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  • DO

    CU

    ME

    NT

    8.8

    July 2016Application Ref: EN020017

    Noise and Vibration Management PlanNational Grid (Richborough Connection Project) Order Regulation 5(2)(q) of the Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009

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  • Richborough Connection Project

    Volume 8

    8.8 Noise and Vibration Management Plan

    National Grid National Grid House Warwick Technology Park Gallows Hill Warwick CV34 6DA July 2016

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    Document Control

    Document Properties

    Organisation Arcadis

    Author Michael Van Der Merwe

    Approved by

    Title Noise and Vibration Management Plan

    Document Reference 8.8

    Version History

    Date Version Status Description/Changes

    12/02/2016 1 Draft

    24/02/2016 2 Draft Addressing comments

    01/02/2016 3 Draft Appendices added

    10/05/2016 4 Draft Updated following meeting with Local Authority EHOs

    14/07/2016 5 Final Updated for Deadline 2 to address comments from Local Planning Authorities

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    Table of Contents

    1.1 INTRODUCTION 1

    1.2 DESCRIPTION OF WORKS 2

    1.3 NOISE LIMITS 2

    1.4 WORKING HOURS 4

    1.5 NOISE CONTROL MEASURES 5

    1.6 SECTION 61 CONSENT APPLICATIONS 10

    1.7 PUBLIC NOTIFICATIONS AND COMMUNICATIONS 13

    1.8 NOISE INSULATION AND TEMPORARY RE-HOUSING 14

    1.9 VIBRATION ACTION LEVELS 16

    1.10 NOISE AND VIBRATION MONITORING 16

    1.11 SUITABLY QUALIFIED PERSONS AND TRAINING 17

    1.12 AUDIT AND REPORTING 18

    1.13 APPENDIX 1 19

    1.14 APPENDIX 2 25

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    1.1 INTRODUCTION

    1.1.1 This Noise and Vibration Management Plan (NVMP) incorporates the measures proposed and procedures for the management of noise and vibration arising from the construction of the Richborough Connection project in accordance with section 4.9 of the Construction Environmental Management Plan (CEMP; Document 5.4.3C(A)).

    1.1.2 This NVMP has been prepared by Arcadis on behalf of National Grid. The NVMP describes the noise and vibration control measures for all work activities associated with the construction of the proposed 400kV overhead line connection between Canterbury and Richborough and the removal of the existing 132kV PX route overhead line.

    1.1.3 The NVMP addresses the impact of noise and vibration and the control measures employed to mitigate the risks. These are supported through monitoring procedures to identify both elevated levels and review complaints should they arise. The complaints management procedure including the management responsibilities are also addressed.

    1.1.4 This Plan provides further detail on the principles for noise and vibration management as outlined in the following documents contained within the Development Consent Order (DCO) application:

    Chapter 11 Noise and Vibration of the Environmental Statement (ES; Document 5.2; Part 2 of 2);

    Statement of Statutory Nuisance (Document 5.6);

    Construction Environmental Management Plan (Document 5.4.3C); and

    Draft Development Consent Order (Document 2.1).

    1.1.5 This plan aims to assist in complying with the following legislation and guidance and should be read in conjunction with:

    Environmental Protection Act 1990 (as amended);

    Control of Pollution Act 1974; and

    British Standard (BS) 5228 'Code of practice for noise and vibration control on construction and open sites', Part 1: Noise (+A1:2014), and Part 2: Vibration (+A1:2014).

    1.1.6 The production and agreement of a NVMP prior to construction works commencing is required under Requirement 6 of the draft DCO (Doc 2.1(A)). It is however proposed that if this Plan can be agreed prior to, or during, the DCO examination that it could instead fall as a Plan under Requirement 5: Construction Environmental Management Plan and therefore certified under Article 44: Certification of Plans etc by the Secretary of State for the Department of Energy and Climate Change.

    1.1.7 The main works contractor will be responsible for the delivery of the measures outlined in this Plan. This will be secured through the contractual documentation and monitored by National Grid.

    1.1.8 This remainder of this plan outlines the following measures::

    working hours;

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    procedures for gaining Section 61 consents under the Control of Pollution Act 1974;

    general noise and vibration control measures in accordance with best practicable means (BPM) principles;

    public notifications and complaints handling;

    definition and triggers for noise insulation and temporary re-housing;

    site / activity specific noise control measures (see section 1.3 and section 1.5); and

    monitoring.

