Monaro - Hume Upgrade Lanyon Drive Intersection Biodiversity Assessment Report
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Monaro - Hume Upgrade Lanyon Drive Intersection Biodiversity Assessment Report IA224400-RP-EN-074_Lanyon Drive_Biodiversity Assessment Report_Draft | Rev03 12 August 2020 Transport Canberra and City Services Biodiv ersity Assessment Rep ort Trans por t C anbe rra an d City Serv ices Biodiversity Assessment Report Monaro - Hume Upgrade Lanyon Drive Intersection Project No: IA224400 Document Title: Biodiversity Assessment Report Document No.: IA224400-RP-EN-074_Lanyon Drive_Biodiversity Assessment Report_Draft Revision: Rev03 Date: 12 August 2020 Client Name: Transport Canberra and City Services Project Manager: Randy Akroush Author: Brenton Hays File Name: IA224400-RP-EN-074_Lanyon Drive_Biodiversity Assessment Report_Draft.docx Jacobs Group (Australia) Pty Limited ABN 37 001 024 095 Level 4, 12 Stewart Avenue Newcastle West NSW 2302 Australia PO Box 2147 Dangar NSW 2309 Australia T +61 2 4979 2600 F +61 2 4979 2666 www.jacobs.com © Copyright 2019 Jacobs Group (Australia) Pty Limited. The concepts and information contained in this document are the property of Jacobs. Use or copying of this document in whole or in part without the written permission of Jacobs constitutes an infringement of copyright. Limitation: This document has been prepared on behalf of, and for the exclusive use of Jacobs’ client, and is subject to, and issued in accordance with, the provisions of the contract between Jacobs and the client. Jacobs accepts no liability or responsibility whatsoever for, or in respect of, any use of, or reliance upon, this document by any third party. Document history and status Revision Date Description Author Reviewed Approved 01 18/03/2020 Draft Biodiversity Assessment Report B. Hays C. Thomson R. Thomson 02 6/04/2020 Draft Biodiversity Assessment Report – Amendments B. Hays C. Thomson R. Thomson 03 12/08/2020 Draft Biodiversity Assessment Report – Amendments B. Hays C. Thomson R. Akroush requested by Conservator of Flora and Fauna IA224400-RP-EN-074_Lanyon Drive_Biodiversity Assessment Report_Draft i Biodiversity Assessment Report Contents Executive Summary ............................................................................................................................................................ iii 1. Introduction ............................................................................................................................................................ 2 1.1 Project background and options assessment .............................................................................................................. 2 1.2 Legislation ................................................................................................................................................................................. 2 1.3 Assessment objectives .......................................................................................................................................................... 2 2. Methods ................................................................................................................................................................... 3 2.1 Literature review and database search ........................................................................................................................... 3 2.2 Site inspection .......................................................................................................................................................................... 3 2.3 Potential occurrence of threatened biodiversity ........................................................................................................ 4 2.4 Literature review ...................................................................................................................................................................... 4 3. Existing environment ............................................................................................................................................ 8 3.1 Vegetation ................................................................................................................................................................................. 8 3.2 Threatened Ecological Communities ........................................................................................................................... 10 3.2.1 Yellow Box – Red Gum Grassy Woodland .................................................................................................................. 10 3.2.2 Natural Temperate Grassland ......................................................................................................................................... 10 3.3 Threatened plants ............................................................................................................................................................... 11 3.4 Threatened animals ............................................................................................................................................................ 12 4. Matters of National Environmental Significance ........................................................................................ 17 4.1 Threatened ecological communities (EPBC Act)..................................................................................................... 17 4.2 Threatened plant species (EPBC Act) .......................................................................................................................... 17 4.3 Threatened fauna species (EPBC Act) ......................................................................................................................... 17 4.4 Migratory species (EPBC Act) .......................................................................................................................................... 18 5. Assessment of impact significance................................................................................................................. 19 6. Conclusions .......................................................................................................................................................... 30 7. References ............................................................................................................................................................ 31 Appendix A. Likelihood of occurrence assessment Appendix B. Assessment of Significance (EPBC Act) IA224400-RP-EN-074_Lanyon Drive_Biodiversity Assessment Report_Draft ii Biodiversity Assessment Report Executive Summary Biodiversity constraints assessments were prepared as part of Phase 1 and Phase 2 of the Monaro Highway Upgrade Program project in 2019, which involved an assessment of different intersection options at Isabella Drive and Lanyon Drive. The purpose of this report is to assess potential impacts of the proposed Lanyon Drive intersection (Option 3) on biodiversity listed under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) or ACT Nature Conservation Act 2014 (NC Act). The assessment process has included a review of existing literature and searches of all relevant databases. Desktop assessment informed a series of site inspections undertaken along the length of the proposal to ground-truth and record ecological values. These field investigations were confined to public land within the existing Monaro Highway, David Warren Road, Lanyon Drive corridors and Defence land between Lanyon Drive and the helicopter base (refer Figure 2-1). The project study area is located predominantly within the designated land boundaries of the existing Monaro Highway. The landscape has been historically modified for the highway and rural activities and as a result is disturbed and predominately cleared of native remnant vegetation. Existing vegetation within the study area is made up of planted native and exotic trees and large areas of exotic grassland, dominated by the exotic species Eragrostis curvula (African Lovegrass) and Phalaris aquatica (Phalaris). Exotic grassland occurs almost continuously across the study area along the road verges and as groundcover under the planted vegetation. Riparian and wetland vegetation is present along Dog Trap Creek and artificial drainage lines. Dog Trap Creek is a third-order stream (Strahler) that runs through the study area near the existing Lanyon Drive intersection. The following vegetation types are located within the proposal study area and may be impacted up to their occurrence within Designated Land in the road reserve: ▪ Substantially Modified Lowland Woodland (Eucalyptus melliodora – E. blakelyi Tableland Grassy Woodland) – no direct impact ▪ Mixed Native Tree Plantings – 10. 95 ha removal ▪ Natural Temperate Grassland – no direct impact ▪ Native Grassland – no direct impact ▪ Wetland habitat – 0.19 ha removal ▪ River Oak tree (Native) plantings – 0.46 ha removal ▪ Exotic plantings – 4.64 ha removal ▪ Exotic grassland – 17.1 ha removal No threatened ecological communities will be directly impacted by the proposal. Natural Temperate Grassland is known to occur in the West Jerrabomberra Nature Reserve to the west of the study area. Three floristic plots were undertaken in grassland within the study area. These plots contained a dominance of exotic species and did not meet the condition criteria for Natural Temperate Grassland listed under the NC Act or EPBC Act. Similarly, none of the vegetation meets the criteria for listing as Box-Gum Woodland under either the EPBC Act or