Report

6 Waste Management Implications

6.1 Legislation, Standards and Guidelines

6.1.1.1 The relevant legislation related to the Study for the assessment of waste management implications include:

· Environmental Impact Assessment Ordinance (EIAO) (Cap. 499), including Technical Memorandum on Environmental Impact Assessment Process (TM-EIAO), Annex 7 and Annex 15;

· Waste Disposal Ordinance (WDO) (Cap. 354) and subsidiary regulations;

· Land (Miscellaneous Provisions) Ordinance (Cap. 28); and

· Public Health and Municipal Services Ordinance (Cap. 132) - Public Cleansing and Prevention of Nuisances Regulation.

6.1.1.2 Under the WDO, some of the subsidiary regulations are relevant to the present EIA, including:

· Waste Disposal (Chemical Waste) (General) Regulation (Cap. 354C); and

· Waste Disposal (Charges for Disposal of Construction Waste) Regulation (Cap. 354N).

6.1.2 Waste Disposal Ordinance

6.1.2.1 The WDO prohibits any unauthorised disposal of wastes. Construction waste, defined under Cap. 354N of the WDO, refers to a substance, matter or thing which is generated from construction works. It includes all abandoned materials, whether processed or stockpiled or not, before being abandoned, but does not include sludge, screenings or matter removed or generated from desludging, desilting or dredging works.

6.1.2.2 Under the WDO, wastes can only be disposed of at designated waste disposal facilities licensed by Environmental Protection Department (EPD). Breach of this Ordinance can lead to a fine and/or imprisonment. The WDO also stipulates the requirements for issuing licenses for the collection and transportation of wastes.

6.1.3 Waste Disposal (Chemical Waste) (General) Regulation

6.1.3.1 Under the WDO, the Waste Disposal (Chemical Waste) (General) Regulation provides regulations for chemical waste control, and administers the possession, storage, collection, transport and disposal of chemical wastes. EPD has also issued a ‘guideline’ document, the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes (1992), which details how the Contractor should comply with the regulations on chemical wastes.

6.1.4 Waste Disposal (Charges for Disposal of Construction Waste) Regulation

6.1.4.1 Under the Waste Disposal (Charges for Disposal of Construction Waste) Regulation, construction waste delivered to a landfill for disposal must not contain more than 50% by weight of inert material. Construction waste delivered to a sorting facility for disposal must contain more than 50% by weight of inert material, and construction waste delivered to a Public Fill Reception Facilities for disposal must consist entirely of inert material.

6.1.5 Land (Miscellaneous Provisions) Ordinance

6.1.5.1 The inert portion of Construction and Demolition (C&D) materials may be taken to public filling facilities including public filling area, public filling barging points and stockpiling areas. These facilities usually form part of land reclamation schemes and are operated by Civil Engineering and Development Department (CEDD). The ordinance requires Dumping Licenses (to be issued by CEDD) to be obtained by individuals or companies, who deliver inert C&D materials to the public filling facilities.

6.1.6 Public Cleansing and Prevention of Nuisances Regulation

6.1.6.1 This regulation provides control on illegal tipping of wastes on unauthorised (unlicensed) sites.

6.1.7 Other Relevant Guidelines

6.1.7.1 The documents and guidelines listed in Table 6.1 are also related to waste management and disposal during construction:

Table 6.1 Other Relevant Documents and Information

Bureau / Department	Documents / Guidelines / Technical Circulars
Environmental Protection Department (EPD)	· Waste Disposal Plan for Hong Kong (December 1989) · Waste Reduction Framework Plan, 1998 to 2008 · A Policy Framework for Management of Municipal Solid Waste (2005-2014), (December 2005) · Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes (1992) · A Guide to the Chemical Waste Control Scheme (2016) · A Guide to the Registration of Chemical Waste Producers (2016) · Monitoring of Solid Waste in Hong Kong (2018)
Civil Engineering and Development Department (CEDD)	· Project Administration Handbook for Civil Engineering Works, 2018 Edition
EPD / CEDD	· New Disposal Arrangements for Construction Waste (1992)
Development Bureau (DEVB)	· Works Branch Technical Circular (WBTC) No. 2/93, Public Dumps · WBTC No 2/93B, Public Filling Facilities · WBTC No. 16/96, Wet Soil in Public Dumps · WBTC Nos. 4/98 and 4/98A, Use of Public Fill in Reclamation and Earth Filling Project · WBTC No. 12/2000, Fill Management · WBTC No. 19/2001, Metallic Site Hoardings and Signboards · WBTC No. 12/2002, Specification Facilitating the Use of Recycled Aggregates · ETWB TCW No. 22/2003 & 22/2003A, Additional Measures to Improve Site Cleanliness and Control Mosquito Breeding on Construction Sites · ETWB TCW No. 19/2005, Environmental Management on Construction Sites · Development Bureau Technical Circular (Works) (DEVB TCW) No. 6/2010, Trip-ticket System for Disposal of Construction and Demolition Material · DEVB TCW No. 8/2010, Enhanced Specification for Site Cleanliness and Tidiness · DEVB TCW No. 9/2011, Enhanced Control Measures for Management of Public Fill
Planning Department (PlanD)	· Chapter 9 Environment, Hong Kong Planning Standards and Guidelines (HKPSG)

6.2 Description of the Environment

6.2.1 Existing Environment

6.2.1.1 As discussed in Section 1, the works area of the Project is located at north-eastern coast of Tung Ping Chau facing towards Ping Chau Hoi. It overlaps mostly with Tung Ping Chau Marine Park. Plover Cove (Extension) Country Park is located at more than 70m to the west of the Project. Part of the works area is currently occupied by Tung Ping Chau Public Pier of approximately 98m long and 5.5m wide. The land use characteristics in the vicinity of the Project site are rural in nature.

