6. Waste Management Implications Assessment

6.1 Background

6.1.1 This section identifies the quality and quantity of waste generated from construction and operation phase of the Project, and evaluates the potential waste management implications that may result from waste generated during these phases.

6.1.2 Mitigation measures and good site practices, including waste handling, storage and disposal, have been recommended with reference to relevant waste legislation and management guidelines.

6.1.3 The waste management implications have been assessed in accordance with the requirements of Annexes 7 and 15 of the Technical Memorandum on Environmental Impact Assessment Ordinance (EIAO-TM) as well as requirements set out under Clause 3.4.7 of the EIA Study Brief.

6.2 Environmental Legislations, Standards, and Criteria

6.2.1 The criteria and guidelines for assessing waste management implications outlined in Annex 7 and Annex 15 of the EIAO-TM respectively, and the EIA Study Brief No. ESB-356/2022, will be adopted. The following legislation also cover the handling, treatment and disposal of waste in Hong Kong:

Waste Disposal Ordinance (Cap. 354)

6.2.2 The Waste Disposal Ordinance (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.

6.2.3 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.

Waste Disposal (Chemical Waste) (General) Regulation (Cap. 354C)

6.2.4 Under the WDO, the 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.

Land (Miscellaneous Provisions) Ordinance (Cap. 28)

6.2.5 The inert portion of 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 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.

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

6.2.6 This regulation provides control on illegal tipping of wastes on unauthorised (unlicensed) sites. The illegal dumping of wastes can lead to a fine and/or imprisonment.

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

6.2.8 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.

6.2.9 The other relevant guidelines include the following:

· 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 Projects;

· WBTC Nos. 25/99, 25/99A and 25/99C, Incorporation of Information on Construction and Demolition Material Management in Public Works Subcommittee Papers;

· WBTC No. 12/2000, Fill Management;

· WBTC No. 19/2001, Metallic Site Hoardings and Signboards;

· WBTC No. 12/2002, Specifications Facilitating the Use of Recycled Aggregates;

· DEVB TC(W) No. 06/2010, Trip Ticket System for Disposal of Construction and Demolition Materials;

· DEVB TC(W) No. 08/2010, Enhanced Specifications for Site Cleanliness and Tidiness;

· DEVB TC(W) No. 2/2011, Encouraging the Use of Recycled and other Green Materials in Public Works Projects;

· DEVB TC(W) No. 09/2011, Enhanced Control Measures for Management of Public Fill;

· ETWB TC(W) No. 19/2005, Environmental Management on Construction Sites;

· CEDD TC No. 11/2019, Management of Construction and Demolition Materials;

· Project Administration Handbook (PAH) for Civil Engineering Works, Management of Construction/ Demolition Materials including Rocks;

· A Guide to the Chemical Waste Control Scheme (EPD);

· A Guide to the Registration of Chemical Waste Producers (EPD); and

· Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes.

6.3 Assessment Methodology

6.3.1 The methodology for assessing the potential waste management impacts during construction and operation of the Project will include the following tasks:

· Estimation of types, quantity, quality and timing of the wastes generated, which will be the estimates in the Preliminary Design stage and will be subject to further review during the Reference Design and Construction stages;

· Assessment of potential impacts from the management of the waste with respect to potential hazards, air and odour emissions, noise, wastewater discharge and public transport;

· Evaluation of the opportunities for reducing waste generation;

· Identification of disposal options for each type of waste; and

· Assessment of impacts on the capacity of waste collection, transfer and disposal facilities.

Construction Phase

6.3.2 The assessment of waste management implications from handling, storage, collection, transportation and disposal of solid waste materials generated by the construction of Yuen Long Highway Widening will be undertaken in accordance with Annexes 7 and 15 of the EIAO-TM.

6.3.3 The waste management hierarchy, which shows the desirable priority of various waste management methods, will be applied in the assessment and development of mitigation measures for waste as follows:

· Avoidance;

· Minimisation;

· Recycling/reuse;

· Treatment; and

· Disposal.

6.3.4 All opportunities for reducing waste generation will be explored based upon the following factors:

· Avoiding or minimising waste generation throughout design, construction and operation phases (e.g. a balanced cut-and-fill approach is an approach that the amount of excavated materials will be estimated so that the quantity can be similar to the fill materials for backfilling on site. The balanced cut-and-fill approach would be used as much as practicable to aim for no net surplus of fill material to be transported away from the site;

· Adopting better management practices to promote segregation of waste materials;

· Reuse and recycling on-site or other projects; and

· Diverting surplus inert C&D materials to public fills as far as possible.

