Code of Construction Practice - Planning Inspectorate... · Infrastructure Planning (Applications: Prescribed Forms and Procedure) ... CoCP Code of Construction Practice – Document

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Code of Construction Practice The Yorkshire and Humber (CCS Cross Country Pipeline) Development Consent Order Under Regulation 5(2)(q) of the Infrastructure Planning (Applications: Prescribed Forms and Procedure) Regulations 2009

June 2014 Application Reference: EN070001

Other Documents Volume 7: Code of Construction Practice Ref 7.5

Code of Construction Practice i

The Yorkshire and Humber CCS Cross Country Pipeline

Contents

Abbreviations iv

1 Introduction 1 1.1 General 1 1.2 The Project 1 1.3 Purpose of this Document 3 1.4 Construction Sequence 4

Mobilisation Works 4 Barmston Pumping Station Construction 5 Pipeline Construction 5 Above Ground Installation Construction 6 Landfall Construction 7 Demobilisation of construction site 8

1.5 Indicative Construction Programme 8

2 General Principles 10 2.1 Design and Construction Principles 10 2.2 Environmental Principles 10 2.3 Health and Safety Principles 11 2.4 Community Liaison 11

3 General Site Operations 13 3.1 Working hours 13 3.2 Construction Site Layout and Good Housekeeping 13 3.3 Fencing 14 3.4 Lighting and Visual Intrusion 14 3.5 Security 15 3.6 Welfare 15 3.7 Temporary living Accommodation 15 3.8 Clearance of Site on Completion 15

4 Health and Safety 17 4.1 Regulatory Overview 17 4.2 Emergency Contacts and Procedures 18 4.3 Unexploded Ordnance 18 4.4 Radiation Emissions 18

5 Environmental Management 19 5.1 Environmental Management Plan 19

6 Public Access and Transport Management 21 6.1 Objective 21


Code of Construction Practice ii


6.2 Traffic Management Plan 21 6.3 Road Cleanliness 22 6.4 Highway Reinstatement 23 6.5 Public Rights of Way 23 6.6 Kiplingcotes Derby 24

7 Noise and Vibration 25 7.1 Objective 25 7.2 Noise Emissions 25 7.3 Control Measures 25

Vibration 27 7.4 Monitoring 27

8 Air Quality 28 8.1 Objective 28 8.2 Air Emissions 28 8.3 Control Measures 28

9 Protection of Water Quality 30 9.1 Objective 30 9.2 Water Management 30

Water Management Plan 31 Watercourses 32 Private Water Supplies 33

9.3 Control Measures 33 Pollution Prevention and Control Plan 33 Environmental Emergency and Contingency Procedures 35 Other Controls 36

10 Ecology 41 10.1 Objective 41 10.2 Ecology 41 10.3 Control Measures 41

Scheme of Ecological Mitigation and Reinstatement 42 Other Control Measures 42

11 Archaeology and Cultural Heritage 60 11.1 Objective 60 11.2 Control Measures 60

12 Landscape and Visual Impact 62 12.1 Objective 62 12.2 Landscape 62 12.3 Control Measures 63


Code of Construction Practice iii


Landscape Schemes 63 Camblesforth Multi-junction 64 Block Valves and PIG Trap 65 Barmston Pumping Station 65 Other Control Measures 66

13 Disposal of Waste and Contaminated Materials 68 13.1 Objective 68 13.2 Waste Management 68 13.3 Contaminated Land 70 13.4 Control Measures 71

14 Agriculture Land Use and Soils 73 14.1 Objective 73 14.2 Agriculture and Land Use 73 14.3 Soils 74

15 Protection of Coastal Environment 76 15.1 Objective 76 15.2 Landfall 76 15.3 Control Measures 76

16 Conclusions 78 16.1 Code of Construction Practice 78

17 References 79

Figures 2.1 – 2.10 Environmental Commitments 81


Code of Construction Practice iv


Abbreviations

APFP Infrastructure Planning (Applications: Prescribed Forms and Procedure)

BS British Standard

BSI British Standards Institution

CCS Carbon Capture and Storage

CDM Regulations Construction (Design and Management) Regulations 2007

CDM-Cr Construction, Design and Management – Client's Representative

CIRIA Construction Industry Research and Information Association

CoCP Code of Construction Practice – Document 7.5

COSHH Control of Substances Hazardous to Health Regulations

DCO Development Consent Order

EA Environment Agency

EMP Environmental Management Plan

ERYC East Riding of Yorkshire Council

ES Environmental Statement– Document Volume 6

EU European Union

GCN Great Crested Newt

H&S Health & Safety

IDB Internal Drainage Board

JNCC Joint Nature Conservation Committee

JNAPC Joint Nautical Archaeology Policy Committee

km Kilometre

kV Kilo Volt

LLFA Lead Local Flood Authority

LWS Local Wildlife Site

m Metre

MARPOL MARPOL 73/78 is an international convention for the prevention of pollution from ships.

mm Millimetre


Code of Construction Practice v


MMO Marine Management Organisation

mt Million tonnes

National Grid National Grid Carbon Limited

NE-IFCA North Eastern Inshore Fisheries and Conservation Authority

NRSWA New Roads and Street Works Act

NSIP Nationally Significant Infrastructure Project

NYCC North Yorkshire County Council

PPG Environment Agency Pollution Prevention Guidelines

PIG Pipeline Internal Gauge / Pipeline Inspection Gauge

PINS Planning Inspectorate

PM10 Particulate matter up to 10 micrometres in size

Project Yorkshire and Humber CCS Cross Country Pipeline Project

SINC Site of Importance for Nature Conservation

SSSI Site of Special Scientific Interest

TMP Traffic Management Plan

WAC Waste Acceptance Criteria

WMP Waste Management Plan

YWT Yorkshire Wildlife Trust


Code of Construction Practice 1


1.1 GENERAL

1.1.1 This document relates to an application by National Grid Carbon Limited (referred to in this document as “National Grid”) under the Planning Act 2008 for the Yorkshire and Humber CCS Cross Country Pipeline Development Consent Order (the "Application"). This would grant powers to construct, operate and maintain a cross country pipeline and associated infrastructure for the transportation of Carbon Dioxide in the County of North Yorkshire and the District of Selby and in the East Riding of Yorkshire (the Onshore Scheme).

1.2 THE PROJECT

1.2.1 The Project is a Carbon Dioxide transportation and storage system to support the provision of CCS technology in the Yorkshire and Humber Region. The Project, in its entirety, is known as The Yorkshire and Humber CCS Transportation and Storage Project (“the Project”). It will comprise the construction of a Cross Country Pipeline and sub-sea pipeline for transporting Carbon Dioxide captured from power projects in the region to a permanent geological storage site beneath the North Sea. The Project includes both onshore and offshore elements which are subject to separate consenting regimes (the “Onshore Scheme” and the “Offshore Scheme”).

1.2.2 The onshore elements of the Project are collectively termed the Yorkshire and Humber CCS Cross Country Pipeline (shortened to the “Onshore Scheme”) and are proposed to comprise the construction of a buried welded steel Cross Country Pipeline and associated infrastructure including Pipeline Internal Gauge (PIG) Traps, a multi-junction, three block valves a pumping station (collectively termed “Above Ground Installations” or “AGIs”) and any necessary interconnecting local pipelines and associated works. These are illustrated in the high level schematic below (Figure 1).

1.2.3 As the length of the proposed Cross Country Pipeline will exceed 16.093km it constitutes a nationally significant infrastructure project (“NSIP”) pursuant to the Planning Act 2008. This requires an application to be made to the Planning Inspectorate (“PINS”) for a Development Consent Order (“DCO”).

1 Introduction




1.2.4 The Cross Country Pipeline will have an external diameter of up to 610mm and will be sized to accommodate up to 17 million tonnes (mt) of Carbon Dioxide emissions per year. The multi-junction will enable the connection of multiple pipelines from regional Carbon Dioxide emitters to the Project. At present one installation for the capture of Carbon Dioxide streams, the White Rose CCS Project adjacent to Drax Power Station at Selby, being promoted by Capture Power Limited, will connect into the Cross Country Pipeline. An interconnecting pipeline between the White Rose CCS Project and the multi-junction will form part of the DCO application for the Onshore Scheme.

1.2.5 Pipeline Internal Gauge (PIG) Traps will be sited at the start and end of each pipeline to launch PIGs. These facilities are required to support the periodic inspection of pipelines as part of National Grid’s planned pipeline inspection and maintenance programme. Block Valves will be required at regular intervals along the length of the pipeline to allow sections of the pipeline to be isolated for safety or maintenance, and a pumping station is to be constructed near to the coast to re-pressurise the Carbon Dioxide before it is transported offshore.

Figure 1 Schematic of the Onshore Scheme




1.2.6 The offshore elements of the Project are collectively termed the Yorkshire and Humber CCS Sub-sea Pipeline and Geological Storage Site (shortened to the “offshore Scheme”) and are proposed to comprise the construction of a 90km sub-sea pipeline to a geological storage site. These are subject to a separate consenting regime requiring authorisation by the Petroleum Act 1998 and the Energy Act 2008 respectively.

1.2.7 The sub-sea pipeline will have an external diameter of up to 610mm and will be sized to accommodate up to 17mt Carbon Dioxide emissions per year. The geological storage site will comprise the permanent storage of captured Carbon Dioxide in a saline aquifer located approximately 1000m below the seabed. National Grid has secured an agreement to lease area 5/42 in the southern North Sea from the Crown Estate for the purpose of geological storage of Carbon Dioxide. The capacity of the storage site is expected to accommodate at least 200mt of captured Carbon Dioxide. Once this site has reached capacity further storage sites would be identified and utilised.

1.2.8 The Onshore and Offshore Schemes will be joined at the Mean Low Water Mark using appropriate landfall techniques; this is also the juncture of the onshore and offshore consenting regimes.

1.3 PURPOSE OF THIS DOCUMENT

1.3.1 This Code of Construction Practice (CoCP) describes the minimum standards to be adopted by National Grid, for ensuring that construction activities for the Onshore Scheme are carried out in accordance with current legislation and best practice for minimising the adverse effects of construction on the environment and the local community.

1.3.2 In order to achieve this, National Grid and its contractors will adopt the objectives and control measures set out in this CoCP when under taking the construction of the Onshore Scheme.

1.3.3 This document forms part of a suite of application documents, and should be read alongside and be informed by those documents (see Document References in brackets).

1.3.4 The Onshore Scheme would be subject to specific requirements to be discharged by the relevant planning authority, as set out in the DCO. Requirement 14 of the draft DCO (Document 3.1) requires that construction works must be carried out in accordance with this CoCP.




1.3.5 The CoCP is submitted for approval by the Secretary of State. National Grid will ensure that the Onshore Scheme construction works are carried out in accordance with the CoCP.

1.3.6 National Grid’s Contractors will be responsible for ensuring that construction activities comply with this CoCP, and will be required to regularly report performance and compliance with this CoCP to National Grid.

1.4 CONSTRUCTION SEQUENCE

1.4.1 A description of the construction works is provided in the Construction Report (Document 7.6). The following section provides a summary of the sequence of construction associated with each element of the Onshore Scheme.

1.4.2 Following the receipt of the DCO and prior to the commencement of construction, National Grid will progress the following:

• Discharge of requirements specified in the DCO; • Finalise landowner / tenant agreements; • Finalise utilities consents and permits for crossing services; • Finalise utilities agreements for connections at AGIs; • Finalise infrastructure crossings agreements/consents (Highways

Authorities (Roads & Public Rights of Way) / Network Rail/ Canal Trusts/ Internal Drainage Boards);

• Obtaining Licences from Natural England to deal with protected species;

• Obtaining other consents such as the Environmental Permits from the Environment Agency;

• Finalise Engineering and Construction Drawings and Specifications; • Building Regulation Approval where necessary; • Driffield – Bridlington High Voltage Overhead Power Line Electrical

Connection Agreement for Barmston Pumping Station (Northern Powergrid).

1.4.3 These activities would be carried out during the detailed design phase (see indicative programme in Section 1.5 below).

Mobilisation Works

1.4.4 Prior to construction commencing the following enabling works will be carried out including:

• Mobilisation of resources;




• Communication with local Stakeholders; • Highway network condition survey; • Establishment of Temporary Construction Compounds / Pipe Storage

Yards; • Installation of temporary accesses and signing for temporary

construction compounds; • Transportation of Pipe Sections to Pipe Storage Yards.

Barmston Pumping Station Construction

1.4.5 Construction work at the pumping station will include:

• Site preparation (levelling, temporary access, signing and laydown areas);

• Service connections (water supply works, foul drainage provision, surface water management system and culverting);

• Ground works/ below ground pipework (piping bridles and by-passes, insulation joints, valves), tanks and troughs;

• Civils (foundations for buildings, concrete blocks to support pipework, building structures, security fencing, ducts);

• Earthworks (gabion walls, landform profiling); • Pump and Variable Speed Drive installation; • Above ground pipework (PIG Traps, meters, filtration and vents); • Electrical and instrumentation installation (instrumentation, electrical

cables, earthing protection, satellite dish, control and telecommunications cables, utility metering etc);

• Finishing (vehicular access, turning areas and pedestrian access surfacing);

• Permanent access road from public highway; • Post and rail fencing, landscape works and planting demobilisation

and reinstatement of temporary works areas; • Testing and commissioning.

Pipeline Construction

1.4.6 Pipeline construction is undertaken on a “production line” basis. Crews dedicated to a particular task start at one end of the pipeline route and work towards the other end. The detailed make-up of the work force is yet to be determined but in general terms the following sequence of crews will be employed to construct the pipeline including:

• Survey (to peg the route and locate and mark existing services);




• Working width preparation / installation of temporary site access points and signing;

• Fencing; • Pre-construction drainage; • Topsoil strip; • Archaeological surveys and watching brief; • Levelling and benching; • Breaking up of rock (if encountered); • Pipe stringing (lay out the pipe along the working width); • Field bending (i.e. pipes bent to angles previously determined by the

bending engineer); • Welding and inspection (end preparation, front end welding, back end

welding, fabrication welding); • Non-destructive weld testing; • Joint coating; • Dewatering (well point de-watering, pumping and discharge); • Trench excavation; • Lower and lay; • Backfill (sand padding); • Pipeline tie-ins; • Re-grading of soil; • Post-construction drainage; • Reinstatement (cross-ripping of subsoil and reinstatement of topsoil,

boundary walls, hedges and fences); • Hydrostatic testing and final tie-ins (swab and gauge pipeline test

sections, fill, test and dewater, reinstate test locations); and • Commissioning (final gauge plate and calliper surveys, drying and

commissioning).

1.4.7 In addition, special crews will be established for operations such as crossings (e.g. road, rail, river, canal). These activities are normally carried out independently of the normal sequence of works.

Above Ground Installation Construction

1.4.8 The following construction sequence applies to all above ground installations and will include:

• Site preparation / temporary access and laydown areas; • Ground works/ below ground pipework (piping bridles and by-passes,

insulation joints, valves);




• Civils (concrete base for instrument building, concrete blocks to support pipework, ducting);

• Above ground pipework (actuators and thermal relief valves); • Instrument building and associated photovoltaic cells and turbine; • Electrical and instrumentation installation (instrumentation, electrical

cables, earthing protection, satellite dish, control and telecommunications cables, utility metering);

• Service connections (electricity and telecommunications); • Cathodic protection; • Finishing (vehicular access, turning areas and pedestrian access

surfacing, security fencing); • Permanent access road from public highway; • Post and rail fencing, landscape works and planting; • Demobilisation and reinstatement of temporary works areas; • Testing and commissioning.

Landfall Construction

1.4.9 Potential construction methods being considered at the landfall to install the pipeline under the cliffs include: tunnel (including direct pipe) and horizontal directional drill. The following construction sequence is based on a tunnel with HDD specific operations shown in italics and will include:

• Mobilise to Site & Establish Compounds; • Install Drive Shaft / set up HDD rig (install anchor blocks); • Install and Commission Dewatering System; • Excavate Drive Shaft and Install Support Frames & Base; • Construct headwall for launch; • Set Up and Install Tunnel Boring Machine; • Install Reception Shaft; • Drive Tunnel to Reception / Install HDD Pilot Bore / Ream bore; • Survey Tunnel; • Install Pipeline Rollers and Brackets (where required); • Install Pipeline to tie-in pit; • Install cofferdam; • Dredge channel; • Pull in offshore pipeline to tie-in pit; • Tie-in weld; • Test Pipeline; • Backfill Tunnel, shafts and excavations; • Reinstatement;




• Demobilise.

Demobilisation of construction site

1.4.10 On completion of construction the temporary construction compounds will be demobilised and temporary working areas will be reinstated including:

• Removal of temporary access tracks, fencing and reinstatement of fields;

• Reinstatement of verges & hedgerows; • Removal of temporary access points and signing; • Removal of welfare cabins, security huts, work compounds and

storage areas; • Survey of highway network condition, assessment and remedial

action at National Grid’s cost; • Decommission construction compounds and storage areas including

project office facilities.

