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Ruth Kinsey
From: Richard Mills <[email protected]>Sent: 15 December 2016 15:20To: development managementSubject: CLASP Demolition REF 8/15/03017/CTY Conditions 9 & 10Attachments: Environment Management Plan v4 15.12.16.pdf
Hello Ruth, please find the updated Environmental management plan concerning the recording of noise levels before and during the demolition works. A further report of noise level recordings will be submitted once the actual demolition work begins. Many thanks
Richard Mills Building Surveyor
M 07753 625 270 T 0115 838 4883
W www.arc-partnership.co.uk
Head Office: 4th Floor, City Gate East, Tollhouse Hill, Nottingham, NG1 5FS
Arc Property Services Partnership Limited (trading as arc partnership) is a joint venture between Nottinghamshire County Council and Scape Group. Arc Property ServicesPartnership Limited is registered in England and Wales. Company registration number 10074366. VAT registration number 239 5189 74.
Environment Management Plan
Demolition of CLASP Block, County
Hall, Loughborough Rd, West
Bridgford, Nottingham NG2 7QP
For
Nottinghamshire County Council
Version 4 Issued: 15/12/16
Job Number: 8185
Method Statement: CLASP County Hall, Nottingham
2 www.cmecdemo.com
Introduction
The site of the works is situated on a live council office site and car park, just off a main arterial route into
Nottingham city centre. Work involves site set up, asbestos removal, careful separation and demolition of
the CLASP Block and associated link corridors, ground works for the car park, reinstatements to H block
and Riverside and installation of a new bike shed.
Works will be phased to minimise the disruption to the parking area.
This Method Statement covers all of the control measures and safe working practices to enable the works
to be carried out in this highly sensitive business area.
• Site set up, exclusion boundary, tree protection and car park management.
• Establish safe pedestrian access to the Data centre and Riverside building.
• Establish dust protection scaffold to the Data block refrigeration plant.
• Asbestos removal in accordance with the Acorn Analytical demolition survey and removal
specification
• Demolition of the CLASP block, link corridors and car park planters
• Reinstatement work to the facades of the H block and Riverside building and temporary
protection there-to.
• Ground works for cycle storage provision.
• Conversion of the concrete raft foundation for temporary car parking
Site Location
CLASP Block, County Hall, Loughborough Road, West Bridgford, Nottingham NG2 7QP
Method Statement: CLASP County Hall, Nottingham
3 www.cmecdemo.com
Contents
1. Lorry Routing for Construction Traffic .................................................................... 4
2. Measures to Prevent the Deposit of Debris on the Public Highway ........................ 4
3. The Segregation of Movements on Site .................................................................. 6
4. Measures for the Control of Noise, Vibration and Dust Emissions .......................... 7
5. Waste Segregation ............................................................................................... 15
Method Statement: CLASP County Hall, Nottingham
4 www.cmecdemo.com
Introduction - Environmental Protection Act
CMEC Demolition Ltd recognises its Duty of Care under The Environmental Protection Act, the
Environmental Protection (Duty of Care) Regulations, The Controlled Waste (Registration of Carriers and
Seizure of Vehicles) Regulations, Special Waste Regulations and other associated statutory provisions.
“Controlled Waste” will only be released to a “Registered Carrier” after proof (original only) has been
produced by the “authorised person” all parts of the “Waste Transfer Note” will be suitably completed
with a copy remaining with CMEC Demolition Ltd for no less than 2 years.
Should “Special Waste” need to be removed from a project this too will only be released to a “Registered
Carrier” after the completion of a “Special Waste Transfer Note”. Pre-notification of the movement will be
given to the Environmental Agency and CMEC Demolition Ltd. will retain a copy of the SWTN for no less
than three years.
1. Lorry Routing for Construction Traffic
The works are situated at CLASP Block, County Hall, Loughborough Road, West Bridgford, Nottingham.
Our works have been programmed to comply with Nottinghamshire County Council’s specification to
maximise parking spaces still available during the works. Construction traffic routes / construction staff
routes / protection measures are as shown in the following three drawings for each relevant phase
(Drawing numbers 8185-001-01, 8185-001-02 & 8185-001-03).
Access / Egress
The access / egress point for the works will be via access points off Loughborough Road as indicated on the
Proposed Site Plan.
The routes will be maintained and kept clear at all times.
The utmost caution will be adopted when entering and leaving the site, owing to the close proximity of
pedestrians, especially shoppers, other road uses and visitors etc.
A traffic operative will be employed for the meet & greet, movements of plant / vehicles and all drivers of
construction traffic will adhere to the existing speed restriction areas.
