape Leveque Road, which will not be required for the new road. Areas to be revegetated are: x Approximately 50% of the existing (to be redundant) Cape Leveque Road, totalling 38 ha x 36 borrow pits, totalling 61 ha GHD | Report for Main Roads WA - Cape Leveque Road Upgrade, 61/31143 | 1 x Temporary access tracks, totalling 5 ha A total of 104 ha is therefore planned to be revegetated. Previous project studies This management plan draws information from various sources including relevant documents relating to legislation, publically available databases and previous studies by GHD and other consultants relevant to the Project area. These documents were also reviewed to understand the Project specific potential impacts to the Bilby and the implications resulting from clearing activities associated with the proposed Project. The documents reviewed included: y GHD (2013) Report for Cape Leveque Road Targeted Greater Bilby Assessment y GHD (2012) Report for Broome to Cape Leveque Road (Stage 3 SLK 12.7 – 102.6) Environmental Impact Assessment and Environmental Management Plan y AECOM (2010) James Price Point LNG Precinct Access Road Environmental Impact Assessment and Environmental Management y GHD (2007a) Report for Broome to Cape Leveque Road (Stage 3: SLK 12.7 102.6). Environmental Impact Assessment and Environmental Management Plan. Main Roads WA, Kimberley y GHD (2007b) Report for Broome to Cape Leveque Road (Stage 3: SLK 12.7 - 102.6). Environmental Impact Assessment and Environmental Management Plan, November 2007 – Field Surveys and Desktop Assessment April 2012 – Updated Desktop Assessment. Main Roads Western Australia y SKM (2012). Browse Bilby Review, Consolidated Information Relating to the Occurrence of the Bilby (Macrotis lagotis) in the Vicinity of the Browse LNG Precinct and Broadly on the Dampier Peninsular y Southgate, R. (2012). Peer review of the Browse Bilby Review, a report detailing the consolidated information relating to the occurrence of the Bilby Macrotis lagotis near the proposed Browse LNG Precinct (close to James Price Point) and more broadly on the Dampier Peninsula. By Envisage Environmental Services y Pavey, C. (2006). National Recovery Plan for the Greater Bilby Macrotis lagotis. Northern Territory Department of Natural Resources, Environment and the Arts 1.4 Limitations to management plan This report has been prepared by GHD Pty Ltd (GHD) for Main Roads and may only be used and relied on by Main Roads for the purpose agreed between GHD and the Main Roads as set out in section 1.2 of this report. GHD otherwise disclaims responsibility to any person other than Main Roads arising in connection with this report. GHD also excludes implied warranties and conditions, to the extent legally permissible. The services undertaken by GHD in connection with preparing this report were limited to those specifically detailed in the report and are subject to the scope limitations set out in the report. The opinions, conclusions and any recommendations in this report are based on conditions encountered and information reviewed at the date of preparation of the report. GHD has no responsibility or obligation to update this report to account for events or changes occurring subsequent to the date that the report was prepared. 2 | GHD | Report for Main Roads WA - Cape Leveque Road Upgrade, 61/31143 The opinions, conclusions and any recommendations in this report are based