Energy & Sustainability Statement Development Plot B3

Plot B3, First Point Business Park, Balby, Doncaster Our Ref: 1727

EPS Group, Unit 4 The Glade Business Centre, Forum Road, Nottingham, NG5 9RW

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Energy & Sustainability Statement

Development Plot B3, First Point Business Park, Balby,

Doncaster

Date: April 2016

www.epsgroup.co.uk

http://www.epsgroup.co.uk/

http://www.epsgroup.co.uk/



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Project Contact Details

Client: Walker & Son (Hauliers) Ltd Ollerton Road Tuxford Newark NG22 0PQ

Architect: Terry Malpass Associates Limited 107 Huntley Avenue Spondon Derby DE21 7DW

Report Prepared By:

Energy Performance & Sustainability Group Ltd Unit 4, The Glade Business Centre Forum Road Nottingham NG5 9RW Tel: 0115 7270599 Lead Consultant: Mr Jamie Holmes, MSc, BSc (Hons), Dip DEA OCDEA Issue Details:

Version Date Author Checked Details

1 15/04/2016 JH AB Issued for comments



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Table of Contents

Section 1 - Introduction

Section 2 – Planning Policy Context

Section 3 – Proposed Energy Strategy and Performance

Section 4 – Review of Low Carbon & Renewable Technologies

Section 5 - Calculated Energy Performance (Illustrative)

Section 6 – BREEAM Principles

Appendix 1: Illustrative SBEM (BRUKL) Calculations



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Executive Summary

This report has been commissioned in response to the Sustainability and Low Carbon Planning Policy requirements of Doncaster Metropolitan Borough Council. In accordance with the underlying principles of the widely accepted Energy Hierarchy proposed development is predicted to emit at least 18.04% less carbon dioxide than would ordinarily be permitted by the standard requirements of Part L2A (2013) of the Building Regulations. This reduction in emissions is achieved through the adoption of enhanced insulation standards, improved HVAC efficiencies and increased lighting efficiencies and controls. Furthermore, through the installation of split style ‘air to air’ heat pumps, 38.15% of the developments regulated energy consumption will be provided from low carbon technologies. The development will also seek to adopt standards and principles which would typically be associated with a BREEAM rating of 'Very Good' upon completion.



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1.0 Introduction

1.1 EPS Group have been appointed to provide an Energy and Sustainability Statement to support the planning application for the proposed development of new warehouse facility at Plot B3, First Point Business Park, Balby, Doncaster.

1.2 The planning application proposes to construct two adjoining warehouse units each with a

separate office area. It is noted that the warehouse space will be unconditioned and that heating, cooling and hot water will only be supplied to the thermally separated office areas.

1.3 In light of the above, it is noted that only the office areas of the proposed development will need to comply with the requirements of Approved Document Part L2A of the Building Regulations if planning is permitted.

1.4 The proposed development’s regulated energy consumption has therefore been assessed in accordance with Approved Document L2A 2013 of the Building Regulations using the Non-Domestic National Calculation Method (NCM) - SBEM v5.2g (Simplified Building Energy Model). This was used to determine the predicted annual energy consumption of the development and the associated carbon dioxide (CO2) emissions that will arise under occupancy.

1.5 The following fuel emissions factors have been utilised within the underlying energy

calculations as defined by the updated National Calculations Method:

CO2 emission factor (kgCO2/kWh)

Natural gas 0.216

Grid supplied electricity 0.519

Grid displaced electricity 0.519

1.6 This Energy and Sustainability Statement should be used for planning purposes only and

should be re-assessed and where necessary, resubmitted at the Building Control stage if alternative building specifications or systems are adopted to those outlined within the report. Similarly the report should be reassessed if alternate internal layouts are proposed during the construction process.

1.7 The SBEM calculations underlying this statement use a large number of standard operational parameters which may not ultimately match the actual measures adopted within the finalised building. Whilst they provide a 'like for like' comparison for the purpose of this report, they are not valid for Building Control purposes or for the actual operation of the development post completion.

1.8 At this time there are no end occupants committed to the building and as such it is noted

that a certain amount of flexibility needs to be accounted for within any proposals in order to potentially accommodate any future occupant’s specific requirements.