Operation Phase

6.3.5 The assessment of waste management implications will be undertaken in accordance with Annexes 7 and 15 of the EIAO-TM and Appendix E of the EIA Study Brief No. ESB-356/2022. The waste management hierarchy comprising avoidance, minimisation, recycling/ reuse, treatment and disposal will also be adopted for the assessment.

6.4 Identification of Waste Sources during Construction Phase

6.4.1 The main activities which may potentially result in the generation of waste would include:

· Site Clearance and demolition works of existing temporary structures

· Site formation and Excavation Works

· Superstructure Works

6.4.2 The types of waste generated in the Yuen Long Highway Widening project and their respective sources during the construction phase are anticipated to include:

· Construction and Demolition (C&D) Materials

· Chemical waste

· General refuse

C&D Materials

6.4.3 Vegetation waste will be generated from site clearance. Excavated materials and materials from site preparation and demolition works of existing temporary structures and noise barriers along Yuen Long Highway, including inert C&D materials (e.g. rocks, concrete debris, soft materials such as fill, etc) and non-inert C&D materials (e.g. top soil, vegetation, timber and steel, etc.) will be generated.

Chemical Waste

6.4.4 Materials classified as chemical waste are listed in the Waste Disposal (Chemical Waste) (General) Regulation. The major 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.

6.4.5 Chemical waste will be generated from construction plant operation and maintenance, and maintenance of mechanical equipment, including oil and grease, scrap batteries, used paint and cleaners etc.

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

· Toxic effects to workers;

· Adverse effects on water and land from spills; and

· Fire hazards.

6.4.7 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 in the order of few hundred litres per month.

6.4.8 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 collector and to be disposed of at a licensed chemical waste treatment and disposal facility (CWTC). Wherever possible, opportunities for the reuse and recycling of materials will be taken. Mitigation measures for chemical wastes are detailed in Section 6.10. Provided that the handling, storage and disposal of chemical wastes are in accordance with these requirements, adverse environmental impacts are not expected.

General Refuse

6.4.9 General refuse will be generated from site-based staff and construction workers, including food waste, containers, aluminium cans, plastic bottles and waste papers etc.

6.4.10 The storage of general refuse may give rise to adverse environmental impacts, such as water quality, odour and visual impact; and in the form of windblown litter, if not properly managed. The construction site may also attract pests and vermin if the storage areas are not well maintained and cleaned regularly. In addition, disposal of waste at sites other than the approved disposal facilities could also lead to similar adverse impacts at those sites.

6.4.11 The number of work force (clerical and workers) to be employed for the Project is not available at this stage, but is anticipated not to be over 200 staff. Based on the generation rate of 0.65kg/person/day, the total refuse generated per day would be less than 130kg/day.

6.5 Analysis of Activities and Waste Generation

6.5.1 A summary of estimated amount of C&D materials to be generated by different construction activities and their estimated yearly amount are summarised in Table 6.1 and 6.2.

Table 6.1 Estimated amount of C&D materials to be generated by different construction activities

Activities	Estimated amount of C&D materials to be generated, m^3
	Inert C&D Material			Non-inert C&D Materials
	Soft materials	Rocks	Concrete debris	Top soil	Vegetation	Timber	Steel
YLH-Eastbound
Site Clearance	2600	0	1200	2300		2800	0
Site Formation and Excavation	4000	6000	0	0		0	0
Superstructure Works	0	0	1500	0		0	100
YLH-Westbound
Site Clearance	700	0	600	300		400	0
Site Formation and Excavation	1100	900	0	0		0	0
Superstructure Works	0	0	140	0		0	50
Subtotal	8400	6900	3440	2600		3200	150
Total	18,740			5,950

Table 6.2 Summary of yearly amount of C&D materials to be generated

C&D materials		Estimated amount of C&D materials to be generated, m^3
Year		2028	2029	2030	2031	2032	Total
Inert C&D Material	Soft materials	3300	4000	1100	0	0	8400
	Rocks	0	6000	900	0	0	6900
	Concrete debris	1200	600	0	1500	140	3440
Non-inert C&D Materials	Top soil & Vegetation	2300	300	0	0	0	2600
	Timber	2800	400	0	0	0	3200
	Steel	0	0	50	50	50	150

6.6 Proposal for Waste Management

6.6.1 Prior to considering the disposal options for various types of wastes, opportunities for reducing waste generated, on-site or off-site re-use and recycling will be evaluated. Measures which can be taken in the design phase (e.g. by balanced cut-and-fill approach) and in the construction phase (eg. reuse of steel component / panels from the existing noise barriers and maximising waste reduction) will be considered.