6.3 Construction Phase

6.3.1 Identification of Possible Generation of Waste

6.3.1.1 The key construction activities which may lead to the generation of waste include:

· Carrying out site investigation works for detailed design;

· Provision of temporary berthing and mooring facilities (temporary pier) using working barge and/or steel structures supported by piles;

· Installation of piles for the new pier; and

· Removal of temporary pier, modification of existing pier and Installation of remaining piles for the new pier.

6.3.1.2 Waste generation is expected mainly for the construction activities including provision and demolition of temporary berthing and mooring facilities and modification of the existing pier. As for the site investigation works, waste generation is limited in comparison with the other construction activities.

6.3.2 Assessment Methodology

6.3.2.1 The assessment of waste management implications from handling, storage, collection, transportation and disposal of solid waste materials generated by the Project have been undertaken in accordance with Annexes 7 and 15 of the TM-EIAO.

6.3.2.2 The waste management hierarchy given below prioritises various waste management methods, that will be applied in the development of mitigation measures for waste.

· Avoidance/Minimisation – Avoiding or minimising waste generation through adopting a better design and construction methodology;

· Reuse/Recycle – Reusing and recycling the waste on-site as well as promoting segregation of waste materials; and

· Disposal – Disposal of any inert C&D materials to public fills as last resort.

6.3.3 Analysis of Activities and Waste Generation

6.3.3.1 The quantities, types and the activity period of the waste generation during the Project have been estimated, based on a tentative construction programme, the proposed preliminary design, and the construction methods that would minimise the generation of wastes.

6.3.3.2 The management of waste associated with the handling, transportation and disposal of wastes arising from the above estimate depends on the capacity of collection, transfer and disposal facilities.

6.3.4 Proposal for Waste Management

6.3.4.1 As discussed in Section 2, multi-prone measures have been proposed to avoid/minimise and reuse/recycle the waste generated from the Project.

6.3.4.2 Regarding waste avoidance and minimisation, the Project itself has proactively avoided the demolition of the whole existing pier, and hence minimises over 600m³ C&D materials generated from the demolition of the existing pier structures. Based on the current design, pier structures including deck structures and roof will be constructed by prefabrication method as far as practicable to reduce waste generation onsite. In addition, the diameter of the piles is about 1m, which has been optimised to minimise the waste generation during the construction.

6.3.4.3 From the reuse and recycle perspectives, the deck structures of the temporary pier will be mainly composed of steel structures which could be reused and recycled after the completion of the Project. The surplus inert C&D materials generated by the Project would be reused off-site as fill materials where possible. On-site sorting will be carried out on the barge to promote segregation of waste materials. Suitable containers would be provided to temporarily store the sorted materials such as metals, timbers, plastics etc.

6.3.4.4 After considering all the opportunities for avoidance/minimisation and reuse/recycle of waste, the waste quantities and disposal outlets are evaluated for each type of waste. The impacts caused by handling (including labelling, packaging and storage), collection, and reuse/disposal of wastes have been addressed and appropriate mitigation measures have been proposed.

6.3.5 Identification and Evaluation of Waste Management Implications

6.3.5.1 The main activities which would potentially result in the generation of waste include, the construction of temporary berthing and mooring facilities and the proposed pier, and the demolition of temporary berthing and mooring facilities. As for site investigation works, waste generation is negligible in comparison with the major construction stages.

6.3.5.2 Different types of waste to be generated during the construction phase can be divided into the following distinct categories based on their source and compositions:

· C&D materials:

o Inert C&D materials:

§ Inert soft C&D materials (such as soil, earth and slurry);

§ Inert hard C&D materials (such as rocks and broken concrete);

o Non-inert C&D materials (such as metal, glass, steel, timber, plastics etc.):

§ Non-recyclable C&D waste (i.e. not suitable for reuse as fill materials and should be recycled before disposal at landfills);

· Chemical wastes from maintenance of construction plant and equipment (such as spent hydraulic oil, waste fuel, spent lubrication oil, cleaning fluids, spent solvent and scrap batteries); and

· General refuse (from work force and floating refuse).

6.3.5.3 Marine sediment is not anticipated to be encountered during the construction of the Project with respect to the geophysical survey results as illustrated in Figure 11.2. The seabed of the proposed works area is mainly covered by boulders and rock pieces with sand patches. The materials excavated during pile construction are suitable for reuse as sand and fill materials.

6.3.5.4 The estimated amount of the types of wastes to be generated during the construction phase is summarised in Table 6.2. It should however be noted that these quantities are preliminary estimates only and would need to be further reviewed and updated as design evolves.

C&D Materials from the Construction Works

6.3.5.5 C&D materials would be generated from the following construction activities:

· Provision of temporary pier;

· Installation of piles for the new pier; and

· Removal of temporary pier, modification of existing pier and Installation of remaining piles for the new pier.