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2.0 Planning Policy Review

2.1 National

The National Planning Policy Framework (NPPF) outlines the Government’s planning policies for England and how these are expected to be applied by local authorities. Section 10 of this document details how local policies should address climate change through the promotion of energy efficiency and the adoption of low carbon and renewable technologies. It states: "10.0 Meeting the challenge of climate change, flooding and coastal change 93. Planning plays a key role in helping shape places to secure radical reductions in

greenhouse gas emissions, minimising vulnerability and providing resilience to the impacts of climate change, and supporting the delivery of renewable and low carbon energy and associated infrastructure. This is central to the economic, social and environmental dimensions of sustainable development.

94. Local planning authorities should adopt proactive strategies to mitigate and adapt to climate change, taking full account of flood risk, coastal change and water supply and demand considerations. 95. To support the move to a low carbon future, local planning authorities should:

plan for new development in locations and ways which reduce greenhouse gas emissions;

actively support energy efficiency improvements to existing buildings; and

when setting any local requirement for a building’s sustainability, do so in a way consistent with the Government’s zero carbon buildings policy and adopt nationally described standards.

96. In determining planning applications, local planning authorities should expect new development to:

comply with adopted Local Plan policies on local requirements for decentralised energy supply unless it can be demonstrated by the applicant, having regard to the type of development involved and its design, that this is not feasible or viable; and

take account of landform, layout, building orientation, massing and landscaping to minimise energy consumption.

97. To help increase the use and supply of renewable and low carbon energy, local planning authorities should recognise the responsibility on all communities to contribute to energy generation from renewable or low carbon sources. They should:

have a positive strategy to promote energy from renewable and low carbon sources;

design their policies to maximise renewable and low carbon energy development while ensuring that adverse impacts are addressed satisfactorily, including cumulative landscape and visual impacts;



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consider identifying suitable areas for renewable and low carbon energy sources, and supporting infrastructure, where this would help secure the development of such sources;

support community-led initiatives for renewable and low carbon energy, including developments outside such areas being taken forward through neighbourhood planning; and

identify opportunities where development can draw its energy supply from decentralised, renewable or low carbon energy supply systems and for co-locating potential heat customers and suppliers."

2.2 Doncaster Metropolitan Borough Council

Policy CS14: Design and Sustainable Construction of the Doncaster Core Strategy (Adopted May 2012) outlines the council's commitment to ensuring that all of Doncaster’s towns, villages and neighbourhoods are attractive, safe and healthy places. Of particular relevance to this report, the policy states in part: “…… C) The design and layout of development must also be designed to adapt to a

changing climate, whilst helping reduce the causes of climate change, by using energy, water and materials in the most efficient way as possible. In order to help achieve this, proposals will be supported which meet or exceed the following minimum standards:

1) all new housing must meet all criteria to achieve Code for Sustainable

Homes of at least Level 3 and new non-domestic buildings must meet the BREEAM rating of at least ‘Very Good’ This should be supported by preliminary assessments at planning application stage ; and;

2) all new developments must secure at least 10% of their total regulated energy from decentralised and renewable or low carbon sources.”

In support of the above, the council have provided an advisory document entitled ‘Doncaster Metropolitan Borough Council Guidance notes to meet Core Strategy Policy 14 for small scale non-domestic developments’. This helpful publication states: “Policy CS14 requires applications to consider density, layout and sustainability issues with a focus on climate change and carbon reduction. For small scale non-domestic developments (i.e. less than 1000m2) the council does not require the building to obtain BREEAM (Building Research Establishment Environmental Assessment Method) certification as part of planning approval. However, applicants are expected to demonstrate a commitment to the principles of BREEAM methodology”. The guidance document provides the following points of advice as to how developers can meet the requirements of Policy CS14: “…Design to achieve mandatory BREEAM credits and implement measures recommended that would typically be required to achieve a Very Good rating Provide energy from decentralised and renewable or Low / Zero Carbon (LZC) sources (i.e those that do not rely on fossil fuels, or use fossil fuels in a highly efficient manner) to generate at least 10% of the development’s regulated energy consumption (where possible).”



