Wylfa Newydd Project A5025 On-Line Highway Improvements
Total Page:16
File Type:pdf, Size:1020Kb
ENERGY WORKING FOR BRITAIN FOR WORKING ENERGY Wylfa Newydd Project A5025 On-line Highway Improvements Environmental Report – Volume 3A Appendices APPLICATION November 2017 Wylfa Newydd Project Environmental Report Volume 3A - Appendices A5025 On-line Highway Improvements List of Appendices Appendix 2.1 A5025 Temporary Construction Compound Optioneering Exercise Appendix 3.1 Summary of Assessment Scope Appendix 3.2 Consultation summary Appendix 8.1 Baseline Noise Monitoring Plan Appendix 11.1 A5025 Freshwater Baseline Surveys 2014-2015 Appendix 11.2 A5025 On-line and Off-line Highway Improvements Terrestrial Ecology Factual Report 2014-2015 Appendix 11.3 Preliminary Ecological Appraisal May 2014 © Horizon Nuclear Power Wylfa Limited Page i Environmental Report Volume 3A - Appendices Wylfa Newydd Project A5025 On-line Highway Improvements [This page is intentionally blank] © Horizon Nuclear Power Wylfa Limited Page ii A5025 On-line Highway Improvements Environmental Report Volume 3 – Appendix 11.1 A5025 Freshwater Baseline Surveys 2014-2015 © Horizon Nuclear Power Wylfa Limited Environmental Report Volume 3 – Appendix 11.1 Wylfa Newydd Project A5025 On-line Highway Improvements [This page is intentionally blank] © Horizon Nuclear Power Wylfa Limited Wylfa Newydd Project Horizon Nuclear Power Ltd A5025 Freshwater Baseline Surveys 2014-2015 60PO8008/AQE/REP/001 | R3 Revision Date WN03.01.01-S5-PAC-REP-00018 A5025 Freshwater Baseli ne Sur veys 2014-2015 Horizon N uclear Power Ltd Document history and status Revision Date Description By Review Approved 1 30/01/2015 2014 Freshwater baseline surveys Dr Niamh Burke Gillian McCoy Rob Bromley 2015 data added, proof read comments 2 06/09/2015 Alice Shoebridge Jon Barnes Rob Bromley addressed, discipline review 3 13/04/2017 Updating consultation data Seán McGrogan Jon Barnes Distribution of copies Revision Issue Date issued Issued to Comments approved A5025 Freshwater Baseline Surveys 2014-2015 Wylfa Newydd Project Project no: 60PO8033 Document title: A5025 Freshwater Baseline Surveys 2014-2015 Document No.: 60PO8008/AQE/REP/001 Revision: R3 Date: April 2017 Client name: Horizon Nuclear Power Ltd Client no: Project manager: Rob Bromley Author: Niamh Burke Jacobs U.K. Limited Kenneth Dibben House Enterprise Road,Southampton Science Park Chilworth, Southampton SO16 7NS United Kingdom T +44 (0)23 8011 1250 F +44 (0)23 8011 1251 www.jacobs.com © Copyright 2016 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. i A5025 Freshwater Baseline Surveys 2014-2015 Contents Executive summary ............................................................................................................................................... 1 1. Introduction ................................................................................................................................................ 3 1.1 Overview ...................................................................................................................................................... 3 1.2 Study area context ....................................................................................................................................... 3 1.3 Study aims and objectives ........................................................................................................................... 3 1.4 Previous work .............................................................................................................................................. 4 2. Methodology ............................................................................................................................................ 11 2.1 Approach ................................................................................................................................................... 11 2.2 Desk study ................................................................................................................................................. 11 2.3 Field surveys ............................................................................................................................................. 11 2.3.1 Habitat characterisations ........................................................................................................................... 11 2.3.2 Phytobenthos (diatoms)............................................................................................................................. 12 2.3.3 Water quality .............................................................................................................................................. 13 2.3.4 Macroinvertebrates .................................................................................................................................... 13 2.3.5 Macrophytes .............................................................................................................................................. 14 2.3.6 Fish ............................................................................................................................................................ 15 2.3.7 Pond habitat assessment .......................................................................................................................... 16 2.4 Incidental sightings of non-natives ............................................................................................................ 17 2.5 Limitations ................................................................................................................................................. 17 2.5.1 Seasonal variations ................................................................................................................................... 17 2.5.2 Access ....................................................................................................................................................... 17 3. Results ...................................................................................................................................................... 18 3.1 Desk study ................................................................................................................................................. 18 3.2 Habitat characterisation ............................................................................................................................. 18 3.3 Phytobenthos (diatoms)............................................................................................................................. 19 3.3.1 Summary ................................................................................................................................................... 21 3.4 Water quality .............................................................................................................................................. 21 3.4.1 Temperature .............................................................................................................................................. 21 3.4.2 Conductivity ............................................................................................................................................... 21 3.4.3 Dissolved oxygen ...................................................................................................................................... 21 3.4.4 pH .............................................................................................................................................................. 22 3.5 Water quality laboratory results ................................................................................................................. 22 3.5.1 Biological oxygen demand ........................................................................................................................ 22 3.5.2 Suspended solids ...................................................................................................................................... 22 3.5.3 Nutrients .................................................................................................................................................... 22 3.5.4 Metals ........................................................................................................................................................ 22 3.5.5 Phenols ...................................................................................................................................................... 23 3.5.6 Polycyclic aromatic hydrocarbons ............................................................................................................. 23 3.5.7 Volatile organic compounds and others .................................................................................................... 23 3.5.8 Summary ................................................................................................................................................... 23 ii A5025 Freshwater Baseline Surveys