6.3.5.6 Referring to Table 6.2, the types of C&D materials would consist of all inert hard C&D materials, inert soft C&D materials and non-inert C&D materials.

Inert Soft C&D materials

6.3.5.7 Among the construction activities as listed in Section 6.3.5.5, inert soft C&D materials would only be generated during the following construction activities:

· Provision of temporary pier;

· Installation of piles for the new pier; and

· Removal of temporary pier, modification of existing pier and Installation of remaining piles for the new pier.

6.3.5.8 The total quantity of inert soft C&D material generated by the construction of temporary pier and installation of piles for new pier is estimated to be approximately 268m³ subject to the actual site conditions and detailed design. It is mainly contributed from the earth excavated during the construction of the pile foundation.

6.3.5.9 As mentioned in Section 6.3.4.2, the piles of the proposed pier improvement works have been optimised to minimise the needs of excavation of soil during construction. In addition, the Project does not require any land-based excavation works. Thus, the in-situ generation of inert soft C&D materials have been minimised.

Inert Hard C&D Materials

6.3.5.10 Among the construction activities as listed in Section 6.3.5.5, inert hard C&D materials (e.g. concrete) would be generated during the demolition works of temporary berthing and mooring facilities and part of the existing pier.

6.3.5.11 As discussed in Section 2, in order to minimise the generation of C&D materials, the pier structure including deck structure and roof will be constructed by prefabrication method as far as practicable.

6.3.5.12 The temporary pier might comprise a working barge and a steel structures supported by piles. During the demolition of the temporary berthing and mooring facilities, the steel structures which are not classified as inert hard C&D materials will be uninstalled from the piles. The steel structures can be reused and recycled in other projects.

6.3.5.13 Inert hard C&D materials would only be generated from the demolition of piles and part of existing pier to facilitate new pier construction. The quantity of inert hard C&D materials to be generated is minimised to as low as approximately 300 m³ subject to the actual site conditions and detailed design.

Non-inert C&D Materials

6.3.5.14 Non-inert C&D materials include metal, timber, packaging materials, paper etc. Some can be recycled if they are not contaminated, while the contaminated one can only be disposed of as non-inert C&D waste. As the structures of new pier will be constructed by prefabrication method as far as practicable, it is anticipated that no non-inert C&D materials (e.g. formwork using metals and/or timbers) would be arisen from the construction of structures of new pier. Among the construction activities as listed in Section 6.3.5.5, non-inert C&D waste would be generated from small portion of packaging materials which cannot be recycled, as well as during removal of temporary pier and part of the existing pier.

6.3.5.15 Non-inert C&D materials such as paper cardboard, plastic and metal containers would be used during the delivery of construction materials to the Project site for all the aforementioned construction activities. These materials would need to be recycled as far as practicable.

6.3.5.16 The Project itself would not involve any removal of vegetation cover or tree felling. Non-inert C&D materials from tree or vegetation removal is not anticipated.

6.3.5.17 For the demolition of temporary berthing and mooring facilities and part of the existing pier, the majority of the steels from the temporary pier structure could be reused and recycled for the use in other projects as much as practicable. The estimated quantity of non-recyclable non-inert C&D waste generated from the packaging materials and the demolition of temporary berthing and mooring facilities combined is expected to be negligible (≤5m³).

6.3.5.18 To facilitate reuse and recycle of non-inert C&D materials, a specific area would be allocated on the barge for on-site sorting. Suitable containers would be provided to temporarily store the sorted materials such as metals, timbers, plastics etc.

Summary for C&D Materials Management Implications

6.3.5.19 Provided that the mitigation measures are adopted, the potential environmental impacts caused by the storage, handling, transport and disposal of C&D materials are expected to be minimal. It is recommended that C&D materials should be sorted on-site. Mitigation measures to minimise potential environmental impacts are recommended in Section 6.3.7.

General Refuse

6.3.5.20 General refuse is mainly generated from construction work force during the construction period and mainly comprises food waste, waste paper, aluminium cans and plastic bottles during the construction period.

6.3.5.21 Improper storage of general refuse would give rise to adverse environmental impacts in the form of windblown litter and floating refuse which would have odour and visual/water quality impacts. It would also attract pests and vermin if the storage areas are not well maintained and cleaned regularly. Therefore, disposal of waste at approved disposal facilities could avoid adverse environmental impacts.

6.3.5.22 The work force to be deployed on site for the Project is estimated at about 5 for site investigation and 10 for the major construction stages. Based on the generation rate of 0.65 kg/person/day, the total refuse generated per day would be less than 6.5 kg. Therefore, it is estimated that a total of 0.26 tonnes and 4.39 tonnes of general refuse would be generated from work force during the site investigation and major construction stages respectively. The detailed breakdown of estimated amount of general refuse to be generated during construction phase is summarised in Table6.3.

Table 6.3 Summary of General Refuse Generated by Work Force during Construction Phase

Stage

Size of Work Force

Waste Generation Rate

(kg/person/day)

Daily Waste Generation

(kg/day)

Duration

(months) ^[1]

Total Amount Generated (tonnes)

Site Investigation

0.65

3.25

0.26

Other Construction Stages

0.65

6.5

4.39

Note:

[1] Assume 26 working days per month.

