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16 December 2015 - Final Sandy Baldwin ACT Head of Projects APP Corporation Pty Limited Unit 8, 32 Lonsdale Street Braddon ACT 2612 Ecological Values and Constraints Assessment – Bangladesh Embassy Site, ACT Project no. 20955 and 21411 Dear Ms Baldwin, This letter presents an ecological values and constraints assessment (EVCA)for the site of the proposed Bangladesh Embassy, Block 18 Section 86, Yarralumla (refer Figure 1. Location of the study area, and Figure 2. Study area boundary). It has been updated to include the methodology and results of a survey for the Golden Sun Moth (Synemon plana), for which potential habitat was detected during the initial site visit for the EVCA. This EVCA is required to provide information to the National Capital Authority (NCA) regarding the significant ecological values of the 4965m² site, to obtain works approval for the project. It includes a description of the vegetation and ecological values of the study area as recorded through a field survey, and the likely potential impact of a development within the study area upon ecological values, specifically upon species and ecological communities listed pursuant to the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). Ecological values listed solely under the ACT Nature Conservation Act 2014 (NC Act) have also been considered, although it is understood that these values are not prohibitive for works on NCA land. This letter is based upon the following. A desktop review of the study area, including a search of the Commonwealth EPBC Act Protected Matters Search Tool, and examination of ecological values on ACTmapi. A total of 2.5 hours on site on 27 October 2015 to assess and map the vegetation within and identify the presence of, or habitat for, terrestrial flora and fauna species and ecological communities listed as threatened pursuant to the EPBC Act (i.e. Matters of National Environmental Significance) and the NC Act. During the field survey, the ecologist also examined the adjacent vacant land to the east and the road reserve, which are likely to be impacted by any development within the study area. A follow up Golden Sun Moth survey totalling approximately 2 hours on site, to confirm the presence of the species on the site (EPBC Act listed critically endangered and NC Act listed endangered). The experience of the author with regards to the ecology and distribution of local ecological values, particularly species and communities of conservation significance. Biosis Pty Ltd Canberra Resource Group Unit 3, 38 Essington Street Phone: 02 6102 1200 ACN 006 175 097 MITHCELL ACT 2911 Fax: 03 9646 9499 ABN 65 006 175 097 Email: [email protected] biosis.com.au Description of the study area Vegetation and Land Management The following was determined regarding the land use history and current condition of the study area. Much of the study area has been historically cleared of overstorey and midstorey vegetation in the past. Disturbance of the study area (i.e. through clearing, slashing etc.) has led to much of the ground cover within both the study area and the adjacent block (part Block 20 Section 86) being dominated by exotic species, including significant weed species such as Chilean Needle Grass (Nassella neesiana) which is present across much of the study area, the road reserve and the adjacent land. One large (15-25 m) planted Blue Gum (probably Eucalyptus globulus), a non-local native species, is present within the study area. Several Blue Gum saplings are regenerating near this tree. One mature Yellow Box (Eucalyptis melliodora) and Several Blakely's Red Gum (Eucalyptus blakelyi) are present and are likely to be remnant trees. Two Blakely's Red Gum stags (dead trees) are also present. Some Black Wattle (Acacia decurrens), a local native species, are also present as both trees and shrubby regrowth. Regeneration of overstorey local native species is occurring. No weed control has been undertaken within the study area. As well as significant groundstorey weed infestation, many exotic woody weeds are present, many of which are likely to have originated or dispersed from gardens and plantings in adjacent blocks. The road verge and parts of the study area appear likely to be regularly mown to keep biomass down. Further away from the road, biomass control has not been undertaken in a long time. Grazing by native vertebrates is unlikely to be occurring with any regularity due to the location of the study area. As a consequence of the above land management history, the site now consists of disturbed groundcover dominated by exotic pasture grasses and containing dense patches of herbaceous weeds. Dominant exotic pasture grasses include Chilean Needle Grass (Nassella neesiana) Cocksfoot (Dactylus glomerata) and Tall Fescue (Festuca arundinacea). Some small patches of native grasses remain, including Corkscrew (Austrostipa scabra), Tall Speagrass (Austrostipa bugeniculata), and Redleg Grass (Bothriochloa macra). Some native forbs are present including Bulbine Lily (Bulbine bulbosa), Yellow Buttons (Chrysocephalum apiculatum), and Scrambled Eggs (Goodenia pinnatifida). Although the study area supports a low diversity of native species, a large population of Bulbine Lily was recorded within the study area. The full list of species recorded within the study area is presented as Appendix A and photographs taken within the study area are presented as Appendix B. The presence of remnant Yellow Box and Blakely's Red Gum trees, both within the study area and in the adjacent property, indicates that the study area and locality would have supported the ecological community 'Yellow Box – Blakely's Red Gum Grassy Woodland' (known as Box-Gum Woodland). This is supported by the ACT government mapping of Box-Gum Woodland for the area (ACT Government 2004). © Biosis 2015 – Leaders in Ecology and Heritage Consulting 2 Weed Occurrence Several significant weeds are present within the study area. Those listed as Weeds of National Significance and/or listed on the Pest Plants and Animals (Pest Plants) Declaration 2015 under the ACT Pest Plants and Animals Act 2005 are detailed in Table 1. Numerous weeds of lower significance were also recorded within the study area, likely having colonised and proliferated as a result of past disturbance, or spreading from nearby gardens. Table 1. Weed occurrence within the study area Species WoNS?* ACT weed Location and severity of infestation category** African Lovegrass No 3 Scattered African Lovegrass occurs within the study area Eragrostis curvula and adjacent land. Control is required for this species. Chilean Needle Grass Yes 3 Occurs in high density within the study area. Dominant Nassella neesiana species in the road reserve and present in high density in the adjacent vacant land. Cootamundra Wattle No 4 Large shrubs present within the study area Acacia baileyana Cotoneaster species No 4 Shrubs present within the study area (possibly C. glaucophyllus) Japanese Honeysuckle No 4 Large infestation present along the southern edge of the Lonicera japonica study area. Narrow-leaf privet No 4 Privet shrubs likely present within the study area. Ligustrum sinense Rowan No 4 Several large 10-15 m, plus young regrowth. Sorbus aucuparia Scotch Thistle No 3 Several recorded near road reserve. Onopordum acanthium St John's Wort No 3 Low density within the study area. Hypericum perforatum *Weed of National Significance ** listed as 'must be contained' (Category 3) or 'prohibited' (Category 4) on the Pest Plants and Animals (Pest Plants) Declaration 2015 under the ACT Pest Plants and Animals Act 2005. Habitat Values The study area is highly modified, yet still provides habitat for native fauna. Habitat features which are likely to be of the value to native fauna within the study area include the native and exotic groundcover grasses and herbs, the mature eucalypts (nectar, nesting habitat etc.), and the shrubs and woody weeds (nesting and foraging habitat for small common birds). No nests or hollows were recorded during the field survey. © Biosis 2015 – Leaders in Ecology and Heritage Consulting 3 Two Blakely's Red Gum stags (dead trees) are present however neither of these appear to be hollow- bearing. Potential for Impacts on Significant Ecological Values Threatened Ecological Communities The following two threatened ecological communities (TECs), listed under both the EPBC Act and the NC Act, occur in the locality. Natural Temperate Grassland EPBC Act – listed as 'Natural Temperate Grassland of the Southern Tablelands of NSW and the Australian Capital Territory' and classified as endangered NC Act – listed as 'Natural Temperate Grassland' and classified as endangered EPBC Act Description – The Natural Temperate Grassland TEC is characterised by grassy vegetation dominated by moderately tall (25–50cm) to tall (50–100cm), dense to open tussock grasses in the genera Austrodanthonia, Austrostipa, Bothriochloa, Poa and Themeda. Up to 70% of all plant species may be forbs. The community may be treeless or contain up to 10% cover of trees, shrubs or sedges. Natural Temperate Grassland occurs within the geographical region of the Southern Tablelands of NSW and the ACT at altitudes between 560m in central and northern parts of its distribution and 1200m in the south, in valleys influenced by cold air drainage and in broad plains. Potential for occurrence in the study area – None –Given the location of the site in the landscape and the presence of characteristic Box-Gum Woodland species,