6.6.2 It is estimated that the amount of inert C&D to be generated by the Project would be 18,740m³. The inert C&D materials would be considered for re-use on-site as fill materials based on a balanced cut-and-fill approach as much as practicable to aim for no net surplus of fill materials to be transported away from the site.

6.6.3 After considering all the opportunities for reducing waste generation and maximising re-use, the types and quantities of the remaining wastes required to be disposed of will be estimated and the disposal options for each type of wastes will be described. The disposal method recommended for each type of wastes will be taken into account the result of this assessment.

6.6.4 The wastes handling (including labelling, packaging and storage), collection, transportation, and reuse/disposal of waste will be addressed and appropriate mitigation measures will be proposed.

6.7 Transportation Arrangement for Waste Disposal during Construction Phase

6.7.1 Land transport should be used to deliver and dispose of the waste generated from the Project to the designated disposal outlets. It is expected that a maximum of 1 vehicles per hour per day will be required to transport the generated waste during the construction phase. No barging point or conveyor system will be used. Temporary stockpiling area would be located near to the excavation area within the Project Works Boundary. The tentative transportation routings for the disposal of various types of wastes generated during the construction phase are listed below. The transportation routings may change subject to the actual traffic conditions of the roads. Nevertheless, with the implementation of appropriate mitigation measures (e.g. using water-tight containers and covered trucks), no adverse environmental impacts are expected due to the transportation of waste.

Table 6.3 Tentative Transportation Routings for Waste Disposal during Construction Phase

Waste Type	Disposal Outlet	Frequency of trucks/ vessels involved	Tentative Transportation Routing
Inert C&D Materials	On-site reuse/ Public Fill Reception Facility (e.g. TM38 Fill Bank)	Maximum 3 vehicles per day as peak^#	Via Yuen Long Highway, Tuen Mun Road, Wong Chu Road, Lung Fu Road and Lung Mun Road
Non-inert C&D Materials, General Refuse	WENT Landfill	Maximum 2 vehicles per day as peak^#	Via road network within Yuen Long South development, Yuen Long Highway, Tuen Mun Road, Wong Chu Road, Lung Fu Road, Lung Mun Road, Lung Kwu Tan Road and Nim Wan Road
Chemical Waste	CWTC	Approx. 1 trip every 2 months	Via road network within Yuen Long South development, Yuen Long Highway, Tuen Mun Road, Tsing Long Highway, Tsing Sha Highway and Tsing Yi Road

Note #: Dump truck is approximately 6 to 8 m³ capacities. Take 5 m³ each truck considering bulk density. Assume peak dumping takes place at first 3 years and 15 days with disposal per month.
Total disposal for inert C&D material = 6900m³, total trips = 6900m³ / 5m³ / (3yrs x 12mths x 15 days) ≈ 3 per day.
Total disposal for non C&D material = 5950 m³, total trips = 5950m³ / 5m³ / (3yrs x 12mths x 15 days) ≈ 2 per day

6.8 Construction Phase Waste Summary

6.8.1 A summary of the construction waste arising from the works area with recommendation for outlets during construction phase is presented in Table 6.4.