2. Measures to Prevent the Deposit of Debris on the Public Highway
Haul Routes General
Un-paved haul routes can account for a significant proportion of fugitive dust emissions, especially in dry
or windy conditions, when the generation of dust through the movement of vehicles is exacerbated. It is
recommended that to ensure good practice, contractors should ensure that hard surfaces or paving is used
for all haul routes, which will be possible and the method used to minimise dust and the spread of debris in
this instance
Method Statement: CLASP County Hall, Nottingham
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Actions taken:
• Wheel washing (pressure washer) on leaving site.
• Additional damping down of haul routes with water plus a suitable additive binder/suppressant if
necessary.
• Leave tarmac in place for all haul routes on site for as long as possible.
• Hard landscaping of haul routes or use of a suitable dust suppressant.
• Ensure there is no site runoff of water / mud.
Demolition Works
• Use water as dust suppressant
• Use water canon & sprays/misters at ground level
• Operating high reach demolition equipment with integral water spray capabilities
• Use enclosed chutes and covered skips
• Securely cover skips
• Wrap building to be demolished
• Cutting equipment to use water as suppressant or suitable LEV (local exhaust ventilation)
Demolition Traffic
• All vehicles to switch off engines – no idling vehicles
• Effective vehicle cleaning and specific wheel-washing on leaving site (pressure washer)
• All loads entering and leaving site to be covered
• Ensure no site runoff of water or mud
• All non road mobile machinery (NRMM) to use ultra low sulphur tax-exempt diesel (ULSD) where
available
• On-road vehicles to comply to set emission standards (e.g. Euro IV)
• Hard surfacing and effective cleaning of haul routes
• 5mph limit around site (higher limits may be appropriate dependant on the site)
Site Activities
• Minimise dust generating activities on windy and dry days.
• Use water as dust suppressant plus a suitable additive binder/suppressant where applicable.
• Cover, seed and fence stockpiles to prevent wind-whipping.
Prevention of Pollutants Entering the Surface Water Course
We presume that Nottinghamshire County Council currently hold an active license for the whole site area
permitting the discharge of surface water off site into the adjacent surface water course. Within this
license agreement we understand that there will be stipulated threshold levels for suspended solids etc
and daily water samples are taken for analysis to ensure the permit threshold values for discharge are not
exceeded.
There may also be the potential for hydrocarbon contaminated runoff associated with potential hydraulic
spills which can occur during demolition activities.
Prior to the demolition works commencing, we are proposing to implement the following measures to all
drains surrounding the perimeter of the buildings to be demolished:
• All drainage/ surface water gullies to be packed with straw.
• The drainage covers will be lifted and a layer of permeable geotextile (terram 1000 gauge) will be
placed on the concrete slab and over the opening before the covers are replaced.
Method Statement: CLASP County Hall, Nottingham
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• The geotextile will sit in between the straw and the gulley cover. The geotextile will surround the
drainage cover by approximately 2m diameter.
• On top of the geotextile prior to the re-placement of the drainage/ gulley covers oil absorbent pads
will be placed to mitigate the potential for hydrocarbon impacted fluids to enter the surface water
courses should any hydraulic spills occur on site.
• Surrounding each drainage cover sat on the geotextile will be a small bund of 10mm clean stone
(no fines) wrapped in geotextile.
Should any rain/dust suppression required during the demolition activities, wash such materials towards
the drainage network. The measures detailed above will prevent particles from being discharged at
elevated levels off site. On a regular basis the accumulated sand around the
geotextile filtration system will be removed and the site surface swept clean.
The site drainage covers will be lifted on a regular basis to ensure the filtration system is working
effectively. The oil absorbent mats and the geotextile within the drains will be replaced/ cleaned as
required.
Should there be a significant difference in the water quality currently being discharged once the demolition
works has commenced then we will review our control measures.
Implementation of the appropriate mitigation measures above will help reduce the impact of the
construction activities to medium; or even low risk.
3. The Segregation of Construction Vehicle and Pedestrian Movements on Site
There will be separate, clearly sign-posted vehicular access and pedestrian only access gates as shown on
drawings 8185-001-P01 (Phase 1), 8185-001-P02 (Phase 2) & 8185-001-P03 (Phase 3).
The location of the site setup, including welfare units are shown on the above mentioned drawings.
Access to the site welfare and bunker bins location will be securely segregated from the main site.
The main point of pedestrian, construction staff, access will be via a pedestrian only access set into the
hoarding as indicated on the site plan.
Safe walk ways will be clearly marked and escape routes will be protected by safety fan hoardings as
shown in the drawings.
All vehicle access to the site will be under the assistance of a traffic operative. This will ensure that any
pedestrians accessing the site will be secure from the gate to the segregated route to the site
office/welfare.
