Biodiversity Assessment: Cape Otway Road, Australia
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Final Report Biodiversity Assessment: Cape Otway Road, Australia Prepared for COESR Pty Ltd January 2018 Ecology and Heritage Partners Pty Ltd MELBOURNE: 292 Mt Alexander Road, Ascot Vale VIC 3032 GEELONG: 230 Latrobe Terrace, Geelong West Vic 3218 BRISBANE: Level 22, 127 Creek Street, Brisbane QLD 4000 ADELAIDE: 22 Greenhill Road, Wayville SA 5034 CANBERRA: PO Box 6067, O’Connor ACT 2602 SYDNEY: Level 5, 616 Harris Street, Ultimo, NSW, 2007 www.ehpartners.com.au | (03) 9377 0100 DOCUMENT CONTROL Assessment Biodiversity Assessment Address Cape Otway Road, Australia Project number 7689 Project Manager Shannon LeBel (Senior Botanist) Report Reviewer Andrew Hill (Director/Principal Ecologist) Other EHP staff Andrew Taylor (Consultant Zoologist) Mapping Monique Elsley (GIS Coordinator) File name 7689_EHP_BA_CORA_Finalv3_31012018 Client COESR Pty Ltd Bioregion Victorian Volcanic Plain and Otway Plain CMA Corangamite Council Surf Coast Shire Report versions Comments Comments updated by Date submitted Draft v1 - 22/09/2017 Incorporation of results from additional field Final investigations; Addressed comments provided by AT/SLB 27/11/2017 Tract and Surf Coast Shire Council. Updated Masterplan; Addressed preliminary Finalv2 SLB 28/01/2018 comments provided by DELWP Minor amendment to FFG Act text and Finalv2 SLB 31/01/2018 Minimisation Statement. Acknowledgements We thank the following people for their contribution to the project: Simon Loader (Tract Consultants) for project information; Daryl Pelchen (Daryl Pelchen Architects) for providing project and site information; The landowners who provided access to the study area; The Victorian Department of Environment, Land, Water and Planning for access to ecological databases. Copyright © Ecology and Heritage Partners Pty Ltd This document is subject to copyright and may only be used for the purposes for which it was commissioned. The use or copying of this document in whole or part without the permission of Ecology and Heritage Partners Pty Ltd is an infringement of copyright. Disclaimer Although Ecology and Heritage Partners Pty Ltd have taken all the necessary steps to ensure that an accurate document has been prepared, the company accepts no liability for any damages or loss incurred as a result of reliance placed upon the report and its contents. 2 Biodiversity Assessment, Cape Otway Road Australia (CORA) SUMMARY Introduction Ecology and Heritage Partners Pty Ltd was commissioned by COESR Pty Ltd to conduct a Biodiversity Assessment at Cape Otway Road, Australia, located at Cape Otway Road & Connies Lane, Modewarre. This assessment was undertaken to identify and characterise the vegetation on-site, determine the presence (or likelihood thereof) of any significant flora and fauna species and/or ecological communities and address any implications under Commonwealth and State environmental legislation. Methods A series of ecological field assessments were undertaken on 9 February 2017, and 9 and 10 November 2017 to obtain information on flora and fauna values within the study area. A habitat hectare assessment was undertaken in conjunction with the flora survey. Vegetation within the study area was assessed according to the habitat hectare methodology, which is described in the Vegetation Quality Assessment Manual. A targeted Growling Grass Frog Litoria raniformis survey was completed on two separate occasions on 14 and 16 November 2017 within areas identified as potential habitat in the form of artificial waterbodies and waterways. Results Flora Remnant native vegetation in the study area is representative of five Ecological Vegetation Classes (EVCs): Cane Grass Wetland (EVC 291), Plains Grassy Wetland (EVC 125), Tall Marsh (EVC 821), Grassy Woodland (EVC 175) and Aquatic Herbland (EVC 653). Of the 25.183 hectares of native vegetation proposed for to be impacted as part of the CORA development, 15.902 hectares is ‘Current Wetland’, and a total of 9.281 is native vegetation as mapped during the field assessments. It should be noted that the vegetation within the 15.902 hectares covered by the Current Wetland layer did not meet the thresholds that define a patch of native vegetation despite the field assessments being undertaken during a suitable seasonal timeframe to assess the presence of seasonally dominant wetland vegetation communities. A total of 107 flora species (55 indigenous and 52 non-indigenous or introduced) were recorded within the study area during the field assessment. Based on habitat present within the study area, landscape context and the proximity of previous records, nationally significant flora species are considered unlikely to occur within the study area. Two State significant flora (Salt Lawrencia, Brackish Plains Buttercup) were recorded in the study area, within Salt Lawrencia was recorded in the north-east of the study in low abundance, while Brackish Plains Buttercup was commonly observed throughout the ground layer of much of the land affected by the current wetland layer in Cane Grass Wetland and Plains Grassy Wetland areas. 