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«PART 3 : DISRUPTION DUE TO CONSTRUCTION 3.1 Methodology Introduction This assessment considers the potential disruption within the study area (see ...»

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A453 Widening M1 Junction 24 to A52 Nottingham

Environmental Statement Volume 1 January 2009

PART 3 : DISRUPTION DUE TO CONSTRUCTION

3.1 Methodology

Introduction

This assessment considers the potential disruption within the study area (see 3.1.6

3.1.1

below) resulting from the construction phase (as opposed to the operation of the

completed road once opened for use) of the project. In most cases, effects during

construction have been assessed as part of the specialist scheme environmental assessments of landscape and visual impact; noise and vibration; air quality;

ecology; cultural heritage; water quality; geology and soils; land use (including agriculture); pedestrians, cyclists, equestrians, and community effects; vehicle travellers; geology and soils; and road drainage and the water environment. This assessment summarises the assessment of construction impacts within these specialist reports, and broadly considers likely cumulative effects. The full detailed assessment of construction impacts is reported in the A453 Environmental Assessment Disruption due to Construction report reference A021959-REP-E-ES- 213, August 2008.

‘Disruption due to Construction’ is defined in the Design Manual for Roads and 3.1.2 Bridges (DMRB) Volume 11, Section 3, Part 3 (see below) as ‘a term which covers the effects on people and on the natural environment which can occur between the start of pre-construction works and the end of the contract maintenance period.’ These effects need not be as a result of work directly on the road project itself but may also arise from advance works for example on site investigation or by utilities, which may extend beyond the highway construction site.

This assessment takes into account potential construction impacts to local 3.1.3 residents, workers, vehicle travellers and non-motorised users (NMUs, including pedestrians, cyclists, and equestrians) arising from noise, vibration, dust and dirt, impact on views and access, and loss of amenity. The assessment also considers potential impacts on the natural environment associated with physical damage, vibration, drainage, accidental spillage, and dust generation. Compliance with current legislation, including implications for programming of the works, is also considered where appropriate.

Construction impacts are usually temporary which cease with the completion of the 3.1.4 road. For example, a temporary element of the construction process such as a haul road may entail topsoil stripping, which could cause permanent damage to archaeological remains, but when removed and restored to its original function at the end of the construction period its impact on the historic landscape might also cease. However, long-term construction impacts can arise from many of the activities that take place from the first day of site clearance.

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It is currently anticipated that construction of the scheme will take 120 weeks (29 3.1.5 months) from the end of May 2010 2009 to the end of December 2012. The urban section through Clifton, from the proposed Mill Hill Roundabout to the Farnborough Road junction, will be constructed in approximately 91 weeks (22 months) from the end of May 2010 to December 2011. The urban section will be completed approximately 7 months before the rural section is open to traffic. A summary draft construction programme is included at Appendix E. Programme dates and construction sequences given in this assessment are as accurate as they can be at the time of writing. They are intended as a guide to the nature, scope and timing of the works and may be subject to change as scheme design progresses.

Design Manual for Roads and Bridges (DMRB)

The methodology used in the assessment follows guidance in DMRB Volume 11, 3.1.6 Section 3, Part 3 Disruption due to Construction. In accordance with this guidance the study area generally includes a corridor 100m either side of the A453 Widening Scheme, varying as required on a topic-by-topic basis. Thus the assessment of construction effects on properties and other sensitive buildings (such as schools and care homes) is largely taken from the noise assessment which extends to 300m either side of the scheme (as reported in Section 2 Part 7 Traffic Noise and Vibration). Effects on cultural heritage resources is largely taken from the specialist cultural heritage assessment (as reported in Section 2 Part 2 Cultural Heritage) in which the study area extends to those archaeological remains, historic buildings and historic landscapes which are likely to be affected. Similarly, effects of construction on ecology and nature conservation is largely derived from that specialist assessment (as reported in Section 2 Part 4 Ecology and Nature Conservation) which includes a detailed study area within 200m of the route but extends to 500m where particular features lie further away from the road.

Consideration during scheme design of the likely amounts of surplus material, 3.1.7 taking into account where the road will be in cutting (i.e. below the level of the surrounding land) or on embankment (i.e. above the surrounding land) has enabled a broad assessment to be made of various route alternatives (as discussed in the ES Section 3 Part 2). This, together with consideration by the contractor, Laing O’Rourke of a methodology for construction (taking into account, for example, traffic management) has informed the engineering design of the proposed scheme.





The following construction operations and other considerations which could have a 3.1.8 particularly significant impact have been included in the assessment of disruption

due to construction:

–  –  –

Significance criteria are as defined in each relevant specialist environmental impact 3.1.9 assessment. All have been assessed for their impact on the operational phase and where appropriate the construction phase in the individual topic sections. The disruption due to construction aspect of each topic is summarised in this assessment. An assessment score or comment as to the significance of impact during construction is given for each topic as appropriate, plus a statement as to whether any impact is likely to continue into the long term as a direct consequence of construction activities. Appropriate weighting is given according to whether impacts are temporary or long-term.

3.2 Key Guidance and Legislation The following legislation and guidance is of relevance to the amount and disposal of 3.2.1

waste from the site:

–  –  –

3.3 Consultations The Environmental Statement Scoping Report was issued to Statutory 3.3.1 Environmental Consultees and local authorities for comment on 27th October 2006.

In terms of construction aspects, comments were received from Natural England, English Heritage, the Environment Agency (EA) and Nottinghamshire County Council.