Additional Project Specific Setup
• Asbestos Decontamination Unit
• Transit routes
• Asbestos Waste Disposal Skips.
Method Statement: CLASP County Hall, Nottingham
7 www.cmecdemo.com
Site Security
CMEC Demolition will erect a 2.4m designed temporary solid hoarding to form a secure boundary with site
access from Loughborough Road, agreed with the Contract Administrator.
The main point of vehicle access will be as shown on attached drawings. All access gates will be locked at
all times to prevent unauthorised access. However, it is crucial that the area be inspected for trespassers
on a regular basis by the CMEC supervisor.
Access and egress to the site will be strictly controlled and only authorised personnel and site visitors will
be allowed on site.
Visitors to site MUST first report to the site office where they MUST sign in the site log and be inducted
into the site safety rules, site visitors will be accompanied by CMEC site representative at all times.
Visiting safety officers or HSE inspectors will be accompanied by CMEC Demolition site manager or
supervisor on their tour of the works and a copy of their report recommendations will be retained in the
site office.
4. Measures for the Control of Noise, Vibration and Dust Emissions - Including
Mitigation Measures in the Event of a Complaint
Protection of the Public
Our aim is to minimize the impact of the project on adjacent neighbours & businesses and on the
environment.
A dedicated Site Manager will be appointed not only to monitor the works on site, but also to act as a point
of contact to address any local concerns or queries. Contact Details for both the Site Manager and for
Head Office will be prominently displayed both in and around the site together with details for out of hours
contact.
We aim to organize our works to cause the minimum levels of disruption to the general public and to
protect them from the affects of our activities. This is principally achieved by maintaining a secure and
protected site. This not only prevents unauthorized access to the site but also prevents dust/material
being freely blown / moved out into the public areas.
Scaffolding covered in debris netting will be installed to all elevations of the CLASP Block as shown on the
site plan.
Solid fencing will be erected to all site boundaries prior to main demolition works commencing in order to
minimise dust migration and ensure the protection of the public. Warning notices and restricted area
notices will be positioned at vantage points. The inner perimeter of the working area is to receive a further
block and mesh hoarding as necessary to demark active demolition zones or protected services.
Elevations which front public rights of way will have sentries in attendance when needed. During plant
demolition the management of pedestrians and traffic will be implemented by CMEC jointly with
Nottinghamshire County Council / City Council / Local Highways Authority.
Method Statement: CLASP County Hall, Nottingham
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Noise & Vibration
It is our policy, when dealing with noise & vibration mitigation, to control the noise at the source by
modifying the equipment itself or replacing it with a quieter model. However, this will not completely
combat the issue as the very nature of the demolition process creates noise. When it is not possible to
modify the equipment itself, the next best options are to block/absorb the sound.
All mechanical equipment intended for use on this project is of the design standard required to conform to
the Noise at Work Regulations 2005.
As a matter of policy we monitor and maintain all of our equipment to minimize the levels of noise
produced. This is an ongoing programme, undertaken irrespective of the nature of the projects on which
they are used.
In addition to this ongoing programme we also assess each project, prior to the start, to ensure that noise
mitigation practices are built into the project methodology.
At the planning consent stage it is not unusual for local authorities to place conditions which seek to
control this impact upon the local community. This may take the form of a request for a code of
construction practice which may stipulate management controls, hours of permitted working, special
restrictions relating to night-working, requests for the type of plant to be used etc. We are committed to
working closely with local authorities to ensure that these conditions are enforced and maintained
throughout the duration of the project.
The planning consent may also impose noise or vibration limits at either the closest receptors or at the site
boundary and may ask for levels to be monitored to verify that these levels are not exceeded. We actively
monitor the noise levels of our projects are agreed locations throughout the project and ensure that these
are maintained within the pre-agreed levels.
In line with this policy we can confirm that we would implement the following best practice guidance as
part of our standard procedure:
Site Planning
• Erect solid barriers to site boundary
• Plan site layout – machinery and noise causing activities are located away from sensitive receptors
wherever possible
• Identify responsible person in charge
Demolition Traffic
• All vehicles to switch off engines – no idling vehicles
Demolition Works
• Only use appropriately powered equipment(low noise emission) for the task in-hand
• Activities to be undertaken within time restrictions
• No radios/stereos on site
Site Activities
• Target methodologies that minimise noise generation
• Use barriers as suppressant where applicable
Method Statement: CLASP County Hall, Nottingham
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Noise Control
Noise levels will be monitored throughout the course of the works. It is accepted that noise cannot be
eliminated entirely, but reasonable steps will be taken to reduce any adverse effects of noise generated by
the works.
