construction noise management plan warrenpoint harbour

CONSTRUCTION NOISE MANAGEMENT PLAN

WARRENPOINT HARBOUR

Rp001 2018195 (Warrenpoint Harbour)

7 June 2019

2 Rp001 2018195 (Warrenpoint Harbour)

PROJECT: WARRENPOINT HARBOUR

PREPARED FOR: WARRENPOINT HARBOUR

THE DOCKS

WARRENPOINT

CO. DOWN

BT34 3JR

ATTENTION: KIERAN GRANT

REPORT NO.: RP001 2018195

Disclaimer

This report is provided for the stated purposes and for the sole use of the named Client. Irwin Carr Ltd

accepts responsibility to the Client alone that the report has been prepared with the skill, care and

diligence of a competent engineer, but accepts no responsibility whatsoever to any parties other than the

Client. Any such parties rely upon the report at their own risk.

Copyright

The concepts and information contained in this document are the property of Irwin Carr

Ltd. Use or copying of this document in whole or in part without the written permission of Irwin Carr Ltd

constitutes an infringement of copyright. Information shall not be assigned to a third party without prior

consent.

Document Control

Status: Rev: Comments Date: Author: Reviewer:

Final 1.0 7 June 2019 Shane Carr Chris Jordan


Table of Contents

1.0 INTRODUCTION .................................................................................................................... 4

2.0 DEVELOPMENT DESCRIPTION .............................................................................................. 4

3.0 DETAILS OF NOISE GENERATING ACTIVITIES ........................................................................ 5

4.0 OUTLINE OF PHASING OF CONSTRUCTION ACTIVITIES ......................................................... 5

5.0 HOURS OF OPERATION ........................................................................................................ 5

6.0 BS5228:2014 ........................................................................................................................ 6 6.1 The ABC Method .......................................................................................................................... 6 6.2 Environmental Noise Survey ........................................................................................................ 7 6.3 Noise Levels ................................................................................................................................. 7

7.0 OBSERVATIONS .................................................................................................................... 8

8.0 NOISE MODELLING ............................................................................................................... 8 8.1 SoundPLAN Modelling ................................................................................................................. 8

8.1.1 Model Inputs ......................................................................................................................... 9 8.1.2 Receptor Locations ................................................................................................................ 9 8.1.3 Predicted Noise Levels ........................................................................................................... 9

9.0 MITIGATION ......................................................................................................................... 9

10.0 COMMUNITY RELATIONS ............................................................................................. 10

11.0 CONCLUSION ............................................................................................................... 11

APPENDIX A SITE LOCATION

APPENDIX B NOISE MAP


1.0 INTRODUCTION

Irwin Carr Consulting Ltd have been commissioned by Warrenpoint Harbour to produce a

construction noise management plan associated with proposed work on the harbour land.

It is understood that this noise management plan will be relied upon by the Nippon Gases UK

Marine Licence Application for construction of two unloading pipes & a power supply over the

water to the jetty adjacent to the Ro-Ro dock plus further west a flap valve in the sea wall on new

surface drainage from the adjacent storage tank installation.

The purpose of this assessment is to assess the potential impact of noise at the boundary of the

site but assessing the impact from existing construction ongoing within the harbour property.

2.0 DEVELOPMENT DESCRIPT ION

Planning permission associated with the planning application number LA07/2015/0056/F was

granted on 21 October 2015 for:

Construction of pipelines (2no) and 7 horizontal storage tanks for the supply by ship of

liquid Carbon Dioxide, with a total storage capacity of 3,200 tonnes and venting by

silencer at jetty. The storage tanks will have plant access steelwork and a new hard

standing area, and new access road. A loading bay with weighbridge to include

containerised weighbridge station for 2 road tankers. A containerised Motor Control

Centre will supply power and a containerised refrigeration centre of 20m2 to keep Carbon

dioxide at normal operating temperature. A containerised Quality Assurance lab of 20m2.

There were a number of planning condition requiring a Construction Method Statement (CMS) to

be submitted to the Planning Authority for agreement with the NIEA prior to the commencement of

construction.

