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  • 8.66 Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    T010021

    January 2017

  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    THIS PAGE HAS INTENTIONALLY BEEN LEFT BLANK

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and

    Treatment Plant: Environmental Appraisal

    Document Reference: XXXXXXXX-XXX-XXX-XX-XX-XX-XXXX

    Author: Transport for London

    Rev. Date Approved By Signature Description

    0 27/01/2016 David Rowe (TfL Lead Sponsor)

    For Deadline 3

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    Contents List of Abbreviations ................................................................................................ 6

    Glossary of Terms .................................................................................................... 8

    1. INTRODUCTION ......................................................................................... 13

    1.1 Introduction ................................................................................................. 13

    1.2 TBM Selection Process ............................................................................... 14

    2. Detailed Description of the Slurry TBM Methodology ............................ 15

    2.1 Slurry TBM Principles .................................................................................. 15

    2.2 Underground Operations ............................................................................. 15

    2.3 Above Ground Operations .......................................................................... 15

    2.4 Slurry Treatment Plant Processes ............................................................... 19

    2.5 Slurry Treatment Plant Layout ..................................................................... 20

    2.6 Construction, Operation, and Decommissioning ......................................... 22

    3. Environmental Appraisal .......................................................................... 28

    3.1 Scoping ....................................................................................................... 28

    3.2 Air Quality.................................................................................................... 34

    3.3 Noise and Vibration ..................................................................................... 36

    3.4 Townscape and Visual Amenity .................................................................. 52

    4. Conclusions ............................................................................................... 54

    Appendix A. Silvertown Works Area Worksite Layout Stage 1 STP & PCC Segment Plant Option [STWTN-ATK-GEN-XXXX-SK-Z-0273] ............................. 55

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    List of Tables

    Table 2-1 The required material resources for the Scheme, STP and PCC segment manufacturing plant .................................................................................................. 23

    Table 2-2 The waste arsing for the Scheme, and additional waste arising from proposed STP and PCC segment manufacturing plant ............................................ 25

    Table 2-3 Envisaged additional HGV movements required for construction, operation and decommissioning of the STP ............................................................................. 27

    Table 3-1 ES Chapters unaffected by the introduction of Slurry TBM and STP to the Scheme Description ................................................................................................. 29

    Table 3-2 Noise and vibration sensitive receptors .................................................... 38

    Table 3-3 External Plant used during STP Operation............................................... 41

    Table 3-4 Predicted Construction Noise Levels with STP During - Daytime Period . 42

    Table 3-5 Predicted Construction Noise Levels with STP Night time period ......... 44

    Table 3-6 Predicted Construction HGV Noise Levels with the proposed STP .......... 45

    Table 3-7 Predicted Construction Noise Levels with Proposed STP and the Segment Manufacturing Plant - Daytime ................................................................................. 47

    Table 3-8 Predicted Construction Noise Levels with Proposed STP and the Segment Manufacturing Plant Night time ............................................................................. 48

    Table 3-9 Predicted Construction HGV Noise Levels with Proposed STP and PCC Segment Manufacturing Plant .................................................................................. 50

    List of Figures Figure 2-1 Excerpt of the layout of Silvertown Worksite inclusive of Slurry Treatment Plant and on-site Segment Manufacturing ............................................................... 18

    Figure 2-2 Typical Schematic of a Slurry Treatment Plant ....................................... 21

    Figure 3-1 Noise and vibration sensitive receptors locations ................................... 39

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    List of Abbreviations AADT Annual Average Daily Traffic

    AQMP Air Quality Management Plan

    CMS Construction Method Statement

    CoCP Code of Construction Practice

    DLR Docklands Light Railway

    DMRB Design Manual for Roads and Bridges

    EPB Earth Pressure Balance

    ES Environmental Statement

    GLA Greater London Authority

    HGV Heavy Goods Vehicle

    NRMM Non-Road Mobile Machinery

    PCC Precast Concrete

    SPG Supplementary Planning Guidance

    SR Sensitive Receptor

    STP Slurry Treatment Plant

    TBM Tunnel Boring Machine

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    TfL Transport for London

    Page 7 of 56

  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    Glossary of Terms

    Annual Average Daily Traffic The total volume of vehicle traffic of a road for a year divided by 365 days.

    Bentonite Bentonite is a highly expansive and naturally occurring clay material. Used during the tunnelling both as transport medium for excavated material in the slurry circuit and as a support medium for the tunnel face.

    Code of Construction Practice The Code of Construction Practice contains a series of measures and standards of work to be applied to the construction of a project ensuring a consistent approach to the management of construction activities.

    Construction Method Statement A document used to describe the envisaged construction processes, programme, arrangements of temporary worksites and logistics considerations associated with construction of the proposed Silvertown Tunnel Scheme.

    Contractor The Contractor will be the construction entity through which the Project Company would deliver the design and construction of the Scheme and includes anyone who directly employs or engages construction workers or manages construction work, including sub-contractors, or any individual self-employed worker or business that carries out, manages or controls construction work.

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    Cutter Head The rotating front face of a Tunnel Boring Machine (TBM) which physically mines the ground during TBM advancement.

    Design Manual for Roads and Bridges The Design Manual for Roads and Bridges is a series of 15 volumes that provide standards, advice notes and other documents relating to the design, assessment, and operation of trunk roads, including motorways in the UK. This includes Volume 11 Environmental Assessment.

    Development Consent Order A Development Consent Order is the means of obtaining permission for developments categorised as Nationally Significant Infrastructure Projects.

    Earth Pressure Balance (EPB) Tunnel Boring Machine

    A type of tunnel boring machine used in soft ground. The machine uses the excavated material to balance the pressure at the tunnel face. Pressure is maintained in the cutter head by controlling the rate of extraction of spoil through the removal Archimedes screw and the advance rate of the machine.

    Environmental Impact Assessment Environmental Impact Assessment is a key aspect of many large scale planning applications which identifies the potential environmental effects of a development project.

    Environmental Statement An Environmental Statement is the written material submitted to the Secretary of State in fulfilment of the EIA regulations.

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  • Silvertown Tunnel

    Slurry Tunnel Boring Machine (TBM) and Treatment Plant: Environmental Appraisal

    Heavy Goods Vehicle (HGV) European Union term for any vehicle with a gross combination mass of over 3500kg.

    Lime Milk A mixture of hydrated lime and water.

    Non-Road Mobile Machinery Any mobile machine, item of transportable industrial equipment, or vehicle (with or without bodywork) that is: n

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