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FLORA AND FAUNA IMPACT ASSSESSMENT FOR COOKS COVE Detailed Design Stage Development Application For: ROCKDALE COUNCIL July 2010 Final Report Cumberland Ecology PO Box 2474, Carlingford Court 2118 Report No. 5006RP13 The preparation of this report has been in accordance with the brief provided by the Client and has relied upon the data and results collected at or under the times and conditions specified in the report. All findings, conclusions or recommendations contained within the report are based only on the aforementioned circumstances. The report has been prepared for use by the Client and no responsibility for its use by other parties is accepted by Cumberland Ecology. Approved by: David Robertson Position: Project Director Signed: Date: 28 June, 2010 FINAL REPORT i 28 JUNE 2010 Table Of Contents EXECUTIVE SUMMARY 1. INTRODUCTION 1.1 Purpose 1.1 1.2 Terminology 1.1 1.3 Background 1.2 1.4 Site Description 1.2 1.5 Proposal 1.3 1.6 Approval of the Stage 1 DA 1.3 1.7 Development Consent and Plans of Management 1.4 2. METHODS 2.1 Literature Review 2.1 2.2 Flora Surveys 2.2 2.2.1 Vegetation mapping 2.2 2.2.2 Pre-Clearance Vegetation Surveys 2.2 2.3 Fauna Surveys 2.3 2.3.1 Birds 2.3 2.3.2 Bats 2.4 2.3.3 Other Mammals 2.4 2.3.4 Amphibians 2.5 2.3.5 Fish 2.7 3. RESULTS 3.1 Literature Review 3.1 3.2 Vegetation Surveys and Mapping 3.1 3.2.2 Closed to Open Saltmarsh 3.1 FINAL REPORT i 28 JUNE 2010 Table Of Contents 3.2.3 Closed to Open Reedland 3.4 3.2.4 Mangroves 3.5 3.2.5 Disturbed/ Artificial Woodland 3.5 3.2.6 Exotic Grassland 3.7 3.2.7 Conservation Significance 3.7 3.2.8 Threatened Flora 3.8 3.3 Fauna 3.8 3.3.1 Fauna Recorded on the Subject Site 3.8 3.3.2 Potential Fauna Habitat 3.10 3.3.3 Threatened and Significant Species 3.12 4. IMPACT ASSESSMENT 4.1 Impacts on Endangered Ecological Communities 4.1 4.1.1 Saltmarsh and reedland communities 4.1 4.2 Impacts on Other Vegetation 4.3 4.2.1 Mangroves 4.3 4.2.2 Artificial Woodland 4.4 4.3 Impacts on Threatened Fauna 4.4 4.3.1 Migratory Waders 4.4 4.3.2 Green and Golden Bell Frog 4.6 4.3.3 Woodland and Golf Course Habitat 4.7 4.4 Other Impacts 4.8 4.4.1 Spring Street Wetland 4.8 4.4.2 Nutrients and Run-off 4.8 4.4.3 Cooks River and Muddy Creek 4.9 FINAL REPORT ii 28 JUNE 2010 Table Of Contents 5. MITIGATION MEASURES 5.1 Mitigation Measures 5.1 5.1.1 Endangered Ecological Communities 5.1 5.1.2 Spring Street Wetland 5.3 5.1.3 Long-term Monitoring and Management of the Wetlands 5.3 5.1.4 Cooks River and New Riparian Zone 5.4 5.1.5 Muddy Creek 5.4 5.1.6 Other Vegetation 5.4 5.1.7 Threatened Fauna 5.7 5.1.8 Minimising Impacts on Local Community Groups 5.8 5.2 Variations in areas of compensatory habitat from the previous Flora 5.8 and Fauna Impact Assessment 5.3 Assessments of Significance 5.9 6. CONCLUSION List of Figures 1.1 THE SUBJECT SITE 1.5 3.1 VEGETATION ON THE SUBJECT SITE 3.3 4.1 WETLAND VEGETATION TO BE IMPACTED BY THE DEVELOPMENT 4.2 5.1 NEW WETLAND AREAS ON THE SITE 5.6 5.2 NO CONSTRUCTION ZONE AROUND LANDING LIGHTS WETLAND 5.10 FINAL REPORT iii 28 JUNE 2010 List of Photographs 3.1 SALTMARSH AT LANDING LIGHTS WETLAND 3.4 3.2 PLANTED NATIVE VEGETATION COMMUNITY AT SPRING STREET WETLAND 3.7 Table Of Appendices A. THREATENED FLORA AND FAUNA AND LIKELIHOOD OF OCCURRENCE ON THE SUBJECT SITE B. FAUNA LISTS C. FLORA IDENTIFIED ON THE SUBJECT SITE D. ASSESSMENTS OF SIGNIFICANCE E. ASSUMED CONCURRENCE CONDITIONS OF CONSENT List of Tables 5.1 CHANGES MADE TO COMPENSATORY HABITAT AREAS 5.9 A.1 THREATENED PLANTS AND THEIR LIKELIHOOD OF OCCURRENCE ON THE SUBJECT SITE A.2 A.2 THREATENED FAUNA IN ROCKDALE LGA AND LIKELIHOOD OF OCCURRENCE ON SUBJECT SITE A.4 B.1 FAUNA SPECIES RECORDED DURING VARIOUS STUDIES AND RECORDS FROM THE DEC ATLAS OF NSW WILDLIFE IN THE LOCALITY B.2 C.1 FLORA IDENTIFIED ON THE SUBJECT SITE 6.1 FINAL REPORT iv 28 JUNE 2010 Executive Summary INTRODUCTION The Cooks Cove site is located in the suburb of Arncliffe in the Local Government Area of Rockdale City Council. The proposed development is to take place within land that has been rezoned as part of an approved Sydney Regional Environmental Plan 33 (SREP 33). The developer is proposing to relocate parts of Kogarah golf course immediately south of its current location and to reconfigure the site. The site for the proposed golf course consists of a number of man-made/heavily altered wetland areas. The wetland towards the southern end of the site known as ‘Landing Lights’ wetland forms a saltmarsh complex, which is categorised under the TSC Act as an Endangered Ecological Community. This wetland provides important habitat for migratory waders, including, on occasion, species