Table 6.4 Summary of waste arising from the works area with recommendation for outlet during construction phase

Waste Type		Total Amount to be generated, m^3	Handling Method/Reuse	On-site reuse, m^3	Total Disposal, m^3	Disposal Outlets
Inert C&D Material	Soft materials	8400	Reusable materials should be separated and reused as far as practicable	8400	0	Reuse within the site
	Rocks	6900		0	6900	To be delivered to Tuen Mun Area 38 Fill Bank
	Concrete debris	3440		3440	0	Reuse within the site
Non-inert C&D Materials	Top soil & Vegetation	2600	Segregation from inert C&D materials during stockpiling Reusable materials should be separated and recycled as far as practicable	0	2600	To be delivered to WENT Landfill
	Timber	3200		0	3200	To be delivered to WENT Landfill
	Steel	150		0	150	To be collected by recycler
Chemical Waste		Few hundred litres per month	Store in compatible containers in designated area on site To be collected and recycled by licensed collector	Few hundred litres per month	Few hundred litres per month	Recycled by licensed facility as far as possible, the remaining are to be collected by a licensed collector and to be disposed of at Chemical Waste Treatment Centre (CWTC) in Tsing Yi
General Refuse		130kg/day	Provide on-site collection points together with recycling bins To be collected by reputable waste collectors	0	130kg/day	To be delivered to WENT Landfill

Note:

1. The amount of chemical waste will be dependent on the contractor’s on-site maintenance programme and the number of equipment and vehicles used on-site. Chemical waste should be collected by licensed contractor and properly disposed of at approved chemical waste treatment facilities.  Chemical waste will be generated throughout the construction period.

2. Suitable soft materials should be re-used for on-site backfilling.

3. The amount of general refuse will dependent on the contractor’s operating procedures and housekeeping practices as well as the size of the workforce on-site. All such wastes should be sorted, reused and recycled before disposal at designated outlets. General refuse will be generated throughout the construction period.

4. All C&D waste should be sorted, reused and recycled as far as possible before disposal at designated landfill.

6.9 Identification of Waste Sources during Operation Phase

6.9.1 Upon Project operation, it is anticipated that major source of wastes would only be from roadside littering. Types of waste to be generated include:

· General waste: Maintenance activities of the widened Yuen Long Highway, including scrap materials like metals etc.

· Chemical waste: Spent solvent and lubricants from maintenance activities.

6.10 Mitigation Measures for construction phase

6.10.1 The mitigation measures for construction phase are recommended based on the waste management hierarchy principles. Recommendations of good site practices, waste reduction measures as well as the waste transportation, storage and collection are described in following sub-sections.

Good Site Practice

6.10.2 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 trucks or by transporting wastes in enclosed containers;

· regular cleaning and maintenance programme for drainage systems, sumps and oil interceptors;

· a Waste Management Plan (WMP) should be prepared by the contractor and submitted to the Engineer for approval.

Waste Reduction Measures

6.10.3 Amount of waste generation can be significant 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.

6.10.4 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

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

· waste such as soil should be handled and stored well to ensure secure containment;

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

· different locations should be designated to stockpile each material to enhance reuse.

6.10.6 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 trucks and vessels with cover or enclosed containers for waste transportation;

· obtain relevant waste disposal permits from the appropriate authorities; including Chemical Waste Permits / licenses under the Waste Disposal Ordinance (Cap 354), Water Pollution Control Ordinance (Cap 358), Public Dumping Licence under the Land (Miscellaneous Provisions) Ordinance (Cap 28), Effluent Discharge Licence under the Water Pollution Control Ordinance, and

· disposal of waste should be done at licensed waste disposal facilities.

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

C&D Materials

6.10.8 Careful design, planning together with good site management can reduce over-ordering and generation of C&D materials such as concrete, mortar and cement grouts. Formwork should be designed to maximize the use of standard wooden panels, so that high reuse levels can be achieved. Alternatives such as steel formwork or plastic facing should be considered to increase the potential for reuse.

6.10.9 In order to minimize the impacts resulting from collection and transportation of C&D materials for off-site disposal, the excavated materials arising from excavation works should be reused on-site as backfilling materials and for landscaping works as far as practicable. Other mitigation requirements are listed below:

· A WMP, which becomes part of the EMP, should be prepared in accordance with ETWB TCW No.19/2005;

· A recording system for the amount of wastes generated, recycled and disposed (including the disposal sites) should be adopted for easy tracking; and

· In order to monitor the disposal of C&D materials at public filling facilities and landfills and to control fly-tipping, a trip-ticket system should be adopted (refer to DEVB TCW No. 06/2010). In addition, all dump trucks should be equipped with GPS or equivalent system for monitoring of their transportation routes and parking locations to prohibit illegal dumping and landfilling of C&D materials.