    1.2 DESCRIPTION OF WORKS

    1.2.1 The proposed development is made up of:

    A new 400kV overhead line between Richborough 400kV and Canterbury North 400kV Substations (to be known as the PC route). This would be approximately 20km long and would be built using 45 standard lattice pylons and 15 low height lattice pylons (60 pylons in total).

    A permanent diversion of an existing lower voltage 132kV overhead line (known as the PY route). This would enable the new 400kV overhead line to be constructed above the existing lower voltage overhead line, and would be done by building six new pylons, four of which are a different height so that the new 400kV overhead line could then be built. In addition to the removal of two pylons of existing lower voltage 132kV overhead line on the PY route due to the permanent diversion.

    Three temporary diversions where the new 400kV overhead line would cross over another existing lower voltage 132kV overhead line which runs from Richborough to Canterbury and is proposed to be removed as part of this project (known as the PX route). The PX route has to keep transferring electricity whilst the new 400kV overhead line is being built. To maintain local electricity supplies the PX route would be lowered onto wooden poles so that the new 400kV overhead line can be built over the top of this line.

    The removal of 20.6km (79 pylons) of existing lower voltage 132kV overhead line, the PX route (and its temporary diversions) which runs between Richborough 132kV Substation and Canterbury South 132kV Substation.

    Other works, for example, temporary access roads to reach pylon construction and demolition areas, bridge structures, highway works, construction compounds, protective scaffold structures, pylon work sites and ancillary works.

    1.3 NOISE LIMITS

    1.3.1 Noise significance thresholds and construction noise limits at sensitive receptors have been identified based on BS 5228-1 as outlined in the ES (Table 11.14) and summarised in Table 1.1.

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    Table 1.1 Significance threshold and noise limit for construction noise

    Relevant time period from BS5228

    Applicable time periods for the Project

    Noise significance threshold dB LAeq,T 1

    Noise limit dB LAeq,T 2

    Daytime Weekdays 07.00 19.00 Saturday 07.00 13.00

    Weekdays 07.00 19.00 Saturday 08.00 13.00

    65 70

    Evenings and Weekends Weekdays 19.00 23.00 Saturday 13.00 - 19.00 Sunday 07.00 19.00

    Saturday 13.00-17.00 Sunday 08.00-17.00

    55 60

    Night-time Weekdays 23.00-07.00 Weekends 19.00 07.00

    Not relevant other than for the activities outlined in 1.4.5

    45 50

    1.Noise significance criteria based on BS5228 significance criteria in Annex E (ABC Method)

    2.Based on criteria in BS5228

    1.3.2 Generally construction works will take place distant to sensitive receptor locations. Construction noise attenuates with distance from source. Noise predictions in the ES (Table 11.15) indicates that where works take place beyond 60m from a sensitive receptor, all construction activities will be within the daytime noise limit of 70dB(A). Beyond 170m from any construction works the noise limit of 60dB(A) for weekends (Saturday 13:00-19:00 and Sunday 07:00-19:00) would not be exceeded at any receptors. The ES predictions do not consider screening from topographical features, buildings and other structures. The highest construction noise impacts will therefore be confined to works that take place in close proximity to receptor locations.

    1.3.3 A list of construction activities taking place within 100m of residential receptor locations, therefore presenting the highest construction noise impacts, is shown in Appendix 1.

    1.3.4 The contractor will adopt best practicable means (BPM) to ensure compliance with the construction noise limits set out in Table 1.1. Noise control measures set out in Section 1.5 will ensure these limits are achieved.

    1.3.5 A combination of mitigation measures may be needed to achieve the noise limits set out in Table 1.1, particularly where construction activities take place within 60m of receptor locations. Receptors within very close proximity to construction works are set out in Appendix 1.

    1.3.6 It is proposed that for activities that are located particularly close to receptor locations and potentially present a high noise impact are subject to Restricted Working Hours as set out in Section 1.6, Table 1.3.

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    1.3.7 In circumstances where despite implementing BPM (as per provisions in Section 79(9) of the Environmental Protection Act 1990, see paragraph 1.5.1 below) the noise limits in Table 1.1 are not achieved, or works are outside the core or restricted working hours outlined in section 1.4 Section 61 applications will be made (see section 1.6 for further details).