1.5 INDICATIVE CONSTRUCTION PROGRAMME

1.5.1 The Construction Contract Strategy has yet to be finalised and this will influence the construction programme. A high level summary of the major activities associated with the construction phase of the Onshore Scheme and indicative programme is presented below:

Year 1 Year 2 Year 3 Year 4 Detailed design

Pipeline construction

AGI construction

Pumping Station construction

Landfall construction

Commissioning

1.5.2 This is based on the onshore pipeline being constructed by two contractors, constructing in the same year, alternatively one pipeline contractor may construct the onshore pipeline over two years.

1.5.3 The main construction season will be April to September inclusive. Some works will take place outside this period such as hedge removal which needs to be carried out before the end of February to avoid the bird nesting




season. Barmston Pumping Station will require a two year build including works over winter.




2.0.1 The general management of the site is important in controlling environmental impacts from construction activities. This chapter sets out the requirements for the major stages of the Onshore Scheme with respect to working hours, general site layout and appearance, and security.

2.1 DESIGN AND CONSTRUCTION PRINCIPLES

2.1.1 The Onshore Scheme will be constructed in an environmentally sensitive and safe manner.

2.1.2 The pipelines and above ground installations will be designed, constructed and operated and maintained to meet the safety and design parameters set out in the Safety Statement (Document 6.4.7).

2.1.3 Pipeline marker posts will be installed to indicate the route for future monitoring by air and line-walking. Boundary marker posts will be supplemented by aerial marker posts. Marker posts will be located at boundaries and other strategic locations for example main rivers, road and rail crossings so that the pipeline position is clear to anyone carrying out works in the vicinity.

2.2 ENVIRONMENTAL PRINCIPLES

2.2.1 National Grid works and adheres to Environmental Management System standard ISO 14001, published by the International Organisation of Standardisation, and requires that its Contractors operate an Environmental Management System certificated to ISO 14001. The pipeline will be constructed in accordance with the principles of ISO14001 (see Section 5).

2.2.2 During the tender selection process for appointing the main construction contractors, National Grid will review the environmental performance of the tenderers. A company tendering for the main construction contracts will have to provide evidence of an environmental management system that is consistent with the requirements of National Grid’s tendering process.

2.2.3 For the purposes of this CoCP, all Main Works Contractors who will have direct responsibility to National Grid for the implementation and management of the construction process are referred to as ‘the Contractor’.

2 General Principles




2.3 HEALTH AND SAFETY PRINCIPLES

2.3.1 As a company National Grid has a very strong safety culture. A single safety policy is applied across natural gas pipelines, electricity cables and carbon dioxide pipelines. National Grid is committed to ensuring the health, safety and welfare of its employees and those who may be affected by the conduct of its undertakings. National Grid will apply appropriate industry standards for health and safety and will seek continuous improvement in safety performance (see Section 4 Health and Safety).

2.4 COMMUNITY LIAISON

2.4.1 National Grid is committed to ensuring that the local community is provided with appropriate information about construction activities. Local residents will be notified of planned works that require 24 hour operations. Information about the Onshore Scheme will be available to members of the public via National Grid's project website, including information on the construction programme and estimated duration of the works, together with the email address and the helpline number for use by members of the public who wish to request information or make an enquiry related to construction activities.

2.4.2 Should any construction-related complaints be received, they will be logged by the Contractor in a complaints register, together with a record of the responses given and actions taken. The register will be provided to National Grid at regular intervals for review.

2.4.3 Contractors will be responsible for the production and implementation of a Traffic Management Plan. Local Parish Councils affected by the works will be contacted by National Grid to inform them about the scope of the construction works, the intended site access routes, the timing and duration of planned road closures and the agreed diversion routes. Contact details for the Public Relations team will be provided in writing to the Parish Councils, who they can contact in the event that they have any concerns or difficulties. The use of newspaper advertisements will also be considered if appropriate for construction traffic issues.

2.4.4 Measures will include:

• Issue a letter to residents in advance of works to all properties within 250 metres of the site.

• Implement a dedicated contact number for local residents to phone should they have any queries or complaints.

• Operate a complaints procedure ensuring that complaints or queries raised by residents are promptly addressed.




• Keep a log of complaints, along with the actions taken to resolve them.

• Set up and maintain scheme specific website to keep local communities informed about the progress of the scheme and any specific operations to be aware of.

• Implement a stakeholder communications plan that includes community engagement before and during work on site. (See Section 8 Air Quality).




3.1 WORKING HOURS

3.1.1 Typical construction working hours will be between the hours of 07.00 to 19.00 hrs Monday to Saturday. The requirement to work on Sunday or bank holidays cannot be excluded, although it will not be usual, on these days the working hours will be 07.00 to 17.00 hrs. Works will be carried out in accordance with Requirement 13 of the draft DCO (Document 3.1).

3.1.2 Due to the intensive time scale of the pipeline construction programme (April – end September) any delay through unforeseen ground conditions, weather events etc have to be retrieved and Sunday/bank holiday working may be required to allow production to catch up. In addition, the nature of some of the activities mean that these times and days may need to be extended occasionally for particular activities. For example activities that require continuous 24 hour operations such as tunnelling, horizontal directional drilling and testing activities would require night-time working.

3.1.3 In order to ease congestion on the public road network and to meet the requirements of the police, deliveries and abnormal loads may be required outside of normal working hours.

3.1.4 The programme constraints aim to avoid pipeline construction during the winter months. Working with heavy machinery in waterlogged ground conditions can damage the soil structure which from National Grid’s extensive experience can be more onerous to reinstate. Works to construct the above ground installations (where land will not be reinstated to its former use) and in particular the pumping station at Barmston would extend into the winter months.

3.2 CONSTRUCTION SITE LAYOUT AND GOOD HOUSEKEEPING

3.2.1 Good housekeeping practice will be applied at all times using the following principles:

• All temporary work areas will be delineated by demarcation fencing or stock-proof fencing or herras fencing (or similar), as appropriate.

• Safety signage and boundary fences, where required, will be regularly inspected, repaired and replaced as necessary.

• Working areas will be kept in a tidy condition.

3 General Site Operations




• Office, stores and workshop areas will be non-smoking. Specific areas within the temporary construction compounds will be designated as smoking areas and will be equipped with containers for smoking waste.

• Practicable measures will be taken to minimise the risk of fire and the Contractor will comply with the requirements of the local fire authority.

• Waste will be removed at frequent intervals. • All waste will be identified, quantified and where practicable

appropriately segregated. • Site waste susceptible to spreading by wind or liable to cause litter

will be stored in secure containers. • Soil that is to be re-used will be stored on site. • Soil moved, handled or stored on site will be treated in accordance

with Defra’s Construction Code of Practice for the Sustainable Use of Soils on Construction Sites (2009) or any replacement thereof.

3.2.2 All working areas will be inspected as required using a site audit programme and a written report on compliance will be provided to the Client’s Construction Project Manager/ Client’s CDM Representative (CDM-Cr) on a monthly basis.

3.3 FENCING

3.3.1 Where necessary, working areas will be appropriately fenced off from members of the public and to prevent animals from straying onto a working area. National Grid will ensure, as far as reasonably practicable, that the visual intrusion of the construction site on the local community, local residents and users of local amenities is contained and limited.

3.3.2 Temporary fencing will be regularly inspected and maintained and will be removed as soon as reasonably practicable after completion of the works.

3.4 LIGHTING AND VISUAL INTRUSION

3.4.1 At construction compounds and specific locations where night working is required or in poor light conditions during normal working hours, portable lighting units will be used where necessary to ensure safe working and/or site security.

3.4.2 Site or welfare cabins, equipment and lighting will be sited so as to minimise visual intrusion insofar as is consistent with the safe and efficient operation of the work site. Site lighting will be positioned and directed to minimise glare and nuisance to residents, walkers and to minimise distractions or confusion to passing drivers on railways or adjoining public highways. Implementation will comply with the Institute of Lighting




Engineers Guidance Notes for the Reduction of Obtrusive Light (2005) in so far as it is reasonably practicable and applicable to construction works.

3.4.3 When lighting is necessary, appropriate lighting and luminaries will be used to minimise the impact of lighting on ecological resources, including nocturnal species. Lighting will be designed to minimise spillage into surrounding habitats, such as sensitive watercourses, to avoid disturbance to wildlife.

3.5 SECURITY

3.5.1 The Contractor will ensure that temporary construction compounds including offices are adequately secured to protect the public and prevent unauthorised entry to or exit from the site. Access to the temporary construction compounds will be limited to specified entry points only and personnel entries/exits will be recorded and monitored for both security and health and safety purposes.

3.5.2 Security units will patrol the pipeline works.

3.6 WELFARE

3.6.1 Welfare cabins and toilets will be provided on site for the use of construction workers.

3.6.2 Workers’ Safety Information Sheets and Control of Substances Hazardous to Health (COSHH) safety data sheets will be prominently displayed in welfare cabins covering work practices.

3.6.3 Where portable generators are used, industry best practice will be followed to minimise noise and pollution from such generators.

3.7 TEMPORARY LIVING ACCOMMODATION

3.7.1 No living accommodation will be provided within any construction working area.

3.8 CLEARANCE OF SITE ON COMPLETION

3.8.1 The Contractor will clear and clean all temporary working areas and accesses as work proceeds and when they are no longer required for the works.

3.8.2 On completion of the construction works, plant, temporary cabins and vehicles no longer authorised will be removed from the site. All land, including highways and public rights of way crossed by the works or other




land temporarily occupied will be made good to the satisfaction of landowners and/or the relevant highways authority.




4.1 REGULATORY OVERVIEW

4.1.1 National Grid operates its activities in conformance with the Health and Safety at Work Act 1974 and other health and safety legislation. Site specific risk assessments and method statements are undertaken in accordance with the applicable health and safety legislation prior to the commencement of site activities to identify any potential risks, assess their likelihood and significance, and to identify mitigation measures to be implemented to ensure the safety of the general public and site workers.

4.1.2 National Grid will ensure that adequate arrangements are in place for the discharge of its duties under the Construction (Design and Management) Regulations (CDM Regulations).

4.1.3 The CDM Regulations will be followed and require information about or affecting the site to be collected prior to the commencement of construction. This will involve approaching the relevant authorities and stakeholders. Relevant site information gained from these searches will be used by the Contractor to update the relevant parts of the health and safety plan, construction environmental management plan and the project risk log, as appropriate.

4.1.4 The Contractors will also be responsible for the production and implementation of the Project Health and Safety Plan in accordance with CDM Regulations. This will set out how health and safety matters on the site are to be managed and how risks are to be identified and managed in accordance with current best practice and legal requirements. The Health and Safety Plan will focus on the health and safety of construction workers; however, the Contractors will also be responsible for ensuring the health and safety of any visitors to the site and of the general public in the vicinity of construction activities.

4.1.5 All staff working on site will be required to have completed Cross Country Pipelines Health Safety & Environment training (known as the Safety Passport) as well as project specific induction training. Site specific risk assessments will be carried out. Compliance teams will carry out audits throughout the project.

4 Health and Safety




4.1.6 The health and safety performance of the contractor will be the subject of regular audits, inspections and reviews by National Grid as well as internal audits carried out by the Contractors. The audits will cover all aspect of the Project and will be based on the construction phase Health and Safety Plan.

4.2 EMERGENCY CONTACTS AND PROCEDURES

4.2.1 A project emergency plan will be developed by the Contractor for the Project, providing telephone contact details for the emergency services, local authorities, and maps showing the location of local hospitals. The project emergency plan will be on display at site offices and forms part of the site induction and work packs.

4.3 UNEXPLODED ORDNANCE

4.3.1 Desk top studies will be undertaken regarding the potential risk of the presence of unexploded ordnance. Should unexploded ordnance be discovered on site the site emergency procedures will be implemented to evacuate the work area and the emergency services contacted.

4.4 RADIATION EMISSIONS

4.4.1 The majority of welds will be tested ultrasonically (phased array). Where required, such as for small bore pipe fabrications, welds may be tested by x-ray. These operations are carried out within above ground installations or off site at purpose made x-ray facilities under the control of specialist sub-contractors operating to strict procedures and standards. There will therefore be no uncontrolled radiation emissions to the environment during construction and no impact on third parties.




5.1 ENVIRONMENTAL MANAGEMENT PLAN

5.1.1 National Grid requires that its Main Works Contractors have an Environmental Management System certificated to ISO 14001. Other (sub)contractors are expected to work to the principles of ISO 14001. The contractor is responsible under legislation and the contract for minimising and controlling the potential environmental impacts of all contract activities.

5.1.2 The Contractors will prepare a construction phase Environmental Management Plan (EMP), in accordance with ISO 14001, and develop and integrate the appropriate arrangements and procedures that support the EMP. The EMP will be prepared before construction works begin and will be in accordance with this CoCP. The Environment Agency will be provided with opportunity to comment on the EMP. The environmental performance of the contractors will be monitored throughout the construction process through regular audits, inspections and reviews by National Grid as well as internal audits carried out by the contractors.

5.1.3 The Environmental Statement has identified environmental receptors, significant impacts and proposed mitigation measures. These will form the basis for an Environmental Aspects and Impacts Register which forms part of the Environmental Management Plan. Significant aspects should also be included on the Project Risk Register. The Contractors will be responsible for developing Procedures and Method Statements to address, manage and control all identified aspects, having regard to all information available on the project.

5.1.4 The Environmental Aspects and Impacts shall be considered throughout planning and design phases of the project by the Contractor, including detailed design and the design of temporary works. The Contractor’s EMP shall detail the mechanisms that will be employed to ensure this requirement is achieved.

5.1.5 Plans and or procedures will also be developed for pollution control, waste management, water management, emergency response and traffic management. This will form part of a suite of documents to support the EMP.

5 Environmental Management




5.1.6 All project personnel will receive environmental (as well as health and safety) training including:

• induction training covering project specific environmental site issues (Pollution Control, Waste Management, Water Management, Emergency Response and Traffic Management);

• environmental awareness training; • toolbox talks on task specific environmental issues.




6.1 OBJECTIVE

6.1.1 To minimise traffic disruption and disturbance to local communities and the local road networks affected by increased traffic levels arising from construction activities; while achieving the efficient delivery of goods and machinery; and transport of personnel.

6.2 TRAFFIC MANAGEMENT PLAN

6.2.1 Traffic Management Plans (TMP) will be prepared by the Contractors co-ordinated with each element of the Onshore Scheme. The TMP will be prepared and implemented in accordance with Requirement 18 of the draft DCO (Document 3.1). The TMP will include the requirements for the management of construction traffic, prepared in consultation with the highway authorities and the emergency services. It will take into account existing road usage. It will also consider deliveries of pipe, construction plant and materials. The TMP would be reviewed and updated regularly, in line with the construction programme. It will include:

• Location of main temporary construction compound(s), pipeline route and AGI site boundaries and the access/egress points for the working width and temporary construction areas;

• Traffic Route Plans as submitted with the DCO application (Environmental Statement Figures 14.1 – 14.3, Document 6.14) defining the routes to be taken by HGVs, such as low-loaders, articulated trucks, LGVs and other site traffic, reviewed and updated to account for any changes in road restrictions;

• Consideration of other projects in construction during the construction phase of the Onshore Scheme;

• Construction hours and delivery times; • Details of each road crossing including technique for installing the

pipeline, access points, and traffic management requirements; • Location of temporary road closures including temporary diversion

routes agreed with the relevant Highways Authority; • Location of National Cycle Network routes where they are crossed by

the scheme or coincide with traffic routes to raise awareness of site personnel and drivers;

6 Public Access and Transport Management




• Strategy for traffic management and measures for informing construction traffic of local access routes, road restrictions (statutory limits: width, height, axle loading and gross weight), timing restrictions (if applicable) and where access is prohibited;

• Measures to protect the public highway (temporary protection of the road surface for tracked vehicle movements) including a dilapidation survey;

• Measures for the monitoring of the traffic management plan to ensure compliance from drivers and appropriate actions in the event of non-compliance;

• Mechanism for responding to traffic management issues arising during the works (including concerns raised from the public) including a joint consultation approach with relevant highways authorities.

6.2.2 Control measures will include:

• All construction traffic to adhere to the Traffic Route Plans (Environmental Statement Figures 14.1 – 14.3, Document 6.14) included in the Traffic Management Plan.

• Adequate parking will be provided at the Temporary Construction Compounds, the AGI sites and at each road crossing (where the pipeline route crosses a public road and there is a site access) to ensure that the safety and efficient operation of the public highway is not reduced.

• Welfare facilities will be provided within the working width so as to minimise the need for off-site trips by staff during the working day.

• At site accesses suitable supervision will be provided as required to ensure that traffic is controlled at access points to the pipeline and AGIs during construction (e.g. banksman checking road traffic and controlling construction vehicle movements) and mud deposits on the roads are minimised. Where required traffic signals (in accordance with New Roads and Street Works Act (NRSWA)) or stop-go boards will be used to control road traffic. Road signs will conform to Chapter 8 (Traffic Signs Manual 2009) and NRSWA.

6.3 ROAD CLEANLINESS

6.3.1 Measures will be put in place to reduce and mitigate the deposition of mud and other debris on the highway. These measures will have regard to the nature and the use of the site and will include as required:

• The use of mechanical road sweepers on public roads at road crossings, construction compounds and other works accesses to clean roads at appropriate intervals.