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The aforementioned advisory document also cites the following in respect to ‘Renewable feasibility and Energy Statements’: “Policy CS14 requires at least 10% (where feasible) of the development’s regulated energy consumption (i.e. that covered by Building Regulations, namely heating, hot water and lighting) to be generate by renewable or low carbon sources. Alternatively the Council will accept improvements to the efficiency of the building fabric (through better insulation for example), where these measures will result in at least a 10% improvement over and above Building Regulations.”

2.3 Planning Policy Conclusions

Upon review of the above, it is evident that where feasible the proposed scheme will need to secure at least 10% of its total regulated energy consumption from decentralised, renewable or low carbon sources. Owing to the industrial nature of the proposed buildings and the relatively small areas of conditioned office floor space which is subject to Part L compliance (less than 350m2), it is considered that the scheme is more suited to following the BREEAM requirements associated with minor developments. This viewpoint has been supported in correspondence from the Planning Department. As a result of the above, it is proposed to design the buildings to include measures that would typically be required in order to achieve a BREEAM Very Good rating without actually undertaking a formal assessment.



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3.0 Proposed Energy Strategy and Performance 3.1 In accordance with the 'Lean' principles of the Energy Hierarchy, it is provisionally

proposed to adopt the following minimum fabric, lighting and heating standards within the office space as a means of reducing the overall energy demand of the development:

Table 1: Proposed Fabric and Lighting Standards

Element / Feature Current Part L2A 2013

Minimal Acceptable Standard

Proposed Development Target

External Cavity Walls U-value 0.35 W/m2K 0.25 W/m2K

External Metal Clad Walls 0.35 W/m2K 0.25 W/m2K

Separating Walls to Warehouse Space

0.35 W/m2K 0.33 W/m2K

Ground Floor U-value 0.25 W/m2K 0.14 W/m2K

Roof U-value 0.25 W/m2k 0.18 W/m2K

Windows & Glazed Door Specification

U-Value

Solar Transmission (G-value)

Light Transmission Factor

2.00 W/m2K - -

1.40 W/m2K 0.45

0.71

Air Permeability 10 m3/m2.h 4.00 m3/m2.h

(Target)

3.2 The above build standards are in line with the ‘Lean’ principles of the widely regarded

Energy Hierarchy which promotes the reduction of conventional energy consumption through improved insulation prior to considering the use of any Low or Zero Carbon Technologies. This substantial improvement on the minimum fabric insulation requirements of Part L2A 2013 of Building Regulations will help to reduce the associated CO2 emissions arising from the occupancy of the buildings post completion.

3.3 It is also highlighted that the risk of overheating has been minimised within the proposed

building through the avoidance of any direct South facing openings. Furthermore it is also proposed to install solar reflective glazing in order to further minimise the cooling demand of the proposed office spaces.

3.4 In addition to the improved fabric efficiencies, it also proposed to install highly efficient

LED lighting and controls to the proposed offices in order to minimise the amount of electricity consumed within the buildings. The design parameters for the office lighting are outlined within Table 2 below:



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Table 2: Proposed Lighting Design Parameters Standards

Element / Feature Design Specification

Minimum Luminous Efficacy of Internal Space Lighting

75 Lm/W (lumens per circuit watt x useful light output)

Minimum Luminous Efficacy of Display Lighting

70 Lm/W (lumens per circuit watt x useful light output)

Occupancy Sensors

Occupancy sensors (PIRs) to be fitted to all offices, toilets and welfare spaces with a maximum permitted parasitic power consumption of 0.15 W/m2. Spaces to

have manual switching ‘on’ and auto off.

Daylight Dimmers

Photoelectric sensors to be fitted to the reception area and all offices to provide auto daylight dimming.

Rooms to be divided into two or more zones with a maximum permitted parasitic power consumption of

0.15 W/m2.

Controls for Display Lighting Any display lighting to be on timers

3.5 The above proposals will ensure that the installed lighting system is highly efficient in

terms of reduced operating power consumption with high lux levels which will help to provide a favourable working environment. Furthermore the enhanced controls will limit the amount of power that is wasted by compensating for changing levels of natural daylight entering the building and by accounting for human behaviour.