Previously works of this scale and nature have been carried out and we have assessed the results to inform
our methodology for future schemes. A table summary of these results is shown below for reference. The
nature of the works and type of structures will allow controlled sectional removal of structural elements
using remotely operated plant. The nature and capability of the plant proposed to be used is such that all
operations will be carried out with the minimum of noise and emissions generated on the site.
Noise Monitoring
A copy of the Clasp Block Demolition – County Hall Baseline Noise Assessment is enclosed overleaf.
In addition, a further noise survey will be carried out once the demolition works have commenced.
Date: December 2016
Report Reference: HW00920
Prepared By: David Collins MIOA
Clasp Block Demolition – County Hall
Baseline Noise Assessment
2
[INTENTIONALLY BLANK]
3
QUALIFICATIONS AND LIMITATIONS
The following notes should be read in conjunction with the report: -
The report has been prepared and written solely for the purpose of providing information in regard to the existing noise climate to determine a noise limit Condition. Furthermore, new information, changed practices or new legislation may necessitate revised interpretation of the report after the date of its submission.
Unless specifically referred to, the report has not addressed health and safety matters relating to noise, or liabilities relating to nuisance.
All information, comments and opinions given in the report are based on the information given or obtained.
Via East Midlands Ltd, Environmental Management and Design team, prepared this report for the sole and exclusive use of CMEC Demolition, in response to specific instructions. Other parties using the information contained in this report do so at their own risk and any duty of care to those parties is excluded.
Client CMEC Demolition
Job Title Baseline Noise Assessment
Job Number/ File Reference
HW00920
Date 8th December 2016
Signed Name Date
Prepared by
David Collins B.Eng. MSc, MIOA
Project Engineer 8th December 2016
Reviewed by
Derek Hair B.Sc. C. Env. MIEnv.Sc. MIIRSM
Principal Project Engineer 8th December 2016
Via East Midlands Ltd
Head Office: Bilsthorpe Highways Depot, Bilsthorpe Business Park, Eakring Road, Bilsthorpe, Newark NG22 8ST
Telephone: 0115 804 2100
Website: http://www.viaem.co.uk
Data Protection
Data Protection
4
[INTENTIONALLY BLANK]
5
Contents
1.0 INTRODUCTION………………………………………………………………………………………………………………………..……6
2.0 LOCATION…………..………………………………………………………………………………………………………………….….….6
3.0 NOISE SURVEY………………….….………………………………………………………………………………………………………..7
3.1 Methodology…………………..…………………………………………………………………………………………7
3.2 Weather Conditions…………………………………………………………………………………………………..7
3.3 Observations……………………………………………………………………………………………………………..8
3.4 Results……………………………………………………………………………………………………………………….8
4.0 SUMMARY………………………………………………………………………………………………………………………….……..….8
APPENDIX A (Site Photos)…….…………………………………………….…………………………………………………..…….…..9
APPENDIX B (Calibration Certificates)……………………………………………………………………………………..…………12
APPENDIX C (Glossary of Terms).………………………….………………………………………………………………..…………15
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1.0 INTRODUCTION
Via East Midlands Ltd have been commissioned by CMEC Demolition to assess existing noise levels adjacent to sensitive receptors neighbouring the County Hall site which are likely to be most impacted by noise during the demolition phase of the Clasp Block building.
Condition 9 of planning application Ref: 8/15/03017/CTY contains a noise condition worded as follows:
The total free-field noise level including noise from demolition activities on site, measured as an LAeq,1hr shall not exceed the ambient noise level (in the absence of demolition activities) by more than 5dB subject to a minimum cut-off level of 65dB LAeq,1hr when measured at the nearest receptor. In the event that the noise level specified in this condition is exceeded, the contractor shall review working methods and procedures, agree steps to mitigate the noise with the CPA, which have been designed in accordance with BS5228-1 Code of Practice for Noise and Vibration Control on Construction and Open Sites, and carry out works in accordance with the approved details. Reason: To safeguard the amenity that nearby residents could reasonably expect to enjoy in compliance
with Rushcliffe Borough Non-Statutory Replacement Local Plan Policy GP2 - Design and Amenity Criteria.
The noise condition relates to the ABC Method for determining the threshold of significant effect guidance given in BS5228-1 Code of practice for Noise and Vibration on Construction and Open Sites. This noise survey will determine the appropriate noise limit through a baseline noise survey of the pre-existing noise climate at the nearest sensitive receptors.
2.0 SITE LOCATION
Figure 1 – Location Plan
7
3.0 NOISE SURVEY
3.1 Methodology
Attended noise measurements were undertaken at the position indicated in Figure 2 below adjacent to the rear boundary with properties on Sandringham Avenue to the south of the Clasp Block (See site photos in Appendix A). This location has been chosen as it is the most sensitive location where the pre-existing ambient noise level will be significantly lower than properties along Loughborough Road which will be subject to much higher noise levels due to road traffic.