Environmental Health officers of Nottinghamshire County Council, Leicestershire 3.3.2 County Council, Nottingham City Council, Rushcliffe Borough Council and North West Leicestershire District Council have been consulted.

The EA is a key consultee with regard to waste management licensing issues e.g.

3.3.3 registration of exemptions for storage / treatment / re-use of any waste materials, such as construction / demolition waste and soils, arising from the works. The EA has been consulted during the initial design and assessment processes.

Construction impacts were discussed in a series of ecological workshops held 3.3.4 between September 2006 and September 2007. Attendees were AMScott, the Environment Agency, Natural England, Leicestershire County Council, Nottinghamshire County Council, Nottinghamshire Wildlife Trust and E.ON.

Consultation and communication during construction is important in order to 3.3.5 minimise disruption and to keep all interested parties informed of the on-going works. The Contractor’s Construction Environmental Management Plan (CEMP) will include arrangements for consultation with statutory authorities, non-statutory authorities, interest groups and the public to ensure the methods and controls for safeguarding the environment and mitigating the effects of the scheme and its construction are carried out in accordance with the CEMP.

Listed below are some of the ways that we intend to maintain good communication:

3.3.6

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3.4 Construction Activities Pre-Construction Activities Prior to the onset of the main scheme construction works, a range of activities 3.4.1 would be required in order to minimise the operational constraints, which are imposed mainly by the area's ecology/archaeology. These activities are detailed in

the individual environmental assessment reports and include the following:

–  –  –

The main activities involved during scheme construction, which have the potential to 3.4.2

cause adverse environmental impacts, would be as follows:

–  –  –

Earthworks The scheme would involve substantial earthworks in order to form the cuttings and 3.4.3 embankments. Where possible, excavated material would be reused in embankments and landscaping areas, minimising both the environmental impact and the cost of the Scheme. Where appropriate or required, material would be modified to maximise its suitability for inclusion in the completed scheme.

Topsoils would be stripped using an excavator and transported by road haulage 3.4.4 wagon or dump truck to temporary soil storage locations, where it would be stored for the shortest possible period, typically between 6 and 18 months, at a height of no more than 3m (typically 2m but this may need to be increased in confined locations). Proposed soil storage areas are shown on Drawing No.

21959/E/ES/2.3.1: Areas Required during Construction (located in the ES Volume 2 Figures).

The earthworks operation would be undertaken within the site construction area 3.4.5 using tracked 15 to 45 tonne excavators, articulated dump trucks 25 to 45 tonne, tracked dozers D4 to D8-type machines or similar, rollers or compactors. The majority of lorry movements relating to earthworks will be contained within the site, and 25 tonne road wagons would be used on the public highway. On completion of the areas of embankment construction and backfilling, the balance of the excavated material would be used to form the landscape fill areas to the designed profile.

These areas would then be covered with topsoil and planted according to the specified landscape design.

116

SECTION 2 : ENVIRONMENTAL TOPICS

Part 3 : Disruption Due to Construction A453 Widening M1 Junction 24 to A52 Nottingham Environmental Statement Volume 1 January 2009 In 2010 approximately 148,000 m3 of material will be moved in 60 days (310 3.4.6 wagons/day) by dump truck within the off-line section; and approximately 145,000 m3 of material will be moved in 60 days (302 wagons/day) by road haulage wagon elsewhere. In 2011 approximately 325,000 m3 of material will be moved in 140 days (290 wagons/day) by road haulage wagon. In 2012 approximately 37,000 m3 of material will be moved in 100 days (47 wagons/day). All of the suitable material removed from the cuttings would be used within the works. The only export of material to a local licensed waste disposal site would be unsuitable fill estimated at 500 m3. Approximately 42,000 m3 of granular materials (e.g. roadstone, freedraining sands and gravels), would need to be imported as they are not available within the works area. These would be sourced locally to minimise haulage costs, haulage impact and the scheme’s carbon footprint.

The bulk earthworks required for the scheme are met within the proposed 3.4.7 boundary. This is a major benefit as it would greatly reduce the potential impact of the earthworks operation, and negate the requirement for the significant import of substantial quantities of bulk fill material to the site. The programme also aims to minimise any double-handling of material. Not only would this be economically beneficial, but it would also reduce unnecessary plant movements and limit the area of land required for temporary storage. All of the surplus excavated material will be used as general fill, in landscaping and / or in areas to be re-graded. All topsoil excavated will be reused on site in landscape areas and / or in areas to be returned to agriculture.

During the road construction periods there will also be lorry movements associated 3.4.8 with roadstone, drainage and surfacing materials. These on average will be 25/day but ranging from 15/day to 40/day.

Structures Preliminary designs for the bridges, underpasses and junctions have been 3.4.9 prepared, however these would be finalised during the detailed design stage (which would be undertaken after confirmation of the Orders). These structures would be reinvestigated and subject to "value engineering" exercises, resulting in the preparation of the detailed design.

Post-Construction 3.4.10 Following completion of the construction works, there may be a small amount of completion work on landscaping and work on the correction of any defects that become apparent. However, it is expected that the level of activity would decrease quickly following Scheme opening.

Subsequent Maintenance Works 3.4.11 Under the Early Contractor Involvement (ECI) commission (subject to permission to proceed) and following completion of scheme construction, the Contractor would be responsible for the maintenance of environmental and landscape features for a

–  –  –

period of 5 years (i.e. to 2017). Maintenance activities, which would include the following, would be carried out in accordance with good site practice, and as such

should cause only slight, temporary environmental impacts:

–  –  –



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