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MERSEY GATEWAY
BRIDGE PROJECT
NOISE AND VIBRATION
MANAGEMENT PLAN
REF: MER-DJV-REP-ENV-00-331003
REVISION NO. 03
SPV – MERSEYLINK CJV – SAMSUNG, FCC & KIER
Mersey Gateway Bridge Noise and Vibration Management Plan Final Report
MER-DJV-REP-ENV-00-331003 March 2014
Mersey Gateway Bridge
Noise and Vibration Monitoring Plan Version 3 MER-DJV-REP-ENV-00-331003 Status F
March 2014 i
Document Control Sheet
Rev. Status Date By Check Approved
0 1st Draft 09/08/13
Alexandra Clarke
Tamara Percy
Dan Atkinson
Sarah Edgar
1 Final 16/09/13 Dan
Atkinson Tamara Percy
Sarah Edgar
2 Final 26/09/13 Dan
Atkinson Tamara Percy
Sarah Edgar
3 Final (removal of trigger levels,
as requested by EHO) 13/03/14
Dan Atkinson
Mark Hampton
Tamara Percy
URS Royal Court Basil Close Chesterfield S41 7SL
Merseylink Design Joint Venture (the DJV) (comprising Flint & Neill Ltd, URS Infrastructure & Environment UK Limited, Eptisa and Fhecor ) has prepared this Report for the sole use of Merseylink Civil Contractors JV (“Client”) in accordance with the Agreement under which our services were performed. No other warranty, expressed or implied, is made as to the professional advice included in this Report or any other services provided by the DJV. This Report is confidential and may not be disclosed by the Client nor relied upon by any other party without the prior and express written agreement of the DJV.
The conclusions and recommendations contained in this Report are based upon information provided by others and upon the assumption that all relevant information has been provided by those parties from whom it has been requested and that such information is accurate. Information obtained by the DJV has not been independently verified by the DJV, unless otherwise stated in the Report.
The methodology adopted and the sources of information used by the DJV in providing its services are outlined in this Report. The work described in this Report is based on the conditions encountered and the information available during the period when the report was compiled. The scope of this Report and the services are accordingly factually limited by these circumstances.
Where assessments of works or costs identified in this Report are made, such assessments are based upon the information available at the time and where appropriate are subject to further investigations or information which may become available.
The DJV disclaim any undertaking or obligation to advise any person of any change in any matter affecting the Report, which may come or be brought to the DJV attention after the date of the Report.
Certain statements made in the Report that are not historical facts may constitute estimates, projections or other forward-looking statements and even though they are based on reasonable assumptions as of the date of the Report, such forward-looking statements by their nature involve risks and uncertainties that could cause actual results to differ materially from the results predicted. The DJV specifically does not guarantee or warrant any estimate or projections contained in this Report.
Copyright
© This Report is the copyright of the DJV. Any unauthorised reproduction or usage by any person other than the addressee is strictly prohibited
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Contents 1 INTRODUCTION .................................................................................................. 1
1.1 The Mersey Gateway Project ............................................................................... 1
1.2 Purpose of this document ..................................................................................... 2
1.3 Structure of this NVMP ......................................................................................... 2
2 BASELINE: SUMMARY OF EFFECTS ................................................................. 2
3 MITIGATION STRATEGY .................................................................................... 5
3.2 Noise Insulation Regulations 1975 ....................................................................... 8
3.3 Noise barriers ....................................................................................................... 8
4 NOISE MONITORING .......................................................................................... 9
4.1 Pre-construction Phase Monitoring ....................................................................... 9
4.2 Construction Phase Monitoring ........................................................................... 11
5 REFERENCES ................................................................................................... 12
Figures
Figure 1: Noise and Vibration Management Plan Proposed Ambient Noise Monitoring Locations.