It is the purpose of this additional noise assessment to address these specific requirements of the

planning consent in advance of the construction works beginning onsite.


3.0 DETAILS OF NOISE GENERATING ACTIV IT IES

Noise generating construction activities at the permitted development site will employ typical

construction methods i.e. site clearance, earthworks/remediation, foundations, construction of

buildings, roads and landscaping. Typical construction noise levels are presented within Table 1

below.

Table 1: Typical Noise Levels from Construction Works (Ref: BS 5228)

Activity Plant LAeq at 10m

Site clearance/excavation

Earthworks

Lorries (drive by)

Dozers

HGV and tippers

70 dB

87 dB

84 dB

Foundations

Concrete Pour

Place and vibrate

Concrete Cycle Cement

Mixers

up to 80 dB

up to 86 dB

80 dB

74 dB

Metal Frame Large crane operations

Place and vibrate

86 dB

80 dB

Grinding Angle Grinder 80 dB

Generators Diesel Generators 65 dB

Road works/landscaping Surfacing/rolling 76 - 86 dB

4.0 OUTLINE OF PHASING O F CONSTRUCTION ACTIV IT IES

The method of construction will be site clearance, earthworks and remediation, foundations,

construction of buildings, roads and landscaping.

5.0 HOURS OF OPERATION

Where construction activity takes place for a development in the vicinity of residential properties, it

is standard practice that the activities would operate between the hours of 07:00 and 18:00 on

Monday to Fridays, between 07:00 and 13:00 on Saturdays and there will be no activity on

Sundays or Bank Holidays.


6.0 BS5228:2014

The Code of practice for noise and vibration control on construction and open sites (BS 5228-

1:2014) provides a number of methodologies for assessing the significance of construction noise at

residential receptors. These methodologies “would generally apply to projects of a significant size”,

with a more generalised consideration of construction noise impact recommended for smaller

projects.

The standard presents criteria based on fixed limits and noise change criteria. Given the scale of

the project under assessment, it is appropriate to adopt the noise change criteria using the “ABC

Method”.

6.1 THE ABC METHOD

The existing ambient noise level at a residential property is rounded to the nearest 5 dB and this

number is used to determine the threshold value for each of three time periods (if applicable):

Night-time, Evenings and Weekends, and Daytime. The threshold values are shown in Table 1

below.

The total ambient noise level (including construction noise) is then compared with the threshold

values to determine if a significant effect is likely.

A significant effect is deemed to occur if the total LAeq noise level, including construction noise,

exceeds the threshold level for the Category appropriate to the ambient noise level.

Table 2: BS5228:2014 Construction Noise Assessment (ABC Method)

Assessment category and threshold value period

(LAeq)

Threshold values, in decibels (dB)

Category AA) Category BB) Category CC)

Night-time (23:00 – 07:00) 45 50 55

Evenings and weekends D) 55 60 65

Daytime (07:00 – 19:00) and Saturdays (07:00 –

13:00) 65 70 75

A) Category A: Threshold values to use when ambient noise levels (when rounded to the nearest 5 dB)

are less than these values.

B) Category B: Threshold values to use when ambient noise levels (when rounded to the nearest 5 dB)

are the same as category A values.

C) Category C: Threshold values to use when ambient noise levels rounded to the nearest 5 dB) are

higher than category A values.

D) 19:00 – 23:00 weekdays, 13:00 – 23:00 Saturdays and 07:00 – 23:00 Sundays.


6.2 ENVIRONMENTAL NOISE SURVEY

There are ongoing construction works to build a lorry parking area on the north western side of the

Warrenpoint Port, towards the Narrow Water round about. The ground works, angle grinding and

concrete pouring associated with these construction works would be considered to be similar to

what is propose din association with the works required in this application.

Noise levels were measured at the edge of the site of the construction works. The location is

presented in Appendix A and Table 2 and measured over 7 days from 8 to 14 May 2019. The

survey was undertaken by Christy Carr using the following equipment:

• 01 dB Duo Sound Level Meter

• 01 dB CAL21 Acoustic Calibrator

Table 3: Noise Monitoring Location

Location (Irish Co-ordinate System)

Noise Monitoring Location 312985, 318887

The acoustic parameters measured included LAeq and LA90.