3.6 Owing to the use of the proposed buildings, it is anticipated that the completed offices will

be exposed to a high volume of traffic from heavy good vehicles delivering to and from site. It is therefore proposed to mechanically ventilate the offices in order to provide future building occupants with a pleasant working environment and to limit the risk of poor air quality and noise related issue that would otherwise be experienced if the building was provided with openable windows. This ventilation strategy will work well in conjunction with the low air permeability rate which is targeted for the development as detailed in Table 1.

3.7 In order to limit the amount of energy consumed in ventilating the office spaces, it is

proposed to install mechanical ventilation with low specific fan powers and heat recovery units.

3.8 In adopting the design parameters outlined within this section, the applicant is

demonstrating a serious commitment to reducing the baseline energy consumption of the proposed development to levels which are significantly less than the standard requirements of Part L2A of the Building Regulations. These measures are proposed in addition to the inclusion of any LZC technologies.



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4.0 Review of Low Carbon & Renewable Technologies 4.1 In response to the requirements of Policy CS14: Design and Sustainable Construction and

the ‘Green’ steps of the Energy Hierarchy, a number of low carbon and renewable technologies were reviewed in terms of their overall suitability for use within the proposed development.

4.2 Wind Turbine (Column or Roof Mounted)

Benefits

When installed in optimum positions, wind turbines can generate a large amount of renewable electricity, the surplus of which can be exported at financial gain to the national grid via the Feed-in-Tariff scheme.

Site Limitations / Restrictions

Not aesthetically pleasing and would not be in keeping with the local area.

The site is too sheltered as a result of its urban location which would result in unreliable and insufficient outputs.

Require on-going maintenance which future occupants may neglect.

Can produce unacceptable levels of noise to occupants and neighbours.

Conclusion The technology is not deemed as being suitable for use within the

proposed development.

4.3 Solar Photovoltaic

Benefits

When installed in optimum positions, photovoltaic (PV) arrays can generate a large amount of renewable electricity which can be used locally or exported to the national grid via the Feed-in-Tariff scheme.

Minimal on-going costs & maintenance issues following installation.

Easy to integrate into a conventional build specification.

The proposed warehouses benefit from a large south west facing pitched roof which would provide a near ideal position to site photovoltaic panels.


Not aesthetically pleasing.

Conclusion It is not proposed to use this technology within the development.

4.4 Solar Thermal

Benefits

Solar hot water systems can provide an efficient way of contributing to a building's overall hot water requirements.

Minimal on-going costs & maintenance issues following installation.

The proposed warehouses benefit from a large south west facing pitched roof which would provide a near ideal position to site any solar collectors.


The building does not have a significant enough demand for hot water to justify investment in this technology.

Requires the installation of a thermal store(s) and a plumbed hot water system which would introduce an additional source of heat loss and unnecessary complexity to the building.




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4.5 Ground Source Heat Pump

Benefits

High operating efficiencies (CoPs).

Flexible installation options for new build properties including trench and borehole installations.

Reliable and proven technology.

Generally low maintenance costs.

No visual impact on the property.

Eligible for payments under the Renewable Heat Incentive.

Well suited to underfloor heating systems.


Detailed ground surveys required.

High capital installation costs.


4.6 Air Source Heat Pump

Benefits

High operating efficiencies (CoPs).

Reduced visual impact on the property.

Reliable and proven technology.

Generally low maintenance costs.

Reduced capital costs.

Can be utilised within wet central heating systems or in ‘air to air’ type split systems.


The external units can result in some slight background noise although this can be limited through the careful selection of models with low operating acoustic levels and the potential use of acoustic cabinets.

Conclusion It is proposed to utilise air source heat pump technology within

the development.

4.7 Biomass Boilers

Benefits Reliable and proven technology.


Require large storage facilities for the fuel.

On-going cleaning, maintenance and management requirements.

Requires regular fuel deliveries.

Would contribute to poor urban air quality.

Conclusion The technology is not deemed as being suitable for use within the

proposed development.

4.8 On review of the above technologies, the use of Air Source Heat Pump (ASHP) technology

in the form of ‘air to air’ split cassette type systems is deemed to be the most appropriate for use within the building. These will be specified to have a minimum heating SCoP of 3.75 and a minimum cooling SEER of 4.75 as means of ensuring that a reduced amount of mains electricity is used to condition the internal environment of the proposed office areas.