Fencing Sheet 6 of 12: MER-DJV-DRA-HWY-00-210306
Fencing Sheet 7 of 12: MER-DJV-DRA-HWY-00-210307
Fencing Sheet 8 of 12: MER-DJV-DRA-HWY-00-210308
Fencing Sheet 9 of 12: MER-DJV-DRA-HWY-00-210309
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1 INTRODUCTION
1.1.1 This Noise and Vibration Management Plan (NVMP) has been produced to provide
details of all Noise and Vibration Mitigation and Monitoring required for the Mersey
Gateway Project. The requirements for this mitigation were identified in the Further
Applications Environmental Statement (Gifford, 2011), and then collated in the
Construction and Operation code of Practice for Environmental management (COPE,
2011, B4027D/COPE/R01). At present this is a dynamic document which will be updated
as pre-construction reports become available.
1.1 The Mersey Gateway Project
1.1.2 Halton Borough Council (the “Council”) is promoting a new road crossing of the Mersey
Estuary (the “Estuary”) in the Borough of Halton (the “Borough”) and associated works to
incorporate the new road crossing into the existing road network and to make changes to
that network. Collectively the works required are known as the Mersey Gateway Project
(hereafter referred to as the “Project”).
1.1.3 The Project will provide effective road connections to the Liverpool City area from north
Cheshire in the south, thereby providing connectivity for the sub-region and addressing
existing congestion in the Borough. The new road capacity will rebalance the
transportation infrastructure within Halton towards delivering local sustainable transport
and economic goals.
1.1.4 The Project’s scope includes the following:
1. The delivery of a new road crossing of the River in Halton, known as the Mersey
Gateway Bridge (referred to as the “New Bridge” throughout this plan);
2. Incorporation of the New Bridge in the existing highway network. These works are
referred to as the Remote Highway Works;
3. Modification and de-linking of the Silver Jubilee Bridge (SJB) (excluding the asset
management of the SJB works);
4. Integration of the revised networks with public transport, cycle and pedestrian
links across Halton;
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5. Integration with the surrounding environment through landscaping adjacent to the
New Bridge and SJB;
6. Implementation of tolling and development of associated infrastructure; and
7. Letting a Concession Contract for the construction, operation and maintenance of
the Project.
1.2 Purpose of this document
1.2.1 This document describes the processes, methodologies and behaviours that the project
team will follow in order to mitigate and minimise the effect of its operations.
1.2.2 This plan includes best practice on the control and management on noise and vibration
including suggested hours of working for certain activities in certain areas to manage and
mitigate adverse effects of the Project including proposals on sensitive receptors.
1.3 Structure of this NVMP
1.3.1 The NVMP is structured as follows:
• Section 2: provides a brief overview of the potentially significant noise and
vibration effects for the scheme;
• Section 3: sets out the mitigation strategy;
• Section 4: addresses the monitoring strategy for the scheme;
• Section 5: references
2 BASELINE: SUMMARY OF EFFECTS
2.1.1 This section presents a summary of the potentially significant noise and vibration effects,
predicted for the scheme.
2.1.2 Table 2.1 presents the potential effects for both the construction and operational phases
of the scheme
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Table 2.1- Summary of potentially significant Noise and Vibration Effects
Project Phase Effect Receptor and importance
Nature of effect
Construction General Construction activities
Dwellings – High importance
Temporary effect for project duration. Approx. 1,200 dwellings within 100m.
Noise from general construction activities including canal bridge
Area 1 – St Helens Canal – Medium importance
Temporary increase in noise, up to 6 months
Noise from minor construction activities
Area 2 – SJB northern approach, Dwellings – High importance
Noise from bridge construction activities
Area 6 – Wigg Island – High importance
Temporary increase in noise, up to 27 months.
Noise from viaduct construction activities
Area 6 – Manchester Ship Canal – Medium importance
Temporary increase in noise, up to 9 months.
Area 7- Astmoor industrial estate – Low importance
Temporary increase in noise, up to 25 months
Noise from general construction activities
Area 8 – Bridgewater Canal – medium importance
Temporary increase in noise, up to 9 months
Area 8 – residential areas near Bridgewater Junction – high importance
Temporary increase in noise, up to 11 months
Noise from construction and highway alignment modifications
Area 9 – residential areas adjacent to the Central expressway – high importance
Temporary increase in noise, 12 months
Noise from construction of distributor roads and bridge
Area 9 – residential areas adjacent to Lodge Lane Junction
Temporary increase in noise, 12 months
Noise from minor construction activities
West Bank Primary School – High importance
Temporary increase in noise, up to 6 months
Noise from construction of distributor roads and bridge
Woodside Primary School –high importance
Temporary increase in noise, 12 months
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Project Phase Effect Receptor and importance
Nature of effect
Operational Overview Noise from operation of the road
Residential areas – high importance
Permanent decrease in number of people affected by noise.
