Biodiversity Assessment
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Risks to Biodiversity Report For Tellus Holdings Chandler Project Prepared by: Low Ecological Services P/L October 201 Low Ecological Services P/L PO Box 3130, Alice Springs, NT 0871 Ph: (08) 89 555 222 Fax: (08) 89 555 722 Email: [email protected] Web: www.lowecol.com.au Tellus Holdings– The Proposal: Risks to Biodiversity Report for EIS EXECUTIVE SUMMARY Tellus Holdings Ltd proposes to construct and operate an underground rock salt mine and storage facility (the Chandler Facility), a rail siding with storage and transfer facilities (the Apirnta Facility) and haul and access roads. If approved, the Chandler Facility would be located on a current pastoral lease, Maryvale Station, approximately 120 km south of Alice Springs. The Apirnta Facility would be located approximately 30 km to the west of the Chandler Facility, also on a pastoral lease, Henbury Station. The haul road would span the western half of Maryvale Station and the access road would span the eastern half of Henbury Station along the southern boundary. Collectively, the two proposed facilities and the haul and access roads are referred to as “the Proposal”. The following Risks to Biodiversity Report has been prepared to address the Chandler Salt Mine Terms of Reference for the Preparation of an Environmental Impact Statement (EIS) (ToR) (September 2016), with regards to Biodiversity. The purpose of this report is to; Describe the existing environment in the Proposal area, determine the presence or likelihood of threatened flora species and ecological communities, threatened fauna species and migratory species in the Proposal area and identify any threatened fauna habitat within in the Proposal area; Conduct a risk assessment of the potential risks to threatened species and biodiversity as a whole as a result of construction and operational stages of the Proposal; and Provide mitigation techniques to avoid or mitigate potential risks to threatened species and biodiversity as a whole in accordance with best practice guidelines. Methods The assessment combines data from desktop surveys and field surveys over four years. Desktop surveys included searches of Commonwealth and Northern Territory Government databases, spatial data and aerial imagery and a review of relevant literature. Six intensive field surveys were undertaken by Low Ecological Services (LES) of the mine lease area, the proposed rail siding and storage and transfer facility and proposed access roads and haul road, between October 2012 and May 2016. Direct observation, secondary sign, bird, landscape and vegetation surveys were carried out at 69 sites in total, with trapping undertaken at 32 of these sites. Methods for vegetation surveys and landscape description are consistent with the Northern Territory Guidelines and Field Methodology for Vegetation Survey and Mapping (Brocklehurst, et al., 2007) and A resource assessment towards a conservation strategy for the Finke Bioregion (Neave, et al., 2004). Survey methodology for fauna is consistent with the Standard terrestrial vertebrate survey methods used by the DLRM (in Northern Territory Environmental Protection Agency, 2013) and A resource assessment towards a conservation strategy for the Finke Bioregion (Neave, et al., 2004). Survey methods used to determine the presence of threatened species followed those suggested in the Survey Guidelines for Australia’s Threatened Mammals (Department of Sustainability, Environment, Water, Population and Communities, 2011a), Survey Guidelines for Australia’s Threatened Reptiles (Department of Sustainability, Environment, Water, Population and Communities, 2011b) and Survey Guidelines for Australia’s Threatened Birds (Department of Environment, Water, Heritage and the Arts, 2010). Targeted searches were conducted for threatened species identified by the Protected Matters Search tool as potentially occurring within the area of interest, including: Low Ecological Services P/L January 2017 ii Tellus Holdings– The Proposal: Risks to Biodiversity Report for EIS Great desert skink (Liopholis kintorei) ; Brush-tailed mulgara (Dasycercus blythi); Slater’s skink (Liopholis slateri slateri) ; Thick-billed grasswren (Amytornis modestus); Desert sandskipper (Croitana aestiva) ; Black-footed rock-wallaby (Petrogale lateralis, Australian painted snipe (Rostratula australis); MacDonnell Ranges race); Night parrot (Pezoporus occidentalis) ; Central rock-rat (Zyzomys pendunculatus) ; Princess parrot (Polytelis alexandrae) ; Greater bilby (Macrotis lagotis) ; and Crest-tailed mulgara (Dasycercus cristicauda; Southern marsupial mole (Notoryctes typhlops). Existing environment The Proposal is located in the Finke Bioregion and the climate of the Proposal area is characterised