Manuwarra Red Dog Highway S38 Referral Supporting Information
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Manuwarra Red Dog Highway s38 Referral Supporting Information Revision | 1 26 November 2020 Main Roads Western Australia s38 R efe rral Sup po rti ng In fo rmatio n Main Roa ds Weste rn A us trali a s38 Referral Supporting Information Manuwarra Red Dog Highway Project No: IW217863 Document Title: s38 Referral Supporting Information Revision: 1 Document Status: Final Date: 26 November 2020 Client Name: Main Roads Western Australia Project Manager: Lisa Boulden Author: Lisa Boulden & Claire Beckett File Name: MRDH-4_EPA_ReferralSupportingInformationDocument_Rev1_Tracked_2020-11- 25.docx Jacobs Group (Australia) Pty Limited ABN 37 001 024 095 8th Floor, Durack Centre 263 Adelaide Terrace PO Box H615 Perth WA 6001 Australia T +61 8 9469 4400 F +61 8 9469 4488 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 Checked Reviewed Approved A 07/07/20 Draft for Client Review CB LB PS ADV B 11/08/20 Draft for Client Review LB ADV PS ADV C 16/09/20 Final Draft for Client Review LB ADV PS ADV 0 06/10/20 Final for Issue LB ADV PS ADV 1 26/11/20 Revised following EPA Comments HN LB PS ADV i s38 Referral Supporting Information Contents 1. Introduction ............................................................................................................................................................ 1 Background ............................................................................................................................................................................... 1 Purpose and Scope................................................................................................................................................................. 1 Proponent Details ................................................................................................................................................................... 2 2. Revised Proposal Description ............................................................................................................................. 3 Approved Proposal................................................................................................................................................................. 3 2.1.1 Overview ..................................................................................................................................................................................... 3 2.1.2 Approved Proposal – Stage 4............................................................................................................................................. 3 Current Status of the Approved Proposal ..................................................................................................................... 5 Description of the Proposed Changes ............................................................................................................................ 6 Options Considered................................................................................................................................................................ 9 Revised Proposal Justification ........................................................................................................................................ 11 Local and Regional Context ............................................................................................................................................. 12 2.6.1 Overview and Socio-Economic Environment ............................................................................................................ 12 2.6.2 Tenure and Land Use.......................................................................................................................................................... 12 2.6.3 Climate ..................................................................................................................................................................................... 15 2.6.4 Bioregional Context ............................................................................................................................................................ 17 2.6.5 Landforms and Land Systems......................................................................................................................................... 17 2.6.6 Hydrology ............................................................................................................................................................................... 20 3. Stakeholder Consultation ................................................................................................................................. 21 Stakeholder Identification ................................................................................................................................................ 21 Stakeholder Engagement ................................................................................................................................................. 22 4. Environmental Principles and Factors ........................................................................................................... 27 Environmental Principles .................................................................................................................................................. 27 Identification of Environmental Factors ..................................................................................................................... 28 5. Key Environmental Factors ............................................................................................................................... 32 Flora and Vegetation .......................................................................................................................................................... 32 5.1.1 EPA Objective ........................................................................................................................................................................ 32 5.1.2 Policy and Guidance ........................................................................................................................................................... 32 5.1.3 Receiving Environment ...................................................................................................................................................... 32 5.1.4 Potential Impacts ................................................................................................................................................................. 40 5.1.5 Mitigation ................................................................................................................................................................................ 41 5.1.6 Assessment of Impacts ...................................................................................................................................................... 42 5.1.7 Predicted Outcome ............................................................................................................................................................. 43 Terrestrial Fauna .................................................................................................................................................................. 44 5.2.1 EPA Objective ........................................................................................................................................................................ 44 5.2.2 Policy and Guidance ........................................................................................................................................................... 44 5.2.3 Receiving Environment ...................................................................................................................................................... 44 ii s38 Referral Supporting Information 5.2.4 Potential Impacts ................................................................................................................................................................. 51 5.2.5 Mitigation ................................................................................................................................................................................ 51 5.2.6 Assessment of Impacts ...................................................................................................................................................... 52 5.2.7 Predicted Outcome ............................................................................................................................................................. 52 Inland Waters ......................................................................................................................................................................... 53 5.3.1 EPA Objective .......................................................................................................................................................................