Figure 2 – Noise monitoring positions (Image from Google Earth)
Measurements were undertaken in accordance with BS7445-1 – Description and Measurement of Environmental Noise. The Sound Level Meter was mounted ~1.5m above ground level and 3.5m from the boundary fence. The noise monitoring equipment used was in accordance with the specifications given in BS61672-1 Electroacoustics – Sound Level Meters. The Sound Level Meter (SLM) was calibrated before and after use and no significant drift was observed. Copies of the calibration certificates are provided in Appendix B.
Type Serial No Last Calibrated
Casella - CEL 63X 0939675 20th Jun 2016
Table 3.1 – List of Instrumentation Used
3.2 Weather Conditions
The conditions were dry and mild with temperatures ~ 13oC and a light SE breeze. There was high cloud cover throughout the survey.
8
3.3 Observations
The dominant noise source was road traffic noise from Loughborough Road (A60). The only other notable contributions were occasional vehicle movements within the car park and occasional sirens from emergency vehicles travelling along Loughborough Road. All audible noise sources throughout the survey were considered typical of what would be expected at this location.
3.4 Results
Table 3.2 – Noise Monitoring Results
The measured LAeq,15mins varies from 54.7dB to 58.3dB with a log average level of 56.0dB. Therefore, in accordance with Condition 9 the noise limit for demolition activities is 65dB LAeq,1hr .
It is recommended that further noise surveys are undertaken in the early stages of the main demolition phase of works to measure the operational noise from demolition activities and to determine if the operations are in compliance with Condition 9 and if further mitigation measures will be required to comply with the conditioned limit.
It should be noted that the reference location for the conditioned limit is at nearby receptors which is assumed to be within the curtilage and therefore some allowance may be made for the extra distance and screening from the close boarded boundary fencing, where further noise surveys take place within car park at the southern boundary.
4.0 SUMMARY
Via’s Noise Engineer was commissioned to undertake a baseline noise survey to establish the pre-existing ambient noise level to enable setting of the noise limit in Condition 9 of application Ref: 8/15/03017/CTY
The assessment reveals existing ambient noise levels in the range 54.7dB to 58.3dB therefore, in accordance with Condition 9 the noise limit for demolition activities is 65dB LAeq,1hr.
9
APPENDIX A (Photos)
10
View looking North towards the Clasp Block Building
11
View looking south towards rear boundary of properties on Sandringham Avenue
View looking north east towards Loughborough Road (A60)
12
APPENDIX B (Calibration Certificates)
13
Data Protection
14
Data Protection
15
APPENDIX C (Glossary of Terms)
16
Glossary of Terms
Decibel Scale (dB) is a logarithmic number scale that allows a wide range of amplitude values to be compressed into a small set of number values. Numbers in decibels must be treated as logarithmic values during mathematical calculations.
‘A’ weighting dB(A) is a weighting of the audible frequencies designed to simulate the
frequency response of the human ear to noise at low to moderate sound levels. A-weighted sound levels are used to assess daily or weekly noise exposure.
LAeq,T When a noise varies over time, the LAeq is the ‘A’ weighted equivalent
continuous sound which would contain the same sound energy as the time varying sound.
Lnight Night equivalent level : Leq. A-weighted, Sound Level, measured overnight 23.00 - 0700 hours. Also known as the Night Noise Indicator.
LA10,T is the ‘A’ weighted noise level exceeded for 10% of the measurement
period (T).
LA90,T is the ‘A’ weighted noise level exceeded for 90% of the measurement
period (T). LAmax A-weighted, Maximum, Sound Level Rw a single-number quantity which characterises the airborne sound insulation
of a material or building element over a range of frequencies. (laboratory measurement).
Spectrum adaption terms: The single number rating method defined in BS EN ISO 717 uses a C and Ctr standard reference curve to determine the weighted value of airborne
sound insulation where: C is an A-weighted pink noise spectrum and Ctr is an A-weighted urban traffic noise spectrum Rw+Ctr a single number quantity which characterises the airborne sound insulation
properties of a material that has been adjusted for urban road traffic and other noises with a large component of low frequencies.
Method Statement: CLASP County Hall, Nottingham
10 www.cmecdemo.com
Environmental Site Plan – Noise Monitoring Locations
Dust & Nuisance Control
All of our works are undertaken in accordance with BS6187 Code of Practice Guidance for The control of
dust and emissions from construction and demolition. The location of all plant and machinery, specifically
crushing plant, will be positioned as far as is reasonably practicable from sensitive receptors, specifically
members of the public and adjacent residential & business properties. As a matter of course all plant and
machinery will have the engines turned off when idling.