6.3.5.23 In order to minimise the final disposal quantities of general refuse, provisions of recycle bins for different types of recyclable waste should be provided together with a general refuse bin. Arrangements should be made with the recycling companies to collect the recycle waste as required. The Contractor should implement an education programme for workers relating to avoiding, reducing, reusing and recycling general waste. Participation in a local collection scheme should be considered by the Contractor to facilitate waste reduction.

6.3.5.24 In addition, floating refuse may also be one of the waste types collected at the Project site. However, it is noteworthy that the Project itself does not intend to discharge waste to the sea or generate any floating refuse. They are brought to the Project site by water current, or by heavy rain or typhoon from the land outside the Project site. According to EPD’s Clean Shorelines Website regarding the statistics of marine refuse collected from marine parks and marine reserve by AFCD in 2019, the monthly averaged marine refuse collected from Tung Ping Chau Marine Park is 6.17 tonnes in 2019. The Project site is about 1.02ha, which approximately occupies about 0.4% of total area of Tung Ping Chau Marine Park of about 270ha. As such, the quantity of floating refuse collected at the Project site during the construction of the Project is anticipated to be as low as about 0.025 tonnes per month. It is estimated that a total of 0.08 tonnes and 0.65 tonnes of floating refuse would be collected during the site investigation and major construction stages respectively. Future contractor will be required to collect floating refuse within the Project site regularly to avoid potential waste accumulation and hygiene issues.

Table 6.3b Summary of General Refuse contributed from Floating Refuse during Construction Phase

Stage	Estimated Collection of Floating Refuse at the Project Site (tonnes/month)	Duration (months)	Total Estimated Amount (tonnes)
Site Investigation	0.025	3	0.08
Other Construction Stages	0.025	26	0.65

Stage

Estimated Collection of Floating Refuse at the Project Site

(tonnes/month)

Duration

(months)

Total Estimated Amount (tonnes)

Site Investigation

0.025

0.08

Other Construction Stages

0.025

0.65

6.3.5.25 Provided that the mitigation measures are adopted, the potential environmental impacts caused by the storage, handling transport and disposal of general refuse are expected to be minimal. It is recommended that general refuse should be collected on a daily basis for disposal. Mitigation measures to minimise potential environmental impacts are recommended in Section 6.3.7.

Chemical Waste

6.3.5.26 Materials classified as chemical waste are listed in the Waste Disposal (Chemical Waste) (General) Regulation. The main chemical waste types arising from the construction sites may include the following:

· Scrap batteries;

· Spent hydraulic oils and waste fuel;

· Spent lubrication oils and cleaning fluids from mechanical machinery; and

· Spent solvent from equipment cleaning activities.

6.3.5.27 Chemical waste may pose the following environmental, health and safety hazards if not stored and disposed of appropriately:

· Toxic to workers;

· Adverse effects on adjacent water; and

· Fire hazards.

6.3.5.28 It is difficult to quantify the amount of chemical waste as it will be highly dependent on the Contractor’s on-site maintenance practice and the quantities of plant and vehicles utilized. Nevertheless, it is anticipated that the quantity of chemical waste, such as lubricating oil and solvent produced from plant maintenance, will be small and about tens of litres per month.

6.3.5.29 Storage, handling, transport and disposal of chemical waste should be arranged in accordance with the Code of Practice on the Packaging, Labelling and Storage of Chemical Waste published by the EPD. Chemical waste should be collected by a licensed chemical waste collector and to be disposed of at a licensed chemical waste treatment and disposal facility. Wherever possible, opportunities for the reuse and recycling of materials will be taken. Mitigation measures for chemical wastes are detailed in Section 6.3.7. Provided that the handling, storage and disposal of chemical wastes are in accordance with these requirements, adverse environmental impacts are not expected.

6.3.5.30 The estimated amount of chemical waste to be generated during construction phase is summarised in Table 6.4.

Table 6.4 Summary of Chemical Waste during Construction Phase

Waste Type	Total Amount Generated
Scrap Batteries	Tens of kilograms per month
Spent Hydraulic Oil and Waste Fuel	Tens of litres/kilograms per month
Spent Lubrication Oil and Cleaning Fluids
Spent Solvent

6.3.5.31 Provided that the mitigation measures are adopted, the potential environmental impacts caused by the storage, handling, transport and disposal of chemical waste are expected to be minimal. It is recommended that chemical waste should be stored properly and collected by a licensed chemical waste collector. Mitigation measures to minimise potential environmental impacts are recommended in Section 6.3.7.

6.3.6 Handling and Transportation Arrangement for Waste Disposal

6.3.6.1 Due to the lack of road network near the Project site, marine transportation should be used to deliver and dispose of the waste generated to the designated disposal outlets. For the waste storage arrangements, the collected wastes will be temporary stored on barge and suitably contained or covered to avoid the waste from blown away to the sea. Waste storage on land is not required.

C&D Materials

6.3.6.2 The surplus inert C&D materials generated from the construction of the Project will be temporarily stored on the barge. They should be properly covered to avoid fugitive dust emission. No barging points and associated conveyor systems will be established and used at the Project site. The inert C&D materials will be delivered to Tseung Kwan O Area 137 Fill Bank by barges or vessels for reuse in other projects.

