Head Office 25 Sackville St London, W1s 3HQ T: +44 (0)20 7544 2000 F: +44 (0)20 7544 2222 nbenvironment.co.uk

Platinum Building St Johns Innovation Park

Milton Road Cambridge

Cambridgeshire CB4 0WS

Energy Survey Report and Energy Performance Certificate (EPC)

Undertaken by ARCADIS AYH plc

November 2008

Contents

1.0 Executive Summary

2.0 Introduction and Objectives

3.0 Overview of the Building and Systems Investigated

− Building Location and Description

− Thermal Elements

− Heating, Ventilation and Air Conditioning Systems

4.0 Access and Availability of Documentation

5.0 Suggested Way Forward

6.0 Appendices

− Appendix A – Energy Performance Certificate

− Appendix B – Recommendation Report

− Appendix C – Building Energy Performance and CO2 Emissions

− Appendix D – Layout Drawings Showing Zoned Spaces

− Appendix E – Conditions Relating to Energy Surveys

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1.0 Executive Summary

Platinum Building is an office building located in Cambridge. The building's thermal

standards appear to reflect building regulations level of compliance at the time of its

construction. The building consists mostly of open plan office spaces on all three

floors. In addition to the open plan spaces, the building also has cellular amenities

spaces on all levels. The building has two plant rooms. One is located at the rear of the

ground floor. Other building facilities such as air handling units, pumps and

condensing units are contained within an elongated unconditioned plant room located

on the roof.

Platinum Building has an Energy Performance Asset Rating of C/66 (see Appendix

A). This compares with the following benchmarks:

− B/40 if newly built.

− D/82 if typical of existing building stock. Should the Recommendations within this report be implemented the rating shall

improve and the grade may rise.

2.0 Introduction and Objectives

ARCADIS AYH plc was invited to visit Platinum Building on Friday 14th November

2008 to complete a non-intrusive energy review.

The principal objectives were:

− To calculate the fabric and asset carbon dioxide ( CO2) emissions.

− To identify areas of potential energy cost and emission savings.

− To recommend methods of maintaining and improving on existing energy savings.

− To produce an ‘Energy Performance Certificate’ (EPC).

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3.0 Overview of the Building and Systems Investigated

Building Location and Description

The building is located at:

Platinum House

St Johns Innovation Park

Milton Road

Cambridge

Cambridgeshire

CB4 0WS

The building is approximately 6173m2 and accommodates office spaces over three

floors.

Thermal Elements

All thermal elements appear to be in keeping with the building regulations at the time

of construction. Selected sections of the side external façade of the building is

constructed of brick work portal. The building’s front and rear faces are made of large

square tiles to improve the aesthetics of the building. The building has a flat concrete

roof over metal joists and appears to be insulated to building regulation

recommendations at the time of construction. The external floor is concrete screed and

slab construction and it is assumed to meet building regulation standards at the time

of construction.

Heating, Ventilation and Air Conditioning Systems

− 2 no. Gas fired boilers provide heat to the building via both wet system radiators and a fan coil unit system.

− 2 no. Air handling units supply air to the fan coil system which in turn supplies the whole building.

− 3 no. Electric heaters provide heat to several office cellular envelopes, as needed.

− Extract systems are installed within the toilet spaces.

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4.0 Access and Availability of Documentation Full access to the building including permission to take photographs was given.

− Log books were not made available

− Operating and Maintenance (O&M) manuals were not available

− Drawings were made available by sub-contracting. These were provided in electronic formats.

5.0 Suggested Way Forward

The Unit appears to be in good condition and the HVAC controls appear to be well

implemented. The building has a building energy management (BEM) system

installed. It is assumed that this system is not optimally implemented. The building

represents a good level of energy efficiency compared to that of the typical stock.

− T5 conversion kits should be considered to replace other installed lighting units. If carried out, this will reduce the energy expended in lighting the building.

− Where possible the control strategy should be adjusted to further improve the level of thermal control to the spaces.

It is also important that the below points are considered and implemented when

possible:

− Optimal application of the BEM system

− An annual energy assessment budget is set aside

− A future improvement works and an implementation programme is drawn up.

− A performance specification is produced for any agreed works and that they are competitively tendered and procured.

− The energy usage is continually managed and monitored and the savings in energy and carbon emissions are announced.

After changes to the building and its equipment are made the building would benefit

from a re-assessment and a revised EPC could be produced to reflect the higher

standard achieved. This may in turn increase the asset value and its marketability.

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6.0 Appendices

Appendix A – Energy Performance Certificate

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Appendix B – Recommendation Report

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Appendix C – Building Energy Performance and CO2 Emissions

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Appendix D – Layout Drawings Showing Zoned Spaces

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Appendix E – Conditions Relating to Energy Surveys

Undertaken By ARCADIS AYH Plc

a. The Report will describe the Energy Services installations, report on their quality and general condition and draw attention to significant apparent and suspected defects.

b. The examination will be limited to visual inspection of the installations and will

include review of the interior of plant and equipment, where possible without the use of specialist equipment or disruption of operation of systems in use.

c. The report will assess the suitability of the Fabric and Engineering Services

installation in relation to the current and potential uses of the building and draw comparisons with current market standards.

d. The report will draw attention to suspected operating defects but no dynamic or

static testing of the installation will take place either to verify performance, compliance with statutory recommendations or regulations unless specifically instructed by the Client.

e. Where multiple items of equipment occur, e.g. light fittings, air conditioning

terminal units etc. a detailed examination will be made (subject to B above) of a random sample number of such items and conclusions drawn from the results obtained.

f. Comment will be made in the Survey Report on the presence and suitability of

incoming main services. No contact with Statutory Supply Authorities will be made unless specifically instructed by the Client.

g. The Survey Report will include reference to matters which could affect the

energy consumption the building fabric and equipment.

h. Where record information is available at the time of survey relating to the design, installation or operation of the engineering services, the report will comment on such and the apparent ability of the engineering services installation to meet the standards stated.

i. No calculations or financial checks will be carried out to verify such information

or its validity from which, in part, ARCADIS AYH may draw certain of its conclusions.

j. Recommendations will be made where further investigations or testing is

deemed advisable in plant, equipment and parts of the installation which it is not possible to inspect or which raise concern.

k. In the event of only part occupancy of a property the survey will be conducted

in respect of the area of demise or occupation with only a general appraisal of the remainder of the building insofar as it could affect occupancy.

l. The survey report is for the use only of the party to whom it is addressed and no

responsibility is accepted by ARCADIS AYH plc. to any third party for the whole or part of its contents