construction stage

Pre-Design

Pre-Design

Design

Design

Operation

Operation

Construction

Construction

CEPAS

Comprehensive Environmental Performance Assessment Scheme for Buildings

Construction Stage

2006 Edition

Comprehensive Environmental Performance Assessment Scheme for Buildings

Construction Stage Assessment Manual

Buildings Department HKSAR Government

2006 Edition

COPYRIGHT

All rights are reserved. Applications to copy all or any part of this publication should be made to the Buildings Department, Hong Kong Special Administrative Region (HKSAR) Government.

CONTENT PREFACE Page

CEPAS BUILDING DATA SHEET (CONSTRUCTION/DEMOLITION WORKS) 1

INDOOR ENVIRONMENTAL QUALITY (IE) 2 IE 1 Health & Hygiene 2 IE 2 Indoor Air Quality 4 IE 3 Lighting Environment 6

BUILDING AMENITIES (BA) 8 BA 1 Safety 8 BA 2 Management 9

RESOURCES USE (RE) 13 RE 1 Energy Efficiency 13 RE 2 Water Conservation 15 RE 3 Timber Use 17 RE 4 Material Use 21

LOADINGS (LD) 29 LD 1 Pollution 29 LD 2 Waste Management 37

SITE AMENITIES (SA) 41 SA 1 Landscape 41 SA 2 Security 43

NEIGHBOURHOOD AMENITIES (NA) 45 NA 1 Sustainability Economics 45

SITE IMPACTS (SI) 47 SI 1 Nature Conservation 47 SI 2 Heritage Conservation 49 SI 3 Buildability 51

NEIGHBOURHOOD IMPACTS (NI) 53 NI 1 Environmental Impact Assessment 53 NI 2 Environmental Interactions 54 NI 3 Impacts to Communities 56

APPENDIX 1. LIST OF ABBREVIATIONS 58

APPENDIX 2. SUMMARY OF CEPAS INDICATORS 60

APPENDIX 3A. CEPAS SCORING & WEIGHTING TABLES FOR CONSTRUCTION STAGE (CONSTRUCTION WORKS) 66

APPENDIX 3B. CEPAS SCORING & WEIGHTING TABLES FOR CONSTRUCTION STAGE (DEMOLITION WORKS) 70

PREFACE

Thank you for reading this CEPAS Construction Stage Assessment Manual.

This assessment manual for Construction Stage forms one part of the holistic life-cycle considered comprehensive environmental performance assessment scheme (CEPAS) for buildings in Hong Kong. It is for use during the building construction period. The target users for these publications are building developers, owners, designers and building environmental specialists, i.e. all parties of the building industry. The general public is also encouraged to use this scheme to understand more about building environmental issues. It is expected that the building performance will be improved when all the users are involved.

The entire CEPAS assessment scheme consists of the following publications:

• CEPAS Application Guidelines

• CEPAS Pre-design Stage Assessment Manual

• CEPAS Design Stage Assessment Manual

• CEPAS Construction Stage Assessment Manual

• CEPAS Operation Stage Assessment Manual

The CEPAS manuals are prepared to provide a measure to evaluate sustainability performance for all building types in Hong Kong. It is expected that this assessment scheme (2006 edition) will continue to develop by sharing research supports and implementation experience with other local and international assessment scheme. In order to maximise the flexibility of building planning, design, construction and operation, there is flexibility in a number of the indicators within this assessment scheme. It is recommended that this assessment scheme be used with reference to related technical guidelines from local and international academia, professional organisations and the Government.

These CEPAS manuals were written by Ove Arup & Partners Hong Kong Limited and the associated sub-consultants. The scheme has incorporated advices from local experts and the Steering Group members, issues raised in the Discussion Forum and Expert Panels, as well as findings of Questionnaire Survey to the stakeholders. The CEPAS assessment schemes, application guidelines and other codes, handbooks and information published by the Buildings Department can be downloaded at http://www.bd.gov.hk/.

December 2006

BUILDINGS DEPARTMENT COMPREHENSIVE ENVIRONMENTAL PERFORMANCE ASSESSMENT SCHEME (CEPAS) FOR BUILDINGS

Construction Stage Assessment Manual Page 1 2006 Edition

CEPAS Building Data Sheet (Construction/Demolition Works)

BD Ref. No.

Building Name

Building Address

RESIDENTIAL NON – RESIDENTIAL Building Type

Usages Usages

Total site area (m²) Total site area (m²)

Total floor area (m²) (AC-R)

Total floor area (m²) (AC-NR)

Occupancy (Person) Occupancy (Person)

Building Height (m) Building Height (m)

No. of floor (include basement)

No. of floor (include basement)

Open space area (m²) Open space area (m²)

Non – residential building (Office & public place floor area, i.e. area assigned for use by the tenant / landlord / public, such as office, common area, shop, within the total enclosed space) (m²)

Building Dimensions

Non – residential building (Other than office & public place floor area) (m²)

Building Type RESIDENTIAL NON – RESIDENTIAL

STAGE This submission (Tick one)

Building stage assessed (Tick relevant)

This submission (Tick one)

Building stage assessed (Tick relevant)

Pre-design

Design

Construction (Construction works)

Construction (Demolition works)

Operation

Operation Stage (Re-assessment)



INDOOR ENVIRONMENTAL QUALITY (IE) IE 1 Health & Hygiene

IE 1.1 Health & Hygiene

Intent To enhance of health and hygiene in construction / demolition site

Strategy Indicators

Sub-criteria Performance Scale Non-residential / Residential buildings

0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

IE 1.1 Score

Non-residential / Residential Item Stage Strategy

No Yes N/A

1 C D Space provision for cleansing facilities and storage of cleansing equipment

0 1

2 C D Regular cleansing and good housekeeping in toilets and site office 0 1

3 C D Hygiene management plan for construction / demolition site 0 1

4 C D Designated person to inspect the site regularly to identify health and hygienic problem areas

0 1

5 C D Provide training and information on health and hygiene issues to construction site staff

0 1

6 C D Use of no / low emission cleaning products 0 1

(A) Total maximum score (applicable items only) in this Sub-criteria

(B) Total score (applicable items only) obtained in this Sub-criteria

NON-RESIDENTIAL + RESIDENTIAL

Sub-criteria performance score (PC) (B)/(A) = PC

Explanation Item 1: This indicator is assigned to encourage contractors to provide designated space within the construction / demolition site, including the site office, toilets and the constructed portions within the site. The designated space / room(s) shall be in the form of a room / protected space with sufficient storage area and washing basin, to



allow washing of cleansing equipment and storage of cleansing commodities.

Item 2: Many construction / demolition sites are notorious for dirty toilets. This indicator aims to encourage the contractors to provide a better and more hygienic environment for site workers. The cleansing frequency of a site office will depend on the actual situation but daily cleansing of toilet is required. A cleansing logbook shall be provided to record the cleansing works.

Item 3: The indicator aims to encourage the contractors to formulate a hygiene management plan for the construction / demolition site. The management strategies can be in form of educational basis, instructions or guidelines for site staff and both long-term and short-term workers. In addition, the management plan shall include the identification of hygienic problems and their possible locations, methods to maintain the hygiene performance and an emergency action plan.

Item 4: This indicator is assigned to encourage the contractors to designate a member of site staff to inspect the construction / demolition site regularly, and to identify health and hygiene problem areas. A minimum inspection frequency of once a week is expected, for instance, stagnant water offers a breeding ground for mosquitoes, which may bite site workers and cause transmission of diseases. This indicator aims to eliminate health risks, such as mosquito growth within the construction / demolition site. A designated person is required to inform the project site staff for the requirement of health risk remedial works, such as stagnant water removal.

Item 5: This indicator is assigned to maintain and improve health and hygiene knowledge and technique to site staff through education and training that provided by the contractors. Good health and hygienic environment is best achieved by staff good habits and practice.

Item 6: Large quantity of cleaning products is consumed during construction and demolition works. Some of the cleaning products are toxic and non-biodegradable, which will cause adverse impact to the environment. This indicator is assigned to encourage the use of environmentally-friendly cleaning materials and products.

Submittal The following information shall be provided to demonstrate the compliance of the Strategy Indicators:

• Hygiene management plan. • Management plan implementation records. • Layout drawing and relevant evidence, such as photos. • Training records / materials on environmental health. • Documentation on using environmentally friendly cleaning products.



IE 2 Indoor Air Quality

IE 2.1 Indoor Air Quality Strategies

Intent To provide and implement IAQ strategies for the construction / demolition site

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

IE 2.1 Score


No Yes N/A

1 C D Design with sufficient quantity of fresh air supply for the site office and show room on site

0 1

2 C - Design of commercial kitchen ventilation system within construction site with effective oily fume and odour removal in canteens and food business

0 1

3 C - Implement IAQ management strategies for occupied buildings under construction

0 1

4 C - Use of no/low emitting building and furnishing materials 0 1





Explanation Item 1: This indicator is assigned to encourage the provision of good quality fresh air to the construction / demolition site office and show room / sale office. The minimum fresh air rate for the office area as described in the ASHRAE Standard 62.1-2004: Ventilation for Acceptable Indoor Air Quality, shall be referred as the minimum compliance requirement for this indicator.

Item 2: This indicator is assigned to encourage appropriate design of the commercial kitchen ventilation system within the construction site. The ventilation system should be equipped with effective oily fume and odour removal for canteens and food



business. The EPD “A Guide to Control of Oily Fume and Cooking Odour from Restaurants and Food Business” shall be referred.

Item 3: This indicator is assigned to encourage IAQ control due to construction works in occupied buildings. The IAQ Guidelines for Occupied Buildings Under Construction (1995), published by the Sheet Metal and Air Conditioning, Contractors’ National Association (SMACNA) or other relevant publication shall be referred. In addition, if spatially feasible, a temporary exhaust air duct is recommended to extract air directly from the construction area to the ambient. Air in the construction area should be prevented from getting into the occupied space, this can be achieved by maintaining negative air pressure in the A&A areas.

In addition, all air filters used in the construction site and its surrounding areas shall be replaced prior to occupancy of the A&A portions.

Item 4: This indicator is assigned to control indoor air pollution at source, which is one of the effective indoor air pollution control strategies. Building and furnishing materials without or with low pollutant emission, particularly on VOC, is acceptable for this indicator.