Overview – Vibration from operation of the road
Residential areas – high importance
Permanent –slight increase in number bothered.
Road Traffic noise Area 1 – industrial and commercial areas – Negligible importance
Permanent – slight increase
Area 1 – St Helens Canal – medium importance
Permanent increase in noise levels
Area 2 – Residential areas adjacent to northern approach to SJB – High importance
Permanent decrease in noise levels
Area 3 – SPA- high importance
Area 4 – residential areas adjacent to the southern approach of SJB – high importance
Area 5 – residential areas adjacent to the Weston Point Expressway – high importance
Area 6 – Wigg Island – very high importance
Permanent – increase in noise levels
Area 6 – Manchester Ship canal – medium importance
Area 7- Astmoor industrial estate – low importance
Area 8 – residential areas adjacent to Bridgewater Junction
Area 8 – Bridgewater canal – medium importance
Area 9 – residential areas adjacent to the central expressway
Area 10 – residential areas adjacent to the Weston link to M56
Permanent – slight increase in noise levels
Cavendish school – high importance
Permanent – slight decrease in noise levels
Hallwood Park Primary School – high importance
West Bank Primary School – high importance
Permanent decrease in noise levels of about 6dB
Weston Point community school – high importance
Permanent decrease in noise levels of about 6 dB
Woodside Primary school – high importance
Permanent increase in noise levels of about 9 dB
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3 MITIGATION STRATEGY
3.1.1 Noise levels generated by construction activities are regulated by guidelines and subject
to local authority control.
3.1.2 An informal agreement will be reached with the LPA on the methodology for construction
baseline monitoring and compliance monitoring. This agreement will detail a noise and
vibration control regime for construction works prior to construction commencing.
3.1.7 The existing ambient noise levels at receptor locations are yet to be determined, however
suitable representative locations have been proposed within this document. Details of
pre-construction monitoring are included in section 4.
3.1.8 To keep construction noise to a minimum the contractor will follow good practice
including noise management mitigation measures, and the implementation of best
practicable means to minimise any impacts.
3.1.9 Potential effects from the scheme and Mitigation measures for these are outlined in
Tables 3.2 below for construction and 3.3 for operation.
Table 3.2 Noise mitigation – Construction Phase
Project Phase Effect Cause of Effect Mitigation/Management option
Construction
Impact on local
residents/occupiers
adjacent to works
Noise
disruption/annoyance.
Contractor to appoint a community liaison offer
with a publicised contact telephone number.
Noisy tasks being
undertaken.
Occupiers/residents to be given advance notice,
in writing, explaining the reasons for the works,
the expected time and duration of works, and
the procedures to be adopted for minimising the
noise or vibration.
Where work has to be undertaken during
evening or night-time periods the contractor
would advise and consult with the
Environmental Health Officers (EHO) of the
council in accordance with an agreed
procedure.
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Project Phase Effect Cause of Effect Mitigation/Management option
Excessive noise from ill
maintained/inefficient
machinery.
All plant and equipment associated with the
construction works should be properly
maintained, provided with effective silencers
and operated in such a manner as to avoid
causing excessive noise emission. Where plant
has been designed to operate with engine
covers to reduce noise, these should be used
and remain closed while the plant is in
operation. Unless otherwise direction by senior
construction management, items of plant in
intermittent use should be shut down during idle
periods.
Noise from static
machinery
Static plant to be located in areas as far from
inhabited buildings as possible and should be
screened where practicable. Plant known to
emit noise predominantly in one direction
should, where possible, be screened or
orientated so that noise is directed away from
noise sensitive areas.
General site noise No music or radios should be played on site.
Noise from operational
site vehicles.