• The correct loading of vehicles and sheeting loads where necessary to avoid spillage during their journeys.

• Vehicle washing facilities at the main temporary construction compounds.

• Monitoring of road conditions and a system to call in additional resources (including manual removal of mud and debris) where required.

6.4 HIGHWAY REINSTATEMENT

6.4.1 Road Condition (Dilapidation) surveys will be carried out prior to each stage of construction, in conjunction with the Highway Authority as required. Surveys will be used to establish the condition of the highway prior to the works commencing and after the works are completed. Where temporary alterations to the highway are required the highway will be reinstated to the condition determined by the survey.

6.4.2 Opening of the road for pipeline installation will be carried out under NRSWA equivalent powers provided by the DCO (draft DCO Provision 10 Street Works (Document 3.1)). Reinstatement will be carried out in compliance with NRSWA requirements. Works to permanently alter the layout of the public highway such as at permanent AGI accesses will be subject to a separate agreement with the relevant Highways Authority.

6.4.3 After completion of works affecting a highway, all surplus materials arising from the works will be cleared from the highway, leaving it in a clean and tidy condition in accordance with the reasonable requirements of the local highway authority.

6.5 PUBLIC RIGHTS OF WAY

6.5.1 The pipeline works will cross a number of public rights of way. Where necessary temporary management measures will be put in place to allow their continued use however, in the interest of public safety, the majority of footpaths and bridleways crossed by the route will need to be closed for a temporary period during construction this may vary from a few days to several months. Where possible and in consultation with the Local Authority, alternative routes will be identified using existing public rights of way or public highways. Safety warning signage will be used to make construction workers and members of the public aware of the footpath crossing / construction works.




6.6 KIPLINGCOTES DERBY

6.6.1 The Kiplingcotes Derby is an historic horse race which dates back to 1519. It is held on the third Thursday of March each year. The four mile course starts at an old stone post on the grass verge in the parish of Etton (near the old Kiplingcotes Railway Station) and uses Kiplingcotes Racecourse Road, farm lanes and tracks to the finish at Londesborough Wold Farm.

6.6.2 The pipeline route crosses Kiplingcotes Racecourse Road close to the race starting post. National Grid will ensure that works will not prevent the running of the Kiplingcotes Derby. Hedge removal may take place in February, however the pipeline works would not start, in the area of the race, until early April (after the race has been run). The pipeline works including the road crossing will be completed and the road and verges reinstated by September of the same year. This will be written into the Works Information for the construction contract.




7.1 OBJECTIVE

7.1.1 To control and limit noise and vibration levels, so far as is reasonably practicable, so that noise sensitive receptors are protected from excessive or unnecessary noise and vibration levels arising from construction activities.

7.2 NOISE EMISSIONS

7.2.1 Noise associated with construction primarily derives from construction plant and machinery on site and traffic movements on public roads.

7.2.2 Some construction activities such as horizontal directional drilling, microtunnelling, and hydrostatic pressure testing require 24 hour operations during which pumps and generators will be operational.

7.2.3 During testing and commissioning of the pipeline venting will also be necessary. Venting for commissioning will be undertaken offshore.

7.3 CONTROL MEASURES

7.3.1 In order to achieve the construction noise levels set by Requirement 15 of the draft DCO (Document 3.1) the Contractor will identify noise mitigation measures to be adopted on the Project, which will include the following as necessary:

• Construction works will be confined to the normal working hours set by Requirement 13 of the draft DCO (Document 3.1), where possible. Night-time work will be kept to a minimum.

• Loading/unloading areas will be located away from residential properties and shielded from properties where practicable.

• Careful selection of plant items, construction methods and programming. Only plant conforming to relevant national, EU or international standards and directives, and recommendations on noise and vibration emissions will be used.

• All vehicles, plant and equipment associated with the construction works will be properly maintained in good efficient working order, fitted with effective exhaust silencers and operated in such a manner to avoid causing excessive noise emission. Where plant has been

7 Noise and Vibration




designed to operate with engine covers to reduce noise, these will be used and remain closed while the plant is in operation. Unless otherwise directed, items or plant in intermittent use will be shut down during idle periods.

• Static plant (such as pumps, compressors and generators) and equipment liable to create noise and/or vibration whilst in operation will, as far as reasonably practicable, be positioned so as to cause minimum noise disturbance, located away from sensitive receptors. Construction plant would however need to be located at the limits of work and there may be little scope for increasing the separation distance between plant and receptor locations. If necessary, acoustic barriers or enclosures will be provided1.

• On sites where a generator is required for prolonged periods of time, consideration will be given to the use of a silent generator.

• Where possible all major compressors will be ‘sound-reduced’ models fitted with properly lined and sealed acoustic covers which will be kept closed whenever the machines are in use and all ancillary pneumatic percussive tools should be fitted with mufflers or silencers of the type recommended by the manufacturers.

• Noisy plant would be screened as appropriate to reduce noise impact.

• Contractors will be required to adhere to the codes of practice for construction working and piling set out in British Standard BS 5228:2009 including guidance to minimise noise emissions, insofar as these are reasonably practicable and applicable to the work site.

• Other than at the landfall, where possible, piling will not take place outside the proposed construction hours of 07:00 to 19:00 Monday to Saturday. Piling will not take place on Sundays or Bank holidays or during the night-time periods;

• Where possible, the landfall piling will be undertaken during the normal construction hours of 07:00 to 19:00hrs Monday to Saturday, however some out of hours work may be required to work with the tides.

• Machines in intermittent use will be shut down in the intervening periods between work or throttled down to a minimum.

• Audible warning systems, such as vehicle reversing sirens, will normally be set to as low a setting as is compatible with safety requirements.

• Personnel would be instructed to reduce noise and vibration as part of their induction training and as required prior to specific work activities.

1 A robustly constructed barrier, of dense boarding or close boarded fence type, with a minimum mass per unit surface area of 7 kg/m2, with no gaps, could reduce noise levels by 5 – 10 dB.




• No employees, subcontractors and persons employed on the site will cause unnecessary noise from their activities e.g. excessive ‘revving’ of vehicle engines, music from radios, shouting and general behaviour etc.

• Careful handling of materials and positioning of items to ensure they are not dropped, thereby minimising the noise impact.

• Schedule large construction deliveries to least noise sensitive times of the day.

• Use of sufficient clear signage to ensure that construction vehicles use only designated routes.

• Strict controls prohibiting parking on kerbsides, or in the vicinity of noise sensitive receptors near the construction works.

Vibration

7.3.2 Measures will be taken to reduce the generation and transmission of vibration caused by plant, work equipment, site vehicles, pumping equipment, construction activities, temporary works activities, maintenance etc. These will include, as necessary, the control measures listed in Section 7.3.1, in particular: careful selection of plant, construction methods and programming; careful positioning of plant to minimise effects on sensitive receptors; careful timing of piling works and selection of piling techniques; and training of site personnel to reduce vibration.

7.4 MONITORING

7.4.1 Noise sensitive locations adjacent to the construction site and/or pipeline route will be identified in consultation with the relevant Environmental Health Officer(s) to which the noise thresholds set out in Requirement 15 of the draft DCO (Document 3.1) will apply.

7.4.2 A baseline survey will be undertaken during working hours before construction begins.

7.4.3 Noise monitoring will be undertaken periodically throughout construction in order to check compliance with the noise thresholds set out in Requirement 15 of the draft DCO (Document 3.1). Where compliance issues are identified prompt action will be taken to resolve those issues.




8.1 OBJECTIVE

8.1.1 To minimise as far as practicable the emissions to air of pollutants (particularly dust, fine particles (PM10) and nitrogen dioxide) from on-site vehicles, plant and construction activities and ensure that best practicable means are employed.

8.2 AIR EMISSIONS

8.2.1 Vehicle and plant emissions will be the main source of potential air pollution associated with the Onshore Scheme. Most machinery used on site will be powered by a diesel engine.

8.2.2 A certain amount of dust may be produced during dry weather conditions but every effort will be made to keep this to a minimum. This will be achieved by visual assessment of dust emissions and application of control measures as appropriate. Precautions will also be taken to minimise the deposit of mud and dust on the public roads. When this cannot be avoided appropriate control measures will be applied.


8.3.1 Measures will be taken to control the adverse effects of vehicle and plant emissions. These measures will include as necessary:

• Using low emission vehicles and plant fitted with catalysts, diesel particulate filters or similar devices where practicable.

• Requiring that plant is well maintained, with routine servicing of plant and vehicles to be carried out in accordance with manufacturer’s recommendations. Regular vehicle maintenance to minimise diesel smoke emissions.

• Requiring that all Project vehicles hold current certification and that they comply with the exhaust emission regulations for their class.

• Requiring all vehicles to switch off engines when not in use (no idling vehicles).

• Minimising the use of diesel or petrol powered generators and using mains electricity or battery powered equipment where practicable.

• Plan site layout so that machinery and dust-generating activities, such as soil screening, are located as far away from sensitive

8 Air Quality




receptors as practicably possible. Where practical remove materials that have a potential to produce dust from site as soon as possible, unless being re-used on site.

• Where there is an option, stockpiles will be located as far away from sensitive human and ecological receptors as possible.

• Handling and transfer of soil and dusty materials will be controlled to minimise dust generation. During material handling operations always keep the number of handling operations to a minimum and ensure that dusty material is not moved or handled unnecessarily.

• When loading vehicles in the vicinity of receptors and under dry windy conditions conducive to dust dispersal, use material handling methods that minimise the generation of airborne dust. Drop heights must be kept to a minimum. Damp down with water using a water bower where there are visible dust issues and under prolonged dry conditions.

• Vehicle loads to be sheeted during the transportation of loose or potentially dusty material or spoil.

• Where there is visible dust generation from working areas and stockpiles that appears to be causing a problem, during prolonged periods of dry weather, local spraying with water will be considered, using bowsers or temporary static sprays, as necessary, to supress dust generation.

• Appropriate speed limit to be enforced on site to minimise dust generation (10 mph).

• Hardcore surfacing to be provided at access and egress points to the public highway.

• The use of mechanical road sweepers on public roads at road crossings, construction compounds and other works accesses to clean roads (of dust and mud deposits) at appropriate intervals. If necessary mud deposits will be removed by hand.

• Implement a stakeholder communications plan that includes community engagement before and during work on site.

• Recording of all dust and air quality complaints, identify cause and take appropriate measures to reduce emissions in a timely manner.

• No burning of waste materials to be permitted on site. • Only use registered carriers to take waste off-site.




9.1 OBJECTIVE

9.1.1 To implement working methods to protect surface and groundwater resources from pollution and other adverse impacts including changes to water levels, flows and quality.

9.2 WATER MANAGEMENT

9.2.1 The key potential impacts during construction are from sediment loaded water discharge, either due to rainfall run-off or dewatering of excavations, entering site drainage and / or water bodies; and from spillage of pollutants such as fuels and chemicals to land or water. Controls are therefore required to manage water drainage, run-off and discharge on site and to prevent pollution from fuel, chemicals and sewage storage, handling and disposal.

9.2.2 Due consideration will be made to CIRIA (Construction Industry Research and Information Association) guidance documents C648 and C649 ‘Control of water pollution from linear construction projects’ (2006) and Environment Agency Pollution Prevention Guidance Notes as relevant to construction activities.

9.2.3 Geotechnical ground investigation surveys have been undertaken to inform the design of special crossings (roads, rivers, railways and canals) and above ground installations. During surveys ground water levels were recorded and piezometers were installed in boreholes at certain locations to allow groundwater levels to be monitored in order to get a record of level changes throughout the year. Further ground investigation surveys will be conducted during detailed design along other sections of the pipeline route; from these groundwater profiles will be derived, from which the requirements for de-watering will be identified.

9.2.4 Areas of artesian water under pressure have been identified which will require specially designed groundwater control measures and water management during the construction of the proposed pipeline.

9.2.5 Due regard will be made to private water supplies to ensure that construction activities do not disrupt or pollute these sources.

9 Protection of Water Quality




Water Management Plan

9.2.6 The Contractors will be required under the construction contract to develop and keep updated a project specific Water Management Plan in accordance with Requirement 9 of the draft DCO (Document 3.1). This will identify areas at risk of water pollution from surface water run-off, set out mitigation measures and treatment methodologies (silt management) and where they will be applied; establish the requirement for and position of water stops (to prevent the pipe trench becoming an adventitious path way for water and undermining of the pipeline); identify the requirement for de-watering, the location and design of any temporary water holding / settlement lagoons and the landtake required; identify the location of off-easement pumping outfalls required in order to minimise risk of water pollution; and identify any land drains that may be disrupted during the construction phase and in the proximity of proposed settlement lagoons or off easement pumping outfalls. The water management plan will also include mitigation measures for works within flood risk areas and requirements for hydrostatic test water abstraction and discharge.

9.2.7 Pumping operations will be required to remove water from excavations and to control water on site. Pumping activities will be carefully controlled through a “Permit to Pump” system which will ensure that necessary consents are in place from relevant regulatory authority (Environment Agency, Internal Drainage Boards or Lead Local Flood Authority) and land owners / tenants, where applicable (e.g. if discharging to land); the careful identification and selection of each pump discharge point; and that measures are in place to filter discharges prior to them entering a ditch or watercourse.

9.2.8 Necessary precautions will be taken to prevent water run-off and excessive silt load from the working width/ working areas entering controlled waters and watercourses crossed by the Works and associated construction activities. The Contractors will be responsible for identifying controlled waters and watercourses and for constructing bunds and barriers to prevent surface water flowing directly into controlled waters and watercourses; including ditches, abstraction points etc.

9.2.9 For some sections of the pipeline, construction will require extensive de-watering works to allow excavations to be carried out for example at the crossing of the River Hull, Driffield Canal and B1249 Frodingham Road at Wansford. Where required a detailed dewatering scheme will be developed prior to construction (in consultation with the Environment Agency) to manage the water arising from de-watering operations and treat the water prior to controlled discharge. This may include the construction of raised




lagoons for the storage of water and to allow the settlement of any sediment prior to discharge. Lagoons will be positioned and designed so as to minimise flood risk. Consideration will be given to the potential effects of de-watering on adjacent water features both from draw down during abstraction and from flood risk during discharge. Where such water features are identified, provision will be made, as required, for monitoring of water levels in adjacent water features prior to construction (to obtain information about water level fluctuations) and during dewatering operations.

Watercourses

9.2.10 Works affecting watercourses will be carried out in accordance with the requirements of the relevant regulatory authority (EA/IDB/LLFA). These works will include:

• Pipeline installation under a watercourse; • Construction access over a watercourse; • Abstraction of water from a watercourse; • Discharge of water to a watercourse.

9.2.11 Works will be carried out in accordance with the Environmental Management Plan, Pollution Prevention and Control Plan, Water Management Plan and crossing method statements and environmental risk assessments prepared by the Contractors for the Project.

9.2.12 Necessary consents and licences will be applied for and obtained from the relevant regulatory authority (EA/IDB/LLFA) prior to the relevant works commencing on site, including but not limited to:

• EA Consents include Flood Defence Consents under the Water Resources Act 1991 and Yorkshire Land Drainage Byelaws 1980; Environmental Permits under the Environmental Permitting Regulations 2010; and Abstraction licences under the Water Act 2003.

• IDB / LLFA Consents under Section 23 and Section 66 of the Land Drainage Act 1991 the Local Internal Drainage Board byelaws.

9.2.13 All main rivers and Water Framework Directive (WFD) designated watercourses will be crossed using non-open cut methods, except Bracken Beck.

9.2.14 Works within 8m horizontally of the landward limit of the bank of a main river (or 8 m from a wall or embankment on the bank) will require consent from the EA. Works within 7m/9m of the landward limit of the bank of an




Internal Drainage Board controlled watercourse will require consent from the relevant IDB.

9.2.15 Works will be carried out in accordance with any conditions imposed by these consents and licences.

Private Water Supplies

9.2.16 During the detailed design phase of the project, investigations will be completed to identify private water supplies along the pipeline route. Should such supplies be identified, a risk assessment will be conducted to assess whether these water supplies could be affected by project activities. Selected private water supplies will then be monitored before, during and after construction.

9.2.17 To ensure private water supplies are protected water quality testing will be undertaken for 12 months prior to, during and 12 months following construction.


9.3.1 A range of techniques will be employed before and during construction of the scheme to protect water quality. Works will be carried out in accordance with the requirements of the Environment Agency ‘General Guide to the Prevention of Pollution of Controlled Waters’ and the Environmental Permitting (England and Wales) Regulations 2010.

9.3.2 Contingency plans to deal with major pollution incidents at the site will be included in the Contractor's Pollution Prevention and Control Plan / Environmental Emergency and Contingency Procedures /Project Emergency Plan. EA guidance on pollution incident response will be reflected in the plans.

Pollution Prevention and Control Plan

9.3.3 In addition to complying with this CoCP, the Contractors will prepare a Pollution Prevention and Control Plan which encompasses the requirements set out in this section of the Code of Construction Practice and the ES Chapter 16 Schedule of Environmental Commitments (Document 6.16); the requirements of the Environment Agency (EA); and site specific requirements as identified as necessary. It will include, or cross-refer to, Environmental Emergency and Contingency Procedures. The Pollution Prevention and Control Plan may be a stand-alone document or section(s) within the construction phase EMP.