4.9 The use of split systems will provide an affordable and significant reduction in the

calculated CO2 emissions associated with the development under occupancy whilst also helping the buildings to ensure that at least 10% of their regulated energy demand is derived from low carbon technologies.



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5.0 Calculated Energy Performance (Illustrative) 5.1 Predicted SBEM calculations were prepared for the proposed development based upon the

‘Lean’ design specifications outlined within Section 3 of this report, coupled with the use of highly efficient split ASHP systems as outlined within paragraph 4.8.

5.2 Whilst it is noted that the final performance of the development will vary subject to the

actual ‘Air Leakage Rates’ achieved upon completion of the build and subject to the exact models of split systems and mechanical ventilation units installed, the results of the illustrative SBEM Calculations for the development are summarised below with the full corresponding BRUKL reports provided within Appendix 1 for further review,

5.3 Table 3 below outlines the performance of the proposed offices against the requirements of

Criterion 1 of Approved Document Part L2A 2013 of the Building Regulations, which relates to the calculated CO2 emission of each building as a result of regulated energy use:

Table 3: Development Regulated CO2 Emissions

Office Unit A Office Unit B

Target Emission Rate (Part L2A)

29.10 27.90

Building Emission Rate (Part L2A)

23.40 23.30

Reduction in CO2 19.59% 16.49%

Development Average Reduction in CO2

18.04%

5.4 It is evident that the proposed offices will achieve a minimum reduction of 18.04% in CO2

emissions in comparison to the minimum requirements of Part L2A. This exceeds both the standard requirement of Building Control and also the alternate 10% CO2 reduction requirement of Doncaster Metropolitan Borough Council outlined in Section 2.2.

5.5 The calculated energy consumption of the proposed offices across all regulated energy

activities is detailed within Table 4 below:

Table 4: Calculated Regulated Energy Consumption

Activity Annual Energy Consumption (kWh/m2)

Office Unit A Office Unit B Development Total

Heating 10.83 10.08 20.91

Cooling 6.57 6.62 13.19

Auxiliary 2.94 2.94 5.88

Lighting 22.01 21.92 43.93

Hot Water 2.74 2.74 5.48

Total Regulated Energy

Consumption 45.09 44.30 89.39



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5.6 The energy required to heat and cool the proposed offices will be exclusively supplied by the proposed low carbon split ASHP systems. The amount of energy required to serve these activities is compared to the regulated energy consumption of the development as a whole within Table 5 below:

Table 5: Percentage of Regulated Energy Provided by a LZC Technology

Total Heating & Cooling Demand 34.10 kWh/m2

Total Regulated Energy Demand 89.39 kWh/m2

Percentage of Regulated Energy Demand Provided from a Low or Zero Carbon Technology

38.15%

5.7 Upon review of the above, it is evident that the proposed development will produce 38.15%

of its regulated energy from a low carbon source. This comfortably exceeds the minimum requirements of Policy CS14: Design and Sustainable Construction of the Doncaster Metropolitan Borough Council Core Strategy.

5.8 On consideration of the 18.04% reduction in CO2 emissions that will be achieved, coupled

with the high proportion (38.15%) of regulated energy demand that will be provided from low carbon technologies, it is evident that the development represents a highly efficient and sustainable proposal with an overall energy performance that exceeds all mandatory required standards.



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Section 6 - BREEAM Principles

6.1 As detailed within Section 2.3, it is proposed to incorporate features within the development

that would be typically expected within a ‘Very Good’ rated BREEAM building as a means of embracing the underlying principles of the scheme without actually undertaking a formal assessment.

6.2 The BREEAM scheme assesses developments across nine different environmental

sections. Outlined below are the measures which will be adopted under each section as a means of demonstrating a general commitment to the BREEAM principles.

6.3 Management

The following sustainable management practices will be adopted in order to ensure that the construction site is managed in an environmentally and socially considerate, responsible and accountable manner:

The principal contractor will operate an environmental management system (EMS) covering their main operations.

The principal contractor will implement best practice pollution prevention policies and procedures on-site in accordance with Pollution Prevention Guidelines, Working at construction and demolition-sites: PPG6

As a means of reducing the impact of the construction to neighbouring properties, the principle contractor shall register with the Considerate Constructors Scheme with a view to achieving a ' Best Practice' standard.