    1.4 WORKING HOURS

    1.4.1 The control of working hours is key to ensuring noise and vibration impacts are only experienced during defined working hours.

    1.4.2 The contractor will carry out the works in such a way as to limit the adverse noise and vibration impact of the construction activities. Therefore, as far as practicable, works will only be undertaken during the DCO Core Working Hours.

    1.4.3 The Core Working Hours are set out in the draft DCO Schedule 3, Requirement 7 (Doc 2.1(A)):

    7.(1) Subject to sub-paragraphs (2) and (3) construction work must only take place between 0700 and 1900 Mondays to Fridays and between 0800 and 1700 on Saturdays, Sundays and Bank Holidays (the core working hours), unless otherwise approved by the relevant planning authority.

    1.4.4 Working on a consecutive Saturday and Sunday can only take place on two out of any four consecutive weekends in each relevant local authority area, unless otherwise approved by the relevant planning authority (sub-paragraph 2).

    1.4.5 The following minor operations may take place outside the Core Working Hours due to stakeholder operational or safety requirements (sub-paragraph 3) and are considered low noise generating activities:

    a. the installation and removal of conductors, pilot wires and associated protective netting across highways, railway lines or watercourses;

    b. the completion of operations commenced during the core working hours which cannot safely be stopped;

    c. any highway works requested by the relevant highway authority to be undertaken on a Saturday or a Sunday or outside the core working hours;

    d. security monitoring;

    e. the testing or commissioning of any electrical plant installed as part of the authorised development; and

    f. The completion of works delayed or held up by severe weather conditions which disrupted or interrupted normal construction activities.

    1.4.6 These DCO working hours are referred to as the Core Working Hours throughout this document. In some locations or for specific noisy activities working hours will be restricted to Monday to Friday, 07.00 19.00 inclusive. These hours are referred to as the Restricted Working Hours throughout this document.

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    1.5 NOISE CONTROL MEASURES

    Best Practicable Means

    1.5.1 General noise and vibration control measures are listed, with reference to British Standard (BS) 5228 'Code of practice for noise and vibration control on construction and open sites', Part 1: Noise (+A1:2014), and Part 2: Vibration (+A1:2014). The Contractor will use 'best practicable means' (BPM) to minimise nuisance from noise and vibration. BPM is defined by reference to the following provisions in Section 79(9) of the Environmental Protection Act 1990:

    a. 'Practicable' means reasonably practicable having regard among other things to local conditions and circumstances, to the current state of technical knowledge and to the financial implications;

    b. The means to be employed include the design, installation, maintenance and manner and periods of operation of plant and machinery, and the design, construction and maintenance of buildings and structures;

    c. The test is to apply only so far as compatible with any duty imposed by law; and d. The test is to apply only so far as compatible with safety and safe working

    conditions, and with the exigencies of any emergency or unforeseeable circumstances.

    General Noise and Vibration Control Measures

    1.5.2 All construction contractors will be required to follow standard good construction practice as outlined in BS 5228-1:2009+A1:2014 and BS 5228-2:2009+A1:2014. This will include the following measures:

    a. Construction will be confined to Core Working Hours as identified in Section 1.4. Where activities are predicted to potentially exceed construction noise limits (see Table 1.1 in Section 1.3) at receptors for sensitive times of the day such as Saturday 13:00-17:00 or Sundays and Bank Holidays 08:00-17:00, these specific works will be confined to the Restricted Working Hours (i.e. Monday to Friday 07.00 to 19.00);

    b. Careful selection of plant and construction methods. Only plant conforming to relevant national, EU or international standards, directives and recommendations on noise and vibration emissions will be used. The contractor will ensure that each item of plant used on the project complies with the noise limits quoted in the relevant European Commission Directive 2000/14/EC/United Kingdom Statutory Instrument (SI) 2001/1701 (as amended). The contractors Environmental Manager will maintain a register of plant and equipment and statutory certification;

    c. Design and use of acoustic screening measures where practicable and necessary, at the earliest opportunity to meet the noise limits in Section 1.3. Acoustic screening measures include site hoardings, acoustic barriers, acoustic enclosures, aco...

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