NORTHAMPTONSHIRE COUNTY COUNCIL FIRE & RESCUE SERVICE FIRE TRAINING FACILITY, FORMER CHELVESTON RAF BASE Ecological Assessment July 2011 2529.EcoAs.vf1 Fire Training Facility, Former RAF Base Chelveston 2529.EcoAs.dv1 Ecological Assessment DRAFT 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 APRIL 2011/ ASPECT ECOLOGY 1 CONTENTS 1. INTRODUCTION............................................................................................... 2 2. SURVEY METHODOLOGY............................................................................... 2 3. ECOLOGICAL DESIGNATIONS ....................................................................... 5 4. HABITATS & ECOLOGICAL FEATURES.......................................................... 6 5. FAUNAL USE OF THE SITE ............................................................................. 9 6. ECOLOGICAL EVALUATION & ASSESSMENT OF PROPOSALS................. 13 7. POLICY REVIEW ............................................................................................ 24 8. SUMMARY & CONCLUSIONS........................................................................ 27 PLANS PLAN 2529/ECO1 Site Location PLAN 2529/ECO2 Ecological Designations PLAN 2529/ECO3 Habitats & Ecological Features PHOTOGRAPHS PHOTOGRAPH 1 Buildings B1 – B4 PHOTOGRAPH 2 Building B8 (example structure of buildings B5 – B8) PHOTOGRAPH 3 Grass-covered hard-standing PHOTOGRAPH 4 Off-site planted woodland PHOTOGRAPH 5 Off-site pasture field PHOTOGRAPH 6 Off-site pond PHOTOGRAPH 7 Rubble piles adjacent to building B1 PHOTOGRAPH 8 Dead tree T1 PHOTOGRAPH 9 Mature pollarded Ash tree T2 APPENDICES APPENDIX 1 Information obtained from Multi-Agency Geographic Information for the Countryside (MAGIC) and Nature on the Map (Natural England) online databases APPENDIX 2 Information obtained from the National Biodiversity Network database APPENDIX 3 Summary tables of Great Crested Newt surveys Fire Training Facility, Former RAF Base Chelveston 2529.EcoAs.vf1 Ecological Assessment 1. INTRODUCTION 1.1. Background & Proposals 1.1.1. Aspect Ecology was commissioned in March 2011 by Northamptonshire County Council Fire and Rescue Service to undertake an ecological assessment in respect of land in the north-western corner of the former RAF Base Chelveston (see Plan 2529/ECO1). As stated in paragraph 2.2.1 below, numerous previous ecological studies have been conducted by Aspect Ecology at the site and wider study area in relation to other planning applications. 1.1.2. The proposals are for the re-use of the existing former military buildings and areas of hard-standing to create a new fire training facility. 1.2. Site Characteristics 1.2.1. The site is located in the north-western corner of the former RAF Base in Chelveston. The site itself is composed of an area of hard-standing colonised by grassland and a partially colonised tarmac road, which leads to five disused Nissan hut-style structures. Other habitats adjacent to the site and within the wider survey area include plantation woodland, pasture, a hedgerow, a pond and a further 3 disused Nissan hut-style structures. 1.3. Ecological Assessment 1.3.1. This document assesses the ecological interest of the site as a whole. The importance of the habitats and species present is evaluated. Where necessary, mitigation measures are recommended so as to safeguard any significant existing ecological interest within the site and where appropriate, opportunities for ecological enhancement are proposed with reference to national and local Biodiversity Action Plans (BAPs). JULY 2011/ ASPECT ECOLOGY 1 Fire Training Facility, Former RAF Base Chelveston 2529.EcoAs.vf1 Ecological Assessment 2. SURVEY METHODOLOGY 2.1. The methodology utilised for the survey work can be split into 3 main areas: a desktop study, habitat survey, and faunal survey. These are discussed in more detail below. 2.2. Desktop Study 2.2.1. The following documents, which relate to proposed developments of a larger scale, in the wider study area of the RAF base were reviewed due to the detailed background information which had been collated and the extensive survey work which had been undertaken. Biomass Application: • Ecological Assessment (April 2008) ECO-1026.EcoAs(Biomass).vf Wind Farm Application: • Chapter 13 of Environmental Statement (2009) • Chapter 12 of Environmental Statement (2010) • Updated ES Addendum (October 2010) ECO-1026.ES Addendum.vf 2.2.2. In order to update the background information on the site and its immediate surroundings information on statutory designated sites was obtained from the online Multi-Agency Geographic Information for the Countryside (MAGIC) database, which utilises data provided by Natural England, and Natural England’s website (www.natureonthemap.org.uk). This information is reproduced at Appendix 1, and where appropriate on Plan ECO2. 