Ecological Impact Assessment
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Ecological Impact Assessment Middlemarch Environmental April 2020 RAYNERS LANE STATION CAR PARK, HARROW ECOLOGICAL IMPACT ASSESSMENT A Report to: CBRE Report No: RT-MME-130823-03 Date: April 2020 Triumph House, Birmingham Road, Allesley, Coventry CV5 9AZ Tel: 01676 525880 Fax: 01676 521400 E-mail: [email protected] Web: www.middlemarch-environmental.com Rayners Lane Station Car Park, Harrow RT-MME-130823-03 Rev A Ecological Impact Assessment REPORT VERIFICATION AND DECLARATION OF COMPLIANCE This study has been undertaken in accordance with British Standard 42020:2013 “Biodiversity, Code of practice for planning and development”. It is compliant with the best practice guidelines for Ecological Impact Assessment in the UK and Ireland, as defined by CIEEM (2018). Report Date Completed by: Checked by: Approved by: Version Hannah Train Tom Docker CEcol David Smith MCIEEM Rev A 14/04/2020 GradCIEEM (Senior MCIEEM (Ecology and Ecological Consultant) (Managing Director) Landscapes Director) Hannah Train Tom Docker CEcol David Smith MCIEEM Final 24/03/2020 GradCIEEM (Senior MCIEEM (Ecology and Ecological Consultant) (Managing Director) Landscapes Director) Tom Docker CEcol Ella Robinson BSc Dr Philip Fermor MCIEEM DRAFT 31/07/2019 (Hons) (Senior CEnv MCIEEM (Associate Director: Ecological Consultant) (Managing Director) EIA) The information which we have prepared is true, and has been prepared and provided in accordance with the Chartered Institute of Ecology and Environmental Management’s Code of Professional Conduct. We confirm that the opinions expressed are our true and professional bona fide opinions. DISCLAIMER The contents of this report are the responsibility of Middlemarch Environmental Ltd. It should be noted that, whilst every effort is made to meet the client’s brief, no site investigation can ensure complete assessment or prediction of the natural environment. Middlemarch Environmental Ltd accepts no responsibility or liability for any use that is made of this document other than by the client for the purposes for which it was originally commissioned and prepared. VALIDITY OF DATA The findings of this study are valid for a period of 24 months from the date of survey. If works have not commenced by this date, an updated site visit should be carried out by a suitably qualified ecologist to assess any changes in the habitats present on site, and to inform a review of the conclusions and recommendations made. Middlemarch Environmental Ltd. Page 1 Rayners Lane Station Car Park, Harrow RT-MME-130823-03 Rev A Ecological Impact Assessment NON-TECHNICAL SUMMARY This Ecological Impact Assessment (EcIA) has been prepared by Middlemarch Environmental Ltd in support of a planning application for a proposed development at Rayners Lane Station Car Park in Harrow, London. The EcIA provides an overview of any significant effects, both beneficial and adverse, on ecological features, which may result during the construction and operational phases of the proposed development. The EcIA has been produced based on current best practice guidance for assessing ecological impacts, as defined by the Chartered Institute for Ecology and Environmental Management (CIEEM, 2018). The ecological baseline conditions have been informed by survey work completed by Middlemarch Environmental Ltd at the site to date. The most notable ecological feature in relation to the proposed development is Rayners Lane Railsides, Borough Grade II Site of Importance for Nature Conservation (SINC), a non-statutory nature conservation site which forms the western portion of the site. In terms of species this nature conservation site has the potential to support foraging and commuting bats as well as reptiles. The site is also considered to offer suitable habitat for nesting birds, while foraging terrestrial mammals, including badger and hedgehogs may occasionally pass through the site. The main predicted construction phase effects are associated with direct habitat loss/damage, localised increase in air pollutants and potential harm to, or displacement or disturbance of, existing species on and adjacent to the site. Some minor vegetation clearance within Rayners Lane Railsides SINC will be required to facilitate the installation of surface water drainage. The construction phase of the development will be controlled by a Construction Ecological Management Plan (CEcMP) which will include best practice methods to avoid any significant ecological impacts, e.g. pollution prevention measures. Predicted operational phase effects include disturbance to species from lighting and degradation of habitat value due to inappropriate management and increased human presence. Proposed mitigation to address the predicted effects includes the implementation of a Biodiversity Enhancement and Management Plan (BEMP) and a Lighting Strategy. Provided that all recommended avoidance and mitigation measures are implemented, and compensation and enhancement is delivered, such as the provision of new nesting habitat for birds, the predicted ecological effects can either be avoided entirely or reduced to negligible significance. Middlemarch Environmental Ltd. Page 2 Rayners Lane Station Car Park, Harrow RT-MME-130823-03 Rev A Ecological Impact Assessment CONTENTS 1. INTRODUCTION ........................................................................................................................................ 5 1.1 PROJECT BACKGROUND ........................................................................................................................ 5 1.2 SITE DESCRIPTION AND CONTEXT .......................................................................................................... 5 1.3 DESCRIPTION OF PROPOSALS ................................................................................................................ 5 2. METHODOLOGIES.................................................................................................................................... 6 2.1 BASELINE ECOLOGICAL SURVEYS ........................................................................................................... 6 2.1.1 Desk Study ................................................................................................................................... 6 2.1.2 Phase 1 Habitat Survey ............................................................................................................... 6 2.1.3 Breeding Bird Survey ................................................................................................................... 6 2.1.4 Preliminary Bat Roost Assessment ............................................................................................. 7 2.1.5 Japanese Knotweed Survey ........................................................................................................ 7 2.2 SCOPE OF THE ECOLOGICAL IMPACT ASSESSMENT ................................................................................. 8 2.3 CONSULTATION ..................................................................................................................................... 8 2.4 IMPACT ASSESSMENT ............................................................................................................................ 8 2.4.1 Features of Ecological Importance .............................................................................................. 8 2.4.2 Determining Importance ............................................................................................................... 8 2.4.3 Characterising Impacts ................................................................................................................ 9 2.4.4 Determining Significant Effects .................................................................................................... 9 3. BASELINE ECOLOGICAL CONDITIONS AND EVALUATION ............................................................. 10 3.1 DESK STUDY ....................................................................................................................................... 10 3.1.1 Introduction ................................................................................................................................ 10 3.1.2 Nature Conservation Sites ......................................................................................................... 10 3.1.3 Protected/Notable Species ........................................................................................................ 11 3.1.4 Invasive Species ........................................................................................................................ 13 3.2 HABITATS ............................................................................................................................................ 14 3.2.1 Phase 1 Habitat Survey ............................................................................................................. 14 3.3 SPECIES ............................................................................................................................................. 17 3.3.1 Amphibians ................................................................................................................................ 17 3.3.2 Bats ............................................................................................................................................ 17 3.3.3 Badgers .....................................................................................................................................