6.3.6.3 For the non-inert C&D materials generated from the Project, specific areas will be designated on the barges for the segregation of C&D materials into recyclable portion and non-recyclable portion. Recyclable materials such as metal, glass and steel, will be segregated on the barges for off-site recycling. Non-recyclable C&D materials will be collected and placed in bags or bins on the construction barges for temporary storage. Non-recyclable C&D materials in bags or bins will be subsequently either transported by barges/marine vessels directly to West New Territories (WENT) landfill or via Outlying Islands Transfer Facilities (OITF) for final disposal.

General Refuse

6.3.6.4 Recyclable materials from general refuse such as paper, plastic bottles, aluminium cans, will be first segregated on the barges for off-site recycling. General refuse will be collected and placed in bags or bins on the construction barges for temporary storage. General refuse should be properly contained and covered to prevent it from blown away by wind to marine environment. General refuse in bags or bins will be subsequently either transported by barges/marine vessels directly to WENT landfill or via OITF for final disposal.

Chemical Waste

6.3.6.5 Handling of chemical waste should follow the Waste Disposal (Chemical Waste) (General) Regulation and Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes. Chemical will be packed and held in suitably designed containers to prevent leakage, spillage during handling, storage and transport. The containers should be suitable for the substance they are holding, resistant to corrosion, maintained in good condition and securely closed. They should have a capacity of less than 450L unless the specifications have been approved by EPD. Every container should bear an appropriate label in English and Chinese. Chemical waste will be collected and delivered to Chemical Waste Treatment Centre (CWTC) by a licensed waste collector.

Summary of Transportation Routings

6.3.6.6 The tentative transportation routings for the disposal of various types of wastes generated during the construction phase are shown in Table 6.5. Nevertheless, no adverse environmental impacts are anticipated due to the transportation of waste with the implementation of appropriate mitigation measures (e.g. using water-tight containers and vessels equipped with mechanical cover).

Table 6.5 Tentative Transportation Routings for Waste Disposal during Construction Phase

Type of Waste	Disposal Outlet	Tentative Transportation Routing
Non-recyclable C&D waste and general refuse	West New Territories (WENT) Landfill	TPC à Mirs Bay à Tathong Channel à Victoria Harbour (àOITF) à Ma Wan Channel à Urmston Road à WENT Landfill
Inert C&D materials	Tseung Kwan O Area 137 Fill Bank	TPC àMirs Bay àTathong Channel à Tseung Kwan O Area 137 Fill Bank
Chemical waste	Chemical Waste Treatment Centre (CWTC)	TPC àMirs Bay àTathong Channel à Victoria Harbour àLicensed Chemical Waste Collector à CWTC

6.3.6.7 Nevertheless, due to small output of waste of the Project, there will only be a maximum of 2 trips of vessel per working day for waste transportation during the construction phase (for a period between 0800 and 1700 hours). Different types of waste with different disposal outlet would be stockpiled and separated on the barge.

Estimated Waste Quantities

6.3.6.8 A summary of construction waste arising from the Project with recommendation for outlets as well as construction programme for each activity is presented in Table 6.6. The total quantities of each type of construction waste to be generated, reused and disposed of are presented in Table 6.7.

Table 6.6 Summary of Waste Arising with Recommendation for Outlets during Construction Phase

Activities *(Tentative Duration)*	Waste Type		Total Amount Generated, m³^[1]	Total Amount Reused, m³		Total Amount Disposed, m³	Recommended Outlets
Activities *(Tentative Duration)*	Waste Type		Total Amount Generated, m³^[1]	On-site^[^3]	Off-site	Total Amount Disposed, m³	Recommended Outlets
Carrying out site investigation works for detailed design (Q.4 2021 – Q.1 2022)	Inert C&D Materials	Inert Soft C&D Materials	≤ 5	Nil	≤ 5	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
	Inert C&D Materials	Inert Hard C&D Materials	Nil	Nil	Nil	Nil	N/A
	Non-inert C&D Materials	Non-recyclable C&D Waste	Nil	Nil	Nil	Nil	N/A
Provision of temporary pier (Q.1 2024 – Q.3 2024)	Inert C&D Materials	Inert Soft C&D Materials	56	Nil	56	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
	Inert C&D Materials	Inert Hard C&D Materials	Nil	Nil	Nil	Nil	N/A
	Non-inert C&D Materials	Non-recyclable C&D Waste	Nil	Nil	Nil	Nil	N/A
Installation of piles for the new pier (Q.3 2024 – Q.1 2025)	Inert C&D Materials	Inert Soft C&D Materials	117	Nil	117	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
	Inert C&D Materials	Inert Hard C&D Materials	Nil	Nil	Nil	Nil	N/A
	Non-inert C&D Materials	Non-recyclable C&D Waste	Nil	Nil	Nil	Nil	N/A
Removal of temporary pier, modification of existing pier and remaining structures for new pier (Q.1 2025 – Q.1 2026)	Inert C&D Materials	Inert Soft C&D Materials	95	Nil	95	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
	Inert C&D Materials	Inert Hard C&D Materials	300	Nil	300	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
	Non-inert C&D Materials	Non-recyclable C&D Waste	≤ 5	Nil	Nil	≤ 5	Disposal to WENT Landfill
General Construction Activities (Q.4 2021 – Q.1 2022) (Q.1 2024 – Q.1 2026)	Chemical Waste ^[2]		Tens of litres/kilograms per month	N/A	N/A	Tens of litres/kilograms per month	To be collected and delivered by a licensed chemical waste collector and disposed of at a licensed chemical waste treatment and disposal facility
	General Refuse	Unrecyclable from Work Force	5.37 tonnes	N/A	N/A	3.95 tonnes	Disposal to WENT Landfill
		Paper, Metals, Plastics etc. from Work Force		N/A	0.70 tonnes	N/A	Collected by recycler
		Floating Refuse		N/A	N/A	0.73 tonnes	Disposal to WENT Landfill