Audible warning systems, such as vehicle
reversing sirens, would normally be set to as
low a setting as is compatible with safety
requirements. Where appropriate, broadband
warning systems would be used.
Noise from site
compounds.
Site compounds to be located as far as possible
from local occupied premises and site buildings
should be situated to provide additional
screening between the works and other
occupied premises. Utilisation of site materials,
soil or spoil to create screening stockpiles
providing these do not create hazard in terms of
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Project Phase Effect Cause of Effect Mitigation/Management option
dust etc.
Impacts on
residents/occupiers
along transport
routes
Noise from site/delivery
vehicles etc.
The transport of materials on or off site by road
should generally take place during the normal
daytime working period and where possible
should also be routed away from particularly
sensitive receivers.
Impact on
neighbouring
community
Inconsiderate
construction
Site personnel to be informed about need to
minimise noise to the neighbouring community
as well as about health hazards of exposure to
excessive noise or vibration. Training to include
advice relating to proper use and maintenance
of tools and equipment, the positioning of
machinery on site to reduce noise emissions to
neighbouring communities, and the avoidance
of unnecessary noise when carrying out manual
operations when operating plant and equipment.
Table 3.3: Operational phase
Project Phase Effect Cause of Effect Mitigation/Management
Option
Operational Impact on local
residents/occupiers adjacent
to works
Noise from operation of
the road
Roadside Noise barriers
Vibration from operation of
the road
3.1.10 Noise will be controlled through restriction on working hours and/or restriction on
processes allowed in certain areas during construction. Night time working will be kept to
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a minimum. Normal working hours will be 0700 until 1900hrs, Monday to Friday and 0700
until 1300hrs on Saturdays. However, there may be occasions where night working is
unavoidable, such as works to the railway in Widnes.
3.1.11 Programming of noisy works near to schools will be undertaken where possible within the
school holiday period. The closest identified schools to the proposed scheme are
identified within Figure 1. It should be noted that West Bank Primary School is located
on the far side of West Bank to any proposed works. Given the acoustic screening
afforded by residential buildings on West Bank, this location is not considered to be at
risk from high levels of construction noise.
3.1.12 The above mitigation strategies are for general guidance only. More detailed verification
of noise levels will be undertaken for specific construction activities when specific plant
and working methods are known or when required by the local authority.
3.2 Noise Insulation Regulations 1975
3.2.1 Within the Noise Insulation Regulations 1975 (NIR) there is the power to offer noise
insulation to residential properties where the construction works “ are expected to cause
noise at a level, which in the opinion of the highway authority, seriously affects or will
seriously affect for a substantial period of time the enjoyment of an eligible building
adjacent to the site”. Levels defining ‘seriously affected’ or ‘substantial period of time’ are
not given in the regulations but are commonly defined as 75 dB LAeq, 12h for 10
consecutive days. It is accepted that these criteria would be used with this project. If
properties are found to be eligible for noise insulation as a result of operational noise,
every effort would be made to bring forward such treatment so that it would assist in
mitigating noise from the construction phase.
3.3 Noise barriers
3.3.1 Construction
3.3.2 Once baseline representative noise level data has been gathered, target construction
noise limits can be derived. Once this has been undertaken, a review of potential
mitigation measures can be undertaken to mitigate construction noise levels, where
required.
3.3.3 Operation
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3.3.4 Noise barriers will be erected in areas as detailed within the Environmental Statement for
the scheme (see Fencing Drawings Sheet 6, 7, 8 and 9 (MER-DJV-DRA-HWY-00-
210306 to 210309). These barriers will mitigate the effects of road traffic noise to
sensitive receptors. Under the Noise Insulation (Amendment) Regulations 1988
(Statutory Instrument No. 2000) noise insulation shall be provided to those properties
which are defined under the regulations as being ‘seriously affected for a substantial
period of time’.
3.3.5 There are 3 areas for which roadside noise barriers are proposed. These are;
• Area 8 – Residential areas adjacent to Bridgewater Junction
• Area 9 – Residential areas adjacent to the Central Expressway
• Woodside Primary School
3.3.6 For illustrative purposes and for the Reference Design, barriers of 2.4 metres height have
been proposed in areas where the road is at ground level. Where carriageways are
elevated the barrier height has been reduced to 1.2 metres as the ground elevation of the
barrier site provides an additional screening effect.
