RAF DAWS HILL, HIGH WYCOMBE Interim Summary of Ecological Issues
Total Page:16
File Type:pdf, Size:1020Kb
TAYLOR WIMPEY RAF DAWS HILL, HIGH WYCOMBE Interim Summary of Ecological Issues May 2012 ECO2616.InterimSummary.dv1 COPYRIGHT The copyright of this document remains with Aspect Ecology. The contents of this document therefore must not be copied or reproduced in whole or in part for any purpose without the written consent of Aspect Ecology. PROTECTED SPECIES This report contains sensitive information relating to protected species. The information contained herein should not be disseminated without the prior consent of Aspect Ecology. LEGAL GUIDANCE The information set out within this report in no way constitutes a legal opinion on the relevant legislation. The opinion of a legal professional should be sought if further advice is required. Aspect Ecology Ltd Hardwick Business Park Noral Way Banbury Oxfordshire OX16 2AF t 01295 276066 f 01295 265072 e [email protected] w www.aspect-ecology.com RAF Daws Hill, High Wycombe ECO2616.InterimSummary.dv1 Interim Summary of Ecological Issues 1. Background & Proposals 1.1.1. Aspect Ecology has been commissioned by Taylor Wimpey to advise in respect of ecological matters at the site at RAF Daws Hill. 1.1.2. The site is located within the south of High Wycombe and comprises the former RAF Daws Hill Strike Command. The proposals for the site are for the clearance of the existing built form and construction of a new residential development with associated access roads and landscaping. 1.1.3. Ecological survey work at the site has previously been undertaken in 2008 (see Appendix 1). This survey work largely recorded the site to be of low ecological value, with ecological interest limited to the use of the site by bats (including a confirmed bat roost), an adjacent Local Wildlife Site (Keep Hill Wood LWS), and use of the adjacent woodland by Badgers. 1.1.4. In order to provide up to date survey information of the ecology at the site, Aspect Ecology has been commissioned to undertake an update Phase I survey of the site and update Phase II survey work in respect of bats and Badgers. 1.1.5. This report provides an interim summary of the current situation and ongoing survey work, along with any issues identified to date: 2. Surveys And Considerations Undertaken To Date Update Phase I survey 2.1.1. Update Phase I survey work has been undertaken at the site in March 2012 (see Plan 2616/IS1). This survey work recorded the site to remain largely as previously described, being dominated by buildings and hardstanding, with the majority of habitats of limited ecological value. However, it is considered that the trees within the site and the woodland edge along the northern site boundary are of some elevated ecological value. Offsite adjacent Keep Hill Wood LWS 2.1.2. Initial consideration has been given to the adjacent Keep Hill Wood Local Wildlife Site (LWS), located north of the site. The proposals will not directly affect the woodland, with the proposed development set back from the northern site boundary. However, this designation is directly accessible from the site and so the potential exists for the proposals to increase recreational pressure on the adjacent Keep Hill Wood LWS. 2.1.3. However, the topography within Keep Hill Wood LWS is steep and undulating, such that the majority of visitors to the woodland are likely stick to the established footpaths and bridleways. Indeed, Aspect Ecology has surveyed the public provision within the woodland, recording the pathways present (including their structure and state of repair), public signage, information boards, bins and benches, all of which appear well set up to receive visitors. 2.1.4. In addition, the proposals will be specifically designed to minimise indirect impacts on the adjacent woodland. As such, the proposals will incorporate a MAY 2012 / ASPECT ECOLOGY 1 RAF Daws Hill, High Wycombe ECO2616.InterimSummary.dv1 Interim Summary of Ecological Issues suitable buffer zone of vegetation along the northern site boundary, along with a sympathetic design of the adjacent development. Internal bat surveys 2.1.5. Previous survey work at the site highlighted a number of buildings that offer moderate or greater opportunities for roosting bats, including a single confirmed roost. As such, in order to update this survey data, internal bat surveys have been undertaken (where access has permitted) of all buildings with moderate or greater potential to support roosting bats. This survey work has been undertaken by suitably qualified ecologists, following Bat Conservation Trust Guidelines1. 2.1.6. This survey work recorded no evidence of bats within the inspected buildings. However, a number of buildings were recorded to support external features such as raised roofing felt and gaps in soffit boards, which could offer some potential for roosting bats. Badgers 2.1.7. The previous survey work at the site recorded Badgers within the offsite woodland, while this species is also likely to make some use of the site. During the most recent survey work, two small outlier setts were noted within the site, close to the northern boundary. It is likely that these setts will be retained within the woodland buffer zone, however should work affect these, or any new setts, consideration will need to be given to the provision of suitable safeguards and potentially safeguards. 