Notes:

[1] Volume of inert hard C&D materials, inert soft C&D materials and non-recyclable C&D materials are in-situ bulk volume. Bulk factor of inert hard C&D material is 1.25, while the bulk factor of inert soft C&D materials is 1.11.

[2] Chemical waste measured by volume (litres) includes spent hydraulic oil & waste fuel, spent lubrication oil & cleaning fluids, and spent solvent. Scrap batteries are measured by weight (kilograms).

[3] As the Project would adopt prefabrication method as far as practicable and does not have significant works which would enable the reuse of C&D materials such as landfilling, on-site reuse of C&D materials is anticipated to be “Nil”.

Table 6.7 Total Quantities for Each Type of Waste to be Generated, Reused and Disposed of during Construction Phase

Waste Type		Total Amount Generated, m³^[1]	Total Amount Reused, m³		Total Amount Disposed, m³	Recommended Outlets
Waste Type		Total Amount Generated, m³^[1]	On-site ^[3]	Off-site	Total Amount Disposed, m³	Recommended Outlets
Inert C&D Materials	Inert Soft C&D Materials	273	Nil	273	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
Inert C&D Materials	Inert Hard C&D Materials	300	Nil	300	Nil	Deliver to Tseung Kwan O Area 137 Fill Bank for reuse by other projects
Non-inert C&D Materials	Non-recyclable C&D Waste	≤ 5	Nil	Nil	≤ 5	Disposal to WENT Landfill
Chemical Waste ^[2]		Tens of litres/kilograms per month	N/A	N/A	Tens of litres/kilograms per month	To be collected and delivered by a licensed chemical waste collector and disposed of at a licensed chemical waste treatment and disposal facility
General Refuse	Unrecyclable from Work Force	5.37 tonnes	N/A	N/A	3.95 tonnes	To be disposed of at the WENT Landfill
	Paper, Metals, Plastics etc. from Work Force		N/A	0.70 tonnes	N/A	To be collected by recycler
	Floating Refuse		N/A	N/A	0.73 tonnes	To be disposed of at the WENT Landfill

Notes:

6.3.7 Mitigation Measures

6.3.7.1 The mitigation measures for construction phase are recommended based on the waste management hierarchy in the following orders:

Good Site Practices

6.3.7.2 Adverse waste management implications are not expected, provided that good site practices are strictly implemented. The following good site practices are recommended throughout the construction activities:

· Nomination of an approved personnel, such as a site manager, to be responsible for the implementation of good site practices, arrangements for collection and effective disposal to an appropriate facility, of all wastes generated at the site;

· Training of site personnel in site cleanliness, appropriate waste management procedures and concepts of waste reduction, reuse and recycling;

· Provision of sufficient waste disposal points and regular collection for disposal;

· Appropriate measures to minimise windblown litter and dust during transportation of waste by either covering barges or by transporting wastes in enclosed containers; and

· The Contractor should prepare an Environmental Management Plan (EMP), which includes a Waste Management Plan, as recommended in the ETWB TCW No. 19/2005 Environmental Management on Construction Sites. The EMP should be submitted to the Engineer for approval. Mitigation measures proposed in the EIA Report and the EM&A Manual should be adopted.

Waste Reduction Measures

6.3.7.3 Amount of waste generation can be significantly reduced through good management and control. Waste reduction is best achieved at the planning and design phase, as well as by ensuring the implementation of good site practices. The following recommendations are proposed to achieve reduction:

· Segregate and store different types of waste in different containers, skip or stockpiles to enhance reuse or recycling of materials and their proper disposal;

· Proper storage and site practices to minimise the potential for damage and contamination of construction materials;

· Plan and stock construction materials carefully to minimise amount of waste generated and avoid unnecessary generation of waste;

· Sort out demolition debris and excavated materials from demolition works to recover reusable/recyclable portions (i.e. soil, broken concrete, metal etc.); and

· Provide training to workers on the importance of appropriate waste management procedures, including waste reduction, reuse and recycling.

6.3.7.4 In addition to the above measures, specific mitigation measures are recommended for the specific waste types so as to minimise environmental impacts during handling, transportation and disposal of waste.

Storage, Collection and Transportation of Waste

6.3.7.5 Storage of waste on site may induce adverse environmental implications if not properly managed. The following recommendation should be implemented to minimise the impacts:

· Non-inert C&D materials should be handled and stored well to ensure secure containment of the materials;

· Stockpiling area should be provided with covers and water spraying system to prevent materials from wind-blown or being washed away; and

· Different locations on barges should be designated to stockpile each material to enhance reuse.