9.3.4 National Grid and its contractors will liaise closely with the Environment Agency (EA) throughout the project. All necessary IDB/LLFA and EA consents, environmental permits and licences will be obtained prior to the commencement of the relevant activity. The Contractors shall undertake to adopt reasonable requirements and recommendations of the Environment Agency.

9.3.5 Generic mitigation measures within the Pollution Prevention and Control Plan applicable during construction will include as necessary:

• Fuels and oils at the construction compounds, on site and at work areas to be managed in accordance with the Control of Pollution (Oil Storage) (England) Regulations 20012.

• Fuel to be stored within secure bunded fuel tanks with an impermeable bund capacity of 110% of the tank volume.

• Chemicals to be stored in accordance with the Control of Substances Hazardous to Health Regulations i.e. in a secure COSHH Store including an impermeable storage area with secondary containment for spill management.

• Fuel and chemical storage to be located a minimum of 10m away from a watercourse and 50m from an abstraction borehole.

• Suitable quantities of pollution control equipment such as sorbent pads, sorbent granules, booms or similar material to be readily available at the temporary construction compounds, on site and at work areas at all times and to be regularly checked.

• Spillage kits will be positioned across the site and at vulnerable locations as required and staff will be trained in their use. The kits will be checked regularly and replaced after an event.

• “Emergency Grab Packs” or spill kits to be carried in site vehicles and mobile plant and larger kits with fuel bowsers and emergency vehicles.

• Emergency communications (mobile phones or radios) to be carried with relevant personnel.

• All plant and equipment to be inspected before use on site and maintenance and servicing record checked.

• All static plant, such as pumps and generators, to have integral drip-trays (be self bunded) where possible or as a second preference external drip trays, which are to be checked daily.

• Mobile plant to be maintained in good working order. Larger items of plant such as side-booms and excavators to undergo daily recorded inspections by a competent person (usually the operator) for any defects such as leaking hoses. Where defects are evident the item of

2 Environment Agency Pollution Prevention Guidelines (PPG) 2: Above Ground Oil Storage Tanks and PPG26 ‘Storage and handling of drums and intermediate bulk containers’




plant shall be removed from site immediately; and serviced or replaced as soon as possible.

• No refuelling of mobile plant shall be undertaken within 10m of a watercourse or 50m of an abstraction borehole without the prior agreement of the EA.

• Where vehicle wash facilities are provided, no chemicals or grit will be used and silt traps/oil interceptors will be installed in general accordance with Environment Agency Pollution Prevention Guidance PPG6 and PPG13.

• Ensure appropriate method statements are in place prior to undertaking maintenance of vehicles at designated areas in the temporary construction compounds only.

• For operations using concrete, grout and other cement-based products, mixing of concrete and designated contained concrete washout areas are to be provided in accordance with good practice and EA guidance3 at least 10m from any watercourse or surface water drain to minimise the risk from pollution. Where possible ready mixed concrete will be used to avoid batching on site.

• Prevent construction waste/debris from entering any water body. • Minimise works in and adjacent to watercourses. • Undertake works in and adjacent to watercourses during dry weather

(where possible).

9.3.6 To ensure environmental protection of watercourses, all mobile mechanical plant and equipment will be fuelled and serviced at locations remote from watercourses. Where practicable, minimum refuelling distances for mobile plant will be set at 10m from watercourses and 50m from springs, wells and groundwater abstraction boreholes. Only self-bunded pumps will be used, other mechanical plant will be fitted with drip trays and absorbent material will be available to mop up any spillages. In the event of a spillage, all contaminated material will be removed from the site to a licensed waste facility.

Environmental Emergency and Contingency Procedures

9.3.7 Contractors will produce Environmental Emergency and Contingency Procedures (an Incident Response Plan) to include the following:

• list of key external and internal contacts; • reporting procedures; • site plan including drainage and location of storage/refuelling areas; • list of stored materials;

3 Environment Agency Pollution Prevention Guidelines 5: Works and Maintenance in or near water




• details of local environmental sensitivities, e.g. abstractors, high amenity areas and fish farms;

• location of spill equipment; • procedures for spill containment and remediation.

9.3.8 Staff and contractors will be trained in the use of spill equipment and how to manage and dispose of waste materials legally.

9.3.9 The Environmental Emergency and Contingency Procedures / Incident Response Plan will be developed and implemented in consultation with the appropriate statutory bodies (including the local authority and EA).

Other Controls

9.3.10 A range of techniques will be employed before and during construction of the scheme to protect water quality.

9.3.11 Pollution prevention measures to be adopted in general accordance with the Environment Agency Pollution Prevention Guidance (PPG) including:

• PPG1: General Guide to the Prevention of Pollution. • PPG5: Works and Maintenance in or near water. • PPG6: Working at Demolition and Construction Sites. • PPG7: Refuelling Facilities. • Getting Your Site Right: Industrial and Commercial Pollution

Prevention

9.3.12 To prevent sediment laden run-off entering watercourses/ standing water bodies the following measures will be implemented as necessary:

• Works that are likely to generate silt-laden runoff (e.g. earthworks and excavations) will be undertaken preferentially during the drier months of the year (the Pipeline itself will be constructed during Spring / Summer);

• Temporary construction compounds at AGIs and temporary construction areas at special crossings and associated stockpiles will be located away from watercourses and water bodies (by a minimum distance of 2m);

• If steep slopes are present on stored soil then barriers controls will be utilised (silt fences / straw bales etc.) as required;

• If required, water management will be provided (e.g. buffer strips, earth bunds, silt fences, grips, settlement ponds and straw bales, or other proprietary treatment etc.) on a site specific basis;

• Minor watercourses (or field drains) will be traversed following the installation of temporary pipe culverts. Larger watercourses will be




crossed using a temporary open span structure. All temporary crossing structures will be removed and the bed / banks reinstated immediately after the works;

• Where works are adjacent to watercourses/ water bodies, appropriate barriers will be installed temporarily along their edge to prevent plant tracking down slopes damaging riparian vegetation or to prevent silt laden runoff flowing untreated into the watercourse/ water body;

• Mud will be controlled at entry and exits to the site using road sweepers;

• Tools and plant to be washed out and cleaned in designated areas within the site compounds where runoff can be isolated for treatment before discharge to watercourse/ground or sewer under consent from the EA;

• Water from dewatering will be treated so that fine particulates can settle out prior to being discharged under consent into a watercourse or sprayed on to fields to filter to ground. Materials, debris and other material will be prevented from falling into watercourses;

• Construction SUDS (such as settlement lagoons or other temporary attenuation) will be used if necessary and where appropriate to do so;

• Over-pumping will be carefully managed to prevent suspension of sediment or contamination;

• Discharges to watercourses will only be carried out under consent from the EA. No discharges or abstractions will take place to or from ponds.

9.3.13 In relation to land drainage systems the following measures will be implemented as necessary:

• Pre-construction drainage will be carried out to install header drains along the pipeline working width to intercept existing field drains, divert drainage from the working width and to retain the integrity of the field drainage system.

• Post construction drainage will be carried out to ensure that the integrity of the drainage infrastructure affected by construction is adequately restored.

• To ensure that the land drainage systems remain operational, measures will be taken through appropriate site management, to minimise or prevent debris and other material entering land drainage systems.

• Install an appropriate operational drainage design/ strategy designed at green field rates for AGIs.

• At AGIs a surface water drainage system will be installed to manage the surface water runoff from the site. This will be designed using Sustainable Drainage Systems (SuDS) where possible and will utilise




features such as permeable pavements. These drainage designs will be designed in accordance with current best practice set out in The SuDS Manual (CIRIA, 2007) as appropriate.

9.3.14 In relation to flood risk areas the following measures will be implemented as necessary:

• Where it is considered necessary to store material in the flood plain, the requirements for mitigation will be agreed in consultation with the EA before construction commences. It may also be necessary to provide breaks in the spoil to allow flood waters to propagate.

• If working in an area shown to be at risk of flooding by the EA maps, the risk of flooding will be considered at an appropriate level within the risk assessments and management plans for the construction site. Appropriate emergency evacuation procedures will be put in place to be implemented in the event of a flood occurring.

• De-watering of excavations may be required to mitigate potential inundation with groundwater. De-watering will be undertaken in a manner which will not cause an increase in flooding due to its disposal.

• A non-open cut method will be used to cross the River Ouse which will not interfere with the flood defences. This method of crossing will reduce the risk of causing flooding to areas upstream, downstream or surrounding the crossing. However, this method will still be subject to agreement with the EA through a Flood Defence Consent application under the Water Resources Act 1991 which is required for any works in, over, under, or adjacent (within 8m of the top of the bank) to Main Rivers.

• The method of crossing other Rivers and Ordinary Watercourses (including drainage ditches) shall be undertaken in a manner which will not cause an increase in flood risk to areas upstream, downstream or surrounding the crossing.

• There is the potential for fluvial flooding of the Drax PIG Trap site from the River Ouse. The proposed site is within an EA Flood Alert Area “Tidal River Ouse Catchment”. During construction in this area the Contractor will sign up to the free EA flood alert service and incorporate it into the site’s evacuation plan to provide timely alerts when flooding may be expected and provide all site personnel with an adequate response time in which to evacuate the site.

• There is the potential for fluvial flooding of the Camblesforth Multi-junction site from the River Ouse or River Aire. The proposed site is within an Environment Agency Flood Alert Area “Tidal River Aire Catchment”. During construction in this area the Contractor will sign up to the free EA flood alert service and incorporate it into the site’s evacuation plan to provide timely alerts when flooding may be




expected and provide all site personnel with an adequate response time in which to evacuate the site.

• There is the potential for fluvial flooding of the Tollingham Block Valve site from the River Foulness or Market Weighton Canal during construction. No flood alerts are available for the site. The Contractor will prepare and implement an appropriate emergency flood plan for the site which includes the use of available sources of information on live flood alerts such as weather forecasts and mobile apps. This will provide all site personnel with an adequate response time in which to evacuate the site.

9.3.15 In relation to water course crossings the following measures will be implemented as necessary:

• Where open cut crossings are required they will be carried out with reference to the EA’s PPG 5 and subject to Flood Defence Consent when necessary. In particular the following practices will be in place: o Affected area will be kept to a minimum; o Where possible works will be carried out during dry weather; o Works in the channel carried out in a bunded, dry working space

with any water entering the space being pumped out for treatment;

o Excavation plant to be in checked prior to use at open cut watercourse crossings to ensure they are in a sound condition and free of potentially contaminating materials;

o Where considered necessary a boom is to be set out across the channel downstream to collect oil / surface material;

o No refuelling of plant or machinery is to take place near watercourses, except for static plant required for specialist work. Any such refuelling will be undertaken only where there is a suitably sized spill kit available;

o All static plant to be clean, without leaks and self bunded; and o Following completion of in channel works, the channel will be

cleared of debris/materials, the natural bed reinstated, and water allowed to flow from downstream spilling up channel to prevent remobilisation of loosened material.

9.3.16 In relation to hydrostatic test water the following measures will be implemented as necessary:

• The hydrostatic-testing water to be abstracted and discharged in accordance with the EA’s requirements, and with all consents and permits.




• Water abstracted from within a catchment will be replaced to the same catchment. The EA will be consulted regarding abstraction locations and discharge rates back to the system.

• Should a slow rate of discharge be required, following a section of the Pipeline being tested, then lagoons will be used to hold the water. Sufficient area has been allowed for, within the application boundary, to anticipate this potential requirement.

9.3.17 A number of environmental commitments have been made in the ES which have informed the assessment. These commitments are illustrated in Figure 2.1 – 2.10 Environmental Commitments and those relating to watercourses have been included in the control measures listed in the Sections above.

9.3.18 Within the Flexible Drainage Areas shown in Figure 2.1 – 2.10 the following assumptions have been applied which will be adhered to during construction (see also Sections 10.3.27, 11.2.9 and 12.3.14):

• No drain connection shall take longer than 3 days to install and will be completed within the main construction period. Works will be similar in scale to existing agricultural practices, (e.g. using plant similar in scale to agricultural machinery).

• Installation of drainage will utilize a machine which excavates and installs the drainage pipes as one process (Mastenbroek or similar).

• Installation of the drainage will be in accordance with good practice and the requirements set out within this Code of Construction Practice.

• The drainage will ensure the existing hydrology of the area will not be changed, through keeping flows in balance.

• The maximum working width required for drain installation is 10 m. • Drainage will be installed to ensure that agricultural drainage systems

continue to function as they did previously. • All outfalls requiring Land Drainage Consent will be designed in

agreement with the Environment Agency and installed with the appropriate consent in place.

• Areas of known contaminated ground will be avoided. • Soil will be handled in accordance with best practice guidelines to

protect soil quality. Drainage measures will be agreed with landowners and occupiers.




10.1 OBJECTIVE

10.1.1 Construction works will be carried out in such a way as to ensure that disturbance to nearby ecological interests, including the River Hull Headwaters SSSI, is controlled and that appropriate measures are adopted to protect the ecology of these areas and avoid impacts on protected species in accordance with relevant good practice and statutory provisions/legislative requirements.

10.2 ECOLOGY

10.2.1 Extensive ecological surveys have been conducted as part of the Environmental Statement to inform the Ecological Impact Assessment. Draft applications for protected species licences have been submitted to Natural England as part of the DCO process. These relate to great crested newts. Although ecological surveys identified the presence of bats and badger in the vicinity of the onshore scheme, at the time of submission of the DCO application, licensable impacts on these species could be avoided and therefore draft licence applications have not been required.

10.2.2 Further ecological surveys will be conducted prior to construction as required to inform applications for protected species licences and as set out in Schedule 3 of the draft DCO Requirement 7 (Document 3.1). The need for additional licences for bats and badger will be reviewed at that stage. Surveys will also inform the preparation of method statements for construction activities in the vicinity of SSSIs (for example River Hull and Kelk Beck part of River Hull Headwaters SSSI) and in the vicinity of non-statutory designated Local Wildlife Sites.

10.2.3 Mitigation measures will be implemented to protect other species including nesting birds, water vole and badger.


10.3.1 In accordance with the provisions of the Wildlife and Countryside Act 1981 as amended, and other relevant nature conservation legislation, it will be a requirement for construction activities to:

10 Ecology




• Take reasonably practicable measures to minimise harm to and disturbance of wildlife caused by noise and vibration, dust and other air pollution.

• Consider the impact on wildlife when erecting and using site lighting. • Provide staff training on how to avoid damaging site ecology during

construction. Training and site induction will be based on the findings and recommendations provided in the Ecology Chapter of the ES (Document 6.9) and subsequent ecological surveys.

10.3.2 A number of ecological commitments have been made in the ES which have informed the ecological assessment. These commitments are illustrated in Figure 2.1 – 2.10 Environmental Commitments and have been included in the control measures listed in the following Sections.

Scheme of Ecological Mitigation and Reinstatement

10.3.3 The Contractor will be required under the construction contract to carry out construction activities in accordance with a Scheme of Ecological Mitigation and Reinstatement containing, as relevant, the survey results and ecological mitigation and enhancement measures for species and habitats that are not subject to the need for a licence, and which are included in the environmental statement as set out in Schedule 3 of the draft DCO Requirement 8 (Document 3.1). The Scheme of Ecological Mitigation and Reinstatement will cover:

• Hedgerow reinstatement methods, species mixes, fencing (including rabbit proof fencing) and aftercare.

• Appropriate grassland reinstatement, seed mixes (in consultation with the landowner/tenant) and aftercare.

• Ditch reinstatement, species mix and aftercare. • Tree species, sizes, planting methods, fencing (including rabbit proof

fencing) and aftercare.

10.3.4 The Scheme of Ecological Mitigation and Reinstatement will include working methods, and means of mitigation, reinstatement and restoration. It will also include a timetable for implementation.

Other Control Measures

10.3.5 To minimise impacts on habitat and species the following measures will be implemented as necessary:

• Environmental Adviser (otherwise referred to as Ecological Clerk of Works) to observe operations, particularly during the initial phases of fencing, vegetation clearance and earthworks operations, during any




habitat creation operations or within areas where protected species have been identified. Retain existing vegetation wherever possible (See landscape Section).

• Early identification and fencing off of sensitive ecological areas and creation of exclusion zones to restrict the movement of staff and machinery in these areas. Restrict plant and personnel to the working area. Fence off riverine habitats at watercourse crossing points. Install appropriate fencing around site working areas.

• To avoid effects on species sensitive to lighting such as otter and bats, lighting required during construction of the pipeline and AGIs and designed for the operation of AGIs should be directional and low-level whilst adhering to health and safety standards.

• Retain valuable landscape features (e.g. Trees with 75mm Diameter at Breast Height or greater) where possible and integrate into the landscape/ reinstatement proposals. Mature trees will be avoided where possible.