3. Surveys And Considerations Currently Underway / To Be Undertaken Offsite adjacent Keep Hill Wood LWS 3.1.1. Discussions with Wycombe District Council are underway to agree the scope of any additional survey work, should any be required, in order to adequately assess the potential recreational impacts on the adjacent Keep Hill Wood LWS. This in turn will enable the scope of any mitigation to be determined, should it be considered that any is required. Emergence / return bat surveys 3.1.2. In line with Bat Conservation Trust guidance, all buildings with moderate or greater potential will be subject to further specific survey work in the form of dusk and dawn emergence/return surveys. We are now in the optimum season for undertaking these surveys and this work is currently underway. It is expected that this survey work will be ongoing for the next two to three months. 1 Hundt L (2012) Bat Surveys: Good Practice Guidelines, Second Edition, Bat Conservation Trust MAY 2012 / ASPECT ECOLOGY 2 PLANS PLAN 2616/ IS1 Habitats and Ecological Features APPENDICES APPENDIX 1 Previous Ecological Survey Work entitled ‘Site Disposal Report – Ecology’, August 2008 RAF Daws Hill Disposal Report - Ecology August 2008 Defence Estates Daws Hill Site disposal report - Ecology August 2008 Entec UK Limited i Contents 1. Introduction 1 1.1 Overview 1 1.2 Purpose of this report 1 2. Baseline information 3 2.1 Data sources 3 2.2 Desk study 3 2.3 Extended Phase 1 habitat survey 3 2.4 Bat survey 4 2.5 Badger survey 5 3. Implications for redevelopment 7 3.2 Nature conservation sites 7 3.3 Bats 7 3.4 Badgers 8 3.5 Birds 8 3.6 Reptiles 8 3.7 Other notable species 9 Figure 1.1 Site location Plan After Page 2 Figure 1.2 Site Layout Plan After Page 2 Figure 2.1 Statutory and Non Statutory Nature Conservation Sites After Page 6 Figure 2.2 Indicative Phase 1 Habitat Plan After Page 6 Appendix A Desk study information Appendix B Extended Phase 1 Habitat Survey Appendix C Bat survey Appendix D Badger survey h:\projects-mod\ea-210\#20000\20158 raf daws hill\1 client\reports\disposal reports\disposal report - ecology (final) August 2008 c054.doc 20158/C054 ii h:\projects-mod\ea-210\#20000\20158 raf daws hill\1 client\reports\disposal reports\disposal report - ecology (final) August 2008 c054.doc 20158/C054 1 1. Introduction 1.1 Overview 1.1.1 Defence Estates (DE) is disposing of a site in High Wycombe, Buckinghamshire, known as RAF Daws Hill. 1.1.2 Figure 1.1 shows the location of RAF Daws Hill1. The site is located on the south-east edge of High Wycombe, approximately 1.5km south of the town centre. The site includes office, technical and stores buildings, housing, a school and supporting infrastructure such as community and sport facilities. The site has previously been used by the United States Visiting Forces and was handed back to DE in April 2008. Today housing on site is temporarily occupied by MoD serving personnel and their families; the remainder of the site is vacant. 1.1.3 The site layout is shown on Figure 1.2. 1.2 Purpose of this report 1.2.1 Entec has been commissioned by DE to provide information which will inform the sale and disposal of the site. In order to provide information to potential bidders for the site, this report provides: • information on current (July 2008) desk study information on records of protected and notable species and statutory and non-statutory nature conservation sites within the site and up to 1km (species) and 2km (nature conservation sites) from the site; • the findings of an extended Phase 1 habitat survey undertaken by Entec (April 2008); • a summary of the results of a bat survey completed by Jones and Sons (July 2008); • a summary of the results of a badger survey completed by Humphries Rowell Associates (2002); and • an overview of the possible implications of ecological resources within and around the site for the redevelopment of the RAF Daws Hill site. 1 Please note that site boundaries shown on figures within this report are approximate. Refer to the Report on Title for details of the freehold boundary of this site. h:\projects-mod\ea-210\#20000\20158 raf daws hill\1 client\reports\disposal reports\disposal report - ecology (final) August 2008 c054.doc 20158/C054 2 h:\projects-mod\ea-210\#20000\20158 raf daws hill\1 client\reports\disposal reports\disposal report - ecology (final) August 2008 c054.doc 20158/C054 Key RAF Daws Hill site RAF Daws Hill Disposal Report - Ecology Figure 1.1 Site Location 0km 10 km August 2008 Scale 1:250,000 @ A4 20158-L27.cdr smitv Based upon the Ordnance Survey Map with the permission of the Controller of Her Majesty’s Stationery Office.