ORICA RICHMOND VALE BIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 FINAL August 2018 ORICA RICHMOND VALE BIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 FINAL Prepared by Umwelt (Australia) Pty Limited on behalf of Orica Mining Services Project Director: Shaun Corry Project Manager: Brooke Weber Report No. 3614/R04/Final Date: August 2018 Newcastle 75 York Street Teralba NSW 2284 Ph. 02 4950 5322 www.umwelt.com.au This report was prepared using Umwelt’s ISO 9001 certified Quality Management System. Table of Contents 1.0 Introduction 1 1.1 Background 1 2.0 Methods 4 2.1 Flora Methods 6 2.1.1 Floristic Surveys 6 2.1.2 Plant Identification and Taxonomic Review 7 2.1.3 Condition Assessment 7 2.1.4 Photo Monitoring 7 2.2 Fauna Methods 7 2.2.1 Diurnal Herpetofauna Survey 7 2.2.2 Diurnal Avifauna Survey 8 2.2.3 Call Playback 8 2.2.4 Nocturnal Survey 8 2.2.5 Micro-bat Echolocation Survey 9 2.3 Ecosystem Function Assessment 9 3.0 Monitoring Results 10 3.1 Flora 10 3.1.1 MP1 10 3.1.2 MP2 12 3.1.3 MP3 14 3.1.4 MP4 16 3.2 Fauna 18 3.2.1 MP1 18 3.2.2 MP4 22 3.3 Ecosystem Function Assessment 23 3.3.1 Native Vegetation Condition Assessment 23 3.3.2 Water Bodies Condition Assessment 24 4.0 Management Issues 25 4.1 Weeds 25 4.2 Pest Species 27 4.3 Unauthorised Access 27 4.4 Erosion 28 4.4.1 Waterways 28 4.4.2 Access Tracks 29 ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 3614_R04_Biodiversity Offset Area_Final 5.0 Summary 30 5.1 Flora 30 5.2 Fauna 30 6.0 Conclusions and Recommendations 32 7.0 References 34 Figures Figure 1.1 Locality Plan 2 Figure 2.1 Monitoring Point Locations 5 Figure 3.1 Threatened Fauna Records 21 Figure 4.1 Biodiversity Management Issues 26 Plates Plate 3.1 MP1 Photo North 10 Plate 3.2 MP1 Photo East 10 Plate 3.3 MP1 Photo South 10 Plate 3.4 MP1 Photo West 10 Plate 3.5 MP2 Photo North 12 Plate 3.6 MP2 Photo East 12 Plate 3.7 MP2 Photo South 12 Plate 3.8 MP2 Photo West 12 Plate 3.9 MP3 Photo North 14 Plate 3.10 MP3 Photo East 14 Plate 3.11 MP3 Photo South 14 Plate 3.12 MP3 Photo West 14 Plate 3.13 MP4 Photo North 16 Plate 3.14 MP4 Photo East 16 Plate 3.15 MP4 Photo South 16 Plate 3.16 MP4 Photo West 16 Plate 4.1 Feral pig track identified in Surveyors Creek during the 2018 monitoring survey 27 ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 3614_R04_Biodiversity Offset Area_Final Tables Table 2.1 CoordiCoordinatesnates of Biodiversity Offset Area Monitoring Points 4 Table 3.1 Summary of Flora Data Collected during Monitoring Surveys at Site MP1 11 Table 3.2 Summary of Flora Data Collected during MonitorinMonitoringg Surveys at Site MP2 13 Table 3.3 Summary of Flora Data Collected during Monitoring Surveys at Site MP3 15 Table 3.4 Summary of Flora Data Collected during Monitoring Surveys at Site MP4 17 Table 3.5 Summary of Fauna Data Collected during Monitoring Surveys at Site MP1 19 Table 3.6 Summary of Fauna Data Collected during Monitoring Surveys at Site MP4 23 Appendices Appendix 1 Flora List Appendix 2 Fauna List Appendix 3 OEH Data Sheets ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 3614_R04_Biodiversity Offset Area_Final 1.0 Introduction 1.1 Background The Orica Technology Centre (the site) is situated on the southern side of George Booth Drive, Richmond Vale, NSW (Figure 1.1). The Technology Centre commenced operation in 1991 as an explosives research and production facility. It comprises 292 hectares of predominantly open forest vegetation, of which 8 hectares is currently occupied by the existing Technology Centre operations. On 26 July 2010, development approval under Part 3A of the Environmental Planning and Assessment Act 1979 (EP&A Act) was granted for the continuation of the existing operations at the Technology Centre as well as the construction and operation of a proposed Ammonium Nitrate Emulsion (ANE) Production Facility. As a result of the potential impacts associated with the Project, a Biodiversity Offset Area has been developed to offset the impacts of the project on threatened species, endangered ecological communities (EECs) and their habitats. The Biodiversity Offset Area was increased from approximately 17 hectares to 31.7 hectares following consultation with the Office of Environment and Heritage (OEH) as part of the Response to Submissions process. A Vegetation Management Plan (Umwelt 2012a) was developed in consultation with the OEH – Conservation Partnerships Delivery Unit which outlined the need to undertake annual ecological monitoring of the Biodiversity Offset Area. The Vegetation Management Plan (VMP) was revised in 2015 (Umwelt 2015) and outlined the need to incorporate the annual ecological monitoring with the required annual reporting for the OEH Conservation Agreement to streamline the process and negate the need for multiple surveys. This combined annual ecological monitoring report and OEH Conservation Agreement report will satisfy the regulatory requirements of both the Department of Planning and Environment (DPE) and OEH. In 2012, four permanent ecological monitoring points were set up within the Biodiversity Offset Area. All four points were assessed for their flora characteristics and ecosystem function and two of the monitoring points were also assessed for their fauna characteristics. The data collected in 2012 provided baseline data for future monitoring to be compared against and enables targeted and adaptive management procedures to be implemented to ensure the biological integrity of the Biodiversity Offset Area is maintained or improved and conserved into the future. ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 Introduction 3614_R04_Biodiversity Offset Area_Final 1 Based on the results of the 2018 ecological surveys and the Biodiversity Offset Area Land Management Action Plan (LMAP) 2018-2019 (Hunter Land Management 2018), a number of management issues were identified that, if left un-managed would likely represent a threat to the biodiversity values of the Biodiversity Offset Area. These issues included: low to moderate density of weed species along the creek lines and vehicle tracks vertebrate pests unauthorised access and severe creek bank erosion. This biodiversity monitoring report presents the methods and results of the 2018 biodiversity monitoring program at the Orica Biodiversity Offset Area, including a discussion of the findings and comparisons with the results of the baseline data and subsequent monitoring surveys conducted between 2013 and 2017. Management recommendations that relate to the current monitoring phases are documented in Section 4.0. ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 Introduction 3614_R04_Biodiversity Offset Area_Final 3 2.0 Methods The following sections detail the methods employed for the 2018 biodiversity offset area monitoring program. The methods employed as part of this monitoring program are consistent with those outlined in the Vegetation Management Plan (Umwelt 2015) as well as those employed in the 2013 to 2017 biodiversity offset area monitoring programs. The locations of the monitoring points (MP) surveyed as part of the 2018 monitoring are provided in Figure 2.1, and the coordinates for each MP are provided in Table 2.1. Table 2.1 Coordinates of Biodiversity Offset Area Monitoring Points Monitoring Point Name Coordinates (MGA) Easting Northing MP1 362234.0 6362341.9 MP2 362087.5 6362271.3 MP3 361928.5 6362306.8 MP4 361936.4 6362395.8 The flora and fauna survey for the 2018 ecological monitoring of the Orica Biodiversity Offset Area was undertaken on the 24 and 25 July, 2018. The temperature during this period ranged from approximately 2°C to 23.5°C, there was no rainfall or wind over the two days (BOM, 2018). ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 Methods 3614_R04_Biodiversity Offset Area_Final 4 2.1 Flora Methods 2.1.1 Floristic Surveys Flora surveys were undertaken at all four monitoring points. The methods used were in accordance with the BioMetric field methodologies for measuring condition variables for site value and at reference sites documented in Appendix 4 of the Operational Manual for BioMetric 3.1 (DECCW 2011). A 20 metre by 50 metre permanent quadrat was established at each of the four monitoring points. Schematic 1 illustrates the manner in which each 20 metre by 50 metre plot was established. 20 m 20x20 m plot 50 m line transect 20 m 20 m Schematic 1 Vegetation Monitoring Plot Design The flora surveys, using the methods as outlined in the BioMetric field methodologies, (DECCW 2011) provide information on: floristic composition (including cover and abundance of species) and structure general health of vegetation (including weed density and dieback) evidence of natural recruitment presence of important habitat features such as tree hollows and nests evidence of feral animal usage signs of disturbance erosion and need for repair fire management success of any management programs implemented and other management issues. ORICA RICHMOND VALEBIODIVERSITY OFFSET AREA MONITORING REPORT – 2018 Methods 3614_R04_Biodiversity Offset Area_Final 6 2.1.2 Plant Identification and Taxonomic Review The flora specimens that were recorded or collected on-site were identified using the nomenclature and keys as described in Harden (1992, 1993, 2000 and 2002) and Wheeler et al. (2002). New changes to classification as identified from PlantNET (Botanic Gardens Trust 2018) were incorporated into floristic results. The common names used in floristic results follow those used in Harden (1992, 1993, 2000 and 2002). The common names used for this report are also a reflection of local names in cases where reference documents could not provide common names.