Chisholm Trail, Cambridge Ecological Report
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Chisholm Trail, Cambridge Ecological Report 5078644/Option Assessment Report - Appendix C - Ecology Report V2.doc Chisholm Trial, Cambridge Ecological Report Notice This ecological report is intended for advice only in respect of project design, site layout and/or site investigation and is not for use as part of a supporting statement to a planning application nor within an Environmental Impact Assessment. Further ecological surveys and an ecological impact assessment may be required. This report is prepared by Atkins Limited for the sole and exclusive use of Cambridgeshire County Council in response to their particular instructions. No liability is accepted for any costs claims or losses arising from the use of this report or any part thereof for any purpose other than that for which it was specifically prepared or by any party other than Cambridgeshire County Council. This report has been prepared by an environmental specialist and does not purport to provide legal advice. You may wish to take separate legal advice' Atkins Limited Document History JOB NUMBER: 5078644 DOCUMENT REF: P:\GBCBA\DE2\Assessment\5078644.003 Chisholm Cycleway\40 A Draft to client DP MA JW 11/05/09 Revision Purpose Description Originated Checked Reviewed Authorised Date 5078644/Option Assessment Report - Appendix C - Ecology Report V2.doc Ecological Report Contents Section Page 1. Introduction 4 2. Methodology 5 2.1 Desk Study 5 2.2 Field Survey 5 3. Existing Conditions 7 3.1 Desk Study 7 3.2 Field Survey 8 4. Potential Constraints, Mitigation and Further Survey 12 4.1 Potential Constraints 12 4.2 Mitigation and Further Survey 12 5. Conclusions 15 Appendices Appendix 1 - Phase 1 Habitat Plans and Target Notes 17 Appendix 2 - Map showing areas not accessible to survey 21 Appendix 3 - Record Search Results 26 Appendix 4 - Legislation Table 47 5078644/Option Assessment Report - Appendix C - Ecology 3 Report V2.doc Ecological Report 1. Introduction Atkins Limited was commissioned by Cambridge County Council to undertake an ecological constraints assessment as part of the feasibility study into the Chisholm Trail cycleway, Cambridge. An extended Phase 1 habitat survey was undertaken, to highlight ecological features and map existing habitats enabling overall nature conservation evaluation and noting potential constraints. The Chisholm Trail is intended to provide a direct link from Milton Road to the railway station following the path of the railway as closely as possible. No information has been provided regarding preferred routes for the new cycleway. A large study area was provided and a broad survey area was used to highlight any possible ecological issues within it in order to inform the selection of a route for the cycle way. The study area is shown on the Phase 1 habitat plans in appendix 1. This report provides details of: . desk study was undertaken to obtain records of protected and notable species, statutory and non-statutory sites within the study area and up to 1km form its boundary; . Extended Phase 1 habitat survey of the study area undertaken on the 16th and 17th of April 2009; . an assessment of ponds within 500 m and habitat in the study area for suitability for use by great crested newts; . identification of likely constraints associated with study area; . details of the further survey work which may be required relating to the habitats in the study area; . conclusions and recommendations 5078644/Option Assessment Report - Appendix C - Ecology 4 Report V2.doc Ecological Report 2. Methodology 2.1 Desk Study The MAGIC (Multi Agency Geographical Information for the Countryside) website (www.magic.gov.uk) and the Natural England website (ww.natureonthemap.org.uk) were used to identify all statutory designated sites of importance for nature conservation within 1km of the site, and 2 km up and down stream of the river Cam. Ordnance Survey maps were used to identify the presence of any ponds within 500 m of the application site. Great crested newts, a European Protected Species, can use suitable terrestrial habitat up to 500 m from a breeding pond1 although latest research suggests that newts are likely to travel no more than 250 m from ponds when suitable habitats for foraging and hibernation exist within this distance around their pond2. As a precaution, the search area for water bodies covered a 500m zone around the application site so that this information could be taken account of during further assessment following the site visit. It must be noted that the search for ponds did not include garden ponds as these rarely show up on Ordnance Survey maps. Cambridgeshire and Peterborough Biological Records Centre (CPBRC) were contacted for information relating to non-statutory designated sites of nature conservation importance and legally protected and notable species records within 1 km of the study area. The UK Biodiversity Action Plan (BAP) website (http://www.ukbap.org.uk/default.aspx) was reviewed for priority species and habitats within the UK and Cambridgeshire BAP to determine which of these are present (or may be present) within the boundary of the proposed works. 