2.2.3. The National Biodiversity Network (NBN) database was also searched for any relevant biological records of nature conservation interest within the locality. Relevant information is reproduced at Appendix 2. 2.3. Habitat Survey 2.3.1. The site and immediately adjacent habitats were surveyed in March 2011 in order to ascertain the general ecological value of the land contained within the boundaries of the site and to identify the main habitats associated with the site. 2.3.2. The survey work was based on extended Phase 1 survey methodology (Joint Nature Conservation Committee, 20101), as recommended by Natural England, whereby the habitat types present are identified and mapped, together with an assessment of the species composition of each habitat. This technique provides an inventory of the basic habitat types present and allows identification of areas of greater potential which require further survey. Any such areas identified can then be examined in more detail. 2.3.3. Using the above method, the site and adjacent land was classified into areas of similar botanical community types, with a representative species list compiled for each habitat identified. 1 Handbook for Phase 1 habitat survey: A technique for environmental audit. JNCC, 2010. JULY 2011/ ASPECT ECOLOGY 2 Fire Training Facility, Former RAF Base Chelveston 2529.EcoAs.vf1 Ecological Assessment 2.3.4. All of the species that occur in each habitat would not necessarily be detectable during survey work carried out at any given time of the year, since different species are apparent at different seasons. The survey was undertaken within the seasonal period for botanical work; accordingly, it is considered that a robust assessment of the intrinsic ecological interest of the site was made. 2.4. Faunal Surveys 2.4.1. General faunal activity, such as mammals or birds observed visually or by call during the course of the surveys was recorded. Specific attention was also paid to the potential presence of any protected, rare or notable species, and specific survey work was undertaken for bats and Badger Meles meles. Bats2 2.4.2. Buildings. The buildings within the site (B1 – B5) are to be renovated/refurbished and re-used under the proposals and were therefore subject to internal, where possible, and external inspection surveys using ladders, torches, mirrors and binoculars where necessary to check for potential bat use. 2.4.3. Evidence of the presence of bats was searched for with particular attention paid to any roof spaces and gaps between rafters and beams. Specific searches were made for bat droppings that can indicate present or past use and the extent of use, whilst other signs that can indicate the possible presence of bats were also searched for, e.g. presence of stained areas or feeding remains. 2.4.4. The opportunity was also taken to conduct inspections, based on the methodology above, of the three buildings (B6-B8) located on the north- western edge of the plantation woodland. 2.4.5. Trees. An examination of the trees within the plantation woodland and immediately adjacent to the site was undertaken to search for the presence of features which could be of potential value to roosting bats such as splits, cracks, rot holes, coverings of Ivy, peeling bark or similar. The potential for the trees to support roosting bats has been ranked in accordance with the criteria set out in the Bat Conservation Trust (BCT) guidelines: • Category 1 – confirmed bat roost tree with field evidence of the presence of bats (e.g. droppings, scratch marks, grease marks or urine staining). • Category 2a – trees that have a high potential to support bat roosts. This includes trees displaying extensive splits, cavities, rot/woodpecker holes, large areas of peeling bark, dense Ivy cover and or a combination of those features listed above which may also be uncommon in the local area. • Category 2b – trees with a moderate/low potential to support bat roosts. This includes trees