6.3.7.6 The collection and transportation of waste from works area to respective disposal sites may also induce adverse environmental impacts if not properly managed. The following recommendation should be implemented to minimise the impacts:

· Remove waste in timely manner;

· Employ the vessels with cover or enclosed containers for waste transportation;

· Obtain relevant waste disposal permits from the appropriate authorities;

· Disposal of waste should be done at licensed waste disposal facilities; and

· All dumping trucks engaged, if required to receive waste from vessels, should be equipped with GPS or equivalent system for tracking and monitoring of their travel routings and parking locations by Environmental Team (ET) and Independent Environmental Checker (IEC) to prohibit illegal dumping and landfilling of materials; and

· Keep record and analysis of data collected by GPS or equivalent system relating to travel routings and parking locations of dump trucks/vessels engaged on site.

6.3.7.7 In addition to the above measures, other specific mitigation measures on handling the C&D materials and chemical waste generated from construction phase are recommended in the following subsections.

C&D Materials

6.3.7.8 Wherever practicable, C&D materials should be segregated from other wastes to avoid contamination and ensure acceptability at Public Fill Reception Facilities areas or reclamation sites. The following mitigation measures should be implemented in handling the C&D materials:

· Carry out on-site sorting;

· Make provisions in the Contract documents to allow and promote the use of recycled aggregates where appropriate; and

· Implement a trip-ticket system in accordance with DEVB TC(W) No. 6/2010 Trip Ticket System for Disposal of Construction and Demolition Materials, if dumping trucks are required, for each works contract to ensure that the disposal of C&D materials is properly documented and verified.

6.3.7.9 Details of the recommended on-site sorting and reuse of C&D materials are given below:

Sorting of C&D Materials

6.3.7.10 The inert C&D materials arising from the construction would be sorted to recover the materials off-site before delivering to public fill reception facilities. Reusable/recyclable non-inert C&D materials should be sorted on-site for reuse or recycle whenever possible before considering disposal to landfills as a last resort.

6.3.7.11 The Contractor would be responsible for devising a system to work for sorting of C&D materials and promptly remove all sorted and processed material arising from the construction activities to minimise temporary stocking on-site. It is recommended that the system should include the identification of the source of generation, estimated quantity, arrangement for sorting and/ or collection, temporary storage areas, and frequency of collection by recycling contractors or frequency of removal.

Reuse of C&D Materials

6.3.7.12 As the Project would adopt prefabrication method as far as practicable and does not have significant land filling works which would enable the reuse of C&D materials such as landfilling, on-site reuse of C&D materials is anticipated to be nil. From Table 6.7, surplus C&D materials would be generated throughout the entire Project. Nevertheless, opportunities should be sought for the potential reuse of surplus C&D materials from other projects.

Specification of Inert C&D Materials to be Disposed of off-site

6.3.7.13 In case there are surplus inert C&D materials generated in the Project and are required to be disposed of at the public fill reception facilities, the inert C&D materials should fulfil the following requirements:

· Reclaimed asphalt pavement will not be mixed with other materials when delivered to the public fill reception facilities;

· Moisture content of inert C&D materials will be lowered to 25% max. when delivered to the public fill reception facilities;

· Inert C&D materials delivered to the public fill reception facilities should be of a size less than 250mm; and

· Inert construction waste shall not be in liquid form such that it can be contained and delivered by water-tight containers. Inert C&D materials in liquid form shall be solidified before delivering to the public fill reception facilities.

6.3.7.14 Nevertheless, the acceptance criteria of inert C&D materials to public fill reception facilities are subject to the fill management authority of CEDD.

Use of Standard Formwork and Planning of Construction Materials Purchasing

6.3.7.15 Standard formwork should also be used as far as practicable in order to minimise the arising of non-inert C&D materials. The use of more durable formwork (e.g. metal hoarding) or plastic facing should be encouraged in order to enhance the possibility of recycling. The purchasing of construction materials should be carefully planned in order to avoid over ordering and wastage.

General Refuse

6.3.7.16 General refuse should be stored in enclosed bins separately from construction and chemical wastes. Recycling bins should also be placed to encourage recycling. Preferably enclosed and covered areas should be provided for general refuse collection and routine cleaning for these areas should also be implemented to keep areas clean. A waste collector should be employed to remove general refuse on a daily basis. It is expected that such arrangements would minimise potential environmental impacts.

6.3.7.17 Future contractor will be required to collect floating refuse within the Project site regularly to avoid potential waste accumulation and hygiene issues.

Chemical Waste

6.3.7.18 For those processes which generate chemical waste, it may be possible to find alternatives to eliminate the use of chemicals to reduce the generation quantities or to select a chemical type of less impact on environment, health and safety as far as possible.

6.3.7.19 If chemical wastes are produced at the construction site, the contractors should register with EPD as chemical waste producers. Chemical wastes should be stored in appropriate containers and collected by a licensed chemical waste collector. Chemical wastes (e.g. spent lubricant oil) should be recycled at an appropriate facility as far as possible, whilst the chemical waste that cannot be recycled should be disposed of at either the CWTC, or another licensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.

6.3.8 Residual Waste Management Implications

6.3.8.1 With the implementation of recommended mitigation measures for the handling, transportation and disposal of the identified waste, adverse residual waste management implications are not anticipated for the construction phase.

