New East Leppington Public School ESD SEARs Report

The engineer in his own way is an artist too - and not just a dead �sh with a slide rule. Jørgen Varming

Mechanical Engineering Lighting Design Sustainable Design Electrical Engineering

Copenhagen London Sydney Hong Kong New York

Level 8, 9 Castlereagh Street Sydney, NSW, 2000, Australia ABN 50 001 189 037 t : +61 / 02 9967 2200 e : [email protected]

SUSTAINABLE DESIGN STEENSEN VARMING

New East Leppington Public School ESD SEARs Report





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/ 13 steensenvarming.com 197020 S01 ESD CDR LP [00]

Document Revision and Status

Date Rev Issue Notes Checked Approved

08-08-2019 00 For SSDA GL CA

Disclaimers and Caveats: Copyright © 2019, by Steensen Varming Pty Ltd. All rights reserved. No part of this report may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of Steensen Varming Pty Ltd. This document is con�dential and contains privileged information regarding existing and proposed services for the Building. The information contained in the documents is not to be given to or discussed with anyone other than those persons who are privileged to view the information. Privacy protection control systems designed to ensure the highest security standards and con�dentiality are to be implemented. You should only re-transmit, distribute or commercialise the material if you are authorised to do so.

Sydney Ausgust 8th, 2019 Ref. No. 197020 REP S02 LP [00] Garry Luu Sustainability Consultant [email protected] +61 2 9987 2200





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Contents

1.0 Introduction 4

2.0 Sustainable Design - Approach 7

2.1 Sustainable Design – Key Design Principles 7

3.0 Resource Conservation 10

3.1 Energy Strategy 10

3.2 Water Strategy 11 3.3 Waste Strategy 12

3.4 Materials Strategy 12

4.0 Strategies for Site-Wide Comfort 13





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1.0 Introduction This ESD SEARs report has been prepared on behalf of the Department of Education (DoE) and Schools Infrastructure NSW (SINSW) in support of a new school known as East Leppington Public School, located in Commissioners Drive, Denham Court NSW (the project). The project is a new school and is State Signi�cant Development (SSD). The SSD Application for the project is identi�ed as SSDA . This ESD SEARs report is to be read in conjunction with the Environmental Impact Statement (EIS) that accompanies SSDA 947 . The project will provide modern public school infrastructure for the existing and future community to meet education needs. The project speci�cally will provide the following to accommodate up to 1, students at completion:

General learning areas Multipurpose hall Covered Outdoor Learning Areas (COLA) Administration area StaG area including amenities Student amenities Library Canteen Storage Assembly court Landscaping Pedestrian circulation Vehicle circulation, bulk waste pad, staG car parking, bus zone and bicycle

storage area Internal open space.

The NSW Department of Planning, Industry and Environment (now known as DPIE, and previously known as the Department of Planning and Environment) issued the Secretary’s Environmental Assessment Requirements (SEARs) for the project on 10 August 2018. The SEARs identi�es the following speci�c assessment requirements for traKc/acoustics/heritage/etc with respect to SSDA 9476: Table 1 – SEARs and Relevant Reference

SEARS (SSD 9476)

Requirements Pertinent sections of report for reference Detail how ESD principles (as de�ned in clause 7(4) of Schedule 2 of the Regulation) will be incorporated in the design and ongoing operation phases of the development.

The ESD initiatives proposed for the East Leppington New Primary School Project aims to reduce the environmental impacts typically associated with buildings during the construction and ongoing operation of the building. The project utilises a resource hierarchy approach, with emphasis on avoiding the reduction of energy, water, materials etc. The outcome of the resource hierarchy approach is to ensure the school aligns with the ecological sustainable development principles of Clause 7(4) of Schedule 2 of the Environmental Planning and Assessment Regulation 2000. Furthermore, and ESD Framework has been developed based on the Green Star Design and As-built rating tool. The ESD Framework includes initiatives to reduce energy and resources across a multitude of building sustainability issues. The categories include, management, indoor environment quality, energy, water, transport, materials, emissions, ecology and innovation.

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947 .947 .6

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SEARS (SSD 9476)

Requirements Pertinent sections of report for reference Refer to section 3.0 Resource Conservation for the proposed ESD initiatives.

Include preliminary consideration of building performance and mitigation of climate change, including consideration of Green Star Performance.

Building performance will be considered in the design of the East Leppington Primary School. Refer to Section 3.0 for the building performance measures considered to reduce resource consumption and carbon emissions, and impact on climate change. Sustainability aspirations for the project are aligned with good design practice, similar to the basis of Green Star aspirations, including designing to reduce energy and water use, reducing waste and considering locally sourced, recycled materials within the design. Optimisation of the passive architectural design (shading, building fabric, natural ventilation) is key to the project strategy.

Include a description of the measures that would be implemented to minimise consumption of resources, water (including water sensitive urban design) and energy.

Refer to section 3.0 of this report.

Provide a statement regarding how the design of the future development is responsive to the CSIRO projected impacts of climate change. Speci�cally:

hotter days and more frequent heatwave events;

extended drought periods; more extreme rainfall events; gustier wind conditions; and how these will inform material selection

and social equity aspects (respite/shelter areas).