2.2 Field Survey A walk-over ecological survey of the site and its immediate surrounds was undertaken on 16th and 17th of April 2009 broadly following the ‘Extended Phase 1’ methodology as set out in Guidelines for Baseline Ecological Assessment (Institute of Environmental Assessment 1995). The extended Phase 1 habitat survey provides information on the habitats in the survey area and appraises the intrinsic value of the habitats of the site and the immediate adjacent lands and its ability to support notable fauna. The extent of the study area is shown on the Phase 1 habitat plans in Appendix 1. The plans in Appendix 2 identifies areas within the study area where direct access was not available and web based aerial photographs from the multimap site were used to gain an idea of these areas habitats. Preliminary investigations were also undertaken in respect of the presence of legally protected species: . search for potential roosting sites for bats, such as trees, bridges and buildings with suitable features; . checks were made for the presence of water bodies in or immediately adjacent to the study area to the site and their potential to support great crested newts asses using a habitat suitability index (HSI); . assessment of habitats for nesting birds including the buildings and vegetation in the study area; . the suitability for watercourse to support water vole; 1 Great crested newt mitigation guidelines, English Nature, 2001 2 English Nature report (ENRR) Number 576, ‘An assessment of the efficiency of capture techniques and the value of different habitats for the great crested newt Triturus cristatus’. 5078644/Option Assessment Report - Appendix C - Ecology 5 Report V2.doc Ecological Report . the suitability of habitats in the study area to support other protected or notable species such as badger; . the site was surveyed for the presence of injurious or invasive weeds. Limitations to Survey Ecological surveys are limited by factors which affect the presence of plants and animals such as the time of year, migration patterns and behaviour. The ecological survey of this site has not therefore produced a complete list of plants and animals and the absence of evidence of any particular species should not be taken as conclusive proof that the species is not present or that it will not be present in the future. Nevertheless, the results of this ecological survey have allowed an evaluation of the likely use of the site by legally protected species and the requirement for further survey and/or mitigation works for these species depending on the route of the preferred option. During the Atkins field survey in April 2009 some sections of the study area were not accessible such as private land (housing and industrial) and rail track. Every effort was made using bridges and vantage points to visually asses these areas. In addition, aerial photograph were used to gain an assessment of the habitat types present. Gardens and private property was not accessible for survey during however as the proposed cycle route will not affect these this will not be included in the study. Once the route is confirmed some of the areas may require specific access arrangements in order to assess the habitats further, these are detailed in the section 4 below. 5078644/Option Assessment Report - Appendix C - Ecology 6 Report V2.doc Ecological Report 3. Existing Conditions 3.1 Desk Study Statutory Sites The desk study highlighted three statutory sites, Local Nature Reserves (LNR). One of the LNR’s falls within the study area and therefore is described within the target notes below. The three sites identified are set out in the table below: Table 1: Designated Sites within 1km of the site Designation Site Distance from study Direction away from area study area LNR Bramble Fields Within the study N/A area, TN 10 LNR Logan’s Meadow 150 m West LNR Barnwell West 830 m East No statutory sites were located within 2km up or down stream of the river Cam where it crosses the study area. Non-Statutory Sites The records from Cambridgeshire and Peterborough Biological Records Centre highlighted, three County Wildlife Sites, two of which are within the study area. In addition to this 17 City Wildlife Sites were highlighted within 1km of the study area, six of these are within the study area. Table 2: Non-statutory sites Designation Site Distance from Direction study area away from study area County Wildlife Site Coldham’s Common Within study area N/A County Wildlife Site River Cam Within study area N/A County Wildlife Site Cambridge Botanic 330 m south Gardens City Wildlife Site Stourbridge Common Within study area N/A City Wildlife Site Dittons Meadow Within study area N/A City Wildlife Site Barwell Junction Disused Within study area N/A railway City Wildlife Site Barnwell Pit Within study area N/A City Wildlife Site Coldham’s Brook Within study area N/A City Wildlife Site Mill Road Cemetery 240 m West City Wildlife Site St.