6.4 Operational Phase

6.4.1 Assessment Methodology

6.4.1.1 The assessment of waste management implications has been undertaken in accordance with Annexes 7 and 15 of the TM-EIAO and the EIA Study Brief No. ESB-306/2017. The waste management hierarchy comprising avoidance, minimisation, recycling/ reuse, and disposal has also been adopted for the assessment.

6.4.1.2 Prior to considering the disposal options for various types of wastes, opportunities for reducing waste generated, on-site or off-site reuse and recycling have been evaluated. After considering all the opportunities for reducing waste generation and maximising reuse, the types and quantities of the remaining wastes required to be disposed of have been estimated and the disposal options for each type of wastes have been described. The potential environmental impacts from the management of wastes have been assessed and relevant mitigation measures have been proposed.

6.4.2 Identification and Evaluation of Waste Management Implications

6.4.2.1 The Project only involves pier improvement works for the existing pier, and no increment of Kaito services frequency would be provided after the pier improvement works. Hence, the Project will not induce any additional municipal solid waste from additional visitors and pier users during the operational phase. Sufficient number of trash bins and recycling bins have already been provided for the collection of general refuse generated by visitors and pier users along the existing hiking trail of Tung Ping Chau. No bin will be required to be provided in the Tung Ping Chau Public Pier as no general refuse is anticipated by the Project during the operational phase.

6.4.2.2 The accumulation of floating refuse at the nearby water is not anticipated as the foundation of the pier is made of pile columns, which would allow circulation of sea water and avoid trapping of floating refuse.

6.4.2.3 Therefore, it is anticipated that there would not be significant increase in the amount of general refuse generated after the pier improvement works. With the implementation of the above-mentioned recommended practices, no adverse waste management implications are anticipated.

6.4.3 Mitigation Measures

General Refuse

6.4.3.1 Sufficient number of trash bins and recycling bins have already been provided for the collection of general refuse generated by visitors and pier users along the existing hiking trail of Tung Ping Chau. No bin will be provided hence no general refuse is anticipated by the Project during the operational phase. Nevertheless, recycling containers are recommended to be provided at suitable locations to encourage recycling of waste such as aluminium cans and plastics.

6.4.4 Residual Waste Management Implications

6.4.4.1 With the implementation of recommended mitigation measures for the handling, transportation and disposal of the identified waste, adverse residual waste management implications are not anticipated for the operational phase.

6.5 Conclusion

6.5.1 Construction Phase

6.5.1.1 Potential waste management implications from the generation of waste during the construction phase have been evaluated. Measures, including the opportunity for on-site sorting, reusing C&D materials etc., are devised in the construction methodology to minimise the surplus materials to be disposed of to a landfill. Recommendations have been made for implementation by the Contractor during the construction period to minimise waste generation and off-site disposal.

6.5.1.2 It is estimated that 273 m³ of inert soft C&D materials would be generated in which all would be reused off-site. Besides, 300m³ of inert hard C&D materials would be generated. The total inert C&D materials (includes inert soft C&D materials and inert hard C&D materials) to be generated would be 573 m³ in which all of them would be delivered to public fill bank for reuse in other projects. In addition, ≤5m³ non-recyclable C&D waste is anticipated during the removal of temporary pier and will be delivered to WENT landfill for final disposal.

6.5.1.3 It is estimated that in total 5.37 tonnes of general refuse, paper, metals, plastics, etc. would be generated from work force, in which 0.70 tonnes would be collected by recycler for offsite reuse and the remaining 3.95 tonnes would be disposed of at WENT Landfill. In addition, it is estimated 0.73 tonnes of floating refuse would be collected during the construction phase to be disposed of at WENT Landfill. Tens of litres / kilograms of chemical waste would be generated per month and it would be recycled by licensed facility as far as possible. The remaining chemical waste would be disposed of at CWTC.

6.5.2 Operational Phase

6.5.2.1 The types of waste that would be generated during the operational phase would be general refuse from the pier users. The Project itself does not intend to increase Kaito services. Hence, it will not induce any additional general refuse from additional visitors and pier users during the operational phase. Sufficient number of trash bins and recycling bins have already been provided for the collection of general refuse generated by visitors and pier users along the existing hiking trail of Tung Ping Chau. No bin will be required to be provided in the Tung Ping Chau Public Pier as no general refuse is anticipated by the Project during the operational phase. Adverse waste management implications are not anticipated.

Activities	Approximate Quantity of C&D Material and Waste to be Generated in Bulk Volume^[^1], m³
	Inert C&D Materials		Non-inert C&D Materials	Chemical Waste^[2]	General Refuse (See Table 6.3)
	Soft C&D Materials	Hard C&D Materials	Non-recyclable C&D Waste	Chemical Waste^[2]	From Workforce	Floating Refuse
Carrying out site investigation works for detailed design	≤ 5	Nil	Nil	Nil	0.26 tonnes	0.08 tonnes
Provision of temporary pier	56	Nil	Nil	Tens of litres/kilograms per month	4.39 tonnes	0.65 tonnes
Installation of piles for the new pier	117	Nil	Nil
Removal of temporary pier, modification of existing pier and remaining piles for new pier	95	300	≤ 5
Total	273	300	≤ 5		5.37 tonnes

6. Do not delete this. This is for Table Number.