Instrumentation was check calibrated before and after each survey period with no deviations

noted. Weather conditions were mixed throughout the measurement period but did not appear to

affect the measurements due to the high ambient sound level generated by passing traffic along

the busy Newry Road (A2).

6.3 NOISE LEVELS

Figure 1 presents the results of the long-term external noise level measurements.

Figure 1: Acoustic survey time history


7.0 OBSERVATIONS

As per Figure 1, noise levels follow the typical diurnal pattern of higher noise levels during the day than

night.

To permit comparison with BS5233 Guidelines the relevant LAeq,12hr – Daytime values are presented in

Table 4. As per Table 4, category A values apply to the permitted development.

Table 4: LAeq,16hr and LAeq,8hr values

Day Date LAeq,14hr, dB

Wednesday 8 May 2019 56.5

Thursday 9 May 2019 53.0

Friday 10 May 2019 50.1

Saturday 11 May 2019 52.7

Sunday 12 May 2019 46.4

Monday 13 May 2019 48.5

Tuesday 14 May 2019 49.6

It can be seen that the measured noise level from similar construction work does not exceed the

permitted noise level at the site boundary.

8.0 NOISE MODELLING

Noise from the proposed development, or the specific noise level, has been predicted using

SoundPLAN acoustic modelling software.

8.1 SOUNDPLAN MODELL ING

For the purposes of this assessment, computer modelling has been undertaken to accurately

predict noise emissions at the nearest residential properties due to the proposed alterations.

The model was implemented in SoundPLAN version 8.1, which is produced by Braunstein & Berndt

GmbH. The SoundPLAN implementation of ISO9613 has been tested in-house by SoundPLAN

developers to ensure calculated results are within 0.2dB of the standard

The model is integrated, allowing noise from all sources, with prediction methodologies to be

undertaken simultaneously. The noise model can also takes into consideration detailed

• Topographical effects

• Atmospheric absorption

• Ground absorption

• Screening effects

• Reflections

• Focussing effects and

• Meteorological conditions

The model for the construction of the proposed facility considers a worst-case scenario when

works are being carried out on both the pipeline and the tanks simultaneously.

The screening effects of the larger buildings along the A2 Newry Road has not been taken into

account in the model. The ground absorption was set to ‘0’ in areas of hard standing, i.e. harbour,

roads, over water and in all residential areas. Ground absorption was set to ‘1’ in all other areas,

i.e. soft ground.


8.1.1 Model Inputs

The main noise sources associated with the development are:

• Grinding and welding at location of pipeline (Sound Power Level 98dB(A))

• Excavation of work at location of tanks (Sound Power Level 105dB(A))

8.1.2 Receptor Locations

There are two specific areas of concern, both ecologically sensitive sites and residential receptors.

Details of the receptors included in the noise modelling are provided in Table 5 below and the

receptor locations can be seen in Appendix A.

It is understood that the are of greatest ecological concern is between the end of the Harbour area

and the Narrow Water Castle.

Table 5: Receptor Locations

Location Irish Grid Reference

E1 312947, 319051

E2 312906, 319015

R1 (Woodlands) 313549, 319074

R2 (Lower Dromore Road) 313860, 318518

8.1.3 Predicted Noise Levels

The predicted daytime construction noise levels at each of the receivers is shown in Table 6 below.

Table 6: Predicted specific noise level due to all operational sources

Receptor Location Daytime predicted level dB LAeq

E1 49.2

E2 49.9

R1 (Woodlands) 36.5

R2 (Lower Dromore Road) 35.6

It can be seen that the predicted noise level at the sensitive areas of the ASSI in terms of noise

impact will be below 50dB. This is a similar noise level to what has been measured at the

boundary of the site during when similar construction works were being carried out.

In addition the noise map in Appendix B shows the noise levels in the closest part of the ASSI to be

below the 70dB threshold where it would be considered to have a minimal impact.