by distinct hot summers and cold winters with a wide range in diurnal temperature. Vegetation in the Proposal area has been mapped at a scale of 1: 1, 000 000 in the Vegetation Survey of the Northern Territory (Wilson, et al., 1990) and there are six vegetation communities across the site that are typical of central Australia. The dominant vegetation community across the Proposal area is vegetation type 83 (Triodia low hummock grassland), along with vegetation type 108 and 110 (Maireana low open chenopod shrubland and Atriplex low open shrubland) and smaller areas of vegetation type 66 (Acacia tall open shrubland). Threatened flora No threatened flora species were recorded within the Proposal area. One flora species listed as near threatened (Nt) and two species listed as data deficient (DD), under the Territory Parks and Wildlife Conservation Act (TPWC Act) were recorded during the surveys. An additional five Nt or DD species have a moderate to high likelihood of occurring in the Proposal area (Table 1). The data deficient species are not considered to be significant in the Proposal area due to either limited habitat availability or widespread occurrence of the species in widely available habitat in the region. There are no threatened ecological communities or sensitive vegetation communities, such as groundwater dependent ecosystems, within the Proposal area. Table 1: Near threatened or data deficient flora species listed under the TPWC Act recorded during on-ground surveys, or with a high to moderate likelihood of occurring within the proposal area. Nt: near threatened, DD: data deficient. TPW Recorded Scientific Name Common name C EPBC during surveys Likelihood of occurrence Ixiochlamys nana Small fuzzweed DD - No Moderate Brachyscome ciliaris Variable daisy DD - No High Maireana carnosa Cottony Nt - Yes High bluebush Sclerolaena longicuspis - Nt - No Moderate Crotalaria eremaea Bluebush pea DD - Yes High Acacia oswaldii - DD - No High Calandrinia remota - DD - Yes High Synapthantha - DD - No Moderate tillaeacea Low Ecological Services P/L January 2017 iii Tellus Holdings– The Proposal: Risks to Biodiversity Report for EIS Threatened fauna Two threatened fauna species were recorded in the Proposal area during the on ground surveys: Notorcytes typhlops (southern marsupial mole), listed as vulnerable under the TPWC Act, was recorded on the eastern and western banks of the Finke River approximately 800 m north of the Henbury Access Road; and Dasycercus sp. (mulgara) - Dasycercus cristicauda (crest-tailed mulgara), listed as vulnerable under the both the Environment Protection and Biodiversity Conservation Act (EPBC Act) and TPWC Act)/ Dasycercus blythi (brush-tailed mulgara), listed as vulnerable under the TPWC Act. Mulgara tracks were recorded outside the mine lease, approximately 0.5 km north of the proposed Chandler Haul Road route, although it was not possible to identify these to the species level, there is suitable habitat for both D. blythi and D. cristicauda in the Proposal area. Five threatened fauna species were not recorded during the on-ground surveys but have a low – moderate likelihood of occurring within the Proposal area (Table 1). Six fauna species listed as Nt or DD under the TPWC Act were recorded during on-ground surveys and an additional seven species have a moderate or high likelihood of occurring within the Proposal area. These species are not considered to have conservation significance in the Proposal area (Table 2). Three species listed as migratory and marine under the EPBC Act were recorded in the Proposal area during surveys and an additional five species have a moderate to high likelihood of occurring (Table 3). Table 1: Threatened fauna species recorded during on-ground surveys, or with a high to moderate likelihood of occurrence within the Proposal area. Vu: vulnerable, En: endangered, Cr: critically endangered, ER: extinct regionally *likelihood of occurring after high rainfall, #Tracks of Dasycercus sp. recorded. Status Recorded during Likelihood of Group Species name Common name TPWC EPBC suveys occurrence Bird Amytornis modestus Thick-billed grasswren Cr Vu No Low -moderate indulkana (north western subspecies) Polytelis alexandrae Princess parrot Vu Vu No Low- moderate* Rostratula australis Australian painted snipe Vu En No Low- moderate* Mammal Dasycercus blythi Brush-tailed mulgara Vu - Yes# High Dasycercus cristicauda Crest-tailed mulgara Vu Vu Yes# High Notoryctes typhlops Southern marsupial mole Vu - Yes High Reptile Liopholis kintorei Great desert skink Vu Vu No Low- moderate Liopholis slateri slateri Slater's skink Vu En No Low-moderate Low Ecological Services P/L January 2017 iv Tellus Holdings– The Proposal: Risks to Biodiversity Report for EIS Table 2: Near threatened or data deficient