• Where trees are retained within or immediately adjacent to the construction working width/ working area, the trees and their root zone will be protected by means of fencing. If this is not practical, additional measures to mitigate impacts may include bog matting and/or sand padding to spread the weight of the machinery over the roots (where soil compaction may damage tree health). In addition preliminary work will be carried out before construction to remove any overhanging branches likely to obstruct or be damaged by the works.

• At watercourses measures to be implemented (depending on the method of construction) to minimise disturbance to the banks and bed and pollution prevention measures to be employed (see Section 9.0 Protection of Water Quality).

• Ponds and other standing water bodies are to be avoided by the pipeline route. Measures will be implemented to protect water quality in ponds, standing water bodies and associated habitats. No discharges or abstractions will take place to or from ponds. Pollution control measures set out in the Water Management Plan and Pollution Prevention and Control Plan will be implemented as set out in Section 9 Protection of Water Quality.

• For habitats such as species rich hedgerows ensure careful removal and storage of the topsoil separately from the sub-soil horizons and soil from other habitat areas to preserve the natural seedbank. Reinstate soil after construction to ensure rapid and effective re-establishment of habitats, especially hedgerows.

• Where possible the least vegetated route within the limits of deviation for the pipeline will be chosen and wherever possible the pipeline will be routed to use existing gaps in the hedge canopy.




• The section of hedgerow removed is to be kept to the minimum required for safe working practice (this will be less than the 36m working width and less than 51m at crossings).

• Reinstatement and planting to be undertaken at the earliest opportunity, within the planting season and planting techniques will be designed to ensure rapid establishment and development of suitable habitats.

• Hedgerows will be reinstated following construction and where there are banks and ditches adjacent to hedgerows these will be reformed to similar profiles as before and topsoil will be replaced.

• Hedgerow sections removed for construction will be replanted. Species mixes will match or improve on the existing hedgerow. Hedgerow replanting will be of native species of British origin and of local provenance where possible. Hedgerows will be enhanced with species rich planting where possible and gappy/defunct hedgerows will be replanted across the working width where appropriate.

• Where mature trees (as defined in Section 12.2.6) have to be removed, they will be replaced on a 4 for 1 basis using standard trees, where appropriate. (Standard trees shall have a reasonably straight clear stem 1650mm to 1800mm in height from ground level to the lowest branch and a minimum diameter of 25mm when measured between 600mm and 1000mm from the ground).

• Where young/semi mature trees (less than 75mm diameter at breast height) may need to be removed these will be replaced on a 1 for 1 basis.

• At AGIs planting schemes to include stretches of hedgerow connecting into existing hedgerows where possible and planting up of gaps in existing hedgerows. New planting around AGIs will consist of a diverse selection of trees and native woody shrub species that are typically found or are representative of the surrounding area and which provide appropriate food source for wildlife. Native species of British origin and preferably of local provenance, to be used in planting schemes.

• All planting will be carried out to National Grid Specification for Landscape Works (NGC/SP/ENV/2) and management procedure for Maintenance of Landscaped Sites (NGC/MP/ENV/3) and will be subject to a five year defects and maintenance period.

• Any tree or shrub planted as part of the Scheme of Ecological Mitigation and Reinstatement which dies or becomes seriously damaged or diseased within five years after completion of construction, shall be replaced in the first available planting season with stock of the same species and size as that originally planted.

• Reinstate arable land not required for the footprint of the AGIs or for landscape planting to minimise the loss of farmland habitat.




• Reinstate grassland with a seed mix chosen to replicate the species composition of the areas, to be reinstated. For species rich grassland seed mixes of British origin and preferably of local provenance will be sought where possible. Consideration will be given for opportunities to increase species diversity, especially along field margins and road verges, subject to discussions with landowners.

• Reinstate watercourse characteristic native features and recreate habitat lost. Implement improvements where possible.

10.3.6 To minimise riparian and aquatic habitat loss on open cut watercourse crossings the following measures will be implemented as necessary:

• The area of riparian habitat that will be temporarily disturbed as part of the proposals will be kept to a minimum. The section to be affected will be fenced to delineate the working area and to prevent damage to the surrounding habitat. Fencing will be erected prior to construction and will remain until all works have ceased. The fencing will be placed to limit construction activities to the minimum safe working width possible and no machinery or materials will be stored outside of the delineated working width.

• Bank vegetation will be left in place for as long as practicable to act as a buffer to run-off from the working width entering the watercourse. Topsoil from the banks will be removed and stored separately for reinstatement after construction.

• The working width through the channel will be kept to the minimum required for ecological management and safe working practice and will be clearly marked to prevent encroachment. The channel bed material will be removed prior to the excavation of the trench, stored separately and replaced following the installation of the proposed pipeline to promote rapid colonisation of the area by aquatic invertebrates and aquatic plants. Where appropriate, marginal vegetation of ecological value will be removed from the watercourse and stored upstream for use in reinstatement.

• The proposed working method will incorporate measures to maintain the flow downstream of the crossing point.

• The preconstruction bank and channel profiles will be restored on completion of the pipeline crossing works. Channel bed-substrates will be replaced to the same composition and topsoil reinstated to the banks.

10.3.7 To prevent the spread of Invasive species the following measures will be implemented as necessary:

• Pre-construction surveys will be undertaken to identify invasive species listed in Schedule 9 of the Wildlife and Countryside Act 1981




and mark out contaminated areas. • Fencing with signage will be installed to prevent workers from

entering the contaminated area. Where possible construction works will avoid disturbance of these areas.

• Construction personnel will receive training to enable them to identify invasive species including Himalayan balsam and Japanese knotweed and immediately report any new areas of invasive species identified throughout the construction period.

• Where invasive species cannot be avoided an appropriate strategy for their removal will be prepared in consultation with the Environment Agency.

• Measures will be in place prior to construction to avoid or remove invasive species within the application boundary. If works occur within 5m of Himalayan balsam or 10m of Japanese knotweed (located either within or outside of the application boundary), method statements will be prepared with reference to best practice guidelines4 including the following measures to prevent the spread of these species: o No equipment or materials will be stored in the contaminated

area and no vehicles with caterpillar tracks will work within contaminated areas;

o Contaminated soils (containing the plants, their roots or their seed) will be carefully excavated, removed from site and disposed of correctly at a licenced disposal site. Contaminated soils will not be stored or used in any other areas of the site;

o Machinery or equipment (including work boots) that could be contaminated will be cleaned before leaving the area.

10.3.8 To reduce the potential for destruction/damage of nests and disturbance to nesting birds the following measures will be implemented as necessary:

• Undertake site clearance/ hedge and tree removal outside of the breeding bird season (typically March-August inclusive).

• Install bird deterrent measures (buzz tape / netting) to deter birds from nesting in areas where habitat/vegetation cannot be removed ahead of the bird breeding season but will be disturbed by construction.

• If ground nesting habitat /vegetation clearance works are carried out within or close to the breeding season a suitably experienced and qualified ecologist will be present on site to check the working area for active nests before works commence.

4 The Knotweed Code of Practice Environment Agency July 2013; Managing invasive non-native plants in or near fresh water Environment Agency July 2010.




• The Environmental Advisor/ Ecological Clerk of Works will monitor construction operations during the breeding bird season.

• If nests are discovered, appropriate mitigation to be implemented to ensure that they are not disturbed or destroyed before works can commence in that area of the site. This may include an exclusion zone between the nest and the works.

• If Schedule 1 species are found breeding within the working area, works in that area will stop immediately and Natural England will be advised. A Schedule 1 disturbance license may be required before works can continue.

• Undertake pre-construction barn owl surveys where required to determine the habitat suitability and presence/absence of barn owl.

• Existing barn owl boxes and trees with evidence of barn owl nesting or roosting will be avoided by the pipeline works where possible.

• As a secondary precautionary approach, installation of barn owl boxes at locations to be agreed to either mitigate effects, if there are any, or to enhance local barn owl numbers.

• Install exclusion measures to prevent sand martins nesting in the cliff at the landfall for one nesting season (during the main construction period). Exclusion measures (e.g. netting or mesh over the area of cliff/bank face) will be installed during the period October to end February, prior to the nesting season, at suitable nesting habitat which could be directly affected by the construction works and access route onto the beach. Location and type of exclusion measures will be specifically determined in advance in consultation with the Environmental Advisor/Ecological Clerk of Works. The exclusion measures will be periodically monitored following installation by the Environmental Advisor/Ecological Clerk of Works and will remain in place until at least the end of August.

• Habitats suitable for nesting birds which will be temporarily removed to facilitate construction will be reinstated following completion of construction.

10.3.9 In relation to wintering bird populations the following measures will be implemented as necessary:

• The main pipeline construction works will not commence before 1st April and will be completed by the end of September.

• In the case of the Barmston Pumping Station to reduce the effect of construction noise and human disturbance on breeding birds, in particular barn owl, some construction operations in this area will commence ahead of the barn owl nesting season (during the winter February and March) so that birds which establish territories and nest adjacent to the works will be tolerant of construction activities and human presence.




• At Barmston Pumping Station construction works will continue throughout the summer and the following winter. Working areas set up at the onset of construction will be strictly adhered to prevent additional disturbance of non-breeding wintering birds

• Landfall construction in the intertidal coastal habitat on the beach and in fields immediately adjacent to the cliffs within the application boundary will be undertaken outside the wintering bird season (1st October – 31st March) with the exception of hedgerow removal.

• Habitats suitable for foraging and roosting by wintering birds which will be temporarily removed to facilitate construction will be reinstated following completion of construction.

10.3.10 To avoid effects on badgers the following measures will be implemented as necessary:

• Pre-construction badger surveys will be undertaken to determine if the badger distribution has changed since the ES surveys were undertaken, to establish which setts are active and the extent, location and activity status of badger setts to inform pipeline routeing and refine the badger mitigation along the pipeline route and at AGIs.

• The pipeline route and temporary construction areas will be designed to avoid direct effects upon badger setts.

• To prevent disturbance of a badger sett whilst occupied, a buffer zone of at least 30m will be adopted between the working width / working areas and the known extent of active badger setts.

• If it is not possible to avoid direct effects upon active setts a Natural England derogation licence will be obtained to fully or partially close the sett before works are undertaken.

• Provide means of escape for badger from trenches left open overnight within areas of known badger activity as necessary.

• Allow continued access along badger paths, where practicable. • Locate chemical storage areas/COSHH Store away from setts. • Night-time working in the vicinity of known setts to be avoided (except

at certain crossings and certain operations where 24 hours working is required);

• Lighting, where required on site, to be directed away from setts.

10.3.11 To reduce the potential for destruction/damage and disturbance to hibernating/breeding bats/ disturbance of bats in trees/ minimise disturbance to bat flight lines the following measures will be implemented as necessary:

• No trees identified as part of the ES bat surveys as having confirmed bat roosts will be felled (refer to Figure 2.1 – 2.10 Environmental




Commitments) however, they may require lopping or pruning to accommodate the works.

• Further pre-construction bat surveys will be undertaken by a bat specialist of trees with potential to support bats that are ‘at risk’ of removal (during May – September of the year prior to construction). Preconstruction assessments and/or dusk/dawn surveys will be carried out to re-assess the status of roosting bats and where required to obtain detailed information for a bat licence application.

• The removal of trees will be kept to a minimum and mature trees with identified bat potential should be avoided where possible.

• Where known bat roosts will be retained within the working width a buffer zone will be adopted around the bat roost tree (the specific distance of which will be agreed on site in consultation with the Environmental Advisor/ Ecological Clerk of Works). The tree will be protected by fencing to protect the tree and root zone during the works and to avoid encroachment by vehicles, materials storage and construction personnel; fencing to remain in place throughout construction.

• Programming of works to avoid night time working activities adjacent to known bat roost trees, where possible. Lighting, where required on site, to be directed away from known bat roost sites.

• Where a bat roost is to be removed or disturbed a licence will be obtained from Natural England. Works affecting bat roosts (such as lopping and pruning) and the removal of roosts will be undertaken in accordance with the bat licence method statement.

• Bat roost boxes to be provided on suitable trees adjacent to the pipeline works (within the Application Boundary close to the roost tree to be removed but outside of the working area) where required as part of the licensed bat works or where temporary or permanent exclusions are required. These will be installed prior to exclusion and removal of the known roost to act as receptor locations for excluded bats.

• Exclusion measures to be undertaken by a licensed ecologist within the bat active period between May and the end of September.

• Only once licensed exclusion has been undertaken in accordance with licence conditions, would trees be pruned/lopped or felled. This would be undertaken under the supervision of a licensed bat worker in either the period September to end October or March/April.

• As a precautionary approach, works on trees with a high and moderate potential to support bat roosts, which were not occupied during pre-construction surveys, will be carried out under supervision of a licensed bat worker in accordance with best practise (Bat Conservation Trust 2012) to avoid harming bats. As bat roosts in trees can be highly transient, to avoid the main breeding and




hibernation roosting periods these trees should be removed in either the period September to end October or March/April. In the event that tree works have to be carried out between November and February this precautionary approach must be carried out. If bats are discovered during works, a licensed bat worker will be present on site who is able to handle bats. Felling/pruning works on the tree will be stopped and advice sought from Natural England.

• Where any Low risk potential trees (as defined by the preconstruction assessments/surveys), need to be removed these would be felled using reasonable avoidance measures in accordance with Bat Conservation Trust Guidance.

• To minimise breaks in bat flight line connectivity, the area of hedgerow removed within known bat flight lines and foraging areas will be kept to a minimum and hedgerows reinstated promptly in the first planting season post construction.

10.3.12 To avoid / minimise effects on water vole the following measures will be implemented as necessary:

• Undertake pre-construction water vole surveys where required, preferably between April – October, to re-assess and determine the status of water vole on watercourses previously identified as being suitable to support water vole and which are crossed by the pipeline route, construction accesses or associated works.

• For works within the vicinity of watercourses known to support water voles but not crossing the watercourse a 2m (minimum) buffer zone will be maintained along the watercourse and demarcation fencing erected to prevent encroachment of vehicles and materials storage into the water vole habitat.

• Where water voles are present, where possible the pipeline route will be aligned to cross the watercourse at locations where there is lower quality water vole habitat, therefore affecting fewer animals. Where this is not possible a mitigation strategy will be produced and agreed in consultation with Natural England and the Environment Agency.

• In order to maintain the free movement of water vole along riparian corridors, there will be a stand-off from the banks, typically of 7m, where a non-open cut crossing is to be conducted on a watercourse where water vole are present (excluding construction access).

• At watercourses known to support water vole where burrows have been identified which cannot be avoided by the pipeline works, the area of bank habitat disturbed by the works will be kept to the minimum practicable for safe working (maximum 8m for non-open cut crossings and 13m for open cut crossings) to accommodate access, pipeline installation and drainage outfalls, as necessary.




• Burrows within the affected area would be removed following habitat manipulation (strimming and vegetation removal) and displacement measures. The displacement area would include the area to be directly affected by the works as well as an appropriate buffer to ensure that burrows adjacent to the works are not incidentally damaged. The retained habitat adjacent to the working area will be demarcated to prevent encroachment.

• Where necessary water vole displacement measures will be undertaken between late February and early April (weather permitting) when these measures are likely to be most successful. Displacement methodology outlined in Box 9:C of the Water Vole Conservation Handbook – Third Edition (WCRU 2011) will be undertaken. This involves strimming and ideally exclusion of water from the affected section of watercourse, followed by close inspection of bank habitat, excavation of non- active burrows using hand tools and removal of habitat.

• Where practical, works at watercourses known to support water vole will be undertaken as soon as the displacement measures are complete. Where this is not possible the area will be maintained free of water vole by regularly strimming the affected area or enclosing the area using water vole proof fencing, with regular monitoring and inspections to ensure water vole are still absent.

• Habitats to be reinstated as soon as possible, on completion of the crossings. Topsoil stripped from the banks will be stored separately and reinstated following completion of the works. Bank side grassland habitat will be re-seededwith an appropriate seed mix to aid re-vegetation. Where agreed with the landowner plant species which are favoured by water vole e.g. rushes, sedges or reed will be included in the seed mix.

• The existing drain running through Barmston Pumping Station will be retained, measures for the protection of water vole will be applied to minimise the effect of construction works and permanent accesses across the drain.

10.3.13 To avoid / minimise effects on otter the following measures will be implemented as necessary:

• Pre-construction otter surveys will be undertaken at watercourse crossings where otter have been identified previously to inform detailed design, to avoid habitat suitable to support otter holt sites and to ensure there are no otter holts or potential holts or couch sites within the application boundary that may be affected by the works.

• In order to maintain the free movement of otter along riparian corridors, there will be a stand-off from the banks, typically of 7m,




(excluding construction access) where a non-open cut crossing is to be conducted on a watercourse where otter are present.

• As otter is mainly nocturnal, night time working will be restricted where practicable in proximity to known otter habitat, to avoid disturbance to otter moving throughout their territory and the maintenance of barrier free movement.

• Where night time working is required at river crossings where non-open cut techniques are used, the works will be positioned as far away from watercourses as is practical to do so. In most cases the works will be at least 7m from the top of the riverbank in areas of known otter habitat (excluding construction access), which will ensure a 7m width free of any works which would allow otter free movement along the bank.

