Excavated Material and Waste Management Strategy Overview Of
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Excavated Material and Waste Management Strategy Overview of Strategy Volume 1 of 3 February 2005 This document has been prepared for the titled project or named part thereof and shouldnot be relied upon or used for any other project without an independent check being carried out as to its suitability and prior written authority of Mott MacDonald being obtained. Mott MacDonald accepts no responsibility or liability for the consequences of this document being used for a purpose other than the purposes for which it was commissioned. Any person using or relying on the document for such other purpose agrees, and will by such use or reliance be taken to confirm his agreement to indemnify Mott MacDonald for all loss or damage resulting thereof. Mott MacDonald accepts no responsibility or liability for this document to any party other than the person by whom it was commissioned. Excavated Material and Waste Management Strategy Mott MacDonald Overview of Strategy 18 February 2005 List of Contents Page Sections and Appendices 1 INTRODUCTION 1 1.1 Background 1 1.2 Summary Scheme Description 1 1.3 Route Definitions 1 1.4 Technical Report Format 2 1.5 Excavated Materials and Waste Management Strategy 3 2 CATEGORIES OF SURPLUS MATERIAL 4 2.1 Material Types 4 2.2 Demolition Material (estimated volume 0.3 million m3) 4 2.3 Excavated Material (estimated volume 6.0 million m3) 4 2.3.1 Clean Excavated Material 4 (i) Subsurface works: 5 (ii) Surface works: 5 2.3.2 Contaminated excavated material (estimated volume 0.5 million m3) 5 2.4 Construction Material (estimated volume 1.2 million m3) 6 2.4.1 Sprayed Concrete Lining Material 6 2.4.2 Other construction wastes: 6 3 THE WASTE HIERARCHY AND STRATEGY 7 3.1 Waste Hierarchy 7 3.2 Beneficial Re-use Options 7 3.2.1 Recycling of demolition wastes 7 3.2.2 Excavated Material 8 3.2.3 Contaminated Material 8 (i) Containment 9 (ii) Remediation 9 (iii) Direct Disposal to Landfill 10 (iv) Actions to Achieve Solutions 10 3.2.4 Construction Wastes 11 3.2.5 Sprayed Concrete Lining Residues 11 4 LOADING AND TRANSPORTATION OF SURPLUS MATERIAL 12 4.1 Modes of Transportation 12 4.2 Rail 12 4.2.1 Train Loading Sites 12 (i) Paddington New Yard Sidings (Royal Oak Sidings) 13 (ii) Mile End (Devonshire Street) Sidings 13 (iii) Bow Midland Yard East Sidings 13 4.2.2 Notional Train Plan 13 4.3 Water 13 4.3.1 Barge Loading Sites 13 (i) Isle of Dogs barge loading facility: 14 (ii) Limmo Peninsula barge loading facility: 14 (iii) Manor Wharf barge loading facility: 15 4.4 Road 15 5 LANDFILL SITE SELECTION 16 6 SURPLUS MATERIALS SUMMARY ANALYSIS 18 i Excavated Material and Waste Management Strategy Mott MacDonald Overview of Strategy 18 February 2005 1 INTRODUCTION 1.1 Background Crossrail is a major new cross-London rail link project that has been developed to serve London and the south-east of England. Crossrail will support and maintain the status of London as a world city by providing a world class transport system. The project includes the construction of a twin-bore tunnel on an east-west alignment under central London and the upgrading of existing National Rail lines to the east and west of central London. The Crossrail route is shown in Figure 1 below. Figure 1: Crossrail route map: Transport for London 1.2 Summary Scheme Description The project will enable the introduction of a range of new and improved rail journeys into and through London. It includes the construction of seven central area stations, providing interchange with London Underground, National Rail and London bus services, and the upgrading or renewal of existing stations outside central London. Crossrail will provide fast, efficient and convenient rail access to the West End and the City by linking existing routes from Shenfield and Abbey Wood in the east with Maidenhead and Heathrow in the west. Crossrail will be a significant addition to the transport infrastructure of London and the south-east of England. It will deliver improved services for rail users through the relief of crowding, faster journeys and the provision of a range of new direct journey opportunities. The project will also have wider social and economic benefits for London and the south-east of England. 1.3 Route Definitions Crossrail's route has four distinct sections: a central section within central London and, outside central London, western, north-eastern and south-eastern sections. 