In order to ensure the efficient and correct operation of the buildings post occupancy, Building User Guides (BUG) will be produced prior to handover, for distribution to the building occupiers and premises managers.

6.4 Health & Wellbeing

The proposed mechanical ventilations systems will minimise the concentration and recirculation of pollutants in order to provide a healthy internal working environment. The system will be designed to minimise the concentration and recirculation of pollutants as follows:

Provide fresh air into the building in accordance with the criteria of the relevant standard for ventilation.

Ventilation pathways will minimise the build-up of air pollutants in the building, by ensuring that the building’s air intakes and exhausts are over 10m apart and that intakes are over 20m from sources of external pollution;

Alternatively the location of the building's air intakes and exhausts will be designed in accordance with BS EN 13779:20071 Annex A2.

Where present, HVAC systems must incorporate suitable filtration to minimise external air pollution, as defined in BS EN 13779:2007 Annex A3.

Areas of the building subject to large and unpredictable or variable occupancy patterns have carbon dioxide (CO2) or air quality sensors specified which will be

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linked to the mechanical ventilation system to provide demand-controlled ventilation to the space.

In addition to the above, all decorative paints and varnishes used within the office space will be specified to have low Volatile organic compound (VOC) content and emissions levels.

Desirable levels of working light will be achieved by ensuring that all lighting is designed in accordance with CIBSE standards. Internal blinds will also be provided to reduce glare in conjunction with solar reflective glazing.

6.5 Energy

As detailed elsewhere within this report, significant measures will be undertaken in order to ensure that the building readily exceeds the minimum performance standards of Part L2A of the Building Regulations. This will be achieved through the adoption of enhanced insulation standards, improved lighting efficiencies and controls and the incorporation or low carbon split air source heat pump systems. In addition to the above, sub metering will be included on the heating and cooling system in order to aid the monitoring of the buildings future performance.

6.6 Transport

Storage facilities and amenities will be provided on site in order to encourage future occupants to cycle to work.

It is also noted that the site benefits from reasonable public transport links. Subject to the final end user, a travel plan may be produced at a later date if considered appropriate.

6.8 Water

Internal water consumption will be reduced through the specification of water saving appliances such as reduced volume / dual flush cisterns and through restricting the flow rates of the water outlets within the buildings.

Each building will also be supplied with its own water meter and a water leak detection system.

6.9 Materials

The development will aim to reduce the sustainability and environmental impact of the construction by selecting where possible A rated construction and material details from BRE Green Guide. All timber used on site will be covered by a timber accreditation scheme such as the Forest Stewardship Council as a means of ensuring the material comes from sustainable sources.

In order to minimise future maintenance and further material use, durability and protection measures will be adopted within vulnerable areas of the building including the use of kick plates to the doors of busy corridors and the installation of bumpers / railings to the front façade of the building in order to provide protection from potential vehicle collision.



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6.10 Waste

The main contractor will produce a full Site Waste Management Plan detailing how construction waste will be recycled or reused where possible, saving usable waste from landfill. Waste storage facilities will be provided for future occupants with suitable space for recyclable waste storage and collection. Floor finishes within the proposed office areas will be agreed with any future occupant before. If the future occupant is unknown upon completion, the floor finishes will not be installed.

6.11 Pollution All insulation used within the development will have an Ozone Depletion Potential of 0 and a Global Warming Potential of less than 5 as a means of reducing the environmental impact associated with the manufacturing of these products.

The installed split air source heat pump systems will be specified as requiring the use of a refrigerant with a low Global Warming Potential. It is also noted that a previous Flood Risk Assessment identified the site as being located within Flood Zone 1 and therefore at a low risk of future flooding.

6.12 Ecology

The site is a brownfield site of low ecological value which has been disrupted in recent years with the spreading of a stone surfacing. It is noted that there are several trees on the southern site boundary which will be retained in the completed development. The ecological value of the completed site will be further enhanced through the planting of mixed indigenous species within the soft landscaping perimeter areas of the site.

Appendix 1:

Illustrative SBEM (BRUKL) Calculations

Documents

Energy & Sustainability Statement Development Plot B3