Planning proposal
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- 2.0 Background Information 2.1. Previous Proposal and Current Proposed Rezoning
- 2.2. Location of the Study Site and Access
- 2.3. Key Definitions The survey area is
- Soils and Geomorphology
9 2.0 Background Information 9 2.1. Previous Proposal and Current Proposed Rezoning 9 2.2. Location of the Study Site and Access 10 2.3. Key Definitions 10 2.4. Soils, Topography and Geology 10 Topography 10 Soils and Geomorphology 11 2.5. Land use and Disturbance History 13 Study Site 13 Adjacent Lands 16 Fire History and Weed Invasion 16 3.0 Flora Survey 17 3.1. Survey and Assessment Methodology 17 Vegetation Communities 17 Threatened Flora Species Searches and Occurrence Assessment 18 Survey Limitations 18 3.2. Flora Survey Results 19 Site Vegetation Communities 19 3.3. Threatened Ecological Communities 27 3.4. Threatened Flora 34 Survey Results 34 Potential Occurrence Assessment 34 4.0 Fauna and Habitat Survey and Assessment 34 4.1. Survey Methods 34 Habitat Evaluation 35 Koala Survey 35 Hollow Bearing Tree Survey 35 Secondary Evidence and Direct Observations 36 Limitations 36 4.2. Corridors and Key Habitats 36 Regional Corridors 36 Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 4 Sub-regional Corridors 37 Local Corridors and Habitat Links 37 Key Habitat 37 4.3. Fauna Survey Results 39 Habitat Evaluation 39 Secondary Evidence 44 Opportunistic observations 44 Total Fauna Observed 44 Locally Recorded Threatened Fauna 44 4.4. Potential Occurrence Assessment 46 New South Wales 47 Commonwealth 47 Migratory Species 50 5.0 SEPP 44 - Koala Habitat Assessment 53 5.1. Potential Koala Habitat 53 Introduction 53 Methods and Results 53 5.2. Core Koala Habitat Assessment 53 Overview of Koala Ecology 53 Site Core Koala Habitat Assessment 58 Discussion and Conclusion 63 6.0 Groundwater Dependent Ecosystem Assessment 64 6.1. Introduction 64 6.2. Groundwater Dependent Ecosystem Identification 64 Overview 64 Desktop Review of the Study Site in the GDE Context 65 Conclusion 66 6.3. Groundwater Dependent Ecosystems Risk Assessment 67 Overview of GDE RISK Assessment Methodology 67 Type and Location of GDE 68 Groundwater Dependency Assessment 70 GDE - Ecological Value Assessment 71 GDE Impact Risk Assessment 76 The Risk Matrix 80 Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 5 Conclusion 85 7.0 Conclusion 86 8.0 References 87 Appendix 1: Site flora species list 92 List of Figures Figure 1: Location of the study site .................................................................................................................. 12 Figure 2: GTCC LEP zoning map. ................................................................................................................... 14 Figure 3: Quaternary geology .......................................................................................................................... 15 Figure 4: Vegetation communities of the study site ......................................................................................... 23 Figure 5: OEH regional corridors and key habitats ......................................................................................... 38 Figure 6: Local Koala records .......................................................................................................................... 60 Figure 7: Coastal GTCC Koala records ........................................................................................................... 62 Figure 8: Ecological valuation and risk assessment process. ......................................................................... 67 Figure 9: GDE Risk Matrix ............................................................................................................................... 81 List of Tables Table 1: Low Swamp Forest 19 Table 2: Wet Heath 24 Table 3: Miscellaneous aquatic vegetation 26 Table 4: Review of TECs and endangered populations 28 Table 5: Threatened flora species recorded in the locality 34 Table 6: Habitat evaluation summary 39 Table 7: Fauna recorded on and adjacent to the site 44 Table 8: Threatened species recorded in the locality 45 Table 9: Threatened fauna potentially occurring in the locality 46 Table 10: Threatened species potentially occurring on the site/study area 47 Table 11: EPBC Act threatened fauna species potential occurrence assessment 48 Table 12: EPBC Act migratory species potential occurrence assessment 50 Table 13: Preferred koala browse species in the GTCC coastal LGA 55 Table 14: Aquifer/GDE summary information sheet 68 Table 15: Groundwater dependency assessment 70 Table 16: General aquifer ecological valuation 72 Table 17: Identification of the ecological value of individual GDEs within an aquifer 73 Table 18: Aquifer/GDE impact checklist for a proposed activity 76 Table 19: Aquifer and GDE risk assessment 78 Table 20: Risk matrix management actions 82 Table 21: Management requirements and actions 84 Table 22: Site flora species list 92 Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 6 List of Photos Photo 1 : Upper strata of soil profile at edge of survey site 11 Photo 2: Channel near southern boundary of survey site with spoil. 