Innovation Item:

Innovative method to further improve IAQ in construction / demolition site

This is a bonus score for innovative IAQ management in the construction / demolition site

Submittal The following information shall be provided to demonstrate compliance with the Strategy Indicators:

• Relevant strategy report. • Strategy implementation records. • Relevant photographic evidence. • Other relevant supporting documentation for improved and innovative ideas. • Material Safety Data Sheet (MSDS) or manufacturer’s data sheet highlighting the

slated VOC emissions on building / furnishing materials



IE 3 Lighting Environment

IE 3.1 Visual Quality & Comfort

Intent To design and maintain good visual comfort in site office and enhance energy efficiency for electric lighting installations

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

IE 3.1 Score


No Yes N/A

1 C D Design of lighting with optimum illuminance and glare control in site office.

0 1

2 C D Design with daylight and electric lighting integration in site office and allow more daylight access to the interior

0 1

3 C D Use of T5 fluorescent lamps in site office 0 1





Explanation Item 1: Optimum illuminance level can reduce energy consumption as it avoids the over-provision of lighting and produces a good indoor visual environment. Glare control for electric lighting can be achieved by means of selecting proper designed luminaries to limit the glare within site office. Lighting installations in various areas and space shall achieve and maintain the optimum standard of illuminance and limit the glare index, as recommended by the CIBSE Code for Interior Lighting (1997).

Item 2: This indicator is assigned to encourage use of daylight instead of electric lighting, and use of automatic lighting control system for integrated daylight and electric lighting operation. Appropriate control and sensor facilities shall be provided to allow coordinated operation of the natural and artificial light sources, in response to the interior requirements and outdoor daylight conditions. The integrated control shall be able to minimize the operating period of electric lighting and to allow more use of



daylight. Also, a more pleasant indoor environment can be created through daylight access. However, daylight may bring along radiation to the interior and so the use of optimum external solar shading devices and the collection of reflected daylight are encouraged.

Item 3: Technical details for energy efficient lighting installations, as referred in the EMSD Guidelines on Energy Efficiency Equipment: T5 Fluorescent Lamps. The T5 fluorescent lamp is recommended for all construction site office areas, where feasible.

Innovation Item:

Innovative method to further improve the indoor visual comfort and lighting energy efficiency within construction site

This is a bonus score for innovative method to improve the visual quality and comfort in construction / demolition site.

Submittal The following information shall be provided to demonstrate compliance with the

Strategy Indicators:

• Relevant strategy report, calculation, equipment specification. • Relevant photographic evidence. • Other relevant supporting documentation for improved and innovative ideas. • The maintained illuminance shall be calculated using lumen method as described

in the CIBSE code.



BUILDING AMENITIES (BA)

BA 1 Safety

Pre-requisite Criteria

Intent To provide a safe working environment in and around a construction / demolition site

Stage C D

Requirements Compliance

This indicator is assigned to reassert the importance of Safety in the overall building environmental performance through the current statutory requirements.

Maintaining a safe environment for workers in and around a construction / demolition site is essential for a sustainable community. The government is endeavours in protecting and promoting health and safety for the community. Compliance with safety related statutory requirements are considered as minimum requirements in this assessment scheme. Meanwhile, additional safety measures provided by the building Developer / Owner / Contractor are recommended.

The followings are some common safety related statutory requirements in Hong Kong.

Code of Practice for Safety and Health at Work in Confined Spaces

Code of Practice for Site Safety Supervision

Code of Practice on the Design and Construction of Builders’ Lifts

This indicator is applicable for both Construction and Demolition Stages.

Statutory requirements, no assessment in CEPAS is required.



BA 2 Management

BA 2.1 Building Management

Intent To provide effective and environmental conscious construction management

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

BA 2.1 Score


No Yes N/A

1 C D Major contractors for the construction / demolition projects are accredited with ISO 9000 quality management system

0 1

2 C D Major contractors for the construction / demolition projects are accredited with ISO 14000 environmental management system

0 1

3 C D Major contractors for the construction / demolition projects are accredited with OHSAS 18001 occupational health and safety management system

0 1

4 C D Environmental training provided for the major contractors’ management and supervisory staff at the early stage of construction / demolition process

0 1

5 C D Environmental training provided for the construction workers at the early stage of construction / demolition process

0 1

6 C - Comprehensive building records provided and conveyed to building operator and designer with satisfaction

0 1

7 C - Comprehensive and effective testing and commissioning works provided and satisfy the designer’s requirements

0 1

8 C - Appropriate trainings of various building facilities and services installations provided by the contractors and suppliers to the building operators

0 1







Explanation Item 1: A quality management system is fundamental for effective construction activities and essential in providing their clients with the quality of services they require. The services provided by contractors shall be carried out in a suitably coordinated, efficient and cost effective manner, with the guidance and restriction of an appropriate quality management system adopted. The widely recognised ISO 9000 standard shall be referred. Major contractors include the main builder and main building services contractors.

Item 2: An Environmental Management System is an overall management system, which includes organizational structure, planning activities, responsibilities, practices, procedures, processes and resources for developing, implementing, achieving, reviewing and maintaining the environmental policy. It provides a framework for systematic presentation of environmental information for decision making as well as improving the environmental performance of the contractors, and enhancing their creditability with financial institutions, insurance companies, regulators and building Developers / Owners. The widely recognised ISO 14000 standard shall be referred. Major contractors include the main builder and main building services contractors.

Item 3: An Occupational Health and Safety Management System is a part of the overall management system which includes organization structure, planning activities, responsibilities, practices, procedures, processes and resources for developing, implementing, achieving, reviewing and maintaining the occupational health and safety policy, and so managing the occupational health and safety risks associated with the business of the organization.

The technical specification of OHSAS 18001 takes a structured approach to occupational health and safety management. The elements of successfully OH&S management are depicted as a process model consisting OH&S Policy, Planning, Implementation and Operation, Checking and Corrective Action, Management Review and ultimately Continual improvement. All of these processes are considerably important to building construction and contractors should develop plan to implement.

Items 4 & 5: The indicators are assigned to encourage effective environmental training to raise environmental awareness and knowledge of the construction project team and workers. All staff involved in the construction project shall be included in this training, from site management level to worker level. The guidelines as described in the Annex 3.4: Environmental Training of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred. In addition, other environmental precautions such as training of workers to avoid material breakage or left-over during material delivery, handling and storage shall be included. An in-house environmental trainer or external trainer can carry out the training. The training materials shall cover general and site-specific precaution, mitigation, remedial measures for the construction project and good working practices. Coordination between the trainer and design team is encouraged, to enable the environmental design concept to be fully conveyed to the contractors’ staff.

Item 6: A complete set of building records is essential for effective operation, maintenance and management, and should therefore be handed over to the building operator at project completion. The contractor is required to compile and provide the following information and convey to building operator. The score in this indicator is awarded to Contractor if the client’s representatives are satisfied with the building records.



Building, structural, drainage, site formation, alterations and additions plans approved by the Building Authority (BA); documents associated with the approval such as calculations, undertakings, certificates, permits, etc.; and records on any change of use of certain parts of the building accepted by the BA

Building services as-built drawings, including fire services, underground drains, drainage, water supply, electrical, lighting, broadcasting, gas supply, MVAC systems, etc. The plumbing and fire services drawings shall be the approved drawings by the Water Supplies Department and Fire Services Department respectively.

Layout plan for hidden utilities such as electricity cables, gas pipes, telephone lines, etc.

Testing, commissioning and operation manuals for building services, mechanical components and installations.

Maintenance certificate, installation contract, etc. of the building services

Testing records and certificates required under Fire Service (Installations and Equipment) Regulations

Testing records and certificates required under Building (Ventilating Systems) Regulations

Testing and inspection records and certificates required under Lifts & Escalators (Safety) Ordinance

Testing records and certificates required under Electricity (Wiring) Regulations

Certification for the performance of specific materials and components, as well as warranties from specialist contractors or suppliers (e.g. on waterproofing materials and its installation work)

Completed CEPAS Pre-Design, Design and Construction Stages assessment forms, results and submission details (if available).

The operation and maintenance (O&M) manual shall be prepared with user-friendlly and well-structured format ASHRAE Guideline 4 (1993), BSRIA Application Guide 1/87 (1990), or equivalent standards can be adopted as reference for manual preparation.

Item 7: Building commissioning is a critical part of the building handover procedure and is important for the building’s long-term operation, as it determines the expense of building operation and rectification works. It involves testing and balancing of the installed systems to ensure correct and effective compliance with regulations, specifications and design intent. To ensure the Contractor’s performance works in testing and commissioning works, the performance testing and commissioning (T&C) works shall cover various building systems. Reference to relevant T&C standards are also required, such as the Testing and Commissioning Procedure for various building systems issued by the Building Services Branch of Architectural Services Department of HKSAR, as well as other recognized international guidelines such as those issued by the CIBSE, BSRIA and ASHRAE. For large building projects or building with complicated building systems, employment of a specialist commissioning agent is recommended.

This indicator is assigned to recognize the contractors’ commitment in carrying out comprehensive and effective T&C works prior to handover to the building operator by means of the above-mentioned standards and guidelines. The score in this indicator is awarded to Contractor if the T&C works are entirely satisfied by the client’s representatives.

Item 8: Appropriate and effective training shall be arranged by contractors and



suppliers to train the operating and maintenance staff, and familiarize them with the building design philosophy, as well as the strategies and methods for the operation of various building facilities and building services systems. The scope of the training depends on the scale of the building, as well as the complexity of building services installations and building facilities.

This indicator is assigned to recognise the contractors’ commitment in carrying out comprehensive and effective technical training to the building operator. The score in this indicator is awarded to Contractor if the training scope and information are entirely satisfied by the client’s representatives.

Innovation Item:

Innovative method to further improve the construction / demolition management effectiveness

This is a bonus score for using innovative method to improve the construction / demolition project management process, such as the construction program, environmental management, construction method, construction sequence, etc.

Submittal The following information shall be provided to demonstrate the compliance with the

Strategy Indicators:

• Relevant strategy report. • Strategy implementation records. • Relevant approval letters from the client’s representatives and relevant

certificates. • Other relevant supporting documentation for improved and innovative ideas.



RESOURCES USE (RE) RE 1 Energy Efficiency RE 1.1 Energy Efficiency

Intent To enhance the energy efficiency performance of construction / demolition site

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

RE 1.1 Score


No Yes N/A

1 C D Formulation and implementation of an overall energy management strategy for the construction / demolition site

0 1

2 C D Formulation and implementation of an overall energy management strategy for the site office

0 1

3 C D Formulation and implementation of a lighting operation strategy to minimise unnecessary lighting operation in the construction / demolition site at night

0 1

4 C D Minimum 50% of all electrical appliances and equipment used in site offices complied with Grade 2 or better as defined in the EMSD Energy Efficiency Labelling Scheme for Household Appliances and Office Equipment / Multi-function Device for site office & sales areas

0 1

5 C D Minimum 50% of all electrical appliances and equipment used in sale office and show room on construction site complied with Grade 2 or better as defined in the EMSD Energy Efficiency Labelling Scheme for Household Appliances and Office Equipment / Multi-function Device for site office & sales areas

0 1

6 C D Use of renewable energy in the construction / demolition site 0 1







Explanation Item 1: The indicator is assigned to encourage the major contractor to establish energy management strategies for the construction / demolition site. The strategy shall include energy saving measures, categorised energy consumption records and an education program for site staff. A competent person shall be assigned to supervise the development and implementation of the strategy and to monitor its’ effectiveness. Also, the use of advanced and efficient construction machineries are encouraged in the strategy. Direct burning of coal, wood, or even rubbish on site shall be prohibited.