In addition the noise level at the nearest residential locations will be significantly lower than the

criteria set out in the BS5228 guidance.


9.0 MITIGATION

There are a number of additional mitigation measures proposed to be incorporated into the works

to minimise the noise impact. Noise impact as a result of the construction phase of the proposed

development may be perceptible at nearby properties, but this will be short term and temporary in

duration.

A number of appropriate mitigation measures are recommended to ensure the BS 5228 target

limits are not exceeded:

• Training and Supervision

Operatives will be trained to employ appropriate techniques to keep site noise to a minimum and

will be effectively supervised to ensure that best working practice in respect of noise reduction is

followed. Special attention will be given to the use and maintenance of sound-reduction

equipment fitted to power tools and machines.

• Choice and Operation of Plant

o Position of plant as far as possible from nearby residential properties and utilising

barriers such as screening, stock piles etc.

o Ensuring plant is well maintained especially lubrication of bearings, sharpening of

cutting edges, integrity of silencers and where possible, new machinery tested under

stricter EU Guidelines.

o Audible reversing warning systems on dump trucks should be of a type which, whilst

ensuring that they give proper warning, have a minimum noise impact on premises

outside the site.

o Avoid unnecessary revving of engines and switch off equipment when not required.

o Keep internal haul routes well maintained.

o Use rubber linings in, for example, chutes and dumpers to reduce impact noise.

o Minimise drop height of materials.

o Silenced generator and low noise grinding equipment will be used on the site to

minimise the noise at source.

• Working Methods

Where reasonably practicable, quiet working methods should be employed.

• Screening

Use of screening where possible such as, dense site perimeter boarding, stock piles etc as well as

specific hoarding around the site to minimise noise

• Limit of Plant On-Time

At locations where particularly noisy operations are near occupied properties, machine operation

time should be reduced as much as possible.

10.0 COMMUNITY RELATIONS

Good relations with people living and working in the vicinity of site operations are of paramount

importance. Early establishment and maintenance of these relations through the carrying out of

site operations will go some way towards allaying people’s fears.

It is suggested that good relations can be developed by keeping people informed of progress and

by treating complaints fairly and expeditiously.

To ensure the site is managed to a certain standard a competent and responsible person needs to

manage the daily operations of the site. This person would be responsible for matters relating to

noise and vibration and will help establish and maintain good communication between the

contractor/developer, Local Authority and residents.


11.0 CONCLUSION

Irwin Carr Consulting Ltd were commissioned by Warrenpoint Harbour to produce a construction noise

management plan (CNMP) to enable the discharge of condition 2 of planning permission

LA07/2015/0056/F.

The CNMP details the hours of operation, contact details of the response person, the phasing of

construction activities and mitigation measurements that will ensure that Category A construction

noise limits as defined under BS5228:2014 are achieved at neighbouring residential dwellings.

In addition the noise at the site boundary will not cause an significant impact to the sensitive areas of

the ASSI.

For the reasons outlined within this report, Irwin Carr Consulting is of the opinion that noise generated

by the construction of the permitted development should not adversely impact neighbouring properties.


APPENDIX A: SITE LOCATION

**Note- The above diagram is not to scale and is for illustrative purposes only

E1

Noise

Measurement

Location

E2

R1

R2

Existing

Construction Site


APPENDIX B: NOISE MODELLING

C:\Users\Shane Carr\Desktop\Modelling\Warrenpoint Harbour\2018195\Wpt Harbour.sgs

Customer:Warrenpoint HarbourProject: Warrenpoint HarbourProject-No. 2018195

Map

1

Warrenpoint Harbour

Normal construction at the site of the ship berth and tanks

Levels Ldin dB(A)

= 35= 40= 45= 50= 55= 60= 65= 70= 75

Signs and symbolsPoint receiver

Industrial building

Noise calculation area

Facade as source

Roof as source

Geometry bitmap

Punktquelle

Bodeneffekte

Length scale 1:38960 30 60 120 180 240

m

313000

313000

313250

313250

313500

313500

313750

313750

318250

318250

318500

318500

318750

318750

319000

319000

construction noise management plan warrenpoint harbour

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