Site Reference Client Name Shotton Power Station for: GDF Suez Shotton Limited CRM.022.004.R.001A Shotton Power Station – Restoration Scheme GDF Suez Shotton Ltd. Contact Details: Enzygo Ltd. tel:01454 269237 The Granary fax:01454269760 Woodend Lane email:[email protected] Cromhall web:www.enzygo.com Gloucestershire GL12 8AA Revised Restoration Scheme Project: Shotton Power Station For: GDF Suez Shotton Limited Status: Final Date: November 2013 Author: Tom Bland, Principal Consultant Reviewer: Kevin Parr, Director Disclaimer: This report has been produced by Enzygo Limited within the terms of the contract with the client and taking account of the resources devoted to it by agreement with the client. We disclaim any responsibility to the client and others in respect of any matters outside the scope of the above. This report is confidential to the client and we accept no responsibility of whatsoever nature to third parties to whom this report, or any part thereof, is made known. Any such party relies on the report at their own risk. Enzygo Limited Registered in England No. 6525159 Registered Office Stag House Chipping Wotton-Under-Edge Gloucestershire GL12 7AD Contents 1.0 INTRODUCTION ....................................................................................................... 2 2.0 BACKGROUND ......................................................................................................... 3 3.0 RESTORATION SCHEME........................................................................................... 4 4.0 SUMMARY ............................................................................................................... 9 5.0 DRAWINGS 6.0 APPENDICES CRM.022.004.R.001 Page 1 November 2013 1.0 INTRODUCTION 1.1. Introduction 1.1.1. Enzygo Limited (Enzygo) has been commissioned by GDF Suez Shotton Limited to prepare a Restoration Scheme for the land at Shotton Power Station, Deeside, Flintshire. The scheme is required by Condition 50 of the deemed planning permission for the facility. 1.2. The Site 1.2.1. The subject site comprises 5 hectares of land off Weighbridge Road, Deeside Industrial Estate, Deeside. The land is part of a former steelworks site which has subsequently been redeveloped. 1.2.2. The land is generally flat and currently contains the buildings, plant and infrastructure of the power station. In addition, the site contains internal roads and kerbs, car parking and a dedicated surface water management system. The site is fully enclosed with security fencing. 1.3. The Station 1.3.1. Shotton Power Station is a 210 megawatt (MW) gas-fired Combined Heat and Power (CHP) generating station. 1.3.2. The station was constructed in 2001 primarily to supply heat to the adjacent UPM Paper Mill. The station ceased generating power in June 2012. 1.3.3. The station operated under a deemed planning permission issued on 3 December 1998 by the Secretary of State for Trade and Industry in accordance with Section 36 of the Electricity Act 1989 and Section 90 of the Town and Country Planning Act 1990. A copy of the deemed planning permission is at Appendix 1 to this report. 1.4. Purpose of this Document 1.4.1. This document is intended to satisfy Condition 50 (Cessation of Works and Restoration of the Site) of the deemed planning permission for the site. Condition 50 states: Within 18 months of the Site ceasing to be used for the purpose of electricity generation, the Company shall restore the site to a condition satisfactory to the Council, unless by the expiry of that period a planning permission or application for an alternative use for the Site has been obtained or sought or otherwise approved in writing by the Council. Such restoration work shall be undertaken in accordance with a detailed scheme submitted to, and approved in writing by, and deposited with, the Council. Reason: To ensure that the site is not allowed to become derelict after the cessation of electricity generation. 1.4.2. By agreement with Flintshire County Council, the term ‘the Council’ in the above condition is interpreted as meaning the Local Planning Authority (LPA). Therefore the Restoration Scheme is to be submitted to and approved in writing by the LPA. 1.4.3. In accordance with the stated reason for Condition 50, the primary purpose of the Restoration Scheme proposed by this document is to ensure the site does not become derelict now that electricity generation at the site has ceased. 1.4.4. By agreement with the LPA (letter dated 10 October 2013 appended to this Statement) the site must be fully restored in accordance with an approved scheme no later than 30 June 2015. CRM.022.004.R.001 Page 2 November 2013 2.0 BACKGROUND 2.1. Introduction 2.1.1. The GDF Suez Shotton Limited CHP Site is one of 9 sites in the UK operated by GDF Suez Energy International. The Site is located in Flintshire, North Wales on the Shotton Industrial Estate. 