It is recognised that the emission of dust from any building and demolition operations is largely inevitable,
particularly when dry and windy weather conditions prevail.
In assessing the need for dust control measures regard shall be paid to: -
• The nature of the works.
• Location of the building to be demolished within the site
• Nature, location and size of stockpiles and the length of time they are to be on-site
• Occurrence and scale of dust generating activities - including cutting, grinding and sawing
• Number and type of vehicles and plant required on-site
Method Statement: CLASP County Hall, Nottingham
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• Potential for dirt or mud to be made airborne through vehicle movements and weather conditions.
• Weather conditions likely to prevail during dust generating operations.
• Proximity of dust sensitive properties (residential, commercial and industrial).
• Effects on the general public and road users.
Dust control equipment is readily available on site from the commencement of works. The choice of plant
and equipment and the method of work will reflect the necessity to employ best practicable means in the
control of dust. Generally, where alternative methods exist, intrinsically dusty operations such as dry
sweeping or dry sandblasting are not utilised and alternative operations instigated.
Dust & Particulate Control
All of our works are undertaken in accordance with BS6187 Code of Practice Guidance for The control of
dust and emissions from construction and demolition. The location of all plant and machinery, specifically
crushing plant, will be positioned as far as is reasonably practicable from sensitive receptors, specifically
members of the public and adjacent residential & business properties. As a matter of course all plant and
machinery will have the engines turned off when idling.
All CMEC Plant and Machinery have engines compliant with EU emission regulations. In addition all
exhaust gases are mixed with intake air to reduce particle matter (PM) and nitrogen (NOx) emissions.
Dust Control Measures
Where adequate dust control cannot be achieved by the choice of appropriate plant, equipment and work
method common means of dust suppression involve the use of water and/or containment by screening
and enclosure.
Water Suppression
Water suppression of dust may be employed to good effect for operations such as cutting or sandblasting
of stone or concrete as well as in more general applications where dampening can prevent excessive wind
whipping of dust from stockpiles and operational areas of the site, or from demolition.
Where dust is likely to be a persistent problem a water spray system should be available from the
commencement of the works. The use of such systems can be particularly effective in operations such as
the removal of soil during construction. The need to ensure that adequate water supplies are available,
either from the mains, bowsers or other sources is a prime consideration at the planning stage.
A Dust Boss System will be in place together with water jets located on the jaws of the excavators and
directional water jets located up wind of the works to damp down the work face.
Screening and Enclosure
Finely divided materials such as sand and cement products should be stored where practicable under cover
or in sealed containers. In some circumstances screening or enclosure may be required in addition to water
suppression, and if correctly designed can have added advantages noise reduction and preventing visual
access to unauthorised personnel.
Other Methods
Although most dust problems will be controlled in practice by water suppression and/or screening, other
techniques such as local extraction to a filter unit may be an appropriate option in some circumstances.
Method Statement: CLASP County Hall, Nottingham
12 www.cmecdemo.com
Atomizing nozzles
The most effective method of dust control is the application of water to it. The best way to apply water is
through the use of spray nozzles. Nozzles provide uniform water distribution, exact spray patterns, and
precisely-defined droplet sizes. This is done primarily with full or hollow cone nozzles, or even air
atomizing nozzles.
General Site House Keeping
Both water suppression and screening have practical limitations. In warm weather, for example, water will
evaporate quickly from dusty materials leaving the site in a condition likely to result in dust emissions due
to wind whipping or vehicle movements.
As far as practical constraints will allow sources of dust such as spillage of finely divided materials should
be removed promptly using a wet cleaning technique. The importance of cleaning also applies to internal
roadways and the highway, which may become coated with dust from other operations and can become a
secondary source of dust emissions.
The creation of dust has been identified as a potential cause for concern. This has been taken into
consideration and we are to adopt a dust suppressive method of demolition. The main objectives are to
both minimize the production of dust by controlled demolition methods and suppress any dust that is
generated at source.
Given the requirement to ‘damp down’ dust generated both at the workface and during crushing
operations, consideration will be given to discharge of slurry into the adjacent live sewers. All such gully
outlets will be bundled with sand bags and also have a filter system installed in the form of ‘terram’
membrane to ensure slurry run off does not enter the drainage system.
Monitoring
Noise will be monitored in accordance with our form SF6 attached in section 9 in the Risk Assessment &
Method Statement.
Dust Prevention Methodologies
Points Covered:
• Summary of work to be carried out.
