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1 Introduction
1.1 Background, Aims and Objectives
1.2 Roles and Responsibilities
2 Requirements
2.1 Project Specifics (Constraints, Mitigation and Planning Conditions)
2.2 Site Induction
2.3 Reporting, Correspondence and Records
2.4 Pollution Prevention and Mitigation
2.5 Temporary Drainage
2.6 Water Quality Monitoring
2.7 Waste Management
2.8 Ecological and Ornithological Protection and Biodiversity Enhancement
2.9 Land Use and Access
2.10 Forestry Works
2.11 Excavated materials
2.12 Archaeology
2.13 Landscaping, Reinstatement and Restoration
2.14 Environmental Incident and Emergency Response
2.15 Checklists
3 Outline Construction Methods
4 References
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3Outline Construction Methods

General Requirements

3.1.1                         The following sections describe the general methods of construction which are to be stipulated in the Employer’s Civil Technical Requirements generally included in the Civils Work Contract forming the basis for the Principal Contractor’s detailed design.

Working Hours

3.1.2                       Working hours for construction activities will be agreed through the planning conditions with THC. In the event of work being required outwith standard hours, e.g., abnormal load deliveries THC would be notified prior to these works taking place and their approval sought.

3.1.3                       Any plant and equipment normally required for operation at night (23:00 - 07:00), e.g. generators or dewatering pumps, shall be silenced or suitably shielded to ensure that the night-time lower threshold of 45 dB, LAeq,night, as defined in BS5228, shall not be exceeded at the nearest noise-sensitive receptors.

Plant and Equipment

3.1.4                       The works shall be undertaken in strict accordance with the Provision and Use of Work Equipment Regulations (PUWER) 1998 (as amended) covering all types of plant and equipment found on construction sites.

3.1.5                       All site operatives will be appropriately trained and experienced and hold certification of training achievement issued by Construction Industry Training Board or other construction industry approved schemes.

3.1.6                       Best practicable means of reducing noise emissions from plant, machinery and construction activities, as defined in BS5228 will be employed.

3.1.7                       A non-exhaustive list of plant that may be utilised during the construction activities detailed in this Construction Method Statement is as follows; 360° tracked excavators, tipper trucks, dumper trucks, tractor dozers, vibratory rollers, ground ripping plant, mobile crushers and screeners.

Temporary Construction Compounds

3.1.8                       The Principal Contractor designs and constructs an area of hardstanding, as specified in the Civil Works Information, of sufficient load bearing capacity, as the construction compound(s). Where appropriate a geo-textile layer is used to maximise the effectiveness of stone removal when the compound is removed.

3.1.9                       The compound(s) include all Site accommodation and welfare facilities, bunded fuel tanks and other liquid storage areas with segregation, bunded refuelling areas, general and protected storage areas, vehicle parking, security, lighting and services, communications and laboratory/testing or holding facilities, signage, pedestrian and vehicular circulation routes, and safety barriers. The Principal Contractor provides recycling facilities at the Site compound and professional collection thereof.

3.1.10                    The compound(s) are free draining with oil interceptors and contain a bunded area for maintaining vehicles and plant, or other pollution control measures, as appropriate/required to protect existing watercourses and PWS.

3.1.11                      The typical construction activities associated with the temporary construction compounds are:

  • Stripping of any topsoil and careful stockpiling of this material as per CEMP requirements.
  • Excavating the remaining superficial soil materials and stockpiling of this material on the surrounding undisturbed area in accordance with CEMP requirements.
  • Installation/construction of temporary surface water drainage in accordance with CEMP requirements.
  • Laying and compacting crushed rock in layers to form a hardstanding. Crushed rock material will have low fines content to reduce the risk of sediment contamination.
  • Delivery of offices, mess area, toilets, and associated infrastructure on flat bed lorries.
  • Erection of offices, mess area, toilets, and installation of all bunded areas to contained generator and fuel stores.
  • Erection of fencing around the perimeter of the temporary construction compounds.
  • Following the completion of all construction activities, the temporary construction compounds shall be reinstated according to the methods set out in the CEMP.

3.1.12                    Welfare facilities will be provided for site operatives under the Construction (Design and Management) Regulations 2015 including sanitary conveniences, washing facilities, drinking water, changing rooms and accommodation for clothing not worn during working hours and rest facilities.

3.1.13                    Where chemical toilets are required during the construction phase these will be located on suitable ground and in discussion with SEPA. The waste will be emptied on a regular basis by a registered waste disposal contractor. Toilets will be located within the temporary construction compound areas.

3.1.14                    Potable water will be either supplied via a PWS or imported to site. The water will be used for messing purposes during the construction phase.