Item 2: The indicator is assigned to encourage the Client and contractors to establish energy management strategy for the temporary office in construction / demolition site. A competent person shall be assigned to organise an energy saving education program and to supervise and its follow up activities. Also, sufficient thermal insulation for the temporary building fabric and minimisation of infiltration is required. In addition, a sufficient operable window shall be provided to allow natural ventilation during moderate seasons.

Item 3: This indicator is assigned to minimise energy wastage through unnecessary electric lighting operation at night. For instance, use of fluorescent lamps instead of incandescent lamp is recommended for site security use.

Items 4 & 5: This indicator is assigned to encourage the use of energy efficient electric appliances in the site office and sale office, such as air-conditioners.

Item 6: Possible use of renewable energy on site includes wind, solar electricity, solar thermal, etc.

Innovation method:

Modification of the design and to facilitate construction / demolition methods or sequence that can reduce energy consumption during construction process

This is a bonus score for innovation in construction method. This indicator is assigned to encourage the contractor to use advanced and innovative method to further reduce energy consumption during construction. For instance, the contractor may propose an alternative construction method with improved energy consumption, other than the specified method in the design stage, to carry out construction work without a major cost implication.

Submittal The following information shall be provided to demonstrate compliance with the Strategy Indicators:

• Energy management strategy report with time program. • Strategy implementation records. • Relevant photographic evidence.



RE 2 Water Conservation RE 2.1 Water Conservation Strategies

Intent Encourage the implementation of water conservation strategies and provide effective facilities

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

RE 2.1 Score


No Yes N/A

1 C D Use of low flow water closet in construction site office 0 1

2 C D Use of automatic / manual flow control faucet and control valve for urinal in site office

0 1

3 C - Use of low flow water closet in sale office & show room on construction site

0 1

4 C - Use of automatic / manual flow control faucet and control valve for urinal in sale office & show room on construction site

0 1

5 C D Collection of rainwater for reuse within construction / demolition site 0 1





Explanation This indicator aims to encourage the reduction of consumption, for both potable & flushing water. The water wastage habits of some contractors can be improved in actively by means of education, or passively by means of manual / automatic flow control devices for controlling water supply. Both are feasible and will achieve the aims effectively.

Reduction in water use will not only reduce the environmental loading on both water supply and waste treatment facilities, but also to lessen the demand for energy use,



pumping power in the utility network, chemical treatment and the environmental impacts in water treatment process. A variety of water saving facilities is commercially available in Hong Kong. Automatic devices can provide a better service quality, while some manual devices can also provide the same function.

Innovation method:

Use of other water saving device or innovative idea to reduce water consumption in construction / demolition site

This indicator is satisfied if the innovative devices or designs can save water by 15% of the total water consumption.

Submittal The following information shall be provided to demonstrate the compliance of the Strategy Indicators:

• Relevant strategy report. • Relevant photographic and other evidence. • Other relevant supporting documentation for improved and innovative ideas.



RE 3 Timber Use RE 3.1 Timber for Temporary Use

Intent To reduce the use of timber for temporary purpose

Performance Indicators

Stage C D

Sub-criteria Performance

Scale

Non-residential buildings Residential buildings

0 No reused / recycled timber used for temporary works

No reused / recycled timber used for temporary works

1 ≥50% of reused / recycled timber used for temporary works (used 2 times)

≥50% of reused / recycled timber used for temporary works (used 2 times)


≥ 80% of reused / recycled timber used for temporary works (used 5 times)


≥90% of reused / recycled timber used for temporary works (used 10 times)

Non-residential Buildings Score (PC-NR) Residential Buildings Score (PC-R)

RE 3.1 Score

Explanation Timber is a global valuable resource. The construction industry in Hong Kong consumes a substantial amount of timber, with much of the timber being disposed to landfill sites after minimal use. Supply of timber is becoming increasingly scarce and there is no forest in Hong Kong that can supply timber for the industry. Reduction in timber consumption and reuse of timber for temporary works, such as hoarding, formwork, site office fabrication and other temporary use at sites is required. The proportion of timber use in a typical construction site is shown as follows,

• Hoarding 5% • Formwork 80% • Site Office fabrication 5% • Site accommodation 10%

Timber used for temporary work (such as formwork) for building construction is the dominant contributing factor on appropriate resource use. The use of reused / recycled timber for formwork could be conducted through the Contractor’s own initiative or specified in the Design Stage.

As far as global environmental sustainability is concerned, the source of timber rather than the type of timber is more emphasized in this indicator.



Submittal The following information shall be provided to demonstrate the compliance of the Performance Indicators:

• Confirmation from the Contractor with relevant material use records. • Relevant photographic evidence. • Construction planning / method statement(s) in relation with temporary works to

illustrate the effort in reducing the use of timber and to be verified at the later stage of the construction programme.



RE 3.2 Minimization of Timber Use

Intent To minimize the use of timber during construction


Stage C -


Scale


0 Minimization < 50% of the timber use Minimization < 50% of the timber use

1 Minimization ≥ 50% of the timber use Minimization ≥ 50% of the timber use




RE 3.2 Score

Explanation Timber is a global valuable resource and saving of timber is our priority in conserving our environment. The construction industry in Hong Kong consumes a substantial amount of timber, with many of them disposed to landfill sites after minimal use. Supply of timber becomes increasingly scarce and there is no forest in Hong Kong that can supply timber for the industry.

Timber demand can be minimized by a number of measures during construction including:

• Use of large metal formwork

• Use of metal hoarding

• Use of precast façade and staircase using metal formwork

• Use of semi-precast slab to replace timber slab formwork.

It is estimated that more than 90% of timber consumed in construction with traditional method can be saved1.

1 Pang N.W. etal Green building – the housing authority experience, Seminar on “Green Building” 2003




• Confirmation from the Contractor with relevant material use records. • Relevant photographic evidence. • Construction planning / method statement(s) in relation with temporary works to

illustrate the effort on reducing the use of timber and to be verified at the later stage of the construction programme.



RE 4 Material Use RE 4.1 Recycled Material Use

Intent Reduce material consumption and reduce demands on limited natural resources by using recycled materials.


Stage C -


Scale


0 < 5% of materials & components used with recycled content

< 5% of materials & components used with recycled content

1 ≥ 5% of materials & components used with recycled content

≥ 5% of materials & components used with recycled content






RE 4.1 Score

Explanation This indicator is assigned to encourage contractors to follow the material reuse requirements as stipulated in the Designer’s specification, or to establish and implement material use strategy by their own initiative. The material use strategy shall include categorization of materials used for building construction and refurbishment, and to determine which building parts / components can be constructed from reused materials.

In general, this performance indicator assesses a wide range of items. Major items of applicable recycled materials that correspond to a significant proportion of building structure are recycled steel rebar, recycled aggregates and recycled brick and blocks. Miscellaneous materials of plastic, packing board of paper, wood chips arid etc.

As concrete is one of the most commonly used building materials, use of PFA or recycled aggregate in concrete are also encouraged. For large sections, PFA grading should be specified and complied with Work Branch Technical Circular (WBTC) 14/90. Crushed concrete aggregate should also compile with the British Standard BS 882.

The use of materials that are recycled or consisted of recycled content is also encouraged. However, it must ensure that the reuse or recycled materials have no adverse impact to the environment.

This indicator is applicable for materials to be used in major permanent building



components and materials, such as building structure, false ceiling, partition wall, paint, door, window, etc.

Since a contractor has a better capability to determine the possible amount of materials with recycled content that can be used in each specific project, the score in the construction stage is awarded to the Contractor for increasing the percentage of materials used with recycled content. The percentage of material used as described in the performance indicators shall not less than the percentage of materials and components used with recycled content specified in the Design Stage.

Submittal The following information shall be provided to demonstrate the compliance of the

Performance Indicators:

• Material use strategy report. • Reused / recycled material use record. • Other relevant evidence, such as photos. • Evidence to demonstrate that the recycled /reused materials will not cause

adverse health impact to the future building users and occupants.

The information is as required shall be able to demonstrate the recycled material source, categorization of material used, reused locations and amount of reused / recycled materials for building construction / refurbishment. The exact material content in purchased recycled materials should be verified from the supplier and submitted for review.

The quantities of reused or recycled material should be determined on the basis of either the weight or volume of the total amount of material used. Reuse of material could be the material/ components salvaged from the existing structure during the demolition process and/or recycled materials from other sources and demolition sites.

The recycled content of material shall be determined by dividing the weight/volume of recycled content in the item by the total weight/volume of all material in the item. The percentage of materials and components reused with recycled content relative to the total permanent materials used for building construction in the shell and core areas, as well as the materials provided by the landlord in rental and sellable areas shall be calculated.



RE 4.2 Construction Waste Recycling

Intent To recycle construction waste generated in building construction process


Stage C -


Scale Non-residential buildings / Residential buildings

0 < 3% of salvageable waste recycled and reused on or off site

1 ≥ 3% of salvageable waste recycled and reused on or off site



RE 4.2 Score

Explanation When a building is constructed or refurbished, there are often substantial quantities of materials that are salvageable. The salvageable materials can be recycled and recovered for use in the construction process at the same site or other sites.

Before commencement of any construction and refurbishment work, the Contractor is expected to carry out an estimation survey and to identify and categorize various types of salvageable materials from the building construction process in order to maximize the scale of salvageable waste recovery.

The construction waste shall be categorized into inert and non-inert waste. Salvageable materials, including inert waste, such as metals, bricks and tiles, as well as non-inert waste such as timber, paper and plastic, should be removed from the buildings before being discarded to landfill. Selective sequential demolition in refurbishment work should be adopted to remove one type of material at one time to avoid mixing. If the building services equipment inside the A&A site can be reused or the metallic parts of the equipment are recyclable, hand dismantle is also recommended. The collected construction waste shall be recovered on site and transferred to a recovery factory or public filling area for reclamation. A certain essential items and their corresponding percentage of recovery are suggested as follows:

• 100% recovery of inert portion of excavated material and demolition debris from construction and refurbishment works,

• 100% recovery of metallic waste, • 100% recovery of non-contaminated paper and cardboard



Submittal The following information shall be provided to demonstrate compliance with the Performance Indicators:

• Construction waste management plan. • Waste management records for all construction waste for reuse in the same site or

other sites, recycled and recovered in a factory, and inert material for government reclamation.