• Description of site layout and access – including proposed haul routes, location of site equipment
including supply of water for damping down, source of water (wherever possible from recycled or
grey water), drainage and enclosed areas.
• Inventory and timetable of all dust generating activities.
• List of all dust and emission control methods to be used.
• Timescale of dust producing activities.
• Details of any fuel stored on site.
• Identification of an authorised on-site responsible person. Ideally this person needs to have
knowledge of pollution control and vehicle emissions.
• Summary of monitoring protocols and agreed procedure of notification to the enforcing authority
nominated person(s).
• Details and procedure on using a site log book (to record information including exceptional
incidents causing dust episodes and action taken, identification and details of vehicle washing, site
inspections).
Method Statement: CLASP County Hall, Nottingham
13 www.cmecdemo.com
In line with this policy we can confirm that we would implement the following best practice guidance as
part of our standard procedure:
Dust Control Measures
We will ensure that all actions follow best practicable means (BPM) at all times to minimise dust and
emissions. The following identifies the activities that are most likely to produce dust and outlines
BPM. These measures have been intended to be stringent but achievable to deal with the specific air
pollution problems facing Contractors.
Pre-Start Preparation
For all sites with areas of open ground that are close to receptors, we will follow best practice to prevent
dust from being generated outside the boundary. The method statement is designed to ensure that
machinery and dust generating activities are not located close (or in the direction of prevailing wind) to
boundaries and sensitive receptors. For high risk sites, we will implement monitoring before work begins
to identify baseline dust levels. This information can be used to inform site design and layout.
Site Planning
• Plan site layout–locate dust activity away from sensitive receptors.
• Plan site layout – minimise movement of construction traffic around site.
• Erect solid barriers to site boundary
• No bonfires
• All site personnel are fully trained
• Trained and responsible manager on site during working times to maintain logbook and site
inspections.
• Put in place dust real-time monitors across site.
Communication
The management of CMEC Demolition Ltd sees communications between workers as an essential part of
effective Health, Safety and Environmental management and will endeavour to communicate to
employees their commitment to Safety, the environment and to ensure that employees are familiar with
the contents of the Company Health & Safety and Environmental Policies. Communication with employees
will be in the form of directions and statements, in writing, by way of the Policy Statement and by example.
We can confirm that we will operate timed delivery and collections. This system will allow us to ensure
that all access to site will be overseen by a member of staff on a ‘Meet and Greet’ basis. This will improve
site security and ensure that minimum disruption to all the access routes surrounding the site.
Environmental Issues
Working adjacent to a public highway
All operatives / operators are to strictly adhere to all site rules. Due care and consideration will be
afforded to all persons within the immediate area, in particular: council members of staff, members of the
public and visitors.
Working adjacent to occupied premises
Cordon off the immediate work area with solid Heras type double clipped security fencing to protect the
public from dust and debris, post warning signs to make all aware. Carry out letter drop to adjacent
Method Statement: CLASP County Hall, Nottingham
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properties advising of the works and contact numbers in case of problems. Adopt a safe system of work,
ensuring all affected by the works are informed.
Damage to adjacent properties
Adequate protection to all adjacent properties is to be in place prior to commencement of demolition
works, this includes the erection of scaffold end protection to the sensitive elevations.
Site Neighbourhood
The demolition site is adjacent to Nottinghamshire County Hall, its car park, public footpaths, main roads,
the River Trent, businesses & residential properties. We will take all necessary precautions to prevent
nuisance, disturbance, disruption etc to all of our neighbours.
Noise
It is our policy, when dealing with noise & vibration mitigation, to control the noise at the source by
modifying the equipment itself or replacing it with a quieter model. However, this will not completely
combat the issue as the very nature of the demolition process creates noise. When it is not possible to
modify the equipment itself, the next best options are to block/absorb the sound.
Full details are enclosed within Section 3.11 of the RAMS.
Nuisance
Take all necessary precautions to prevent nuisance from smoke, dust, rubbish, vermin, etc.
In general terms, the intended method of structural demolition work and loading operations on this
project will be by employing hand working and mechanical methods. The requirement for operatives to
work at heights will be avoided whenever alternate methods of working are practicable.
No fires will be allowed on site.
Protection Measures For Existing Trees
CMEC are committed to working to the British Standard BS 5837 Trees in relation to design, demolition and
construction Recommendations. Any trees identified, either by Nottinghamshire County Council or our
Site Manager, as being in potential risk of damage will be clearly marked and protected by heras fencing.