• Lighting of the working area will be positioned to avoid the watercourse and bank side habitat being lit. Directional lighting or a screen to provide a visual barrier between the works and the river will be placed along the riverward side of the working area.

• Site compounds and storage or waste storage facilities will be located away from otter habitat and night working would be avoided where reasonably practicable in areas where otters are active (including at dawn and dusk).

• To minimise the loss of riparian otter habitat at watercourses confirmed to support otter the working width for open cut crossings and the area of bank habitat disturbed by construction access works will be kept to the minimum required for safe working practice and will be clearly demarcated/fenced to prevent encroachment into the surrounding habitat.

• Mature trees that could provide shelter (holt) for otter and above ground resting places (couch) will be avoided. If such features are found at open cut crossings or where access is required, and cannot be avoided, a licence will be required from Natural England. Construction and mitigation works will be undertaken in accordance with the licence conditions and method statement.

• On completion of the works bank side vegetation will be reinstated.

10.3.14 To protect great crested newts (GCN) the following measures will be implemented as necessary:

• A draft European Protected Species derogation licence application have been prepared for GCN and submitted to Natural England.

• Pre-construction great crested newt presence / absence surveys will be undertaken by licensed ecologists in the appropriate season the year immediately before construction to re-assess the status of GCN. Population surveys will be conducted where GCN are identified. Survey data will be used to update information in the draft GCN




licence application where required. The licence application will be finalised and submitted to Natural England based upon the results of the updated surveys.

• A Natural England licence will be obtained to exclude GCN from terrestrial habitats where works are to be undertaken within 250 m of a confirmed GCN breeding pond. A mitigation strategy will be developed following guidance within the Great Crested Newt Mitigation Guidelines (English Nature, 2001) which will form part of the licence. Natural England will be consulted on the mitigation measures proposed, prior to the licence application being submitted. Works will adhere to the mitigation strategy within the Licence method statement.

• The drain adjacent to Brind Lane supports a non-breeding aquatic habitat for GCN. If practicable the crossing of this drain will be by non-open cut method to minimise the effect on the aquatic habitat and adjacent terrestrial habitat. The construction access across the drain will be flumed/culverted to allow great crested newts access along the drain therefore no severance between ponds will occur. If this is not possible, newts would be excluded from the working area under a Natural England development licence; as part of the wider licensable works.

• Where terrestrial habitat within 250m of GCN breeding ponds/GCN populations will be temporarily impacted by the construction of the pipeline, which could result in injury and mortality of newts mitigation will be undertaken to ensure the newt population within these areas is maintained. Mitigation will involve the exclusion of newts from the working width by erecting newt exclusion fencing and implementing a capture programme to clear the area of newts. The working width would be fenced using herptile-proof fencing and newts would be trapped, using pitfall traps and moved out of the working area into suitable terrestrial habitat which supports the breeding ponds.

• The trapping strategy will be devised so that the movement of newts to or from their breeding ponds is disrupted as little as possible. The trapping density and number of capture nights will be in accordance with the Great Crested Newt Mitigation Guidelines (English Nature, 2001). (For example, the licence and exclusion period may need to commence earlier at Tollingham Construction Compound to allow for the completion of the exclusion in advance of site preparation works.)

• As part of the licensed translocation, sections of existing GCN habitat features within the GCN licence area will be retained within the Application Boundary to act as receptor locations for translocated great crested newts.

• Where breeding ponds are between 250m and 100m from the proposed works the effectiveness of exclusion fencing will be




evaluated depending on criteria such as the presence of suitable connecting habitat and applied as appropriate.

• In areas within 250m of a breeding pond where exclusion fencing is not proposed a precautionary approach will be adopted such as checking of suitable habitat prior to vegetation clearance or topsoil removal to ensure reasonable effort is made to prevent harm to GCN. Such measures will be agreed with Natural England.

• To minimise the effects on GCN terrestrial habitat the working width where it crosses optimal newt habitat (i.e. hedgerows, drains, semi-improved grassland) within 250m of a known GCN breeding pond will be kept to the minimum required for safe working practice and will be clearly marked (fenced) to prevent encroachment.

• Prompt reinstatement of habitat will be undertaken in the appropriate season following construction, areas of grassland will be re-seeded with an appropriate seed mix and hedgerows replanted. Exclusion fencing will be removed as soon as construction is complete.

10.3.15 To avoid / minimise effects on reptiles the following measures will be implemented as necessary:

• To determine if reptiles are present in areas of the scheme that have been highlighted by previous surveys including Driffield Construction Compound, precautionary reptile surveys will be undertaken where required prior to construction (optimum period March – May or August – October).

• Where reptiles are shown to be present within the working area, a method statement will be prepared setting out the mitigation measures to be applied to prevent harm to reptiles from construction activities.

10.3.16 To avoid/ minimise effects on fish the following measures will be implemented as necessary:

• Open cut crossing techniques will only be used at smaller watercourses and ditches.

• Where open cut crossing methods are required for watercourses with potential to support fish, measures will be implemented to exclude fish from the working area as it is dewatered.

• Open cut crossing works will be temporary (a maximum of 1 week from preparation to restoration) minimising the potential for any long term effect from barriers to fish passage.

• Where works adjacent to main rivers and WFD watercourse with migratory fish, require the use of lighting, lighting will be directional to avoid light spillage illumination of the watercourse and banks.




10.3.17 To minimise effects on River Hull Headwaters SSSI the following measures will be implemented as necessary:

• Preconstruction ecological surveys will be undertaken in advance of any works being undertaken to re-affirm the status of the site and crossing location and inform the details of the EA consent application;

• Non-open cut crossing methods will be used to install the pipeline beneath the River Hull/ West Beck and Kelk Beck. Works will be located more than 7m from the river bank (excluding the temporary construction access at Kelk Beck), therefore a stand off from the designation will be in place.

• Working areas will be fenced to prevent encroachment onto adjacent habitat.

• Vehicle access will be required across Kelk Beck – a single span bridge structure will be employed to avoid direct impacts on the channel. The footprint of the bridge will be set back a minimum 2m from the top of the banks on either side a buffer zone of a minimum of 2m will be retained to avoid direct effects upon bank side habitat and the SSSI designated river channel habitats. The areas affected by the bridge structure will be reinstated following construction.

• Necessary consents will be obtained from the Environment Agency (Flood Defence and Land Drainage consents, Environmental Permits as applicable) and works will be carried out in accordance with detailed method statements agreed with the Environment Agency and Natural England and conditions applied to those consents.

10.3.18 To minimise effects on SSSI habitats (including River Derwent SSSI, Barnhill Meadows SSSI and River Hull Headwaters SSSI) and Local Wildlife Sites (LWS) (including Brockholes SINC and Featherbed Lane) via changes in water quality and hydrology, pollution control measures set out in the Water Management Plan and Pollution Prevention and Control Plan will be implemented as set out in Section 9 Protection of Water Quality.

10.3.19 To minimise effects on Brindley’s Wood (Candidate LWS) the following measures will be implemented as necessary:

• Works adjacent to Brindley’s Wood will avoid the removal of mature trees within the woodland (no mature trees within the LWS will be removed);

• Preliminary work will be carried out before construction to remove overhanging branches likely to obstruct or be damaged by the works;

• Retained trees adjacent to the working width to be protected by means of a fence or if not practicable measures implemented to protect the roots. No excavations other than topsoil strip will be




carried out within 10m of the edge of the wood. Temporary storage of excavated spoil over the roots (where soil compaction may damage tree health) will be avoided where possible or kept to the minimum time possible.

10.3.20 To minimise effects on Featherbed Lane (part of Rushwood: Featherbed Common and Drain, Bishopsal Drain Candidate Local Wildlife Site) the following measures will be implemented as necessary:

• Works to cross Featherbed Lane (at two locations) to avoid the removal of mature trees where practicable;

• Where mature trees are removed they will be replaced on a 4 for 1 basis using like for like species, where younger trees (less than 75mm diameter at breast height)are removed they will be replaced on a 1 for 1 basis, following consultation with East Riding of Yorkshire Council (ERYC) in respect to effects on the LWSs;

• Retained trees adjacent to the working width/ construction access are to be protected by means of a fence or if not practicable measures implemented to protect the roots such as bog mat road, sand padding to distribute the weight of machinery over the roots, avoid storage of excavated material over the roots;

• The area of drain habitat associated with the Featherbed Lane LWS that will be temporarily disturbed during pipeline construction, access and drainage works will be restricted to 13m (mitigation for aquatic habitats to be applied see Section 10.3.6);

• Working areas will be fenced to prevent encroachment of construction activities, materials storage or machinery into adjacent habitat;

• Areas of grassland located on drain banks or centre of the track within Featherbed Lane LWS will be re-seeded with an appropriate seed mix.

10.3.21 To minimise effects on Etton to Gardham Disued Railway LWS the following measures will be implemented:

• Construction of the pipeline across the dis-used railway will be by non-open cut technique;

• Construction access across the dis-used railway will seek to avoid the most species diverse areas of calcareous grassland;

• The construction access will be topsoil stripped and stored separately;

• The working width on either side of the crossing will be fenced to prevent encroachment of construction activities, materials storage or machinery into surrounding habitat and the construction access will




be fenced and gated to allow continued use of the dis-used railway recreational route (Husdon Way Rail Trail);

• The area affected by the construction access will be reinstated following consultation with ERYC. As appropriate, areas will be left to regenerate naturally or a grass seed mix that reflects the existing grassland will be used. Seed sourced will be of British origin and preferably local provenance where suitable supplies are available. Fencing will be installed around re-seeded areas as necessary, to aid recovery of the reinstated area;

• For trees/scrub retained adjacent to the construction access, work will be carried out to remove overhanging branches likely to obstruct or be damaged by the works and measures will be implemented as necessary to protect the roots such as bog mat road, sand padding to distribute the weight of machinery over the roots.

10.3.22 To minimise effects on Granny’s Attic Railway LWS, Bracken Beck Wood, Copper Hall Wood and Banff Hill Wood Candidate LWSs

• For trees/scrub retained adjacent to the working width/ construction access, work will be carried out to remove overhanging branches likely to obstruct or be damaged by the works and measures will be implemented as necessary to protect the roots by means of a fence or if not practicable by measures such as bog mat road or sand padding to distribute the weight of machinery over the roots.

10.3.23 To minimise effects on Foston Fox Covert Heronry LWS):

• Works within 50m of Foston Fox Covert Local Wildlife Site to be restricted to short term (less than a day) drainage works only;

• Drainage works within 50m of the LWS will avoid the key heron activity periods one hour after sunrise and one hour before sunset;

• The main Pipeline working width will be located greater than 50 m from the LWS;

• Contractors will be made aware of the sensitive pre-incubation/incubation period for grey heron which is between approximately mid February and mid April, although some preliminary site preparation works may take place during this period, the main construction works (e.g. trench excavation) will not be undertaken in this period.

10.3.24 To minimise effects on Snakeholme Pastures Yorkshire Wildlife Trust (YWT) Nature Reserve:

• Construction of the pipeline will be by non-open cut technique beneath the land occupied by this YWT Reserve;




• A 7 m buffer zone will be established between construction activities to the west and Main Drain which forms the western boundary of the reserve (excluding the outfall for dewatering and potentially for hydrostatic testing activities);

• Pollution control measures set out in the Water Management Plan and Pollution Prevention and Control Plan will be implemented as set out in Section 9 Protection of Water Quality to avoid sediment release and pollution during construction, water management and drainage works in adjacent areas which may have effects on Main Drain.

10.3.25 To minimise effects on brackish marsh and rough grassland habitat north of Barmston the following measures will be implemented as necessary:

• The construction access to the beach will avoid the areas of brackish marsh and rough grassland habitat north of Barmston;

• Demarcation fencing will separate works traffic using the construction access to the beach to prevent encroachment into this habitat.

10.3.26 To minimise ecological effects at Driffield Temporary Construction Compound:

• Tree removal to accommodate works to widen the existing access into the site from the A614 will minimise the removal of mature trees;

• Mature trees removed to be replaced on a 4 for 1 basis; • Other trees along the A614 are to be retained. Retained trees either

side of the access to be protected by means of a fence; • The pruning or lopping of trees located within the Driffield

Construction Compound will be avoided wherever possible. Where this is not possible the amount of pruning/lopping of trees will be kept to a minimum and will only be required to facilitate safe access into and within the site;

• No buildings will be demolished at the Driffield Temporary Construction Compound as part of the Onshore Scheme other than two existing small buildings on the eastern side of the site;

• Bat surveys of trees and buildings previously identified as having potential to support bat roosts will be carried out prior to any tree works or demolition works. If a bat roost is identified the removal of the tree/building will be avoided if possible or a licence application will be prepared and submitted to Natural England with a method statement.

• Lighting will be restricted to period when necessary for safety and security lighting will be directed away from areas of retained trees and grassland to reduce disturbance effects on bat habitat;

• Temporary Construction Compound layout will allow for a minimum 10m wide buffer adjacent to Race Drain which will not be disturbed;




• Reptile surveys will be carried out where suitable reptile habitat is to be affected and mitigation measures applied if reptiles are identified within the working area (see Section 10.3.15 above).

• The Temporary Construction Compound will be fenced to ensure that areas of the site that are not part of the construction compound are retained and are not disturbed;

• Following demobilisation, the site will be reinstated to grassland subject to the future use of the site and landowner’s agreement.

10.3.27 Within the Flexible Drainage Areas shown in Figure 2.1 – 2.10 the following assumptions have been applied relating to ecological issues which will be adhered to during construction (see also Sections 9.3.18, 11.2.9 and 12.3.14):

• No drainage works shall be undertaken within the boundary of sites designated for their nature conservation value, including SSSI, SAC, SPA etc.

• No mature trees shall be removed, • The drainage works shall not result in a direct impact to ponds/water

bodies suitable for supporting great created newts. • No drainage works will be undertaken by heavy plant within 30 m of a

badger sett. Where works are required closer to badger setts the trenches will be dug and backfilled by smaller machines.

• The removal of vegetation (excluding mature trees which will be avoided) will be undertaken in the period from the beginning of September to the end of February to avoid disturbance of birds during the nesting season. If this is not possible all vegetation will be checked prior to commencement of drainage works to ensure no nesting birds are affected.

• Where drainage works affect existing drains suitable to support water vole a pre-work surveys and/or mitigation works, such as bank vegetation strimming, will be undertaken prior to any bank works taking place.

• The maximum working width required for drain installation is 10 m. • The area of existing drain/ditch affected by the connection of the new

drain will be no greater than 3m in length.




11.1 OBJECTIVE

11.1.1 Construction works will be designed and executed to avoid unnecessary impacts upon cultural-heritage assets (known and yet to be discovered) within and adjacent to all working areas, and to mitigate those impacts upon assets that cannot be avoided.


11.2.1 Necessary and appropriate precautions will be taken to protect (avoid and mitigate impacts upon) known cultural heritage assets identified during the planning and design phases of the project. The level of protection shall be agreed with the local authority planning archaeologist and English Heritage (as appropriate).

11.2.2 Archaeological Written Schemes of Investigation will be submitted to and approved by the relevant planning authority (in consultation with the planning archaeologists at ERYC and NYCC and English Heritage, as appropriate) in advance of works commencing as set out in Schedule 3 of the draft DCO Requirement 12 (Document 3.1). The Written Scheme of Investigation shall identify areas where a programme of archaeological investigation (evaluation, mitigation, excavation, built heritage recording and watching brief) is required, and the measures to be taken to protect or preserve in situ or by record any significant archaeological remains that may be found. Any archaeological investigations or watching briefs must be carried out in accordance with the approved Written Scheme of Investigation.

11.2.3 Archaeological evaluations (e.g. trial trenching), excavations and built heritage recording will be undertaken in agreed areas according to an approved Written Scheme of Investigation prior to construction. Wherever practicable, investigations are likely to be iterative, with the results of earlier stages determining the location, form and scope of later ones.

11.2.4 An Archaeological watching brief will be undertaken during earth-moving operations that have the potential to impact upon archaeological remains, according to a Written Scheme of Investigation approved by the local planning authority (in consultation with ERYC and NYCC planning

11 Archaeology and Cultural Heritage




archaeologists and English Heritage, as appropriate) in advance of construction. All archaeological remains identified during the watching brief shall be investigated in a manner and to an extent commensurate with their significance, up to and including formal excavation.

11.2.5 Remains of potential archaeological interest uncovered by any construction works not subject to active archaeological monitoring shall be protected and left open for inspection by the project archaeologist; who shall be informed promptly of any such discovery.

11.2.6 In the event that human remains are found during excavation work, they shall be isolated and protected from further disturbance immediately, and the local Coroner shall be informed promptly. If the human remains cannot be preserved in situ, an Exhumation Licence shall be obtained from the Ministry of Justice before being dug out from the ground. All terms of any Exhumation Licence shall be complied with. Human remains shall be excavated and recorded in line with current industry practice.

11.2.7 All finds that qualify as ‘treasure’ under the Treasure Act 1996 (as amended) will be excavated and removed from site to a place of safety on the day of their discovery, wherever it is practicable to do so; and where not, adequate security arrangements will be made to protect them in situ until they can be removed. The local coroner will be notified of all finds of treasure within 14 days of their discovery.

