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Darwinia Masonii) IUCN Criteria Assessment Iron Hill Deposits Proposal

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Darwinia Masonii) IUCN Criteria Assessment Iron Hill Deposits Proposal Mason’s Darwinia (Darwinia masonii) IUCN Criteria Assessment Iron Hill Deposits Proposal Prepared for Mount Gibson Mining 1 March 2016 Mason’s Darwinia ( Darwinia masonii ) I U C N C r i t e r i a A s s e s s m e nt DOCUMENT TRACKING Item Detail Project Name Iron Hill Deposits Public Environmental Review Project Number 15PER-2188 Rebecca McCracken Project Manager (08) 9227 1070 Suite 1 & 2, 49 Ord Street, West Perth Prepared by Eco Logical Australia Reviewed by Mark Vile Approved by Mark Vile Status FINAL Version Number 3 Last saved on 1 March 2016 Cover photo Vegetation on the Mount Gibson Ranges, Darwinia masonii © Eco Logical Australia 2015 This report should be cited as ‘Eco Logical Australia 2016. Mason’s Darwinia (Darwinia masonii) IUCN Assessment. Prepared for Mount Gibson Mining Ltd.’ ACKNOWLEDGEMENTS This document has been prepared by Eco Logical Australia Pty Ltd with support from Mount Gibson Mining Ltd. Disclaimer This document may only be used for the purpose for which it was commissioned and in accordance with the contract between Eco Logical Australia Pty Ltd and Mount Gibson Mining Ltd. The scope of services was defined in consultation with Mount Gibson Mining Ltd, by time and budgetary constraints imposed by the client, and the availability of reports and other data on the subject area. Changes to available information, legislation and schedules are made on an ongoing basis and readers should obtain up to date information. Eco Logical Australia Pty Ltd accepts no liability or responsibility whatsoever for or in respect of any use of or reliance upon this report and its supporting material by any third party. Information provided is not intended to be a substitute for site specific assessment or legal advice in relation to any matter. Unauthorised use of this report in any form is prohibited. Template 29/9/2015 © ECO LOGICAL AUSTRALIA PTY LTD ii Mason’s Darwinia ( Darwinia masonii ) I U C N C r i t e r i a A s s e s s m e nt Contents 1 Introduction ................................................................................................................................. 1 2 IUCN Red List Categories and Criteria ..................................................................................... 2 2.1 Utilisation of the IUCN criteria for Australian threatened species ................................................ 2 3 Overview of D. masonii .............................................................................................................. 4 3.1 Description of taxon ...................................................................................................................... 4 3.2 Distribution and habitat ................................................................................................................. 4 3.3 Population size ............................................................................................................................. 4 3.4 Current conservation status .......................................................................................................... 5 4 Globe Environmental (2015) Assessment ................................................................................ 6 5 Discussion................................................................................................................................... 7 5.1 Direct impacts of the Proposal...................................................................................................... 7 5.2 Indirect impacts of the Proposal ................................................................................................... 7 5.3 IUCN threatened category ............................................................................................................ 8 5.4 Continuing decline under criterion B ............................................................................................ 9 5.5 Mitigation measures ................................................................................................................... 10 5.6 Future population viability ........................................................................................................... 12 5.6.1 Genetic diversity ......................................................................................................................... 12 5.6.2 Habitat connectivity and dispersal .............................................................................................. 12 5.6.3 Existing population and habitat maintenance ............................................................................. 12 5.6.4 Other threatening processes ...................................................................................................... 13 6 Summary and Conclusions ..................................................................................................... 14 References ............................................................................................................................................. 15 Appendix A Parks and Wildlife Submission ....................................................................................... 17 Appendix B IUCN Criteria (IUCN 2014) ................................................................................................ 20 Appendix C Potential Future Exploration and Mining Activities at Gibson Hill – Steps to Approval ................................................................................................................................................. 21 Appendix D Globe Environments (2015) IUCN Assessment ............................................................ 22 Appendix E Potential indirect effects on rare plants from mine development and mining operations (MGM 2015a) ....................................................................................................................... 42 © ECO LOGICAL AUSTRALIA PTY LTD iii Mason’s Darwinia ( Darwinia masonii ) I U C N C r i t e r i a A s s e s s m e nt List of Plates Plate 1 & 2: D. masonii. Photo credit: Eco Logical Australia 2014, 2015. ................................................. 4 Abbreviations Abbreviation Description AHD Australian Height Datum AOO Area of occupancy DEC Department of Environment and Conservation DoE Department of the Environment Declared Rare Flora (Threatened) listed under the latest WA Wildlife Conservation (Rare DRF Flora) Notice EHPL Extension Hill Pty Ltd EIA Environmental Impact Assessment ELA Eco Logical Australia EOO Extent of occurrence EPA Environmental Protection Authority EPBC Act Environment Protection and Biodiversity Conservation Act 1999 (Commonwealth) EPBC Environment Protection and Biodiversity Conservation Regulations 2000 (Commonwealth) Regulations IUCN International Union for Conservation of Nature MGM Mount Gibson Mining Limited OEPA Office of Environmental Protection Authority Parks and Department of Parks and Wildlife Wildlife PER Public Environmental Review TSSC Threatened Species Scientific Committee (Commonwealth) WA Western Australia WATSSC Western Australian Threatened Species Scientific Committee WC Act Wildlife Conservation Act 1950 (State) © ECO LOGICAL AUSTRALIA PTY LTD iv Mason’s Darwinia ( Darwinia masonii ) I U C N C r i t e r i a A s s e s s m e nt 1 Introduction Mount Gibson Mining Limited (MGM) proposes to extend its existing mining operations at the Mt Gibson Ranges to include development of the Iron Hill Deposits, located immediately south of the approved mine operations at Extension Hill. The Iron Hill Deposits Proposal (‘the Proposal’) is for a 112 ha extension to the existing approved mining operations, comprising of two mine pits (20 ha), a waste rock landform and associated support infrastructure). The Proposal was referred to the Environmental Protection Authority (EPA) for assessment under s38(1) of the Environmental Protection Act 1986 (Western Australia; WA) in August 2014, with EPA determining the Proposal to be subject to an Environmental Impact Assessment (EIA) at the level of Public Environmental Review (PER) with a 6 week public review period. The review period for the PER document (hereafter ‘PER’; MGM 2015a) closed on 18 January 2016. On 21 January 2016, the Office of Environmental Protection Authority (OPEA) provided MGM with submissions made in relation to the Proposal. A submission from the Department of Parks and Wildlife (Parks and Wildlife) related to the assessment of the status of the flora species Darwinia masonii (Mason’s Darwinia) according to the International Union for Conservation of Nature (IUCN) criteria (IUCN 2012). Due to its restricted population, D. masonii was listed as ‘Declared Rare Flora’ (DRF) under the WA Wildlife Conservation Act 1950 (WC Act) in 1980 and as a Threatened Species (Vulnerable) under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act) in 2000. It was determined during the EIA process that the Proposal would have a direct impact on D. masonii, via the removal of up to 1,327 individual plants (5.9% of the known original population), within the Proposal’s development envelope (‘the development envelope’) upon full development of the Proposal (MGM 2015a). An assessment of the effect of the Proposal to D. masonii using the internationally accepted conservation criteria of the IUCN (IUCN 2012) was undertaken, with Globe Environments (2015) initially preparing a report assessing the potential for any change to the IUCN threatened taxa category for D. masonii as a result of the development of the
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