13 Photo 3: Historical evidence of machinery disturbance on west side of access road 16 Photo 4: Wet heath from southern boundary 26 Photo 5: Shallow dam on Lot 18 view east 27 Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 7 Executive Summary Naturecall Environmental were requested by PDA Services to perform the required ecological assessments at the Seashells Resort, Lot 18 DP 576414, Diamond Beach for a proposed re-zoning and planning proposal. To allow the potential for future intensification of development over the eastern end of the subject land, the current proposal seeks to rezone Lot 18 from RU1 Primary Production to SP3 Tourist Zone and E2 Environmental Conservation under the provisions of Greater Taree City Council Local Environmental Plan 2010. The proposed E2 Environmental Conservation zone would include the ~2 hectare remnant native vegetation in the western end of the Lot, which was the focus of this assessment. The subject land in total is approximately 5.431ha, and located behind Diamond Beach. The subject land is largely cleared and maintained, aside from remnant native vegetation in the western end. The latter is low lying with a high watertable, with associated influences on the vegetation. NSW Planning & Environment (NSWP&E) have requested “an assessment of the ecological values of the site, particularly the Coastal Heath Paperbark community including its hydrological needs and habitat values, and justification for the zone boundary and 1 hectare minimum lot size”. To provide the client with the necessary information to address NSWP&E’s request, the ecological assessment focussed on the native vegetation in the west of the subject land, and aimed to determine the following: • Confirm presence/absence of any threatened flora species eg Allocasuarina defungens. • Assessment potential for threatened frogs to occur ie Wallum Froglet. • Assess site for Koala habitat (due to presence of Swamp Mahogany) • Assessing the vegetation communities’ in line with the Groundwater Dependant Ecosystem’s (GDE) specifications to determine hydrological values and sensitivity to impact as per NSW P&E’s requirements. • Identify potential threats and impacts to be mitigated in the future development. The survey found two vegetation communities in good to excellent condition in the western end of Lot 18: low swamp forest and wallum wet heath. Neither is an Endangered Ecological Community under NSW or Commonwealth legislation. No threatened flora species were recorded on the site and none were considered likely potential occurrences. The vegetation has some key fauna habitat components (eg Swamp Mahogany) but lacks others eg tree hollows. Fragmentation, edge effects and limited connectivity were key constraints on its fauna values. Its best value was for mobile nectivores species such as the Grey-headed Flying Fox and Little Lorikeet, although a remnant population of Wallum Froglet is a low possibility. While containing about 90 Swamp Mahogany (all stunted) and local records, the site evidenced no usage by Koalas and hence is not Core Koala Habitat. Koalas may use the site habitat for temporarily for refuge during local non-breeding home range movements and dispersal. Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 8 The two native vegetation communities were identified and assessed under the the Risk Assessment Guidelines for Groundwater Dependent Ecosystems (GDEs). This assessment determined that the two vegetation communities were phreatophytic (plants that meet their water demand by water uptake from the groundwater or its capillary fringe), hence qualified as GDEs with an obligate to proportional dependence on groundwater. These particular communities were also High Ecological Value but also high risk (vulnerable) to impacts. The outcome from application of the GDE risk assessment framework to the two GDEs present in the survey site of Lot 18 are: • Both GDEs appear to be highly dependent on groundwater in the obligate to proportional dependence range for the species comprising their respective communities, and therefore the ecosystems as a whole; • The overall ecological value of the GDEs on Lot 18 is high (HEV); • Impact from the proposed development is considered likely if potential threats are not adequately mitigated via effective measures; • The overall risk to ecological value of the GDEs is high due to their sensitivity; • As a result of the above, management requirements are required eg protection of aquifer and GDE catchment/subcatchments and monitoring to ensure no change to risk. The GDE risk assessment illustrated that for future development to proceed, at the Development Application stage, it must demonstrate that a suitable buffer is maintained with effective stormwater and nutrient management and water-sensitive urban design (WSUD) solutions. Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 9 1.0 Introduction Biodiversity Australia Pty Ltd Trading as Naturecall Environmental (hereafter referred to as ‘Naturecall’) was requested by PDA Services to undertake the required ecological assessment to support the rezoning of Lot 18 DP 576414, Diamond Beach Rd, Diamond Beach. This assessment will form part of a Planning Proposal that will be submitted to Greater Taree City Council (GTCC). The study site is currently zoned RU1 Primary Production under the provisions of Greater Taree Local Environmental Plan 2010 (GTCC LEP 2010). The proposal is rezone the 5.431ha of currently rural land into tourism and environmental protection. As part of preliminary assessment, NSW Planning & Environment (NSWP&E) have requested “an assessment of the ecological values of the site, particularly the Coastal Heath Paperbark community including its hydrological needs and habitat values and justification for the zone boundary and 1 hectare minimum lot size”. To provide the client with the necessary information to address NSWP&E’s request, the ecological assessment focussed on the native vegetation in the west of the subject land, and aimed to determine the following: • Confirm presence/absence of any threatened flora species eg Allocasuarina defungens. • Assessment potential for threatened frogs to occur ie Wallum Froglet. • Assess site for Koala habitat (due to presence of Swamp Mahogany) • Assess the vegetation communities’ in line with the Groundwater Dependant Ecosystem’s (GDE) specifications to determine hydrological values and sensitivity to impact as per NSW P&E’s requirements. • Identify potential threats and impacts to be mitigated in the future development. The survey and assessment was performed in consideration of the draft Threatened Species Survey and Assessment – Guidelines for Developments and Activities (DEC 2004). The assessment has also been undertaken in accordance with the Ecological Consultants Association of NSW – Code of Ethics (2002) available at www.ecansw.org.au. 2.0 Background Information 2.1. Previous Proposal and Current Proposed Rezoning Lot 18 DP 576415 is presently occupied by Seashells Beachfront Resort, a single storey resort consisting of 37 units, administration centre, recreation facilities (tennis court etc) and a bistro. The remainder of the Lot is maintained as lawns/parkland, apart from remnant native vegetation in the western end. A tar sealed access road bisects the remnant native vegetation entering the property from the southwest. This road continues up to the resort’s buildings located at the eastern end of the property close to the hind dune of Diamond Beach. Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 10 The proponents previously lodged a re-development proposal (refer DA No. 329/2010/DA) for the construction of units to a maximum height of 12 metres for tourist and permanent (up to 30%) residential accommodation. The building footprint could include the existing Seashells Beachfront Resort as well as the cleared area to the west (~150m), up to and including part of the dam located on the property (some part filling of the existing dam was proposed). To allow this or similar future development, the current proposal seeks to rezone the site from RU1 Primary Production to SP3 Tourist Zone and E2 Environmental Conservation under the provisions of the Greater Taree Local Environmental Plan 2010. The proposed E2 Environmental Conservation zone would include the ~2 hectare remnant native vegetation in the western end of the site. 2.2. Location of the Study Site and Access As shown in Figure 1, the study site (Lot 18 DP 576415 or 363 Diamond Beach Road, Diamond Beach Road) in total is approximately 5.431ha, and is located behind Diamond Beach, north of the village of Diamond Beach (1.7km north), in the coastal area of the Greater Taree City Council Local Government Area (GTCC LGA). Primary access is via a driveway branching off Diamond Head Rd. 2.3. Key Definitions The survey area is defined as the ~2ha area of remnant native vegetation along the western boundary of Lot 18 DP 576415, and was the focus of this assessment. The study site is defined as the land subject to the proposed rezoning ie Lot 18 DP 576415, which is ~5.431ha in area. The study area is land within an at least 100m radius of the site (minimum extent to which indirect impacts such as edge effects will be detectable), and the locality is land within a 10km radius of the site. 2.4. Soils, Topography and Geology Topography The study site falls on the back of a narrow barrier dune system with slope falling to the west. Elevation ranges from R.L. 10.5m AHD at the eastern boundary of the site (near the foredune), sloping gradually to the west to A possibly artificial drainage line (first order) runs southeast to northwest across the survey area, running offsite and eventually joining Moor Creek to the northwest. This feature may have originally been a natural swale but appears to have been augmented by excavation in the past (very straight alignment and consistent depth) in an attempt to reduce waterlogging and hence improve use of land upstream. It is ~1.5m deep from ground level to bottom of the bed, and appears to maintain a more or less constant water depth of 50cm. It is piped under the Seashells access road via a culvert. Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 11 South of this readily distinguishable drainage line lies a smaller drainage line which also bears evidence of past excavation. It is ~90cm deep from ground level to the bottom of the channel. Soils and Geomorphology As shown in Figure 3, the study area lies on the Coastal Barrier, on two quaternary geological surface units (Troedson & Hashimoto 2008): • Dune: Described as marine sand; predominantly fine to very fine quartzose sand. The current Seashells Resort footprint essentially occupies this mapped geological zone. These soils are typically low in nutrient and free draining. • Backbarrier flat: Described as marine sand, indurated sand, silt, clay, gravel, organic mud and peat. The soils of this unit are predominantly medium to fine quartzose sand to clayey sand. The dam area and the survey site (remnant native vegetation) lie on this geological zone. Photo 1 : Upper strata of soil profile at edge of survey site Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 12 Figure 1: Location of the study site Lot 681 Lot 18 DP576414 Lot 2 Lot 16 Lot 1 DP 1139255 Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 13 2.5. Land use and Disturbance History Study Site As shown in Figure 2, the site is currently zoned as RU1 Primary Production under the GTCC Local Environmental Plan (LEP) 2010. The property is used for tourism accommodation purposes, and was probably used for pasture previously as other land in the area was previously (pers. obs.). As a result, outside the western remnant, the grounds are generally kept mown with some minor remnant native vegetation and landscape plantings. The remnant native vegetation present in the west of the study site was likely retained due to being considered poor agricultural land. Nevertheless, in addition to excavation to deepen or establish the drainage line, the southern portion of remnant native vegetation (which supports low forest) has undoubtedly been disturbed in the past as indicated by its age and development. Heavy machinery has worked here in the past as evidenced by the ‘spoil’ beside the two drainage lines. One minor log pile including a root mass would also indicate previous machinery disturbance. It is estimated that these disturbance events would have occurred <25 years ago. Photo 2: Channel near southern boundary of survey site with spoil. Excavated material Ecological Assessment | Rezoning – Lot 18 DP 576414, Diamond Beach | January 2016 25> Download 0.87 Mb. Do'stlaringiz bilan baham: |
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