11.2.8 The results of all archaeological investigations will be assessed, analysed and reported upon in a manner commensurate with their significance, up to and including academic publication in monograph format or suitable peer-reviewed journal.

11.2.9 Within the Flexible Drainage Areas shown in Figure 2.1 – 2.10 the following assumptions relating to heritage assets have been applied which will be adhered to during construction (see also Sections 9.3.18, 10.3.27 and 12.3.14):

• No drainage works shall be undertaken within the boundary of sites designated for their cultural heritage value, including SAMs etc.

• All known previously recorded heritage assets will be avoided, where possible.




12.1 OBJECTIVE

12.1.1 Construction works will be carried out in such a way to ensure that, as far as reasonably practicable, disturbance to visual receptors and effects on landscape character identified in the baseline assessment (included in the Landscape and Visual Amenity Chapter of the ES (Document 6.11 ) are minimised.

12.2 LANDSCAPE

12.2.1 Before commencing works, or removing boundaries, hedges, trees, structures or features, a schedule of condition of existing boundaries, fences, hedges, trees, etc. will be made.

12.2.2 The fencing of fields affected by the construction works shall remain secure and stock-proof as necessary throughout the duration of the works including when removing fences, hedges, trees, buildings or any feature from within part of the working width or temporary construction areas.

12.2.3 Damage caused during the construction of the pipeline to permanent fences, hedges or walls shall be made good.

12.2.4 Where hedges are to be replaced, container grown hedging material shall be planted in accordance with National Grid specification NGC/SP/ENV/2 “Specification for Landscape Works”, or other specification acceptable to the landowner. The plants shall be a mix of indigenous species similar to that found in the existing hedgerow and protected by fences.

12.2.5 Permanent fences across the pipeline shall be of the same type and design as the existing fence. Where stone walls have to be replaced, only stone previously dismantled from the wall, or if necessary matching stone from a reputable source, shall be used. These walls shall be constructed over the pipeline trench supported on a concrete foundation.

12.2.6 Measures will be taken during the detailed design stage to avoid the removal of mature trees where practicable, particularly within the more sensitive landscape of the Yorkshire Wolds. All trees ‘at risk’ of removal will be surveyed in accordance with BS 5837:2012 prior to construction. Mature trees, which are removed and require replacement, shall be replaced with

12 Landscape and Visual Impact




four standards for every one mature tree removed. Mature trees are defined as:

• a tree with a stem diameter of 75mm (or greater) at 1.5 metres above the ground5; or

• a tree that has been coppiced and the number of shoots on the tree exceeds 10.

12.2.7 Where smaller trees are removed, they will replaced on a 1:1 basis.

12.2.8 National Grid guidance for tree planting in the vicinity of Operational Pipelines (NGC/SP/ENV/2) would be applied. This prohibits tree and shrub planting within 3m of a pipeline with the exception of hedgerows.

12.2.9 Where landowners do not agree to have replacement trees planted, any excess will be offered to a local woodland scheme/charity/community project.

12.2.10 No trees protected by Tree Preservation Order (TPO) at the time of the submission of the DCO will be removed. For example at Long Drax disused railway a non-open cut technique is proposed to install the pipeline beneath the railway embankment avoiding the need to remove trees protected under a woodland TPO and to the West of Hutton Cranswick the limits of deviation for the pipeline would accommodate a pipeline alignment between the trees avoiding those that are protected by TPO. Trees protected by a TPO subsequent to the submission of the DCO will be avoided where possible.

12.2.11 Landscape proposals around above ground installations have been designed to be in keeping with the character of the surrounding landscape. Predominantly native tree and shrub species have been selected.


Landscape Schemes

12.3.1 For above ground installations landscape planting drawings have been submitted with the DCO application (Documents 2.23, 2.30, 2.37, 2.44, 2.51). Landscape works will be carried out in compliance with the landscape planting schemes approved as part of the DCO.

12.3.2 For the Pumping Station a landscape planting scheme will be submitted to and approved by the relevant planning authority.

5 The Town and Country Planning (Tree Preservation)(England) Regulations 2012 – Reg 15(2) (a) Department for Communities and Local Government Protected Tree – A guide to tree preservation procedures April 2012 Section 18




12.3.3 Any tree or shrub planted as part of an approved landscape scheme that, within a period of 5 years after planting, is removed, dies or becomes, in the opinion of the relevant planning authority, seriously damaged or diseased, must be replaced in the first available planting season with a specimen of the same species and size as that originally planted, unless otherwise approved by the relevant planning authority.

12.3.4 Landscape planting schemes for above ground installations (including Drax PIG Trap, Camblesforth Multi-junction, and the three Block Valve sites) make provision for habitat enhancement through the planting of native tree and shrub species, hedgerows, species rich grassland seed mixes and the creation of features such as hedge banks e.g. at Camblesforth Multi-junction. The conceptual design for the Barmston Pumping Station includes proposals for green roofs on pump buildings.

12.3.5 To reduce visual prominence as far as feasibly possible the landscape schemes provide screen planting, earthworks and noise barriers which retain (as far as possible) the existing landscape character. The conceptual design for Barmston Pumping Station includes a mounded landscape within which the operational equipment is located to minimise views of the process buildings and above ground pipework.

Camblesforth Multi-junction

12.3.6 The landscape proposals for Camblesforth Multi-junction illustrate the following landscape measures to help integrate the AGI into the immediate landscape setting:

• A mixture of native woodland and native scrub planting to the boundaries of the site, to enhance visual screening provided by existing field boundary vegetation;

• Planting of hedgerows on hedge banks along the boundaries of the site, connecting to existing field boundaries to provide suitable cover habitat for Grey Partridge and other wildlife;

• Creation of a range of habitat for the benefit of biodiversity, including species rich grassland, wild flower meadow, scrub and woodland;

• Planting of advanced nursery stock trees in key locations to provide instant impact on completion of the planting, an instant (partial) screen in views from the public footpath to the south and residents to north west; and

• Creation of a grassland buffer, at the field margin, and between the eastern boundary of the site and the existing farm access track.




Block Valves and PIG Trap

12.3.7 The landscape proposals for each of the Block Valves, and Drax PIG Trap site illustrate the following landscape measures to help integrate the AGIs into the immediate landscape setting:

• A mix of planted mitigation, including native woodland, scrub, and hedgerow planting which will enclose each site, to provide long term visual screening and landscape integration, linking to existing woodland features adjacent to each site;

• Planting of advanced nursery stock trees in key locations to provide instant impact on completion of the planting, particularly where sites are located adjacent to existing public rights of way (e.g. at Skerne); and

• Creation of a range of habitats for the benefit of biodiversity including grassland, and herbaceous margins to proposed hedgerows and woodland areas.

Barmston Pumping Station

12.3.8 The conceptual design (Document 2.14) for the pumping station at Barmston incorporates a number of architectural design measures such as considered siting of elements within the site to restrict its visual prominence in views, architectural style of buildings and choice of materials for built structures to reflect the local landscape character, mounded landscape to enclose outdoor equipment and pipework and electricity substation to reduce their prominence in views. In addition the following landscape measures are to be considered during the development of the detailed design:

• Tree and hedgerow planting to supplement existing gappy hedgerows and reinforce the existing field and vegetation pattern;

• A mix of planted mitigation, including native woodland, scrub, and hedgerow planting to the site boundaries to reinforce existing tree planting /groups to the south and help integrate the site in views from north and west;

• Control and management of existing mature trees / small woodland areas within the site including creation of a new understorey and woodland edge as an enhancement to landscape character and for biodiversity benefit;

• Species rich grassland within the site to help maintain the rural character; and

• Creation of fire pond as a naturalistic water feature with native and marginal planting designed to integrate into the landscape and provide ecological benefit through habitat creation.




Other Control Measures

12.3.9 To minimise the loss of characteristic habitat the following measures will be implemented as necessary:

• Retain as much of the existing vegetation as possible (trees and hedgerows);

• Replant hedgerows to match with adjacent and surrounding field hedgerows in species composition or replace species poor with species rich (with agreement of the landowner);

• Road verges, which are recognised for their landscape and ecological value throughout the study area, will be reinstated and, where appropriate, enhanced through the addition of species rich grass mixes for the benefit of biodiversity.

• Reinstatement planting will be carefully designed to ensure compatibility with adjacent vegetation, using native species which reflect the existing species present in the vegetation which has been lost.

12.3.10 To minimise loss of boundary features the following measures will be implemented as necessary:

• Sections of other boundary features removed during construction, such as fences, will be replaced to match the original and/or adjacent boundary features.

12.3.11 To ensure re-establishment of reinstated vegetation:

• Protective fencing to areas of grassland reinstatement will remain in place for approximately 12 months to exclude livestock and allow re-seeded grass to establish (period usually determined by the landowner/tenant).

12.3.12 To minimise visual impacts and physical disturbance during construction the following measures will be implemented as necessary:

• Create a buffer between the proposed works and residential properties/amenity areas using good landscape design;

• Avoid anything other than emergency lighting. Where lighting is required, implement an appropriate lighting scheme that minimises light pollution to reduce the incidence of visual intrusion to sensitive receptors.

• Position of site compounds within the landform where possible to provide natural screening.




12.3.13 Boundary marker posts and aerial marker posts will be located at some boundaries to aid aerial surveillance and ground based monitoring and to alert people to the presence of the pipeline. The location and design of these markers will be selected to minimise intrusion on the landscape while serving their function.

12.3.14 Within the Flexible Drainage Areas shown in Figure 2.1 – 2.10 the following assumptions have been applied relating to landscape issues which will be adhered to during construction (see also Sections 9.3.18, 10.3.27 and 11.2.9):

• No drainage works shall be undertaken within the boundary of sites designated for their landscape value.




13.1 OBJECTIVE

13.1.1 To minimise the volume of waste generated and maximise resource efficiency throughout the construction process by applying the waste hierarchy principle. To protect people and the environment through the identification and control of contamination if encountered during construction.

13.2 WASTE MANAGEMENT

13.2.1 The Contractors will develop a Waste Management Plan (WMP) which will set the framework for the management of wastes generated during the construction process. It will document the decisions taken during the planning and design stages to minimise waste and set objectives and targets for the main waste types. It will also identify the following:

• Responsibilities within the construction team for waste management. • The types of waste and the quantities likely to be generated. • Measures to be adopted during construction to minimise waste

generated. • Opportunities for recycling and/or reuse. • Proposed treatment and disposal sites together with details of their

Environmental Permit. • Provisions for staff training and use of the WMP.

13.2.2 It will also record each movement of waste (including the reuse or recycling of materials on site) in accordance with the Waste (England and Wales) Regulations 2011 (and its amendments) and the arrangements for auditing the actions of other parties in the waste handling chain. Waste will only be transported by appropriately licensed carriers. The WMP will be updated as the detailed design evolves and the main contracts are let.

13.2.3 The Contractors’ WMP will clearly identify wastes that are likely to be produced during the construction phase the quantities likely to be generated and proposed treatment or disposal route.

13.2.4 The aim of the WMP will be to minimise the volume of waste generated and maximise resource efficiency by applying the waste hierarchy (reduce – reuse – recycle – energy recovery - responsible disposal).

13 Disposal of Waste and Contaminated Materials




13.2.5 Provision will be made for the recycling of wastes including scrap metal, timber, paper, cardboard, plastics, toner cartridges, batteries in addition to waste oils from equipment and machinery where local schemes are available.

13.2.6 The main wastes that would be generated from the construction of the Project include:-

• Clearance of the working width. The working width shall be cleared of crops, brush, hedges, fences, non-saleable timber, tree roots and debris, and materials arising shall be disposed of accordingly.

• Where horizontal directional drilling (HDD) or microtunnelling takes place drilling and tunnelling wastes would comprise solids (shale, sandstone, chert, etc.) and associated drilling muds. Arisings will be stored in a bunded area on an impermeable geotextile where necessary. The drilling wastes would be used on site for landscape buffers and earth mounding as far as reasonably practicable, or alternatively, (material containing bentonite slurry that cannot be reused) will be removed from the site.

• Topsoil and excavated material (sand and gravel and chalk) would be reinstated, any excess would be used on site for landscape earth mounding such as at the pumping station; suitable material would be spread within the site for example to form a crown over the pipeline to allow for settlement; the intension would be not to remove soils from site and to reuse materials where possible.

• Portable toilets will be provided on the working width and at the site construction yard. They will be emptied regularly by a specialist contractor and the waste will be disposed of in accordance with the Waste Management Plan.

• Toilet facilities at the site offices and site construction yard may be connected to the sewer system or a septic tank will be installed and emptied regularly by a suitably licensed and registered waste contractor.

13.2.7 Wastes of different types will be segregated on site through the use of labelled skips, containers or bays indicating the types of waste each may accept and also the European Waste Code. Waste containers shall be in good condition and covered to prevent leachate spillage, waste escaping or ingress of rain water as appropriate.

13.2.8 Waste disposal will be carried out in accordance with the Waste (England and Wales) Regulations 2011 and Waste Management: The Duty of Care – A Code of Practice (1996) or subsequent amendments, as appropriate to current legislation.




13.2.9 Provision will be made for the correct storage and disposal of Hazardous Wastes as defined by and in accordance with the Hazardous Waste (England and Wales) Regulations 2005 and amendments. The contractors will register the site as a producer of hazardous waste prior to any transfer of hazardous waste from site and a Hazardous Waste Consignment Note will accompany every transfer. In accordance with the Waste Acceptance Criteria (WAC) hazardous waste may need to be treated, and then tested, before disposal.

13.2.10 Appropriate site investigation and materials testing will be undertaken by specialist consultants prior to construction commencing to identify any ‘hazardous waste’ as defined in The Hazardous Waste (England and Wales) Regulations 2005 as amended and The List of Waste Regulations 2005 as amended so that it can be appropriately managed and disposed of.

13.3 CONTAMINATED LAND

13.3.1 No contaminated land has been identified within the application boundary during studies undertaken for the ES and engineering surveys.

13.3.2 Although no areas of contaminated land have been identified, to ensure that construction workers are not exposed to contaminated land, a watching brief will be maintained during excavation works for potential sources of contamination such as Made Ground, visual or olfactory evidence of hydrocarbons etc. In the unlikely event that areas of potentially contaminated ground and/ or water are encountered they will be sampled and undergo appropriate laboratory analysis.

13.3.3 Should contamination be confirmed, measures will be put in place to protect construction workers; for the handling and treatment of the contaminated material; to prevent the spread of the contaminants; and to prevent contamination of controlled waters.

13.3.4 A risk assessment will be undertaken in accordance with the Health and Safety at Work Act and an appropriate method developed to ensure that construction workers’ exposure to potentially harmful substances is restricted to a safe level. Construction Design and Management practices would be applied.

13.3.5 Measures will involve, as necessary, removal and/or treatment of the contamination:

• Dust suppression measures to reduce the generation of dust from excavated contaminated soils, for example impermeable covers spread over mounds of bare contaminated soil during dry conditions.




Implementation of these simple measures can reduce the risk of effects to construction workers and adjacent site users from potentially contaminated dusts;

• A road sweeper would be deployed to prevent spreading of contamination onto off-site roads.

• Vehicles carrying contaminated soils off-site would only to be loaded up to appropriate levels and be covered to prevent conditioned sediments dropping onto roads;

• Where piled foundations are used on contaminated land they would be designed in accordance with the Environment Agency guidance document ‘Piling and Penetrative Ground Improvement Methods on Land Affected by Contamination: Guidance on Pollution Prevention’; and

• Containment barriers would be installed to prevent contaminants that may migrate along the Pipeline to uncontaminated soils or Controlled Waters. The nature of the barriers would depend on the nature of the mobile contaminants, however, the barrier may simply consist of clay walls within and across the trench sealed around the exterior of the pipe, to act as a water stop and prevent flow of contaminants beyond the boundary of those areas identified as being contaminated.

13.3.6 To avoid contamination from construction materials, material imported to site, such as stone for hardstanding will be natural quarried material or, if recycled, the material will undergo chemical testing in advance to ensure it is contaminant free. The suite of contaminants and site use criteria will be agreed with regulatory authorities (Environment Agency), in order to demonstrate that the material is suitable for use on site and does not pose a risk to construction workers or the environment.


13.4.1 The following measures will be adopted as necessary:

• National Grid and its contractors will manage construction/excavation wastes generated at the site within the relevant regulatory controls and, as far as reasonably practicable, in accordance with the waste hierarchy. Further details will be set out in the Contractor's Waste Management Plan.

• Excess spoil arising from the works will be used on site (e.g. at the Barmston Pumping Station site), exported from site for use in construction /reclamation projects (subject to EA consent), or recycled at an appropriate facility. Where this is not possible (e.g. due to the presence of contaminants) the spoil will be disposed of at a licensed facility.




• In the event that contamination is found at any time when carrying out the approved development that was not previously identified it must be reported in writing immediately to the relevant planning authority. An investigation and risk assessment must be completed, in accordance with a scheme approved by the relevant planning authority under Requirement 17 of the draft DCO (Document 3.1); to assess the nature and extent of any contamination on the site, whether or not it originates on the site. The investigation and risk assessment must be undertaken by competent persons and a written report of the findings must be produced.

