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Horizon Nuclear Power (Wylfa) Ltd ENERGY WORKING FOR BRITAIN FOR WORKING ENERGY Wylfa Newydd Project 6.4.41 ES Volume D - WNDA Development App D9-8 - National Vegetation Classification Technical Summary Report PINS Reference Number: EN010007 Application Reference Number: 6.4.41 June 2018 Revision 1.0 Regulation Number: 5(2)(a) Planning Act 2008 Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009 Horizon Internal DCRM Number: WN0902-JAC-PAC-APP-00143 [This page is intentionally blank] Wylfa Newydd Horizon Nuclear Power (Wylfa) Ltd Technical Summary Report - National Vegetation Classification 60PO8032/TER/REP-001 | 1 WN034-JAC-PAC-REP-00003 Document history and status Revision Date Description By Review Approved NVC Technical Summary Laura Gore Dave Jones 1 16/12/15 Minor edits following proof read Suzanne Jenkins Jonathan Jackson Rob Bromley Distribution of copies Revision Issue Date issued Issued to Comments approved Technical Summary Report - National Vegetation Classification Wylfa Newydd Project no: 60PO8032 Document title: Technical Summary Report - National Vegetation Classification Document No.: 60PO8032/TER/REP-001 Revision: 1 Date: December 2015 Client name: Horizon Nuclear Power (Wylfa) Ltd Client no: WN034-JAC-PAC-REP-00003 Project manager: Robert Bromley Author: Laura Gore File name: \\SOUFIL01\Projects\$PROJECTS\$B1496000 Wylfa Marine Services\6. Reports\Jacobs 2015 Technical Summary Reports\60PO8032 Wylfa NVC Summary Report 2015 LG JJ DM dj check_after proof read.docx Jacobs U.K. Limited Churchill House Churchill Way Cardiff, CF10 2HH United Kingdom T +44 (0)29 2035 4200 F +44 (0)29 2035 3222 www.jacobs.com © Copyright 2015 Jacobs U.K. Limited. The concepts and information contained in this document are the property of Jacobs. Use or copying of this document in whole or in part without the written permission of Jacobs constitutes an infringement of copyright. Limitation: This report has been prepared on behalf of, and for the exclusive use of Jacobs’ Client, and is subject to, and issued in accordance with, the provisions of the contract between Jacobs and the Client. Jacobs accepts no liability or responsibility whatsoever for, or in respect of, any use of, or reliance upon, this report by any third party. 60PO8032/TER/REP-001 i Technical Summary Report - National Vegetation Classification Contents Executive Summary ............................................................................................................................................... 1 1. Introduction ................................................................................................................................................ 3 1.1 Overview ...................................................................................................................................................... 3 1.2 Wylfa Newydd Project ................................................................................................................................. 3 1.3 Site Description ........................................................................................................................................... 3 1.4 Aims and Objectives .................................................................................................................................... 4 1.5 Summary of Work to Date ........................................................................................................................... 4 1.6 Legal Status ................................................................................................................................................. 5 2. Methodology .............................................................................................................................................. 8 2.1 Desk Study .................................................................................................................................................. 8 2.2 Field Survey ................................................................................................................................................. 8 2.2.1 National Vegetation Classification (NVC) .................................................................................................... 8 2.2.2 DAFOR survey ............................................................................................................................................ 8 2.2.3 Perennial vegetation of stony banks ........................................................................................................... 9 2.2.4 Uncommon plant species ............................................................................................................................ 9 2.2.5 Terminology and identification references .................................................................................................. 9 2.2.6 Data analysis and TABLEFIT ...................................................................................................................... 9 2.2.7 Interpretation of results ................................................................................................................................ 9 2.3 Limitations ................................................................................................................................................... 9 3. Results ...................................................................................................................................................... 11 3.1 Desk Study ................................................................................................................................................ 11 3.2 Field Survey ............................................................................................................................................... 13 3.2.1 Site 1 – South-west of Magnox Visitor Centre (from Arup, 2010) ............................................................. 13 3.2.2 Site 2 – South of Porth-y- pistyll (from Arup, 2010) ................................................................................... 15 3.2.3 Site 3 – Wylfa Head South (from Arup, 2010) ........................................................................................... 15 3.2.4 Site 4 – East of Porth-y-Wylfa (from Arup, 2010) ...................................................................................... 17 3.2.5 Site 5 – South-west of Existing Power Station (from Arup, 2010) ............................................................. 17 3.2.6 Site 6 – Trwyn Pencarreg and Felin Gafnan (from Arup, 2012) ................................................................ 19 3.2.7 Site 7 – Wylfa Head, Ty-Croes, north of Tre’r Gof SSSI and Porth-y-wylfa to Penrhyn (from Arup, 2012) ......................................................................................................................................................... 21 3.2.8 Site 8 – Tre’r Gof SSSI (from Jacobs, 2013b) ........................................................................................... 24 3.2.9 Site 9 – Cae Gwyn SSSI (from Jacobs, 2013b) ........................................................................................ 24 3.2.10 Site 10 – Wylfa Head West (from Jacobs, 2013b) .................................................................................... 25 3.2.11 Site 11 – Trwyn Pencarreg (from Arup, 2013) .......................................................................................... 26 3.2.12 Site 12 – Mynydd Ithel (from Jacobs, 2014) .............................................................................................. 26 3.2.13 Site 13 – Groes-fechan heathland (from Jacobs, 2014) ........................................................................... 28 3.2.14 Sites 14 to 23 (from Jacobs, 2015) ........................................................................................................... 30 3.2.15 Wylfa Head East ........................................................................................................................................ 32 3.2.16 Uncommon plant species .......................................................................................................................... 35 60PO8032/TER/REP-001 ii Technical Summary Report - National Vegetation Classification 4. Discussion ............................................................................................................................................... 38 4.1 Notable Species ........................................................................................................................................ 38 4.2 Habitats of Conservation Interest .............................................................................................................. 40 4.2.1 Lowland grassland ..................................................................................................................................... 40 4.2.2 Lowland heath ........................................................................................................................................... 40 4.2.3 Lowland fens ............................................................................................................................................. 41 4.2.4 Purple moor grass and rush pastures ....................................................................................................... 41 4.2.5 Wet woodland ...........................................................................................................................................
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