3 Biodiversity Assessment, Cape Otway Road Australia (CORA) Fau na Forty (40) fauna species were recorded within the study area during the field assessment, including: two introduced mammals and 36 birds (31 native, five introduced) and two native frogs. No significant fauna species were recorded during the field assessment; however there is potential habitat within the study area for fauna species of national (Growling Grass Frog, although targeted surveys did not record this species), State (predominantly birds) and regional conservation significance. Com m u nities Five nationally listed ecological communities are predicted to occur within the local area. However, no habitat zones within the study area met the condition thresholds that define these communities due to a lack of indicator species, and a high cover of exotic flora species. Further, based on the observed flora during the site assessment, including the dominance of Southern Cane- grass throughout all Cane Grass Wetland habitat zones, and the high cover and dominance of halophytic taxa (Round-leaf Wilsonia, Creeping Brookweed, and Swamp Weed) through the ground-layer throughout all patches of PGWe1, PGwe2, and PGWe3, the nationally significant community Seasonal Herbaceous Wetlands (Freshwater) of the Temperate Lowland Plains is not considered to occur within the study area. Perm itted Clearing As s es s m ent (the Gu idelines ) The study area is within Location A, with 25.393 hectares of native vegetation (comprised of 25.183 hectares of native vegetation, including ‘current wetlands’, and three scattered trees) proposed to be impacted. As such, the permit application falls under the Moderate Risk-based pathway. The offset requirement for native vegetation removal is 0.066 General Biodiversity Equivalence Units (BEU), along with Specific units for Glossy Grass Skink (19.714 specific BEUs), Dwarf Galaxias (16.499 specific BEUs), Yarra Pygmy Perch (17.265 specific BEUs), Purple Blown-grass (1.257 specific BEUs), Brackish Plains Buttercup (4.704 specific BEUs) and Pale Swamp Everlasting (12.802 specific BEUs). The majority of offset obligations can be met on-site through the creation of an offset site. Ecology and Heritage Partners are currently discussing a strategy with COESR to secure the remaining offset obligations generated by the CORA Development Legislative and Policy Implications Environm ent Protection and Biodivers ity Cons ervation Act 1 9 99 (EPBCAct -Com m onw ealth) No Growling Grass Frog were recorded during the targeted surveys for the species, and there is considered to be a low likelihood of occurrence within the study area for this species on a permanent or semi- permanent basis. Due to the dominance of Southern Cane-grass, and a suite of halophytic herbs, the nationally significant ecological community Seasonal Herbaceous Wetlands (Freshwater) of the Temperate Lowland Plains is not present in the study area. Potential Golden Sun Moth habitat is located within a wetland system that is regularly (within every two years) inundated with water, and there is a low likelihood that the species would successfully utilise this habitat for breeding purposes as any developing pupa underground would not survive regular flooding. There is a low likelihood that Red Knot and Curlew Sandpiper would rely on habitat proposed to be disturbed within the study area as limiting or breeding. As 4 Biodiversity Assessment, Cape Otway Road Australia (CORA) such, it is considered that the CORA Development will not have a significant impact to any matter of National Environmental Significance. Regardless COESR will submit a referral to the Commonwealth for assessment under the EPBC Act to mitigate any potential legislative risk to the project. Flora and Fau na Gu arantee Act 1 988 (FFG Act -Victoria) There is suitable habitat within the study area for several species listed or protected under the FFG Act. An FFG Act permit will likely be required where impacts to FFG Act protected flora (Acacia spp.) occur within the road reserve of Connies Lane. However the majority of the study area is privately owned, as such a permit under the FFG Act is not required in these areas. Environm ent Effects Act 1 978 (Victoria) Based on the current development plan, and the quality and extent of native vegetation as recorded during the February and November 2017 field assessments, the vegetation proposed to be removed is below the threshold that automatically triggers the requirement for