• Other relevant evidence, such as photos, drawings. • Trip-ticket record with verifications by project engineer / architect representative,

the record should record the amount of waste conveyed to landfill or public filling area.

• Receipts from recycle vendors on confirmation of recycled material received

Relevant information are required to demonstrate the recycled material sources in the building construction work, categorization of material used, amount of reusable / recyclable materials collected with proper handling.

The quantities of salvaged material should be determined based on either the weight or volume of the total amount of material produced and collected. The percentage of materials actually salvaged relative to the total amount of potentially salvageable materials produced during the construction and refurbishment process shall be calculated.



RE 4.3 Demolition Waste Recycling

Intent To recycle demolished materials generated in building demolition process


Stage - D



0 < 20% of salvageable waste transfer to other site / recovery plant or on-site for recycle and reuse

1 ≥ 20% of salvageable waste transfer to other site / recovery plant or on-site for recycle and reuse



RE 4.3 Score

Explanation When a building is demolished (exclude destruction work in A&A works), there are often substantial quantities of materials are salvageable. The salvageable materials can be recycled and recovered for use in the construction process in the same site or other sites or recycled in recovery plant.

Before commencement of demolition work, contractor is encouraged to carry out a field survey and to identify and categorize various types of salvageable materials of the building in order to maximize the scale of salvageable waste recovery. Also, hand demolition and dismantling should be considered prior to demolition using point breaker, bulldozer, crane ball and chain, and explosives.

The demolition waste shall be categorized into inert and non-inert waste. Salvageable materials, including inert waste, such as metals, bricks, masonry, excavated spoil and tiles, as well as non-inert waste such as timber, paper, plastic, should be removed from the buildings before demolition. Selective sequential demolition should be adopted to remove one type of material at one time to avoid mixing. If the building services equipment inside the building can be reused or the metallic parts of the equipment are recyclable, hand dismantle is also recommended. The collected demolition waste shall be recovered on site, transfer to recovery plant or public filling areas for reclamation.

Since a contractor has a better capability to determine the possible amount of salvageable materials and to identify the possible recycling and reusable materials, field survey together with drawings to indicate the locations of various types of salvageable materials and a strategy plan to categorize the demolished materials for recover and disposal are essential to reduce waste in a demolition site. Presumably, recyclable waste salvaged for export in lieu of local consumption will also be credited in this performance indicator.

In addition, a designated area to sort the waste material on-site before delivery to



recovery factory and other sites, or to store the reusable materials on site for new building construction, shall be assigned by the Contractor

Submittal The following information shall be provided to demonstrate the compliance of the

Performance Indicators:

• Demolition waste management plan. • Waste management records for all salvageable materials demolished and for

reuse in the same site or other site, recycled and recovered in factory, inert material for government reclamation.

• Other relevant evidence, such as photos and drawings. • Trip-ticket record with verifications by project engineer / architect representative,

the record should record the amount of waste conveyed to landfill or public filling area.

• Receipts from recycle vendors on confirmation of recycled material received

Relevant information are required to demonstrate the recycled material sources in the building, categorization of material used, amount of reusable / recyclable materials for the future / other building refurbishment.

The quantities of salvaged material should be determined based on either the weight or volume of the total amount of material demolished. The percentage of salvageable materials salvaged relative to the total amount of salvaged materials demolished and dismantled during the demolition process shall be calculated.



RE 4.4 Environmentally-Friendly Materials

Intent Encourage use of environmentally friendly building materials to reduce environmental impacts.


Stage C -


Scale


0 < 25% of environmentally friendly materials used

< 25% of environmentally friendly materials used

1 ≥ 25% of environmentally friendly materials used

≥ 25% of environmentally- friendly materials used

2 ≥ 50% of environmentally-friendly materials used

≥ 50% of environmentally friendly materials used

3 ≥ 75% of environmentally friendly materials used

≥ 90% of environmentally friendly materials used


RE 4.4 Score

Explanation Use of environmentally-friendly material helps to minimize the life-cycle environmental impacts. Adoption of green building materials is encouraged and should be awarded. Meanwhile, environmentally-friendly construction methods, such as the use of system formwork aiming to cut down wastage on site, are encouraged.

This indicator is applicable for major building materials, such as external walls, permanent partition walls, cladding, flat roof, floor finishes, windows, curtain walls, doors and paint, which are constructed in the shell and core area, as well as materials provided by the landlord in rental and sellable areas. Environmental-friendly material is defined as meeting (1) Compliance with the Hong Kong Green Label Scheme, Product Environmental Indicator for Construction Materials, produced by the Green Council and Hong Kong Productivity Council, or (2) Summary Rating `A’ in The Green Guide to Specification – An Environmental Profiling System for Building Materials and Components, BRE, or (3) `Good’ in Environmental Resource Guide, The American Institute of Architects.

The designer and contractor are capable to determine the possible amount of environmentally friendly materials used, the score for the construction stage is awarded to the Contractor for increasing the use of environmentally friendly materials in the building construction process. The percentage of material used, as described in the performance indicators, includes the percentage of environmentally friendly materials and components specified in the Design Stage.



Submittal The following information shall be provided to demonstrate compliance with the Performance Indicators:

• Environmentally friendly material use strategy report. • Material use record and validation on the actual consumption compared with the

designed amount as written in the strategy report • Other evidence, such as photos.

The information is required to demonstrate the type of environmentally friendly materials used, locations of applications and amount of environmentally friendly materials used for building construction / refurbishment.



LOADINGS (LD) LD 1 Pollution


Intent To minimise and mitigate outdoor pollution and the subsequent health and environmental impacts under global and local considerations

Stage C D


This indicator is assigned to reassert the importance of pollution reduction issues in the overall building environmental performance through the current statutory requirements.

Construction and demolition works should be carried out in full compliance with the Air Pollution Control Ordinance, Noise Control Ordinance, Water Pollution Control Ordinance, Ozone Layer Protection Ordinance and all relevant regulations, as well as statutory Code of Practice and Technical Memorandum from various government departments such as EPD, FEHD, AFCD, etc.

Heavy construction machineries and vehicles shall minimise effluent discharge and satisfy statutory requirements.

Statutory requirements, no assessment is required in CEPAS.



LD 1.1 Air Pollution

Intent To minimise and mitigate outdoors air pollution and the subsequent local and global health and environmental impacts.

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

LD 1.1 Score


No Yes N/A

1 C D Construction / demolition site air pollution and dust control management plan formulated and implemented by Contractor

0 1

2 C D Site personnel(s) are designated to carry out regular inspections on the effectiveness of air pollution control measures, and to carry out dust control in construction / demolition site

0 1

3 C D Construction / demolition works that leads to significant amount of dust generation shall be provided with proper sheltering to minimise dust spread

0 1

4 C - To store dusty materials in enclosed area, to carry out dusty material mixing works within sufficient sheltering, and to perform dust suppression measures to minimise dust spread

0 1

5 C D All refrigerants used for air-conditioning systems in site office are zero ozone depleting potential

0 1





Explanation Dust, odour and incompletely combusted substances are the most common pollutant source in construction sites, due to various construction and demolition activities. Effective and comprehensive air pollutant control is required to minimise the spread of



pollutants within the site and to the surrounding area. Good management and implementation strategy will reduce the health risk to the personnel within a site.

Item 1: This indicator is assigned to encourage the establishment of an air pollutant management strategy and to implement the strategy effectively. The `Air’ aspect as described in the checklist for site planning, Annex 3.3 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred.

Item 2: This indicator is assigned to encourage effective implementation of dust control measures in a construction / demolition site. The checklist as described in Annex 4.4 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred. The designated person is required to carry out regular inspections of the construction site, according to the guideline.

Items 3 to 4: The indicators described are the most common air pollutant issues in construction / demolition site. The indicators are assigned to encourage effective dust control during the construction and demolition process. Any plan formulation or dust control measures shall also be in line with the requirements as stipulated in the Air Pollution Control (Construction Dust) Regulation.

Item 5: Reduction of ozone-depleting substances will benefit the global and local environment. The aim of this indicator is to reduce the release of ozone depleting substances such as chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) into the atmosphere from building materials and service systems. CFC and HCFC heavily implicates in the depletion of the ozone layer. The majority of CFC and HCFC related substances come from heating, ventilation, air conditioning and refrigeration equipment. This indicator is assigned to award the use of environmentally-friendly refrigerant in air conditioning equipment.

Innovation Item:

Other innovative method to further reduce air pollution generated from construction / demolition process

This is a bonus score for innovation in reducing air pollution generated on site.

Submittal The following information shall be provided to demonstrate the effectiveness of the implementation and compliance with the Strategy Indicators:

• Air pollution management strategy. • Strategy implementation records. • Relevant evidence such as photos, checklists, equipment specification and

drawings. • Other relevant supporting document for improved and innovative ideas.



LD 1.2 Water Pollution

Intent To minimise and mitigate water pollution and the subsequent health and environmental impacts in global and local considerations

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

LD 1.2 Score


No Yes N/A

1 C D Construction / demolition site water pollution management plan formulated and implemented by Contractor

0 1

2 C D Site personnel(s) designated to carry out regular inspection and on the effectiveness of water pollution control measures

0 1

3 C D Separate rainwater drainage path is provided such that contaminated waste water discharge to rainwater system can be avoided

0 1

4 C D Minimisation and treatment of wastewater from building construction / demolition

0 1

5 C D Reuse of washing water and providing silt removal facilities before discharged to drain

0 1

6 C D Soil and waste water from construction site toilets discharged to government sewer

0 1

7 C - Effective grease trap is provided for each site canteen 0 1





Explanation Wastewater from construction / demolition site mainly comes from rainwater stream, site toilets, site canteens, water effluent from construction process and cleansing.



Effective water pollution control methods shall be provided to minimise adverse environmental impact. All wastewater pollution control strategies shall be implemented together with routine inspection and maintenance is required.

Item 1: This indicator is assigned to encourage establishment of water pollutant management strategy and to implement the strategies effectively. The `Water Quality’ aspect as described in the checklist for site planning, Annex 3.3 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred.

Item 2: This indicator is assigned to encourage effective implementation of water pollution control measures in construction site. The checklist as described in Annex 6.2 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred. The designated person is required to carry out regular inspections on the construction site according to the guidelines.