A climate adaptation study will be undertaken to identify the climate risks in response to the projected impacts. Actions and design strategies will be identi�ed to lower the impacts and the associated risk levels. The East Leppington PS proposes the following strategies in response to the CSIRO projected impacts of climate change. Hotter days and more frequent heatwave events:

Passive building design features to reduce/dampen the eGects of increasing temperature, such as solar shading and solar control glazing.

The East Leppington PS proposes the use of mixed mode ventilation, however acknowledges the impacts of climate change and has proposed the use of air conditioning during peak conditions. This is to ensure that appropriate internal conditions can be achieved and maintained as temperatures continue to rise.

Landscaping has also been proposed to reduce urban heat island eGect. Extended drought periods:

Consideration of native low water landscaping to reduce potable water consumption; and

Rainwater harvesting and low Mow �xtures and �ttings. More extreme rainfall events:

Consideration of increased drainage capacities to reduce Mooding of roofs and hard surfaces; and

Assessment of design of the building to address post development probable maximum Mood (PMF) level.

Gustier wind conditions:

Design of windows and openings with controls to limit the impact of gustier wind conditions for internal spaces;

Landscaping to buGer strong winds to outdoor areas. Material selection:

Use of durable façade materials and materials to improve building thermal performance such as insulation and thermal mass; and





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SEARS (SSD 9476)

Requirements Pertinent sections of report for reference Covered/shaded outdoor respite areas.

Climate change projections developed for the Sydney Metropolitan area are used to inform the building design and asset life of the project. Relevant Policies and Guidelines

NSW and ACT Government Regional Climate Modelling (NARCliM)

OEH (2015) Urban Green Cover in NSW Technical Guidelines

Along with the strategies in the above response, mitigation of the urban heat island eGect in Sydney Metropolitan area will also be critical. The project will incorporate strategies to create cooler microclimates such as shading, selection of materials with a high solar reMectance index and vegetation. The NSW and ACT Government Regional Climate Modelling (NARCliM). The NARCliM models generate data for more than 100 meteorological variables. As recommended on the Guidance on NARCliM Models, the following steps will be undertaken to detemermine the relevant climate data from the range of simulations. The CSIRO projected impacts of climate change de�ne identify the risk scenarios. The projected climate change impacts from the relevant climate data from NARCliM modelling will be used to determine the impact on the building and it’s systems. The OEH (2015) Urban Green Cover in NSW Technical Guidelines provide a guideline to built environement professionals in implementing best practice initaitves to reduce Urban Heat Island eGect. Refer to section 4.0 of this report.





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2.0 Sustainable Design - Approach

In the built environment sustainability goes far beyond the concept of energy and water conservation, it encompasses the selection of materials, work methods, adaptability and most importantly occupant comfort. This can be achieved only through a rigorous, thoughtful and quality-driven design process. We continue to reduce the reliance on non-sustainable resources through our designs by developing and incorporating innovative, creative and environmentally responsive design solutions which respond to the speci�c functional demands of the spaces they serve. A sustainable education facility should be:

Healthy

Correctly commissioned

Comfortable

Be a teaching tool

EKcient

Safe and secure for staG, students and visitors

Easy to maintain

and operate

A community resource

Environmentally responsive

Be of stimulating architecture

2.1 Sustainable Design – Key Design Principles

The function of the building demands that the design delivers on a high-quality learning environment that stimulates and enhances the learning experience and enjoyment for all those who reside within. Our approach seeks to address the quality of the learning environment as the priority, through optimising access to natural daylight, Internal Air Quality (IAQ) and occupant comfort. These sustainable objectives are then supported by eKcient systems and controls in the conservation of natural resources. Steensen Varming were recently engaged by Schools Infrastructure NSW to undertake a review of the Department of Education Air Cooling Policy with a view to making recommendations for improving the policy to ensure its �tness for purpose. The review focussed on the drivers for the Air-Cooling Policy, in terms of assessing the impacts that the internal environment has on students and their learning





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performance, so the resulting recommendations for thermal comfort and air quality could be justi�ed in terms of tangible bene�ts for students. The recommendations have been used as the basis of a new performance brief, that sets the design parameters for all new school projects across NSW.

Key principles include:

The promotion of natural daylight – There is a direct correlation between access to daylight and student performance, attention, productivity and general wellbeing. A narrow Moorplan design, high proportion of façade / glazing to associated Moor area, promotes a high ingress of natural daylight in a controlled and considerate manner. Direct daylight should be obscured, considerate of skylights, and in utilising the casting shadows from adjacent tree coverage, minimise the requirement for internal blinds which can obscure views out.

Indoor Air Quality (IAQ) – In a similar manner to daylight, there is proven

correlation between student performance, occupant wellbeing, student attendance and staG retention. Principle strategies include: - Outside air allowances at or in excess of minimum standards should be

achieved at all times, either through natural ventilation when favourable conditions exist or through ducted outdoor systems (see resource conservation for further information). Care must be taken in winter to ensure spaces subject to natural ventilation only do not close the façade and restrict desirable outdoor air provision.