3.1.15                    If additional water is required to be impounded and/or abstracted from site water bodies for site-based activities (i.e. dust suppression, etc), the CAR Regulations apply, and advice will be sought from SEPA (where necessary) prior to any impoundment/abstraction.

3.1.16                    The duration of the works will extend into winter months. External lighting will be required to be provided at the temporary construction compounds. Lighting columns will be erected in proximity to security gates and any site offices/welfare facilities and stores. Compound lighting shall face inwards to reduce light pollution and environmental impacts.

3.1.17                    All areas of the site including accommodation areas shall be kept clean and tidy with a regime of good housekeeping established to facilitate mobility of personnel and plant/equipment around the site and eliminate potential hazards and environmental pollution.

Site Access

3.1.18                    Sufficient signage will be employed on site, for both site personnel and the public, to clear define the boundary of the works where they coincide with areas accessible to the public.

4References

TWP (2025).  Ayre Offshore Wind Farm Onshore Infrastructure EIA Report.

Legislation

The Control of Substances Hazardous to Health (COSHH) Regulations 2002

The Construction (Design & Management) Regulations 2015.

The Management of Extractive Waste (Scotland) Regulations 2010.

The Provision and Use of Work Equipment Regulations 1998 (as amended).

The Water Environment (Controlled Activities) (Scotland) Regulations 2011 (as

amended).

Guidance

The Water Environment (Controlled Activities) (Scotland) Regulations 2011, A

Practical Guide, SEPA, Version 9.4, July 2024.

SEPA Guidance for Pollution Prevention (GPPs) & Pollution Prevention Guidelines

(PPGs):

  • GPP 1 Understanding your environmental responsibilities – good environmental practices
  • GPP 2 Above ground oil storage tanks
  • PPG 3 Use and design of oil separators in surface water drainage systems
  • GPP 4 Treatment and disposal of wastewater where there is no connection to the public foul sewer
  • GPP 5 Works and maintenance in or near water
  • PPG 6 Working at construction and demolition sites
  • PPG 7 Safe Storage - The safe operation of refuelling facilities
  • GPP 8 Safe storage and disposal of used oils
  • GPP13 Vehicle washing and cleaning
  • PPG18 Managing fire water and major spillages
  • GPP21 Pollution incident response planning
  • GPP22 Dealing with spills
  • GPP26 Safe storage - drums and intermediate bulk containers
  • Duty of Care for waste

British Standards Institute (BSI):

  • Code of Practice for Earth Works, BS6031:2009
  • Code of practice for noise and vibration control on construction and open sites.
  • Noise, BS5228-1: 2009.

CIRIA Publications:

  • Control of Water Pollution from Construction Sites – Guide to Good Practice (SP156)
  • Control of Water Pollution from Construction Sites – Guidance for Consultants and Contractors (C532)
  • Control of Water Pollution from Linear Construction Projects – Technical Guidance (C648)
  • Control of Water Pollution from Linear Construction Projects – Site Guide (C649)
  • Culvert Design Guide, C689, CIRIA, 2010.
  • Environmental Good Practice – Site Guide (C650)
  • The SUDS Manual (C753)
  • Site Handbook for the Construction of SUDS (C698)

Additional Relevant Guidance

  • Institute of Environmental Management and Assessment (IEMA) Practitioner
  • Series No.11: Waste Management: A Guide for Business in the UK, September 2008.
  • WRAP (Waste & Resources Action Programme): http://www.wrap.org.uk/construction/tools_and_guidance/site_waste_2.html
  • www.wasteonline.org.uk
  • www.wasteawarescotland.org.uk
  • www.defra.gov.uk/Environment/waste/

 

 

ANNEX A. COMMITMENTS REGISTER

ANNEX B. POLLUTION PREVENTION PLAN

ANNEX C. CONSTRUCTION NOISE AND VIBRATION MANAGEMENT PLAN

ANNEX D. WATER QUALITY MONITORING PLAN

ANNEX E. SITE WASTE MANAGEMENT PLAN

ANNEX F. HABITAT MANAGEMENT PLAN; SPECIES PROTECTION PLANS; BREEDING BIRD PROTECTION PLAN

ANNEX G. ACCESS PLAN

ANNEX H. FELLING AND REPLANTING PLAN

ANNEX I. PEAT MANAGEMENT PLAN

ANNEX J. REINSTATEMENT AND RESTORATION PLANS

ANNEX K. ENVIRONMENTAL INCIDENT AND EMERGENCY RESPONSE PLAN

 

 

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Figures ▼
Tables ▼
Table 1.1
Key Project Roles and Responsibilities
Table 2.1
Required Contractor’s Information
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