Item 3: In construction / demolition site, rainwater usually mix with soil and sand and creates a sand stream. Solid barrier or sand bags are possible means to filter the rainwater collection path, and to minimize soil and sand discharge into rainwater drain. Surface run-off from construction / demolition site are discharged into storm drains via adequately designed sand / silt removal facilities such as sand traps, silt traps and sediment basins. The sections for `Surface Run-off and Ground Water’ in the EPD ProPECC PN1/94 shall be referred.

Item 4: Wastewater generated from general building construction / demolition activities, such as concreting, plastering, cleansing, are discharged into foul sewers with sufficient silt removal facility and pH adjustment. The section for `Wastewater from Building Construction’ in the EPD ProPECC PN1/94 shall be referred.

Item 5: Boring and drilling water, wheel washing water and the water for testing & sterilization of water retaining structures and water pipes, are reused after sedimentation. Discharge of the waste water into storm drains shall be filtered via silt removal facilities. For discharging of Bentonite slurries, acid cleaning, etching and pickling wastewater shall be treated properly before discharging to foul sewers. Relevant sections in the EPD ProPECC PN1/94 shall be referred.

Item 6: Wastewater discharged from toilet shall be discharged to government sewer as far as possible. For remote site, small sewage treatment plant can be constructed in accordance with the EPD ProPECC PN1/94.

Item 7: Grease trap shall be sufficiently large to separate grease and wastewater effectively. Cleansing and inspection openings shall also be provided. The guidelines as described in the EPD ProPECC PN1/94 shall be referred.

Innovation Item:

Other innovative method to further reduce water pollution generated from construction / demolition process

This is a bonus score for innovation in reducing water pollution generated on site.



Submittal The following information shall be provided to demonstrate the implementation effectiveness and compliance of the Strategy Indicators:

• Water pollution management strategy. • Strategy implementation records. • Relevant evidence such as photos, checklists, equipment specification and




LD 1.3 Noise Pollution

Intent To minimise and mitigate noise pollution and the subsequent health and environmental impacts in global and local considerations

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

LD 1.3 Score


No Yes N/A

1 C D Formulation and implementation of a good management plan for the control of noise pollution at the construction / demolition site.

0 1

2 C D Designation of site personnel(s) for conducting regular inspection on the effectiveness of noise control measures.

0 1

3 C - Reduce noise from construction activities based on EPD non-statutory requirements

0 1





Explanation Noise from construction / demolition site mainly generated from work process and machineries. Effective noise pollution control methods shall be provided to minimise adverse environmental impact. All noise pollution control strategies shall be implemented together with routine inspection and maintenance.

Item 1: This indicator is assigned to encourage establishment of noise management strategy and to implement the strategies effectively. The `Noise’ aspect as described in the checklist for site planning, Annex 3.3 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred.

Item 2: This indicator is assigned to encourage effective implementation of noise



pollution control measures in construction site. The checklist as described in the Annex 5.2 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred. The designated person is required to carry out regular inspection on the construction site according to the guidelines.

Item 3: The EPD ProPECC PN 2/93: Noise from Construction Activities – Non-statutory Controls shall be referred.

Innovation Item:

Other innovative method to further reduce noise pollution generated from construction process

This is a bonus score for innovation in reducing noise pollution generated on site.


• Noise pollution control strategy. • Strategy operation records. • Relevant evidence such as photos, checklists, equipment specification and




LD 2 Waste Management


Intent To reduce waste generation, disposal and the associated environmental impacts

Stage C D


This indicator is assigned to reassert the importance of waste reduction issues in the overall building environmental performance.

Carry out construction and demolition works with full compliance to the Waste Disposal Ordinance and all relevant regulations from various government departments such as EPD, FEHD, AFCD, etc.

Some buildings with hazardous waste disposal (e.g. Chemical and Asbestos) during construction / demolition should also abide by the corresponding Ordinances, Guidelines and Codes of Practice from EPD (e.g. Waste Disposal (Chemical Waste) (General) Regulation).

Statutory requirements, no assessment in CEPAS is required.



LD 2.1 C&D Waste Management

Intent To encourage the implementation of effective construction and demolition waste management plan to reduce, recycle and reuse C&D waste

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

Innovation 0 or 1

LD 2.1 Score


No Yes N/A

1 C D Contractor established and implemented a construction, demolition & municipal waste management plan in construction / demolition site

0 1

2 C D Designated person(s) to inspect the implementation effectiveness on various waste management strategies regularly

0 1

3 C D Designated centralised space(s) and facilities for sorting and storage of recyclable and non-recyclable waste specified

0 1

4 C D Provision of air tight system to store organic waste that may leads to bad smell and hygienic problem

0 1





Explanation This indicator aims to assess the establishment of waste management strategies and provision of facilities for sorting and storage of municipal, construction and demolition waste. Specific area shall be assigned for different waste types, such as organic, non-recyclable and recyclable wastes. The sorting of waste type can be carried out manually or automatically in the designated area(s).

Hong Kong is facing serious long-term problems with poor management of construction and demolition (C&D) waste materials in the current practices. Relying on reclamation projects as the major outlets in reusing the inert C&D materials is



extremely unstable and would not be sustainable in the long run. Meanwhile, many salvageable materials discarded, demolished and dismantled in demolition and construction site are usually disposed into public landfill that leads to a serious land burden for this city.

Item 1: This indicator is assigned to encourage contractors to implement effective construction and demolition waste management to reduce, recycle and reuse C&D waste. To comply with this indicator, the main contractor is required to formulate a comprehensive waste management plan and carry out weekly implementation records. The main contractor and developer’s / owner’s representative shall monitor contractor’s performance and implementation records on C&D waste management.

To comply with this indicator, the C&D waste management on construction and demolition site shall follow the methodologies and criteria as stipulated in the ETWB Technical Circular (Works) No. 19/2005: Environmental Management on Construction Sites. Reduction, Reuse and Recycling of C&D materials are the principles of the waste management plan. C&D waste is categorized into inert and non-inert wastes. The salvageable C&D waste can be reused on the same site or in other sites, or recycled and recovered in factory. Salvageable materials, including inert waste, such as metals, bricks and tiles, as well as non-inert waste such as timber, paper, plastic, should be addressed in the waste management plan.

For inert waste, the Waste Flow Table as described in the ETWB Technical Circular (Works) No. 15/2003 shall be used. In addition, the main contractor shall formulate relevant weekly record tables to record the salvageable inert and non-inert C&D waste being generated, C&D waste that have been reused for the same site or other sites, disposal as public fill and transferred to factory for recovery. For inert C&D wastes, the record tables and their waste categorisation as described in the CEDD Technical Circular No. 42/2004 shall be used as reference for contractor’s management plan formulation. For non-inert waste, the record format shall be similar to that of inert waste, but the categorisation shall include, but not limited to timber, paper, plastics, etc.

The waste management plan shall be formulated specifically for the site construction and demolition activities. The waste management plan shall include, but not limited to the key types of waste to be reduced, waste reduction targets, waste reduction programmes, packaging waste management and waste disposal procedures. Apart from that, effective implementation is required to ensure the strategies are applicable to all site workers and cover the entire site area, including site office. The strategies can be in form of educational basis, instructions or guidelines.

Besides, the EPD guidelines on Site Practice for Waste Reduction in Construction Industry shall also be referred.

Item 2: Designated person(s) are required to inspect the implementation effectiveness of various waste management strategies on site every week. The designated person(s) should ensure the strategies are implemented according to the guidelines as stipulated in the waste management plan and keep up-to-date with the waste management records.

The designated person(s) shall arrange guiding and warning materials, such as information sheet and poster, to ensure all workers and staff on site acknowledge the target and method of the C&D waste management plan. Also, the designated person(s) shall look for improvement strategies to enhance the effectiveness of waste management and maximising the recyclable waste collection and reuse.

Item 3: Centralised space(s) could be allocated in form of open space or enclosed area, but enclosed area is recommended. However, for open space storage, sufficient distance away from the working space shall be maintained so as to



minimize both odour and health risks. The centralised space shall be located with convenient waste delivery access and with minimal environmental impact due to waste transportation within the site. The waste shall be at least classified to inert and non-inert, organic (e.g. from site kitchen), paper, masonry, timber, metals, plastics, concrete and excavated spoil categories. The checklist as described in the Annex 7.3 & 7.4 of the Best Practice Guide: Environment – Best Practice Guide for Environmental Protection on Construction Sites, published by the Hong Kong Construction Association, shall be referred.

Item 4: Exposed waste storage, particularly for organic waste, leads to unwanted odour and health risks to the surroundings. Provision of self-closing air tight system could be in automatic or manual operations.

Innovation method:

Innovative method to reduce waste generation or effective waste management in construction / demolition site

This is a bonus score for innovation in construction and demolition waste management.


• Waste management plan. • Strategy implementation records. • Relevant evidence such as photos, checklists, equipment specification and




SITE AMENITIES (SA) SA 1 Landscape

SA 1.1 Tree Preservation

Intent To preserve and protect existing trees within the construction / demolition site


Stage C D



0 Without effective tree preservation and protection measures in site

1 -

2 Effective tree preservation and protection measures provided by Contractor in site (for all designated trees retain on the original locations or other places)

3 Effective tree preservation and protection measures provided by Contractor in site (for all designated trees including old & valuable trees (if any) retain on the original

locations)

SA 1.1 Score

Explanation This indicator is assigned to encourage effective tree preservation and protection measures provided and implemented by the Contractor, with the support of Developer and Designers. The existing trees with good amenity value shall be incorporated in the landscape design of the new development, to form part of the landscape area. Survey to existing trees is required at the Design Stage. To comply with this indicator, all identified and designated healthy trees within the site shall be retained, preserved and protected by the Contractor within the site or transferred to other site for reuse. Implementation and monitoring of the tree protection measures on site to minimize the adverse impact to the preserved trees due to construction activities shall be included. Specific tree preservation of transplantation measures shall be formulated for large trees with high amenity value.

The pre-requisite requirements for this indicator are field survey, and preservation and reuse of all existing healthy trees within the site that have been designated by the designer / client at the Design Stage. Damaging of any designated healthy existing trees due to improper protection and preservation is not eligible to obtain score in this indicator.

The definition of old and valuable trees shall refer to the ETWB Technical Circular (Works) No. 29/2004: Registration of Old and Valuable Trees, and Guidelines for their Preservation. Retaining all existing old & valuable trees at the original locations is required due to lesser potential damage to the trees. Retaining of other old trees at the original locations is also encouraged. Therefore, additional score is awarded if all designated trees as identified in the design stage are retained at the original



locations.


• Tree protection and re-planting strategy. • Tree survey and delivery records. • Drawings showing the existing and new tree locations and numbers. • Specific method statement for tree preservation and transplantation and

monitoring reports for tree preservation works.