3.3.7 Final dimensions, materials and locations of noise barriers will be confirmed during
detailed design for the scheme, as part of the Fencing design package.
4 NOISE MONITORING
4.1 Pre-construction Phase Monitoring
4.1.1 It is proposed that pre-construction baseline noise monitoring is undertaken at a range of
noise sensitive locations, selected to be representative of the closest areas of residential
housing to the scheme. The proposed noise monitoring locations are shown graphically
within Figure 1, and summarised below in Table 4.1.
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Table 4.1 Proposed Pre-Construction Noise Monitoring Locations
Proposed Monitoring Location Number (from Figure 1)
Location details
1 Terrace Road – representative of the closest residential receptors to the proposed bridge
works
2 Catherine Street – representative of the closest residential receptors to the north of the main
alignment
3 Brookfield Avenue – representative of the closest residential receptors to the Bridgewater
Junction
4 Calvers – representative of a range of residential receptors to the east of the main scheme
alignment
5 Littlegate – representative of a range of residential receptors to the west of the main scheme
alignment
6 Cotton Lane – representative of a range of residential receptors to the west of the main
scheme alignment
7 Tawny Court – representative of a range of residential receptors to the east of the main
scheme alignment
8 Fenwick Lane – representative of a range of residential receptors to the west of the main
scheme alignment
9 Betchworth Crescent – representative of a group of residential receptors located to the south of
the Lodge Lane Junction
10 Millersdale Grove – representative of a range of residential receptors to the east of the main
scheme alignment
11 Martindale Grove – representative of a range of residential receptors to the north of the main
scheme alignment
4.1.2 The above locations may be used for baseline noise monitoring, where it is feasible to
get landowners permission to leave noise monitoring equipment, and it is suitably secure.
It is proposed that noise monitoring would be undertaken continuously over 24 hour
periods, to include a weekend, and at least two days during the midweek.
4.1.3 Where access is not feasible, suitable alternative representative locations may be
chosen. If these do not exist, manned monitoring over shorter periods would be
undertaken, as a last resort.
4.1.4 All monitoring shall be carried out by competent personnel and will be in accordance with
the guidance given in BS 5228. Noise monitoring can either be carried out at the noise
sensitive receiver location or in some circumstances can be carried out on the
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construction site boundary with suitable corrections to enable calculation of noise levels
at the required receptor location.
4.1.5 Vibration during most construction activities is not expected to cause major effects. The
proposed Continuous Flight Auger [CFA] piling technique that will be used in areas near
to residential receptors gives rise to minimal levels of ground borne vibration. Historical
data given within British Standard 5228 suggests that at distances beyond 20 metres
from piling using CFA techniques the level of ground borne vibration is imperceptible to
people. As there are no receptors closer than 20 metres to areas where CFA piling is
proposed, it is expected that there will be no impacts resulting from this piling technique.
4.2 Construction Phase Monitoring
4.2.1 Monitoring will be undertaken during construction in order to check noise and vibration
levels from construction activities. The methodology will be agreed in consultation with
the planning authority.
4.2.2 The regime for noise and vibration monitoring will be formulated as part of the agreement
with the Council. This will consider where activities will be undertaken that may give rise
to ground borne vibration, and identify the closest sensitive receptors where vibration
monitoring may be undertaken. Consideration of the types of activities, duration of
works, and number of potential receptors affected will be used to formulate where noise
monitoring will be undertaken, how frequently and for what duration. It is expected that
liaison will be undertaken with the Local Authority prior to the start of the works in
December 2013 to get agreement on the monitoring regime.
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5 REFERENCES
BS 5228:2009: Code of practice for noise and vibration control on construction and open
sites, Part 1: Noise and Part 2: Vibration
Construction and Operation code of Practice for Environmental management (COPE,
B4027D/COPE/R01), URS, 2013
Noise insulation Regulations 1975, as amended in 1988
The Mersey Gateway Project, Further Applications Environmental Statement, Gifford,
2011