132Kv Overhead Line Between Legacy and Oswestry
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PROPOSED REINFORCEMENT TO THE ELECTRICAL DISTRIBUTION SYSTEM 132kV OverheadLine Between Legacy and Oswestry Consultation Document February 2007 PROPOSED REINFORCEMENT TO THE ELECTRICAL DISTRIBUTION SYSTEM 132kV Overhead Line Between Legacy and Oswestry Consultation Document Report Reference TEP 700.054 Rev. F © Copyright Scottish Power UK plc Published by: Scottish Power UK plc 1 Atlantic Quay Glasgow G2 8SP February 2007 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying or otherwise without prior written permission of the publisher. Produced for SP Manweb plc (a Scottish Power Company) by TEP, Environmental Consultants. SP Manweb plc, Registered Office, 3 Prenton Way, Prenton, Merseyside, CH43 3ET. Registered in England and Wales No 2366937. 1.0 INTRODUCTION ................................................................................................. 1 Purpose of the Project................................................................................................ 1 The Consultation Document........................................................................................ 1 Statutory Consents Procedure..................................................................................... 3 2.0 PROJECT DESCRIPTION...................................................................................... 4 Project Context......................................................................................................... 4 Overhead Line Design ................................................................................................ 6 Construction and Technical Issues............................................................................... 9 3.0 APPROACH AND METHOD.................................................................................13 The Approach to Route Selection ...............................................................................13 4.0 STUDY AREA INVENTORY .................................................................................21 Study Area..............................................................................................................21 Settlements and Infrastructure ...................................................................................21 Planning Context and Development Proposals ..............................................................22 Development Land Allocations ...................................................................................24 Safeguarded Areas ...................................................................................................25 Topography and Woodlands ......................................................................................25 Agriculture ..............................................................................................................26 Landscape Character ................................................................................................27 Landscape Designations ............................................................................................29 Nature Conservation .................................................................................................34 Archaeology and Cultural Heritage..............................................................................38 Recreation And Tourism ............................................................................................41 Mineral Resources ....................................................................................................43 Landfill and Land Reclamation....................................................................................44 5.0 BROAD ROUTE OPTIONS ...................................................................................45 Strategic Environmental Considerations.......................................................................45 Route comparisons ...................................................................................................47 Summary of Broad Route Options...............................................................................53 Identification of Preferred Broad Route Option..............................................................53 Table 5.1: Summary Table of Broad Route Options.......................................................54 6.0 DETAILED ROUTE OPTIONS ...............................................................................55 Zoning of the Study Area ..........................................................................................55 Environmental and Technical Considerations ................................................................55 Identification of the Preferred Route............................................................................56 Route Descriptions and Comparison............................................................................56 Zone A (Legacy) Route Options..................................................................................56 Comparison of Zone A (Legacy) Options: A1, A2 and A3 ..............................................59 Zone B (Dee River Crossing) Route Options .................................................................60 Comparison of Zone B (Dee River Crossing) Options .....................................................65 Zone C (Oswestry) Route Options ..............................................................................68 Comparison of Zone C (Oswestry) Options ..................................................................70 Comparison of Western and Eastern Routeing Strategies ...............................................73 Conclusion ..............................................................................................................74 7.0 THE PREFERRED ROUTE ....................................................................................75 Route From Legacy (Zone A) .....................................................................................75 River Dee Crossing (Zone B) ......................................................................................75 Approach to Oswestry Substation (Zone C) .................................................................76 8.0 FUTURE WORKS ...............................................................................................77 9.0 THE NEXT STEPS..............................................................................................78 Consultation ............................................................................................................78 Confirmation of the Proposed Route ...........................................................................78 Environmental Impact Assessment .............................................................................78 Application for Consent.............................................................................................79 Construction of the New Connection ..........................................................................79 Appendices Appendix 1A: Consultees Appendix 1B: Glossary Appendix 1C: References and sources of information Appendix 4A: Summary of Planning Policies Appendix 4B: Landscape Character Areas Appendix 4C: Scheduled Monuments List Appendix 6A: Environmental and Technical Constraints to Detailed Routeing Appendix 6B: Summary Table of Key Environmental Factors Relating to Detailed Route Options Appendix 6C: Comparison of Route B1 Sub-options around Wynnstay Park Appendix 6D: Comparison of Route B3 Sub-options for crossing the River Dee Appendix 6E: Comparison of Route C1 Sub-options in the River Perry Valley Figures Figure 2.1: Regional Context (D700.072 Rev C) Figure 2.2: Existing Electrical System (D700.041 Rev C) Figure 2.3: Comparison of Support Types (D700.008 Rev E) Figure 2.4: Proposed Wood Pole Types (D700.053 Rev E) Figure 3.1: The Route Selection Process (D700.052 Rev D) Figure 4.1: Study Area (D700.040 Rev B) Figure 4.2: Settlements and Infrastructure (D700.032 Rev B) Figure 4.3: Development Allocations and Consultation Zones (D700.031Rev D) Figure 4.4: Topography and Woodland (D700.036 Rev C) Figure 4.5: Agricultural Land Classification (D700.0.46 Rev C) Figure 4.6: Landscape Character Areas (D700.033 Rev C) Figure 4.7: Landscape Character Photographs (D700.045 Rev C) Figure 4.8: Landscape Designations (D700.039 Rev D) Figure 4.9: Nature Conservation (D700.034 Rev D) Figure 4.10: Cultural Heritage (D700.037 Rev D) Figure 4.11: Recreation and Tourism (D700.038 Rev C) Figure 4.12: Mineral Resources (D700.042 Rev D) Figure 5.1: Broad Route Options (D700.035 Rev C) Figure 6.1: Detailed Route Options (D700.050 Rev E) Figure 6.2: Detailed Route Options with Environmental Constraints (D700.044 Rev G) Figure 6.3: Zone A (Legacy) Options with constraints (D700.047 Rev E) Figure 6.4 Zone B (River Dee) with constraints (D700.048 Rev E) Figure 6.5: Zone C (Oswestry) Options with constraints (D700.049 Rev E) Figure 7.1: Preferred Route (D700.051 Rev D) Figure 8.1: Future Connection to Chirk (D700.063 bw Rev B) Legacy – Oswestry Reinforcement Consultation Document 1.0 INTRODUCTION Purpose of the Project 1.1 SP Manweb has a statutory duty and a licence obligation to develop and maintain an efficient, co-ordinated and economical system of electricity supply to its customers. To meet these requirements, SP Manweb proposes to reinforce the 132kV distribution system between Legacy substation and