SA 2 Security

SA 2.1 Security

Intent To provide effective security measures in construction / demolition site

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

SA 2.1 Score


No Yes N/A

1 C D Effective passive security facilities provided in construction / demolition site

0 1

2 C D Effective active security measures provided in construction / demolition site

0 1

3 C D No construction materials / demolished salvageable materials lose reported to police throughout the entire construction period

0 1





Explanation Item 1: This indicator is assigned to encourage implementation of effective passive security facilities in construction / demolition site, such as security guard stand, access barrier / gate, security fence. Reasonable quantities of facilities and provisions shall be provided in according with the scale and complexity of the site.

Item 2: This indicator is assigned to encourage implementation of effective active security facilities in the construction / demolition site, such as closed circuit television (CCTV), door alarm, electronic access control and security guards, etc. Sufficient facilities and provisions shall be provided in order to reflect the scale and complexity of the site.

Item 3: Lose of construction materials may lead to delay of construction program and additional construction cost. Lose of demolished salvageable materials also reflect



inadequacy of security measures on site. Police’s record on construction site lose case report is a good indicator in determining the effectiveness of site security. In order to comply this indicator, contractor should declare that they have no construction materials / demolished salvageable materials lose case reported to police throughout the construction / demolition period.


• Security strategy report. • Strategy implementation records. • Drawings showing security measures.



NEIGHBOURHOOD AMENITIES (NA) NA 1 Sustainability Economics

NA 1.1 Sustainability Economics

Intent To recognise the effort of the additional expenditure on improving environmental performance in construction / demolition site and its surroundings


Stage C D



0 Financial contribution on improving environmental performance: <0.1% final construction / demolition cost

1 Financial contribution on improving environmental performance: 0.1% ≤ expenditure <1.5% final construction / demolition cost

2 Financial contribution on improving environmental performance: 1.5% ≤ expenditure <1% final construction / demolition cost

3 Financial contribution on improving environmental performance: ≥ 1% final construction / demolition cost

NA 1.1 Score

Explanation Sustainability economics relates to the estimated additional investment provided by the developer/client (include the cost contributed by contractor on improving environmental performance within CEPAS context) to pay for the building construction and demolition that are beneficial to improve the environmental and social performance.

Expenditure on improving environmental performance is essential as a driving force of performance enhancement in the entire construction / demolition process. The actual cost expenditure to provide facilities and carry out environmental improvement measures shall be calculated and compared with the final construction / demolition cost.

The expenditure shall include construction / demolition cost spend on facilities, equipment and installations, as well as the professional service cost of various building environmental survey, study and analysis works, during construction / demolition work period.




• Cost calculation and relevant evidence.



SITE IMPACTS (SI) SI 1 Nature Conservation

SI 1.1 Nature Conservation

Intent To conserve and enhance the natural environment by protecting the ecological value of the site in terms of habitat and biodiversity

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

SI 1.1 Score


No Yes N/A

1 C D If habitat ecological value was identified on site in the Design / Pre-Design Stage and designed to conserve, sufficient protection measures are provided by Contractor

0 1

2 C D If biodiversity ecological value was identified on site in the Design / Pre-Design Stage and designed to conserve, sufficient protection measures are provided by Contractor

0 1

3 C D Contractor established a site ecological value protection strategy in the early stage of construction / demolition work

0 1





Explanation Hong Kong contains large area of natural landscapes, which support a diverse assemblage of plant and animal species. However, the expanding building development, connecting roads and parking areas, are endangering the wildlife corridors and leave lesser room for the survival of species. Therefore, at site level, CEPAS encouraged creating or retaining habitats for the use of indigenous species to maintain / increase the local biodiversity. The natural environment is a valuable asset belonging to the people in Hong Kong and their future generations. New



developments could lead to non-recreatable nature environment for the habitats.

A survey on the site-wide ecological value is encouraged in the Design / Planning Stage. If habitat and biodiversity ecological value are identified on a construction / demolition site, this indicator is assigned to encourage proper and effective protection of biodiversity and habitat ecological value on the site. The indicators can be scored only if the ecological value can be well protected and maintained until the handover to next building stage.


• Site ecological value protection strategy report. • Relevant drawings and photo evidence.



SI 2 Heritage Conservation

SI 2.1 Heritage Conservation

Intent To conserve and protect archaeological and historic buildings, monuments, components and artefacts

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

SI 2.1 Score


No Yes N/A

1 C D Contractor established a site cultural heritage protection strategy in the early stage of construction / demolition work

0 1

2 C D If buildings, monuments, components and artefacts with cultural heritage value were identified on site in the Design / Planning Stage and designed / planned to conserve, sufficient protective measures are implemented by contractor

0 1

3 C D Contractor established preventive measures to minimize adverse structural and environmental impacts towards the immediate adjacent building(s) with cultural heritage value

0 1





Explanation If the existing building on site has a cultural heritage value, reuse of the building is encouraged. This practice is common in many European countries, Mainland China and other some countries. Unfortunately, many developers or building owners in Hong Kong are unwilling to reuse the existing building but prefer to rebuild a building with more sellable floor area. Hence, this indicator is assigned to encourage reuse of existing building with heritage value. Reuse of the entire building, or a large portion of existing building, such as building envelope, courtyard, are acceptable in this indicator.

A survey on the site-wide cultural heritage value is encouraged in the Design / Pre-



design Stage. If the existing building, monuments or their components and artefacts on site are identified with cultural heritage value in the site survey during Design / Pre-design Stage, the designated building or portions for reuse or transfer to other site shall be well protected and maintained.


• Site cultural heritage protection strategy report. • Relevant drawings and photo evidence.



SI 3 Buildability

SI 3.1 Buildability

Intent To construct the building and its facilities ease of construction and less materials used, and encourage the use of innovative construction technology to enhance buildability

Strategy Indicators


Scale Non-residential buildings Residential buildings

0 0 ≤ PC < 0.25 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1 0.75 ≤ PC ≤ 1

Innovation 0 or 1 0 or 1


SI 3.1 Score

Non-residential Residential Item Stage Strategy

No Yes N/A No Yes N/A

1 C - Widely use of precast structure other than that specified in the Design Stage

0 1 0 1

2 C - Widely use of full precast module and / or integrated services module other than that specified in the Design Stage

0 1 0 1

3 C - Use of other precast components in building other than that specified in the Design Stage

0 1 0 1



NON-RESIDENTIAL Sub-criteria performance score (PC) (B)/(A) = PC



RESIDENTIAL Sub-criteria performance score (PC) (B)/(A) = PC

Explanation Standardised building components, simple installation details and building services systems, pre-fabricated building elements, shortest services routes, integrated building components, simple site fabrication works, storage management of construction site materials, are possible methods to enhance buildability. These components usually have relatively lower energy content compared with the in-situ ones and provide material wastage. Wider use of prefabrication is one of the solutions



that help to overcome many of these problems inherent in in-situ construction. Shorter construction period and lesser material consumed could be the benefits by better buildability.

Construction process usually requires heavy demand on technologies, logistic management, site supervision and quality assurance. Also, construction works give rise to considerable environmental problems, such as dust nuisance from on-site concrete mixing, noise from the use of metal formwork, excessive waste from the use of timber formwork, and muddy site run-off. The contractor is encouraged to adopt innovative method, and to create project-specific construction technologies to satisfy the high quality requirements of various construction activities as well as the buildability. The developer will be benefited by the new technology to gain a better profit, whilst the Contractor is benefited by sound technical competitiveness.

In addition, simple building services installation details, shorter services routes and simple site fabrication methods are also encouraged to improve buildability.

To further minimise the cost and energy consumption for transportation of precast structure as well as to maintain the local labour activities, the indicators encourage pre-fabrication structures, modules and components manufactured in Hong Kong .

Item 1: This indicator is assigned to encourage widely adoption of other precast structure such as precast slab, staircase, column, beam, etc. This indicator is awarded if precast structure is proposed and provided by the Contractor other than the precast structure specified in the Design Stage.

Item 2: This indicator is assigned to encourage widely adoption of full precast module, such as residential flat, modular office, and the adoption of integrated services module, such as prefabricated toilet unit, plant room unit, bathroom unit, which completed with full building services equipment, pipes, ducts and cable containments. This indicator is awarded if full precast module and / or integrated services module is proposed and provided by the Contractor other than the full precast module / integrated service module specified in the Design Stage.

Item 3: This indicator is assigned to encourage the use of other precast component in building, such as meter chamber, services riser, refuse chute, standardized door leaf opening, window, etc. This indicator is awarded if precast component is proposed and provided by the Contractor other than the precast components specified in the Design Stage.

Innovation Item:

Use of other improved and innovative building technology to enhance the buildability and minimise environmental impacts

This indicator is assigned to encourage improved and innovative building technology to enhance buildability and minimise environmental impacts. This is a bonus point for buildability.


• Relevant technical proposals, drawings, implementation records and photo evidence.

• Other relevant supporting document for improved and innovative ideas.



NEIGHBOURHOOD IMPACTS (NI) NI 1 Environmental Impact Assessment


Intent To avoid environmental impacts and to minimise and control the adverse effects due to environmental impacts during construction / demolition process

Stage C D


This indicator is assigned to reassert the importance of environmental impact assessment in the context of building environmental performance.

Environmental Impact Assessment (EIA) as stipulated in the Environmental Impact Assessment Ordinance and the Technical Memorandum on Environmental Impact Assessment Process not only is a strategic process, but also is an active planning tool for building development. It aims to achieve a balance between environmental management and development decision.

The Contractor is required to expedite all required measures to minimise the potential environmental impacts. The Developer is required to monitor the effectiveness of the impact minimisation measures provided by the Contractor.



NI 2 Environmental Interactions

NI 2.1 Environmental Nuisance

Intent To minimise adverse environmental nuisance towards the surrounding buildings and streets due to construction / demolition process

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

NI 2.1 Score


No Yes N/A

1 C D Designate a proper site material storage area to minimise nuisance to the surroundings

0 1

2 C D Designate a proper hoisting facilities locations to minimise the risk to the surroundings

0 1

3 C D Implement other environmental nuisance control measure in construction / demolition site

0 1



NON-RESIDENTIAL + RESIDENTIAL Sub-criteria performance score (PC) (B)/(A) = PC

Explanation Item 1: This indicator is assigned to encourage contractors to designate a proper area to store site materials in order to reduce nuisance to the surroundings. For instance, cutting machine shall be located in the site far away from site boundary and nearby buildings. Sand or similar materials shall be located away from windy locations within the site such that blowing of sand to the surroundings can be minimized.