2.1.2. The Site comprises two gas turbines, each with a dedicated heat recovery steam generator which produces steam into a common pipework system capable of supplying a single steam turbine and process steam offsite. The plant has a dual fired capability. The primary fuel source is supplied natural gas with distillate available as an emergency backup fuel. The plant has a combined electrical capacity of 210MW power and is embedded into the 132kV grid system. 2.1.3. The existing layout of the site is shown on Figure 1 ‘Site Boundary’ in Section 5 of this report. 2.2. Access 2.2.1. Access to the Site is from A548 onto Weighbridge Road. 2.3. Station History 2.3.1. The Site was originally built by Eastern Electricity/TXU Europe and commenced commercial operation in 2001, operating as Shotton Combined Heat and Power Ltd. The plant is located near to the site of UPM's paper mill in Shotton and supplied process steam to the paper mill until June 2012. 2.3.2. In December 2002, TXU went into administration, and in January 2003, the administrators, PricewaterhouseCoopers successfully restarted the power plant. In October 2003, the plant was bought by Gaz de France (GDF). In 2008 Gaz de France merged with Suez (a major global utility company) to form GDF Suez. 2.3.3. In 2011 International Power and GDF Suez merged and Shotton CHP was integrated into International Power’s UK portfolio. Due to market conditions the station was no longer competitive in the UK market and International Power GDF Suez decided to close the station. International Power GDF Suez has rebranded and is now known as GDF Suez Energy International. 2.3.4. The CHP site is leased by GDF Suez Shotton Limited from Flintshire County Council, who are landowner and landlord. 2.3.5. The site was an operational power station until June 2012 and, having been built just over 10 years ago, is considered to be in good general condition. CRM.022.004.R.001 Page 3 November 2013 3.0 RESTORATION SCHEME 3.1. General 3.1.1. The general procedure envisaged for the restoration of the site in accordance with Condition 50 and in line with the landlord’s requirements will follow the steps outlined below: Dismantling of all plant and equipment for re-use elsewhere; Demolition and crushing of infrastructure not proposed for re-use (concrete pads, roads, kerbs, sumps etc.); Removal of underground services; Removal of all pile foundations to a depth of 2m below existing ground level; Backfilling of the site with crushed demolition material from the site or other suitable material; and Grading of the site to an approved level. 3.1.2. These proposed steps are detailed further in the sections below. 3.2. Dismantling plant and equipment 3.2.1. The CHP plant itself is to be dismantled for removal from site and reassembled overseas to continue operation as a generating station. The items to be removed from the site for this purpose include, but are not limited to: Gas turbines including generators and transformers; Steam turbine including generators and transformers; Heat recovery steam generators (boilers) including chimney stack; Water treatment plant; Control and electrical switchgear; Air cooled condenser; and Fuel reception facilities and pumping equipment. 3.2.2. All plant to be dismantled for export will be removed from the site prior to the commencement of demolition, crushing and restoration of the land. 3.3. Demolition of concrete slabs, roads, kerbs and sumps 3.3.1. Following the removal of all plant and equipment in accordance with Section 3.2 above, all surface concrete slabs, sump bases, roads, kerbs, rubble and tarmac will be broken out and crushed on site. The only exceptions to this are entrance tarmac road and tarmac car park at the top of the entrance road. These will be retained. 3.3.2. All buildings will be removed and demolished. 3.3.3. The following is an indicative list of plant and equipment expected to be used in the crushing, grading and screening of demolition material and other demolition works on site: 2 x Hitachi 470 Excavators 1 x Hitachi 210 Excavator CRM.022.004.R.001 Page 4 November 2013 Machine Attachments Extec Crusher 1 x magnet 1 x Access Platform 2 x Shears 4 sets Oxy/Propane cutting equipment. 3 x buckets 1 x 40 cu yd skips 1 used for 2 x hydraulic breakers metals, 1 used for general CAT 226 Skid Steer waste. 3.3.4. The use of mobile crushing plant to process demolition material on site will be undertaken in accordance with the requirements of the Environmental Health Services department and will be controlled via a Part B permit (Section 3.5) issued under The Environmental Permitting Regulations (England and Wales) 2010. Suitable noise mitigation measures, in the form of a barrier or other equipment will be used to minimise the impact of the noise produced by the operation of the machine to acceptable limits at the site boundary.