such as the Sanderling, Latham’s Snipe and the Terek Sandpiper. To the west of the Landing Lights wetland a complex of freshwater reeds occurs. This community is a variation of Sydney Freshwater Wetlands on Coastal Floodplains, which is also an endangered ecological community (EEC). Spring Street wetland is a mangrove wetland that has become heavily degraded, suffering from leachate infiltration and rubbish dumping, as well as sedimentation which has led to the northern end of the wetland becoming anaerobic. This wetland is not considered to provide habitat for any threatened species. To the east of these wetlands isolated complexes of reedland/exotic species occur, which remain largely dry throughout the year, becoming wetter after periods of heavy or prolonged rain. These areas are dominated by Phragmites in the damper central areas and by exotics elsewhere. Whilst they are considered to be a variation of the Sydney Freshwater Wetlands on Coastal Floodplains EEC, because of the high influence of exotic species these areas are not considered to be of high ecological value. Due to their predominant dryness, they do not provide primary habitat for wetland-dependent fauna species. The Green and Golden Bell Frog (Litoria aurea), which is listed as Endangered under the Threatened Species Conservation Act (TSC Act, 1994) and Vulnerable under the Environment Protection and Biological Conservation Act ( EPBC Act, 1999), is known to utilise parts of the current golf course. FINAL REPORT S.1 28 JUNE 2010 PURPOSE The purpose of this report is to provide an update to the original Flora and Fauna Impact Assessment that was prepared for the Stage 1 Development Application for the Cooks Cove site. The Stage 1 Development Application (DA) and associated management plans (including the Wetlands Environmental Management Plan and a Plan of Management for the Green and Golden Bell Frog) were approved in December 2006 with conditions of consent attached. METHODS A comprehensive literature review and database search for threatened species that have been recorded within the study area was conducted (in 2005 and updated in 2010) as well as a series of comprehensive field surveys for threatened flora and fauna species. Surveys were conducted by Cumberland Ecology in 2005, with additional survey work being carried out in wetland areas in 2007. Surveys included targeted searches for threatened flora and fauna and vegetation mapping. Additional amphibian surveys were also conducted in 2009. Numerous previous surveys have also been conducted on the site and the information from these was also utilised to assess potential fauna habitat and use of the site by fauna over a number of years. RESULTS Vegetation Surveys and Mapping Five plant communities were recorded on the subject site: Closed to Open Saltmarsh; Closed to Open Reedland; Mangroves; Disturbed/artificial woodland; and Exotic Grassland. These are described in the main body of the report. Conservation Significance The saltmarsh community identified at a part of the site called “Landing Lights wetlands” conforms to the Final Determination for the endangered ecological community (EEC) FINAL REPORT S.2 28 JUNE 2010 “Coastal saltmarsh in the NSW North Coast Sydney Basin & South East Corner Bioregions” (NSW Scientific Committee 2004a). The reedland to the west of the Landing Lights forms a variation of the EEC “Freshwater Wetlands on Coastal Floodplains in the NSW North Coast Sydney Basin & South East Corner Bioregions” EEC (NSW Scientific Committee 2004b). Patches of reedland to the north-east of Landing Lights would also conform to this EEC, although it is noted that a high proportion of exotic species occur in these areas and that they are in poor condition No threatened plant species listed under the Threatened Species Conservation Act 1995 or Environmental Protection & Biodiversity Protection Act 1999 were recorded on the subject site. Nor was any habitat on the subject site deemed suitable to support threatened flora species. Threatened and Significant Fauna Threatened species that exist on the site or have the potential to use the site include: The Green and Golden Bell Frog (found on the Kogarah Golf Course); The Eastern Bent-wing Bat (may have been detected during bat surveys, however, there is minimal suitable habitat in the area for this species and it is more likely to have been a more common species such as the Southern Forest Bat); Grey-headed Flying-fox (not detected, but it is possible that it forages occasionally on the subject site); Glossy Black-cockatoo, Swift Parrot, Superb Fruit-dove and Regent Honeyeater (recorded in the locality although have not been detected on the subject site.