Brechfa Forest Connection Environmental Statement
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Western Power Distribution Brechfa Forest Connection Environmental Statement Appendix 10.4 EPS Licence Application – Dormice Method Statement . OCTOBER 2014 RSK GENERAL NOTES Project No.: 855587 Title: Brechfa Forest Connection - Dormouse EPS Licence Application – Method Statement Client: Western Power Distribution Date: October 2014 Office: Hemel Hemstead Status: Draft Technical Author Rosy Benbow reviewer Simon Boulter Signature Signature Date: 15/10/14 Date: 15/10/14 Quality reviewer Project manager Victoria Gilbey [optional] Signature Signature Date: 23/10/14 Date: RSK Environment Ltd (RSK) has prepared this report for the sole use of the client, showing reasonable skill and care, for the intended purposes as stated in the agreement under which this work was completed. The report may not be relied upon by any other party without the express agreement of the client and RSK. No other warranty, expressed or implied, is made as to the professional advice included in this report. Where any data supplied by the client or from other sources have been used, it has been assumed that the information is correct. No responsibility can be accepted by RSK for inaccuracies in the data supplied by any other party. The conclusions and recommendations in this report are based on the assumption that all relevant information has been supplied by those bodies from whom it was requested. No part of this report may be copied or duplicated without the express permission of RSK and the party for whom it was prepared. Where field investigations have been carried out, these have been restricted to a level of detail required to achieve the stated objectives of the work. This work has been undertaken in accordance with the quality management system of RSK Environment Ltd. Western Power Distribution Brechfa Forest Connection – EPS Licence Application – Dormouse Method Statement 855587 A. EXECUTIVE SUMMARY Western Power Distribution wishes to develop a new grid connection between Brechfa West wind farm to an existing overhead tower line near Llandyfaelog, approximately 10 km south of Carmarthen. This will connect the Brechfa Forest West wind farm to the distribution network. This report has been produced as part of an application for a licence to undertake works that will affect Dormice. The works include the clearance of woodland and associated scrub at various locations along the length of the Proposed Development, and the ongoing maintenance of the overhead line (including vegetation management on a five year rotation). A nest-tube survey was undertaken by RSK between April and October 2014. Survey equipment, comprising 571 nest-tubes, was placed in 13 areas of suitable Dormouse habitat along the proposed route. Dormice were recorded at one of these locations (Site 1). The survey methods and results for the surveys along the Proposed Development are described. This report assesses the impacts of the Proposed Development and outlines a strategy to minimise or eliminate the impacts. No works likely to affect Dormice will be carried out until a European Protected Species licence has been obtained. On receipt of the licence, a mitigation strategy will be applied as outlined in this method statement. Western Power Distribution i Brechfa Forest Connection – EPS Licence Application – Dormice Method Statement 855587 CONTENTS A. EXECUTIVE SUMMARY ................................................................................................................... I B. INTRODUCTION .............................................................................................................................. 1 B.1 Background to activity/development ......................................................................................... 1 B.2 Full details of proposed works on site that are to be covered by the licence ........................... 1 B.3 Actions requiring licensing ........................................................................................................ 1 C. SURVEY AND SITE ASSESSMENT ............................................................................................... 2 C.1 Existing information on the dormice at the survey site ............................................................. 2 C.2 Statutory sites notified for the species (SSSIs) within 10km .................................................... 2 C.3 Objectives of any specific survey ............................................................................................. 2 C.4 Scaled plan/map of survey area ............................................................................................... 3 C.5 Site/habitat description ............................................................................................................. 6 C.6 Field survey(s) .......................................................................................................................... 7 C.6.1 Survey methods ............................................................................................................ 7 C.6.2 Weather ........................................................................................................................ 8 C.6.3 Timing ........................................................................................................................... 8 C.6.4 Constraints ................................................................................................................... 9 C.7 Survey results ........................................................................................................................... 9 C.8 Interpretation/evaluation of survey results ............................................................................... 9 D. IMPACT ASSESSMENT ................................................................................................................ 10 D.1 Short-term impacts: disturbance ............................................................................................ 10 D.2 Long-term impacts: habitat modification ................................................................................ 10 D.3 Long term impacts: habitat loss .............................................................................................. 10 D.4 Long term impacts: fragmentation and isolation .................................................................... 10 D.5 Post-development impacts ..................................................................................................... 10 D.6 Predicted scale of impact ....................................................................................................... 11 E. MITIGATION, COMPENSATION AND MONITORING .................................................................. 12 E.1 Site clearance methods .......................................................................................................... 12 E.2 Dormice habitat ...................................................................................................................... 12 E.2.1 In-situ retention of habitat ........................................................................................... 12 E.2.2 Modification of existing habitat ................................................................................... 12 E.2.3 New habitat creation ................................................................................................... 12 E.2.4 Habitat losses and gain summary table ..................................................................... 12 E.3 Mechanisms for ensuring delivery of mitigation and compensation measures ...................... 13 E.4 Mitigation contingencies ......................................................................................................... 13 E.5 Bio-security risk assessment .................................................................................................. 13 F. POST-DEVELOPMENT SITE SAFEGUARD ................................................................................ 14 F.1 Habitat / site management and maintenance ......................................................................... 14 F.2 Population monitoring and habitat monitoring ........................................................................ 14 F.3 Post-development mitigation contingencies ........................................................................... 14 G. TIMETABLE OF WORKS .............................................................................................................. 15 H. LAND OWNERSHIP ....................................................................................................................... 16 H.1 Mitigation site/compensation site ownership .......................................................................... 16 H.2 Mitigation site/compensation ownership post construction .................................................... 16 Western Power Distribution ii Brechfa Forest Connection – EPS Licence Application – Dormice Method Statement 855587 I. REFERENCES ............................................................................................................................... 17 TABLES C-1 Dormouse tube survey area locations .............................................................................................. 6 C-2 Dormouse survey site scores ........................................................................................................... 7 C-3 Survey timings .................................................................................................................................