Item 2: This indicator is assigned to encourage contractors to designate a proper area to locate hoisting facilities in order to reduce the risk to the surroundings. The hoisting locations and materials hanging path shall avoid locating directly above the worker circulation area in the site and site surrounding pavements. If this is inevitable, movable barrier and / or warning signs shall be provided and installed to separate the material hanging paths and human circulation paths.



Item 3: Apart from the environmental nuisance control measures as described in Items 1 and 2, other nuisance control measures are encouraged to consider. The BD PNRC 17: Control of Environmental Nuisance from Construction Sites shall be referred for this indicator. Common environmental nuisance are identified in the practice note, and some of them are statutory requirements and some are not. The checklist can be used as reference to minimise environmental nuisance. This indicator is assigned to award the contractor who has implemented all environmental nuisance control measures (where relevant to the construction / demolition site) as described in the BD PNRC 17.

Meanwhile, the Contractor is encouraged to minimize site activities that cause nuisance to the surrounding road, utilities and pass-by, such as long-term road evacuation near heavy traffic streets, long-term utility services suspension, loading / unloading of building materials at the site entrance that forms a barrier to the surrounding pavements and streets, etc.



• Other relevant supporting document for improved and innovative ideas.



NI 3 Impacts to Communities

NI 3.1 Impacts to Communities

Intent To encourage public participatory considered construction / demolition activities, and to minimize nuisance generated from the site that cause adverse impacts to the community and surroundings

Strategy Indicators


0 0 ≤ PC < 0.25

1 0.25 ≤ PC < 0.5

2 0.5 ≤ PC < 0.75

3 0.75 ≤ PC ≤ 1

NI 3.1 Score


No Yes N/A

1 C D Contractor to identify the potential sensitive receivers nearby the site due to construction / demolition activities.

0 1

2 C D Establish a continuous communication channel among the Developer / Owner, Contractor and the surrounding residents and building users.

0 1

3 C D Contractor to designate a person to record and review the opinion, complaints and advices provided by the surrounding residents and building users, and to coordinate with the project staff to improve the site activities.

0 1





Explanation Item 1: This indicator is assigned to encourage contractors to identify potential sensitive receivers near the construction / demolition site due to site activities. The Contractor shall avoid site activities with severe nuisance to the identified sensitive receivers (e.g. school, hospital, residential flats) where possible, and to provide protective and remedial measures.

Item 2: This indicator is assigned to encourage a continuous communication between the building Developer / Owner, Contractor and the surrounding residents and building users. A communication channel for the surrounding residents and building



users to convey their opinions, complaints and advices shall be established such that the building Developer / Owner / Contractor is able to adjust the new building construction / demolition method and remedial works to minimize the environmental and safety impacts to the communities.

Item 3: This indicator is assigned to encourage the Contractor to designate a person to record and review the opinion, complaints and advices raised by the surrounding residents and building users. The personnel can be a site-based staff or office-based staff, who coordinates with the project site staff to improve the construction / demolition activities where feasible.





APPENDIX 1. LIST OF ABBREVIATIONS The following abbreviations shall be referred in this assessment scheme:

A&A Addition and Alternation ACH Air Change per Hour AFCD Agriculture, Fisher and Conservation Department, HKSAR Government AP Authorized Person ArchSD Architectural Service Department, HKSAR Government ASHRAE American Society of Heating, Refrigerating and Air-conditioning Engineers, USA BA Building Authority, HKSAR Government BD Buildings Department, HKSAR Government BRE Building Research Establishment, UK BREEAM Building Research Establishment Environmental Assessment Method, UK BS British Standard BSRIA Building Services Research and Information Association, UK C&D Construction and Demolition CASBEE Comprehensive Assessment System of Building Environmental Efficiency for Japan CCMS Central Control and Monitoring System CEDD Civil Engineering and Development Department, HKSAR Government CEPAS Comprehensive Environmental Performance Assessment Scheme CIBSE Chartered Institution of Building Services Engineers, UK CIE Commission Internationale de Eclairage CIRIA Construction Industry Research and Information Association, UK COP Code of Practice DSD Drainage Services Department, HKSAR Government EIA Environmental Impact Assessment EMGB-Taiwan Evaluation Manual for Green Buildings in Taiwan 綠建築標章 EMO Energy Management Opportunity EMSD Electrical and Mechanical Services Department, HKSAR Government EPD Environmental Protection Department, HKSAR Government ETWB Environmental, Transport and Works Bureau, HKSAR Government EUI Energy Utilisation Index FEHD Food and Environmental Hygiene Department FSD Fire Services Department, HKSAR Government GBC Green Building Challenge GBTool Green Building Tool GFA Gross Floor Area GHEM - PRC Green House Evaluation Manual – China Assessment Handbook for Ecological

Residential Building 中國生態住宅技術評估手册 HK-BEAM Hong Kong Building Environmental Assessment Method HKHA Hong Kong Housing Authority, HKSAR Government HKHD Hong Kong Housing Department, HKSAR Government HKIA The Hong Kong Institute of Architects HKIE The Hong Kong Institution of Engineers HKIP Hong Kong Institute of Planners HKIS The Hong Kong Institute of Surveyors



HKPolyU The Hong Kong Polytechnic University HKSAR Hong Kong Special Administrative Region of the People’s Republic of China HVAC Heating, Ventilation and Air-Conditioning HVACR Heating, Ventilation, Air-Conditioning and Refrigeration HVCA Heating and Ventilating Contractors Association, UK IAQ Indoor Air Quality IBI Intelligent Building Index, Hong Kong IEQ Indoor Environmental Quality IESNA Illumination Engineering Society of North America ISO International Organization for Standardization LA Land Authority, HKSAR Government LandsD Lands Department, HKSAR Government LEED Leadership in Energy and Environmental Design, USA LCA Life Cycle Analysis LCC Life Cycle Costing NABERS The National Australian Building Environmental Rating System of Australia N/A Not Applicable O&M Operation and Maintenance ODS Ozone-depleting substances OTTV Overall Thermal Transfer Value PlanD Planning Department, HKSAR Government PGBC Professional Green Building Council, Hong Kong PNAP Practice Notes for Authorised Persons and Registered Structural Engineers, issued by

BD, HKSAR Government PNRC Practice Notes for Registered Contractors, issued by BD, HKSAR Government ProPECC PN Professional Persons Environmental Consultative Committee Practice Notes, issued by

EPD, HKSAR Government SC Site Coverage SDU Sustainable Development Unit, HKSAR Government SPeAR® Sustainable Project Appraisal Routine SUSDEV21 Sustainable Development for the 21st Century, HKSAR Government WSD Water Supplies Department, HKSAR Government



APPENDIX 2. SUMMARY OF CEPAS INDICATORS

CONSTRUCTION STAGE

Categories Sub-criteria Indicators C D N R

Indoor Environmental Quality (IE)

Space provision for cleansing facilities and storage of cleansing equipment √ √ √ √

Regular cleansing and good housekeeping in toilets and site office √ √ √ √

Hygiene management plan for construction / demolition site √ √ √ √

Designated person to inspect the site regularly to identify health and hygienic problem areas √ √ √ √

Provide training and information on health and hygiene issues to construction site staff √ √ √ √

IE 1 Health & Hygiene

IE 1.1

Health& Hygiene

Use of no / low emission cleaning products √ √ √ √

Strategy

Design with sufficient quantity of fresh air supply for the site office and show room on site √ √ √ √

Design of commercial kitchen ventilation system within construction site with effective oily fume and odour removal in canteens and food business √ √ √

Implement IAQ management strategies for occupied buildings under construction √ √ √

Use of no/low emitting building and furnishing materials √ √ √

IE 2

IAQ

IE 2.1

IAQ Strategies

Innovative method to further improve IAQ in construction / demolition site √ √ √ √

Strategy

Design of lighting with optimum illuminance and glare control for in site office. √ √ √ √

Design with daylight and electric lighting integration in site office and allow more daylight access to the interior √ √ √ √

Use of T5 fluorescent lamps in site office √ √ √ √

IE 3 Lighting Environment

IE 3.1

Visual Quality & Comfort

Innovative method to further improve the indoor visual comfort and lighting energy efficiency within construction site √ √ √ √

Strategy

Building Amenities (BA)

BA1 Safety

Provide a safe habitation and working environment in and around a construction / demolition site √ √ √ √

Pre-requisite

Major contractors for the construction / demolition projects are accredited with ISO 9000 quality management system √ √ √ √

Major contractors for the construction / demolition projects are accredited with ISO 14000 environmental management system √ √ √ √ BA2 Management

BA 2.1

Building Management

Major contractors for the construction / demolition projects are accredited with OHSAS 18001 occupational health and safety management system

√ √ √ √

Strategy C

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Environmental training provided for the major contractors’ management and supervisory staff at the early stage of construction / demolition process

√ √ √ √

Environmental training provided for the construction workers at the early stage of construction / demolition process √ √ √ √

Comprehensive building records provided and conveyed to building operator and designer with satisfaction √ √ √

Comprehensive and effective testing and commissioning works provided and satisfy the designer’s requirements √ √ √

Scheduled trainings of various building facilities and services installations provided by the contractors and suppliers to the building operators

√ √ √

Innovative method to further improve the construction / demolition management effectiveness √ √ √ √

Strategy

Resources Use (RE)

Formulation and implementation of an overall energy management strategy for the construction / demolition site √ √ √ √

Formulation and implementation of an overall energy management strategy for the site office √ √ √ √

Formulation and implementation of a lighting operation strategy to minimise unnecessary lighting operation in the construction / demolition site at night √ √ √ √

Minimum 50% of all electrical appliances and equipment used in site offices complied with Grade 2 or better as defined in the EMSD Energy Efficiency Labelling Scheme for Household Appliances and Office Equipment / Multi-function Device for site office & sales areas

√ √ √ √

Minimum 50% of all electrical appliances and equipment used in sale office and show room on construction site complied with Grade 2 or better as defined in the EMSD Energy Efficiency Labelling Scheme for Household Appliances and Office Equipment / Multi-function Device for site office & sales areas

√ √ √ √

Use of renewable energy in the construction / demolition site √ √ √ √

RE1 Energy Efficiency

RE 1.1

Energy Efficiency

Modification of the design and to facilitate construction / demolition methods or sequence that can reduce energy consumption during construction process √ √ √ √

Strategy

Use of low flow water closet in construction site office √ √ √ √

Use of automatic / manual flow control faucet and control valve for urinal in site office √ √ √ √

Use of low flow water closet in sale office & show room on construction site √ √ √

Use of automatic / manual flow control faucet and control valve for urinal in sale office & show room on construction site √ √ √

Collection of rainwater for reuse within construction / demolition site √ √ √ √

RE2 Water Conservation

RE 2.1

Water Conservation Strategies

Use of other water saving device or innovative idea to reduce water consumption in construction / demolition site √ √ √ √

Strategy




RE 3.1

Timber for Temporary Use

Reduce the use of timber for temporary use √ √ √ √

Performance

RE3 Timber Use

RE 3.2

Minimization of Timber Use Minimize the use of timber during construction √ √ √

Performance

RE 4.1

Recycled Material Use

Reduce material consumption and reduce demands on limited reserves of natural resources by the use of recycled materials. √ √ √

Performance

RE 4.2

Construction Waste Recycling

To recycle construction waste generated in building construction process √ √ √

Performance

RE 4.3

Demolition Waste Recycling

To recycle demolished materials generated in building demolition process √ √ √

Performance

RE4 Material Use

RE 4.4

Environmentally-Friendly Materials

Use of environmentally -friendly building materials to reduce environmental impacts.