The fencing will be set at a distance from the tree trunk so as to protect the tree root ball and canopy from:
• abrasion of bark and wounds that leave wood tissue exposed
• crushing of roots be vehicles / plant equipment and / or storage of materials
• severing and removal of roots by excavation
• broken branches leaving wood tissues exposed
• poor pruning
• fire damage
• poisoning of roots from spillage or storage of fuel, oil, chemicals etc
• changes in soil levels around trees resulting in root death
• installation of impermeable surfaces
We are committed to the protection of the environment and take all reasonable steps to ensure that we
avoid damaging the existing flora of the local area.
Method Statement: CLASP County Hall, Nottingham
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5. A Scheme for the Segregation into Different Waste Streams and Recycling /
Disposal of Waste Arising from Demolition
Storage of Materials
We do not utilise large quantities of materials during the general course of our works, however, we would
undertake the following to ensure that all waste was stored safely:
General Principals
• Ensure that all waste is collected, segregated and disposed of safely and in accordance with
statutory regulations and CMEC Demolition Ltd procedures.
• Ensure that all waste containers are correctly locked and labelled in accordance with statutory and
CMEC Demolition Ltd policy requirement
• Waste/Skip containers will be placed as close as possible to the point of origin and clearly identified
for each specific type of waste
• External storage areas will be kept free of animals/rodent infestations
• The Supervisors / Manager is responsible for ensuring that the number of containers provided is
compatible with the volume of waste produced.
• All waste generated on CMEC Demolition Ltd premises whether internally or externally will be
stored in a safe and practical manner so as to ensure the minimum of offence to members of the
public and employees.
• Hazardous waste will be transferred only by an authorised contractor who holds all relevant
licenses and approvals from the enforcing authority which in this case is the Environment Agency.
Specific, Controlled, Waste Streams
Asbestos
Identification and removal of asbestos containing materials (ACM’s) will be carried out prior to the
commencement of demolition works. This is going to be undertaken by an approved specialist Asbestos
Removal contractor. However, it is possible that some ACM’s will remain undetected until the soft
strip/demolition works. Site Managers, Supervisors and Operatives are fully trained in the identification of
Asbestos and operate a pre-determined process to minimize any potential hazard and the potential delay
to the contract.
We work to the following procedure in relation to Asbestos Removal:
• Establish the type & extent of asbestos present – by client survey
• Submit relevant notifications (eg. NNLAW)
• Segregate the area
• Operatives to wear appropriate PPE
• Remove non-asbestos material
• Spray asbestos material in-situ
• Remove in whole pieces
• Wrap in designated plastic
• Sealed waste stored in secure onsite containers
• Remove to a licensed holding waste station to be bulked and taken to licensed landfill
• Complete appropriate paperwork & keep for 3 years
Gas Bottles
If any gas bottles are found on site they will be securely stored and returned to the manufacturer.
Method Statement: CLASP County Hall, Nottingham
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Paint
Any liquid paint tins/containers would be treated as ‘chemical’ waste and disposed of as follows:
Any chemicals discovered after the commencement of works on site will be quarantined in a bunded area
able to hold 110% of the chemicals if spilled. MSD’s would be obtained or analyses ordered. Dependent
upon the results disposal will be arranged by a fully licensed carrier.
Refrigeration / Air Conditioning Equipment
Refrigeration / Air conditioning units / R22 graded units and associated pipe work will be de-gassed by a
specialist contractor at the earliest opportunity. We would look to work closely with local companies who
recover any refrigerant for recycling / treatment.
Products under the Waste Electrical or Electronic Equipment Directive (WEEE)
Any products on site that are categorised as Waste Electrical or Electronic Equipment are collected and
stored in a secure area on site. They would be collected and taken to the nearest recycling site for
recycling / reprocessing.
Tyres
Tyres found on site would be collected and stored in a central area for licensed collection and
recycling/reprocessing.
Water Oil and Fuels
Water, Oils & Fuels will be sampled at the earliest opportunity and drained and disposed of through a
licensed undertaker. They would be collected and taken to the nearest OSS Group site for recycling /
reprocessing.
Mercury
Any demolition materials containing Mercury (e.g. Florescent tubes) would be collected and stored in a
coffin in a secure central location and be collected by Site Clear Solutions on a carriers round for
reprocessing and recycling.
Waste Disposal
All waste materials will be separated into types for recycling where possible. Non-ferrous metals will be
taken on an ongoing basis from the site to be recycled. No burning will take place on site.
Debris will be placed into wagons or skips for removal to an appropriate waste disposal site or recycling
station.
Wagons entering and leaving the site will be assisted by a traffic operative to prevent any inconvenience to
road users or pedestrians.
Skips and wagons will be sheeted prior to leaving site to prevent materials being windblown during transit.
The frequency of waste collections will be determined so as to avoid unnecessary accumulation of waste in
storage areas and to minimize the impact of the transport vehicles on the surrounding neighbourhood.