1 Excavated Material and Waste Management Strategy Mott MacDonald Overview of Strategy 18 February 2005 In the west, Crossrail will use the Great Western Main Line (GWML) between Maidenhead and Westbourne Park. The existing 25 kV overhead electrification between Paddington and Airport Junction will be extended to Maidenhead and bridge alterations will be undertaken as necessary. The main infrastructure changes are the construction of a flyover structure (the Stockley flyover) to allow Crossrail trains to access the existing tunnelled spur to Heathrow and the provision of a rail underpass (a dive-under) west of Acton Yard. A new line, within the existing railway corridor, will be provided between Langley and West Drayton. Enhancements will also be made to stations, with the most significant works being at Ealing Broadway, Southall, Hayes and Harlington, West Drayton, Slough and Maidenhead. New stabling sidings are also proposed at Old Oak Common, West Drayton and west of Maidenhead station. The central route section will consist largely of a twin-bore tunnel beneath central London with portals at Royal Oak in the west, Pudding Mill Lane in the north-east and Victoria Dock Road in the south- east. The central route section extends from a point around 200 m west of the A40 Westway to a point around 500 m to the east of the portal at Pudding Mill Lane in the north-east and a point just to the east of Poplar Dock and the A1206 Prestons Road in the Isle of Dogs in the southeast. New stations and associated structures, such as ventilation shafts, will be provided along this part of the route. On the north-east route section, Crossrail will use the existing Great Eastern Main Line (GEML) between Pudding Mill Lane and Shenfield. The main infrastructure changes are a new train maintenance depot west of Romford station and the reinstatement of a track between Goodmayes and Chadwell Heath. Enhancements will also be made to stations, with the most significant works being proposed at Ilford and Romford. This route has existing 25kV overhead electrification. New stabling facilities will be provided at Gidea Park. The south-east route section runs between a point to the east of the Isle of Dogs station and the eastern terminus at Abbey Wood, where Crossrail will serve a reconstructed station. Crossrail will operate in a twin-bore tunnel to Victoria Dock portal where it will serve a reconstructed station at Custom House. The route will then follow the existing alignment currently used by the North London Line (NKL) through the Connaught Tunnel to Silvertown. At North Woolwich, a new twin-bore tunnel to Plumstead, referred to as the Thames Tunnel, will pass beneath the River Thames. Two new tracks will be provided between Plumstead and a point east of Abbey Wood station to accommodate Crossrail services on the NKL corridor. This route will be provided with 25kV overhead electrification on the Crossrail lines. 1.4 Technical Report Format This technical report provides the specialist information on the excavated materials and waste management strategy for the Crossrail EIA. It has been prepared jointly by Mott MacDonald and Adams Hendry. The responsibilities of the consultants and the report structure are set out as follows: Volume 1 Excavated Material and Waste Management Strategy Mott MacDonald Volume 2 Best Practicable Environmental Option Adams Hendry Volume 3 Appraisal of Landfill Sites Adams Hendry This is Volume 1 that sets out the strategy and contains details of the technical aspects of the generation of material, loading, transport and treatment or disposal of the materials and the processes taken during the selection of disposal sites (landfill sites). Volume 2 covers the Best Practicable Environmental Option as applied to the strategy. Volume 3 provides details of the landfill sites and respective planning policies. 2 Excavated Material and Waste Management Strategy Mott MacDonald Overview of Strategy 18 February 2005 1.5 Excavated Materials and Waste Management Strategy During the period of the construction of the Crossrail project, surplus material will be generated in the categories and estimated volumes shown below: Surplus Material Type Estimated Volume (million m3) Demolition material 0.3 ‘Clean’ excavated material 6.0 Contaminated excavated material 0.5 Construction material including sprayed concrete lining residues 1.2 Total 8.0 The estimated volumes have been calculated by multiplying the in situ volume of material by a conversion factor to estimate the volume of material in bulk to be transported to the disposal sites. Material Type Conversion Factor (million m3 in situ to million m3 bulked) Demolition material 1.5 ‘Clean’ excavated material: Subsurface section 1.8 Surface sections 1.5 Contaminated excavated material 1.8 Construction material including sprayed concrete lining residues 1.8 A breakdown of the allocation of the clean excavated material and sprayed concrete lining material to disposal sites by mode of transport is provided in Section 6. An excavated materials and waste management strategy has been drawn up to identify the surplus material types and the means of transport and final treatment or disposal. The strategy covers the disposal of surplus material at landfill disposal sites, although Crossrail will apply the principles of the waste management hierarchy to achieve beneficial re-use of materials where feasible.