√ √ √

Performance

Loadings (LD)

Minimise outdoor pollution and the subsequent health and environmental impacts under global and local considerations

√ √ √ √

Pre-requisite

Construction / demolition site air pollution and dust control management plan formulated and implemented by Contractor √ √ √ √

Site personnel(s) are designated to carry out regular inspections on the effectiveness of air pollution control measures, and to carry out dust control in construction / demolition site

√ √ √ √

Construction / demolition works that leads to significant amount of dust generation shall be provided with proper sheltering to minimise dust spread √ √ √ √

To store dusty materials in enclosed area, to carry out dusty material mixing works within sufficient sheltering, and to perform dust suppression measures to minimise dust spread √ √ √

All refrigerants used for air-conditioning systems in site office are zero ozone depleting potential √ √ √ √

LD1

Pollution

LD 1.1

Air Pollution

Other innovative method to further reduce air pollution generated from construction / demolition process

√ √ √ √

Strategy




Construction / demolition site water pollution management plan formulated and implemented by Contractor √ √ √ √

Site personnel(s) designated to carry out regular inspection and on the effectiveness of water pollution control measures √ √ √ √

Separate rainwater drainage path is provided such that contaminated waste water discharge to rainwater system can be avoided √ √ √ √

Minimisation and treatment of wastewater from building construction / demolition √ √ √ √

Reuse of washing water and providing silt removal facilities before discharged to drain √ √ √ √

Soil and waste water from construction site toilets discharged to government sewer √ √ √ √

Effective grease trap is provided for each site canteen √ √ √

LD 1.2

Water Pollution

Other innovative method to further reduce water pollution generated from construction / demolition process √ √ √ √

Strategy

Formulation and implementation of a good management plan for the control of noise pollution at the construction / demolition site.

√ √ √ √

Designation of site personnel(s) for conducting regular inspection on the effectiveness of noise control measures. √ √ √ √

Reduce noise from construction activities based on EPD non-statutory requirements √ √ √

LD 1.3

Noise Pollution

Other innovative method to further reduce noise pollution generated from construction process √ √ √ √

Strategy

Reduce waste generation, disposal and associated environmental impacts

√ √ √ √

Pre-requisite

Contractor established and implemented a construction, demolition & municipal waste management plan in construction / demolition site √ √ √ √

Designated person(s) to inspect the implementation effectiveness on various waste management strategies regularly

√ √ √ √

Designated centralised space(s) and facilities for sorting and storage of recyclable and non-recyclable waste specified √ √ √ √

Provision of air tight system to store organic waste that may leads to bad smell and hygienic problem √ √ √ √

LD2 Waste Management

LD 2.1

C&D Waste Management

Innovative method to reduce waste generation or effective waste management in construction / demolition site √ √ √ √

Strategy

Site Amenities (SA)

SA1 Landscape

SA 1.1

Tree Preservation

Effectiveness of tree preservation and protection measures provide by Contractor in site (for all designated trees retain on the original locations or other places)

√ √ √ √

Performance

SA2 Security

SA 2.1

Security

Effective passive security facilities provided in construction / demolition site

√ √ √ √

Strategy




Effective active security measures provided in construction / demolition site √ √ √ √

No construction materials / demolished salvageable materials lose reported to police throughout the entire construction period √ √ √ √

Neighbourhood Amenities (NA)

NA1 Environmental Economics

NA 1.1

Environmental Economics

Financial contribution percentage on improving environmental & Social related construction site performance

√ √ √ √

Performance

Site Impacts (SI)

If habitat ecological value was identified on site in the Design / Pre-design Stage and designed to conserve, sufficient protection measures are provided by Contractor √ √ √ √

If biodiversity ecological value was identified on site in the Design / Pre-design Stage and designed to conserve, sufficient protection measures are provided by Contractor √ √ √ √

SI 1 Nature Conservation

SI 1.1

Natural Conservation

Contractor established a site ecological value protection strategy in the early stage of construction / demolition work √ √ √ √

Strategy

Contractor established a site cultural heritage protection strategy in the early stage of construction / demolition work √ √ √ √

If buildings, monuments, components and artefacts with cultural heritage value were identified on site in the Design / Planning Stage and designed / planned to conserve, sufficient protective measures are implemented by Contractor

√ √ √ √ SI 2 Heritage Conservation

SI 2.1

Heritage Conservation

Contractor established preventive measures to minimize adverse structural and environmental impacts towards the immediate adjacent building(s) with natural heritage value √ √ √ √

Strategy

Widely use of precast structure other than that specified in the Design Stage √ √ √

Widely use of full precast module and / or integrated services module other than that specified in the Design Stage √ √ √

Use of other precast components in building other than that specified in the Design Stage √ √ √

SI 3 Buildability

SI 3.1

Buildability

Use of other improved and innovative building technology to enhance the buildability and minimise environmental impacts √ √ √

Strategy

Neighbourhood Impacts (NI)

NI 1

Environment Impact Assessment

Avoid environmental impacts and to minimise and control the adverse effects due to environmental impacts during the construction / demolition process

√ √ √ √

Pre-requisite

Designate a proper site material storage area to minimise nuisance to the surroundings √ √ √ √

NI 2 Environmental Interactions

NI 2.1

Environmental Nuisance

Designate a proper hoisting facilities locations to minimise the risk to the surroundings √ √ √ √

Strategy




Implement other environmental nuisance control measures in construction / demolition site √ √ √ √

Contractor to identify the potential sensitive receivers nearby the site due to construction / demolition activities. √ √ √ √

Establish a continuous communication channel among the Developer / Owner, Contractor and the surrounding residents and building users. √ √ √ √ NI 3 Impact to

communities

NI 3.1

Impact to communities

Contractor to designate a person to record and review the opinion complains and advices provided by the surrounding residents and building users, and to coordinate with the project staff to improve the site activities.

√ √ √ √

Strategy



APPENDIX 3A. CEPAS SCORING & WEIGHTING TABLES FOR CONSTRUCTION STAGE (CONSTRUCTION WORKS)


Criteria Wc Sc Sub-Criteria Ssc

IE1 Health & Hygiene 0.86 IE1.1 Health & Hygiene

IE2 IAQ 0.73 IE2.1 IAQ Strategies

IE3 Lighting Environment 0.62 IE3.1 Visual Quality & Comfort

CONSTRUCTION (Strategy)



BA2 Management 0.78 BA2.1 Building Management


Resources Use (RE)


RE1 Energy Efficiency 0.58 RE1.1 Energy Efficiency

RE2 Water Conservation 0.70 RE2.1 Water Conservation

Strategies




Loadings (LD)


LD1.1 Air Pollution

LD1.2 Water Pollution LD1 Pollution 0.78

LD1.3 Noise Pollution

LD2 Waste Management 0.84 LD2.1 C & D Waste Management


Site Amenities (SA)


SA2 Security 0.52 SA2.1 Security


Site Impacts (SI)


SI Nature Conservation 0.67 SI1.1 Nature Conservation

SI2 Heritage Conservation 0.52 SI2.1 Heritage Conservation

SI3 Buildability 0.93 SI3.1 Buildability






NI1 Impact Assessment Pre-requisite

NI2 Environmental Interactions 0.65 NI2.1 Environmental Nuisance

NI3 Impacts to Communities 0.93 NI3.1 Impacts to Communities


Resources Use (RE)


RE3.1 Timber for Temporary Use RE3 Timber Use 0.92

RE3.2 Minimization of Timber Use

RE4.1 Recycled Material Use

RE4.2 Construction Waste Recycling

RE4 Material Use 0.69

RE4.4 Environmentally-Friendly Materials

CONSTRUCTION (Performance)





NA1 Sustainability Economics 0.93 NA1.1 Sustainability

Economics


Site Amenities (SA)


SA1 Landscape 0.73 SA1.1 Tree Preservation


Total Performance Score Performance Weighting (Wp) Total Strategy Score Strategy Weighting (Ws)

Total CEPAS Score (Construction)



APPENDIX 3B. CEPAS SCORING & WEIGHTING TABLES FOR CONSTRUCTION STAGE (DEMOLITION WORKS)



IE1 Health & Hygiene 0.86 IE1.1 Health & Hygiene

IE2 IAQ 0.73 IE2.1 IAQ Strategies

IE3 Lighting Environment 0.62 IE3.1 Visual Quality & Comfort

DEMOLITION (Strategy)



BA2 Management 0.78 BA2.1 Building Management


Resources Use (RE)


RE1 Energy Efficiency 0.58 RE1.1 Energy Efficiency

RE2 Water Conservation 0.70 RE2.1 Water Conservation

Strategies




Loadings (LD)


LD1.1 Air Pollution

LD1.2 Water Pollution LD1 Pollution 0.78

LD1.3 Noise Pollution

LD2 Waste Management 0.84 LD2.1 C & D Waste

Management


Site Amenities (SA)


SA2 Security 0.52 SA2.1 Security


Site Impacts (SI)


SI1 Nature Conservation 0.67 SI1.1 Nature Conservation

SI2 Heritage Conservation 0.52 SI2.1 Heritage Conservation






NI1 Environmental Impact Assessment

Pre-requisite

NI2 Environmental Interactions 0.65 NI2.1 Environmental Nuisance

NI3 Impacts to Communities 0.93 NI3.1 Impacts to Communities


Resources Use (RE)


RE3 Timber Use 0.92 RE3.1 Timber for Temporary Use

RE4 Material Use 0.69 RE4.3 Demolition Waste Recycling

DEMOLITION (Performance)

Site Amenities (SA)


SA1 Landscape 0.73 SA1.1 Tree Preservation






NA1 Sustainability Economics 0.93 NA1.1 Sustainability

Economics


Total Performance Score Performance Weighting (Wp) Total Strategy Score Strategy Weighting (Ws)

Total CEPAS Score (Demolition)

construction stage

Documents