• Where remediation is required a detailed remediation scheme to bring the site to a condition suitable for the intended use must be prepared, and submitted for the written approval of the relevant planning authority in accordance with Requirement 17 of the draft DCO (Document 3.1).




14.1 OBJECTIVE

14.1.1 Construction works will be carried out in such a way as to ensure that disturbance to agricultural operations and other land uses, is controlled and that appropriate measures are adopted to protect the agricultural land and soils of these areas in accordance with relevant good practice and statutory provisions/legislative requirements.

14.2 AGRICULTURE AND LAND USE

14.2.1 The land crossed by the Onshore Scheme is predominantly agricultural consisting of a mixture of arable and pasture, with some specialist biomass crops including Elephant Grass (Miscanthus) and short rotation willow coppice. The area of land take required for construction will be kept to a minimum, within the constraints of safe working practise.

14.2.2 Land will be reinstated to the original land use after construction in line with landowner/tenant requirements. During the reinstatement, measures to ensure that the pipeline has no long term effects on grazing, crop yield and quality will be applied (see Soils below). Subject to the landowner/tenant requirements, pasture land will be sown with an appropriate seed mix and if required, weed control will be agreed with the landowner/tenant. Arable land will be returned to landowners for immediate cultivation and sowing. In grassland pasture the working width fencing may remain in place for a period after construction to exclude livestock and allow the newly sown sward to establish. Field boundaries severed by the works will be reinstated and maintained for five years following construction. Physical loss or damage arising from construction will be made good or, failing this, reasonable compensation will be paid.

14.2.3 Reasonable precautions will be taken to avoid obstruction to or interference with farm practices including:

• early consultation with farmers to minimise effects on their farming activities;

• arrangements for fencing of the working width / works areas, farm accesses, access to severed fields and temporary supply of services and water supplies for livestock and irrigation, land drainage and

14 Agriculture Land Use and Soils




reinstatement will be agreed prior to construction (pre-entry agreements) and implemented by the Contractor;

• a record of condition survey will be undertaken prior to construction to assess crops, condition of field boundaries etc and agreed with the occupier to facilitate reinstatement to original conditions.

14.2.4 To prevent the spread of animal or plant diseases; biosecurity measures will be used, as appropriate, in accordance with guidance published by Defra. Site fencing that has been in contact with livestock will not be re-used elsewhere on site.

14.2.5 Discussions will be held with the individual landowners to ensure that disruption to any Agri-environment Schemes or Single Farm Payment Contracts is minimised. Habitats or features relevant to stewardship payments that are affected by construction works will be reinstated.

14.2.6 None of the land within the Onshore Scheme application boundary currently has organic status, however, if there is any concern of herbicide drift, alternative organic assured weed control solutions will be used, such as hot oil weed control.

14.3 SOILS

14.3.1 Measures for the care and handling of soil applied during pipeline construction include:

• Topsoil will be stripped on a field by field basis and stored in bunds adjacent to the area stripped to ensure the soil is returned to the same area during reinstatement;

• Topsoil will be stripped using appropriate machinery and stored separately to ensure no mixing of topsoil and subsoil;

• Storage of topsoil in bunds no more than 4m high (to minimise risk of the development of adverse conditions within the topsoil heap) to prevent loss of fertility and structure;

• Only handling topsoil in suitable weather conditions to prevent loss of soil structure;

• Use of appropriate machinery and/or protective matting to prevent compaction during topsoil stripping;

• No traffic / plant movement on the topsoil storage bund, to prevent compaction;

• Control of weed growth on the topsoil storage bund (herbicides used should readily break down in the soil, such as glyphosate);

• Restriction of trafficking across bare soils in wet ground conditions;




• Use of bog mats, stone roads, temporary roads or similar where required to minimise ground pressures of vehicles and prevent compaction of subsoil from construction traffic in wet or soft ground conditions;

• Use of deep-tine cultivation, ripping, subsoiling or similar soil loosening techniques to alleviate compaction of subsoil, particularly over the running track, prior to reinstatement of the topsoil;

• Subsoil removed from the trench will be stored on the opposite side of the working width, separate from the topsoil;

• Where there are distinct layers in the subsoil, different subsoils will be stored separately to aid successful reinstatement;

• Trench materials and subsoil will be replaced in the trench over the installed pipe in the sequence they were removed to ensure layers are compatible with the adjacent soil profile;

• Topsoil will be reinstated in suitable dry conditions to prevent compaction and spread evenly over the working width to match the adjacent surface levels.

14.3.2 Pre- and post-construction drainage will be installed to maintain the integrity of the field drainage system and aid construction and reinstatement. (see Section 9.3 above).

14.3.3 In relation to the pipeline works, no earth moving works will take place outside of the months of April to September inclusive unless agreed with individual landowners.

14.3.4 At above ground installations, such as Barmston Pumping Station, where works will be undertaken during the winter months, topsoil stripping and handling operations will be undertaken during the period between the beginning of March and end of September during suitable weather conditions to prevent loss of soil structure.

14.3.5 A Pollution Prevention and Control Plan will be prepared and implemented with reference to the Environment Agency’s Pollution Prevention Guidelines (PPG), to reduce the risk of contamination to soils. (Refer to Section 9.3).




15.1 OBJECTIVE

15.1.1 Construction works will be carried out in such a way as to ensure that disturbance to the coastal marine environment and nearby ecological and cultural heritage interests, is controlled and that appropriate measures are adopted to protect the fisheries, ecology and recreational amenity of these areas in accordance with relevant good practice and statutory provisions/legislative requirements.

15.2 LANDFALL

15.2.1 The intertidal zone will form the interface between the onshore pipeline works and the offshore pipeline. Specialist engineers will be employed to design and manage the landfall of the offshore pipeline, the installation of the pipeline beneath the coastal cliffs and the tie-in connecting the onshore section of the pipeline to the offshore pipeline which is likely to take place in the intertidal zone. Specialist contractors will be employed to undertake the works.

15.2.2 The DCO will include provision for a deemed Marine Licence to carry out these works subject to the requirements set out in Schedule 10 of the draft DCO(Document 3.1) to be discharged by the Marine Management Organisation (MMO). These include the submission of a construction and monitoring programme; construction method statement; environmental management plan (including marine pollution contingency plan, chemical risk analysis, waste management and disposal arrangements, roles and responsibilities, archaeological exclusion zones); and written scheme of archaeological investigation for the approval of the MMO.


15.3.1 To prevent adverse effects on the coastal environment and in particular coastal erosion and the dynamic coastal processes of the Holderness Coast the following measures will be adopted as necessary:

• Landfall construction techniques which avoid interaction with the cliff and as much as possible of the beach surface;

15 Protection of Coastal Environment




• The timing of construction activities to avoid winter wave conditions which could exacerbate effects on sediment movement from cofferdam construction and use;

• Should a cofferdam be used, the storage of excavated sediment (sand and boulder clay) from the beach at a suitable location above the high water mark, and where possible outside of the swash zone (i.e. the zone of wave action on the beach), such that losses of the excavated sediments are minimised; and

• Observation of beach levels around the cofferdam during construction, and the mechanical movement of material to the down-drift side of the cofferdam should this be necessary e.g. if build-up of sediment trapped by the cofferdam up drift leads to noticeable sediment starvation on the down drift side.

• In advance of any works taking place, the Contractor will have in place an environmental management plan for this aspect of the project construction, which will detail, inter alia, a marine pollution contingency plan, a chemical risk analysis, waste management arrangements and the locations of archaeological exclusion zones.

• Prevention of Pollution from vessels - construction vessels will be MARPOL compliant.

• Minimising disruption of bass net fishery - Liaison will be held with the North Eastern Inshore Fisheries and Conservation Authority (NE-IFCA) and individual bass net fishing licence holders. Both will be kept informed as to the timing of the works, and the works will be timed, where possible, to minimise effects on fishing activity.

• To ensure rapid recovery of sub-tidal sediments and habitat - when excavating the pipe reception pit, materials will be segregated by surface and deeper material and will be returned on completion of the works to the same profile.

• Protection of maritime cultural heritage - Joint Nautical Archaeology Policy Committee (JNAPC) guidelines 2008 to be followed (or any updated guidelines if applicable).

• Minimising the risk of injury to marine mammals from piling noise - If piling is required to construct a tie-in / reception pit or cofferdam constructed into sub-tidal area, JNCC guidelines (August 2010) for pile driving to be followed (or any updated JNCC guidelines if applicable).

• The landfall will be designed to ensure that there is no risk of the pipe being uncovered by coastal processes for the duration of the scheme design life.

• The closure of a section of Barmston Sands will be kept to the minimum area required to ensure the safety of construction workers and the general public.




16.1 CODE OF CONSTRUCTION PRACTICE

16.1.1 Requirement 14 of the draft DCO (Document 3.1) requires that construction work must be carried out in accordance with this Code of Construction Practice. This CoCP is a minimum standard that the Contractor(s) will sign up to. It will form the basis for the Contractors’ construction phase Environmental Management Plan. Contractors may exceed these minimum standards voluntarily through their own EMP.

16 Conclusions




Bat Conservation Trust ‘Bat Surveys. Good Practice Guidelines’. BCT, London (2012)

British Standards Institution BS 5228-1:2009 Code of practice for noise and vibration control on construction and open sites - Noise

British Standards Institution BS 5228-2:2009 Code of practice for noise and vibration control on construction and open sites - Vibration

British Standards Institution BS 5837:2012 Trees in relation to design, demolition and construction - Recommendations

CIRIA (Construction Industry Research and Information Association) document C648 ‘Control of water pollution from linear construction projects’ Technical Guidance (2006)

CIRIA document C649 ‘Control of water pollution from linear construction projects’ Site Guide (2006)

CIRIA document C697 The SuDS Manual (2007)

Department for Transport Traffic Signs Manual Chapter 8 Traffic Safety Measures and Signs for Road Works and Temporary Situations Part 1: Design (2009)

Department for Transport Traffic Signs Manual Chapter 8 Traffic Safety Measures and Signs for Road Works and Temporary Situations Part 2: Operations (2009)

English Nature Great Crested Newt Mitigation Guidelines (2001)

Environment Agency Pollution Prevention Guidelines: PPG 1: General Guide to the Prevention of Pollution PPG 2: Above Ground Oil Storage Tanks PPG 5: Works and Maintenance in or near water PPG 6: Working at construction and demolition sites PPG 7: Refuelling Facilities PPG 13: Vehicle washing and cleaning PPG 26 ‘Storage and handling of drums and intermediate bulk containers’ Getting Your Site Right: Industrial and Commercial Pollution Prevention

17 References




Joint Nature Conservation Committee (JNCC) Statutory Nature Conservation Agency Protocol for minimising the risk of injury to marine mammals from piling noise. (August 2010)

Joint Nautical Archaeology Policy Committee (Maritime Cultural Heritage and Seabed Development JNAPC Code of Practice for Seabed Development (2008)

National Grid specification NGC/SP/ENV/2 “Specification for Landscape Works”

National Grid management procedure NGC/MP/ENV/3 “Management Procedure for Maintenance of Landscaped Sites”

WCRU, Strachen R, Moorhouse T, Gelling M, Water Vole Conservation Handbook – Third Edition (2011)




Figures 2.1 – 2.10 Environmental Commitments

This document has been prepared by AECOM for the sole use of our Client (the "Client") and in accordance with generally accepted consultancy principles, the budget for fees and terms of reference agreed between AECOM and the Client.

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Any information provided by third parties and referred to herein has not been checked or verified by AECOM, unless otherwise expressly stated in the document. No third party may rely upon this document without the prior and express written agreement of AECOM.

5th Floor,2 City Walk,LEEDS, LS11 9AR

Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:

Project: YORKSHIRE AND HUMBER CCSCROSS COUNTRY PIPELINE

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P

P

P

Camblesforth Multi-Junction

Drax PIG Trap Site

Carr Dike committednon open cut crossing

Lendall Drain committednon open cut crossing

Mature trees to be retained / avoidedalong Pear Tree Avenue

Mature trees to be retained / avoidedalong disused railway embankment

Mature trees to be retained / avoidedalong eastern field boundary of TCA2

Willow Row drain committednon open cut crossing

Mature field trees to be retained /avoided

Mature trees along Church Dike Laneto be retained / avoided

River Ouse committednon open cut crossing

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL

1:10,000Scale at A1:

Ü

Client:Co-financed by the European Union's EuropeanEnergy Programme for Recovery. ENVIRONMENTAL COMMITMENTS

MAP 1 OF 10

LegendApplication BoundaryAbove Ground Installation Site (AGI)Temporary Construction Area - AGITemporary Construction Area - PipelineTemporary Construction CompoundFlexible Drainage AreasHedges and Trees Species PoorHedges and Trees Species RichRunning Water

!( Broadleaved Tree identified - location indicativeP Trees with bat roosts to be retained

CC CCDAM DAM

0 0.5 1km

A1PINs Reference: Figure Number:EN070001 2.1

Reproduced from 1:10,000 Ordnance Survey Map with the permission of Ordnance Survey on behalf of The controller of Her Majesty's Stationery Office. ©Crown Copyright. National Grid Carbon Limited. Licence Number 100055005

JUNE 2014


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Design:Title:


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Of the mature oaks along the drain,only one to be removed

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 2 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

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App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


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P

P

Tollingham Block Valve

Mature tree to be retained /avoided

River Foulness committednon open cut crossing

Mature trees to be retained /avoided within hedgerow south

of Tollingham Block Valve

Mature trees to be retained /avoided

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 3 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(

!(

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P

P

P

Mature trees to be retained / avoidednorth of Skiff Lane

Mature trees along Lock Laneto be avoided/ retained

Mature Trees to be retained /avoided

Disused Market WeightonCanal committed non open

cut crossing

Mature trees along Sand Laneto be avoided/ retained


DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 4 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(!(!(!(

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P

P

Mature trees to beretained / avoided

Mature trees to be retained / avoidedeast of Cliffe Road

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 5 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(

!(

!(!(!( !(!(

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P

Dalton Block Valve

Mature trees along Park Roadto be avoided/ retained

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 6 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(!(

!(

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Mature trees to be retained /avoidedhowever some lopping may be required

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 7 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(!(!(!(

!(

!(

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P

PMature trees protected by TPOto be avoided / retained


Northfield Beck committednon open cut crossing

Within hatched area no buildingsto be demolished as part of the

Onshore SchemeDRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 8 OF 10



CC CCDAM DAM



0 0.5 1km

JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(!(

!(

!(!(!(!(!(!(!(!(

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!(

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!(

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!(

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!(

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!(

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!(

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!(

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!(

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!(

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!(

!(

!(

!(

!(

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!(

!(

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!( !(

!(

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!( !(!(!(

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!( !(!( !(!(

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!(!(

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!(

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!( !( !( !( !( !(

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!(

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!(

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!(

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!(

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!(

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!(

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!(

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Skerne Block Valve

Main Drain committednon open cut crossing


Mature tree on old hedge boundaryto be avoided / retained

Driffield Canal committednon open cut crossing

River Hull committednon open cut crossing

Kelk Beck committednon open cut crossing

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL


Ü


MAP 9 OF 10



CC CCDAM DAM


0 0.5 1km


JUNE 2014


Chk'd:

Date:

Drawn:

App'd:



Tel: +44 (0) 113 391 6800Fax: +44 (0) 113 391 6899

www.aecom.com

Design:Title:


!(!(!(!(!(

!(

!(!(

!(!(

!( !(

!(

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!(

!(

!(

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!(

!( !(!(

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!(

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!(!( !(

!(!(

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!(!(!(

!(

!( !(!( !(

!( !(!( !( !(

!( !( !( !( !(!( !( !(

!(!(

!(!(

!( !( !( !( !(

!( !( !( !( !(

!(!(!(

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!( !(!(

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!(

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!(

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!( !( !( !(

!(

!(

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!(

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!(

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!(

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!(

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!(

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!(

!(

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!(

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!(

!(

!(

!(

!(

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!(

!(

!(

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!(

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!(

!(

!(

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!(

!(

!(

!(

!(

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!(

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!(

!(

!(

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!(

!(

!(

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!(

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!(

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!(

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!(!(

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!(

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!(

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!(!(

!(!(!(!(!(!(!(!(

!(!(!(!(!(!(

!(

!( !(!(!(!(

!(

!(

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!(!(!(!(

!(!(!(!(!(!(!(!(!(

!(

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!(

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Barmston Pumping Station

Gransmoor Drain committednon open cut crossing

Mature trees on southern boundaryto be avoided/ retained

Existing buildingto be retained

Existing drain to be retainedas part of Barmston Pumping

Station design

DRIFFIELD

GOOLE

MARKETWEIGHTON

BEVERLEY

HULL

Scale at A1:

Ü


MAP 10 OF 10

LegendApplication BoundaryAbove Ground Installation Site (AGI)Temporary Construction Area - AGITemporary Construction Area - PipelineTemporary Construction CompoundFlexible Drainage AreasTo be used for pipeline / landfall construction onlyHedges and Trees Species PoorHedges and Trees Species RichRunning Water


CC CCDAM DAM

1:10,000



0 0.5 1km

JUNE 2014