- Bio-�ltration of outside air to assist in the removal of airborne pollutants. This can occur naturally due to the project setting, but additional specialist greenery can be provided if warranted;

- Mould prevention through the avoidance of thermal bridges, condensation and eGective strategies in ventilation, odour and pollution control;

- Low pollutant emitting materials selections such as low VOC paints, adhesives, sealants, composite woods, etc.





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Thermal, Visual and Acoustic comfort: - Thermal comfort: To ensure teachers, students and administrators are not

subject to unacceptable extremes in temperature as they teach, learn and work.

- Visual comfort: To ensure the quality of light is supportive of visual tasks such as reading and presenting. The large extent of glazing ensures access to high quality diGuse daylight, uniform daylight, and views to the external environment. The green surrounds of the building should be visible from the majority / if not all the spaces. This ensures students and staG have a connection to nature and the associated daily and seasonal patterns;

- Acoustic comfort: To ensure eGective communication can be achieved at all times. Noise from ventilation systems is eliminated, external and internal disruptive noise aGecting classrooms minimised. The design should aspire to reduce sound reverberation levels to 1.5 seconds or less; and HVAC noise to 45dBA or less (40dBA ideal);

Resource conservation (energy, water and waste) - In delivering and

optimising the functional demands of an educational building (high levels of daylight, thermal comfort, visual comfort, and IAQ), resource use is incurred. These are to be supported with minimal consumption of energy and water resources, or the generation of waste and pollution in demolition, construction and operation of the building. Our approach to resource conservation is based a “hierarchy” methodology as outlined in the following sections





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3.0 Resource Conservation

3.1 Energy Strategy

- Passive design principles �rst, including:

o Minimise direct solar access in summer and midseason’s (windows and skylights);

o Incorporate thermal mass (primarily Moors & roof); o Facilitate passive winter warming (winter sun); o Seasonal temperature and humidity set-points; o The promotion of stairs; o Reduced uncontrolled in�ltration (oGsite prefabrication and assist with

better detailing and quality of install) o Multi-functional application of shading devices with e.g. circulation

routes, power generation etc. o Solar shading strategy: design to avoid September 21 – March 21 high

angle sun; design to admit winter sun for passive heating.

- Natural ventilation strategy: o Permit summer prevailing winds from the South to North; o Façade openings to be evenly and eGectively distributed (height &

horizontal distribution). o Consideration shall be provided to automated vs manual openings,

security and weather protection; o Arti�cially generated air movement through eGective the positioning

and performance of ceiling fans; o High ceilings which promote eGective cross ventilation and removal of

heat from the occupied zone. Consider highly perforated ceilings to maximise available height;





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Homebase natural ventilation strategy:

- EKcient services strategies include: o Outside air quantities controlled via IAQ monitoring (Demand

Controlled Ventilation); o Heat recovery (where applicable); o High eKciency plant; o Opportunities for the passive pre-tempering of outdoor air; o EKcient lighting and associated controls; o EKcient services distribution; o The selection of locally supplied / supported, and general ease to

maintain of systems, that can operate within the limitations of the local facilities management team;

o Provide extensive metering, monitoring and fault diagnostics devices; o High eKciency equipment and small power loads.

- Onsite energy generation: Consideration shall be given to incorporating

photovoltaics, battery storage and solar thermal technology; - High eKciency innovate technology shall be proposed in a manner to support

passive design, continuous high-quality levels of natural daylight, and thermal comfort all year round.

- Comprehensive system commissioning. - A WoL (Whole of Life) approach to system design and selection;

3.2 Water Strategy

Water: In accordance with the water hierarchy, low Mow �xtures and low water use landscaping will be speci�ed as a minimum, supported with rainwater collection, storage and reuse for non-potable services and irrigation.





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3.3 Waste Strategy

Waste:

o Designated and visible areas will be nominated for the collection, sorting and recycling.

o Construction waste can be signi�cantly reduced through oGsite prefabrication techniques.

3.4 Materials Strategy

Materials: Material selection is an important aspect of environmental design because building materials consume energy and natural resources during their manufacture and transportation to the construction site. The construction of new buildings consumes large quantities of water, wood, metals and energy (fossil fuels). Preference is given to materials that are non-toxic, contain high-recycled content and/or highly recyclable. These include:

o Low IEQ Impact (Formaldehyde/VOC’s, etc.); o Recycled, Recyclable and Re-used content; o Low Embodied Energy; o Rapidly renewable materials; o Biodegradable/Compostable; o Prefabricated; o Eco labels/Third Party Certi�cation.





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4.0 Strategies for Site-Wide Comfort

Protect from Westerly winter winds:

Consider appropriate planting, e.g. thick coverage at pedestrian level along Western edge of site to protect from cold winter winds.

Allow path for North/South summer winds: To allow air movement for natural ventilation and to increase thermal comfort

Mitigate Heat Island E@ect Consider high solar reMectance index materials, e.g. roof materials, playing court and carpark surface; provide vegetation; provide shade with vegetation and external shading elements within the architectural design

New East Leppington Public School ESD SEARs Report

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