6.10.10 The Contactor should prepare and implement an EMP in accordance with ETWB TCW No. 19/2005, which describes the arrangements for avoidance, reuse, recovery, recycling, storage, collection, treatment and disposal of different categories of waste to be generated from construction activities. Such a management plan should incorporate site-specific factors, such as the designation of areas for segregation and temporary storage of reusable and recyclable materials. The EMP should be submitted to the Engineer for approval. The Contractor should implement waste management practices in the EMP throughout the construction stage of the Project. The EMP should be reviewed regularly and updated by the Contractor, preferably on a monthly basis.

6.10.11 All surplus C&D materials arising from or in connection with construction works should become the property of the Contractor when it is removed unless otherwise stated. The Contractor would be responsible for devising a system to work for on-site sorting of C&D materials and promptly removing all sorted and process materials arising from the construction activities to minimize temporary stockpiling on-site. The system should be included in the EMP identifying the source of generation, estimated quantity, arrangement for on-site sorting, collection, temporary storage areas and frequency of collection by recycling Contractors or frequency of removal off-site. A Construction and Demolition Material Management Plan (C&DMMP) should be prepared and submitted together with EIA Report for PFC’s approval as required under Section 4.1.3 of the PAH.

Chemical Waste

6.10.12 If chemical wastes are produced at the construction site, the Contractor during construction or the operator during operation will be required to register with EPD as a chemical waste producer and to follow the guidelines stated in the Code of Practice on the Packaging, Labelling and Storage of Chemical Wastes. Suitable containers compatible with the chemical wastes should be used, and incompatible chemicals should be stored separately. Appropriate labels should be securely attached on each chemical waste container indicating the corresponding chemical characteristics of the chemical waste, such as explosive, flammable, oxidizing, irritant, toxic, harmful, corrosive, etc. The Contractor shall employ a licensed collector to transport and dispose of the chemical wastes, to the licensed CWTC, or other licensed facilities, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.

General Refuse

6.10.13 Recycling of wastepaper, aluminium cans and plastic bottles should be encouraged, it is recommended to place clearly labelled recycling bins at designated locations with convenient access. Other general refuse should be separated from chemical and C&D materials by providing separated bins or skips for storage to maximize the recyclable volume. A reputable licensed waste collector should be employed to remove general refuse on a daily basis to minimize odour, pest and litter impacts.

6.11 Mitigation Measures for operational phase

6.11.1 The following measures should be implemented to minimise the amount of waste to be disposed of at landfill and to maximise the recovery of material during operational phase.

Chemical Waste

6.11.2 The proposed mitigation measures for operation phase are the same as the construction phase. The operators of various industrial uses should register with EPD as chemical waste producers. Chemical wastes should be stored in appropriate containers and collected by a licensed chemical waste contractor. Chemical wastes (e.g. spent lubricant oil) should be recycled at an appropriate facility as far as possible, while the chemical waste that cannot be recycled should be disposed of at either the Chemical Waste Treatment Centre, or another licensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation.

General Refuse

6.11.3 Adequate number of rubbish bins should be provided to collect the roadside littering and frequent clearing of bins should be arranged by Food and Environmental Hygiene Department (FEHD). Scrap metal from maintenance of widened Yuen Long Highway will be collected and recycled at licensed metal recycling collectors.

6.12 Residual Waste Management Implications

6.12.1 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 both the construction and operation phases.

6.13 Environmental Monitoring and Audit

6.13.1 It is the Contractor’s responsibility to ensure that all wastes produced during the construction phase of the Project are handled, stored and disposed of in accordance with the recommended good waste management practices and relevant legislation and waste management guidelines.

6.13.2 It is recommended that the waste arisings generated during the construction activities should be audited regularly by the Environmental Team (ET) to determine if wastes are being managed in accordance with approved procedures. The audits should look at all aspects of on-site waste management practices including waste generation, storage, recycling, transport and disposal. Apart from site inspections, documents including licences, permits, disposal and recycling records should be reviewed and audited for compliance with the legislation and Contract requirements. In addition, the routine site inspections should check the implementation of the recommended good site practices and other waste management mitigation measures.

6.13.3 A WMP, as part of the EMP should be prepared in accordance with ETWB TC(W) No. 19/2005 and submitted to the Engineer, i.e. Resident Engineer appointed by the Employer to oversee the construction works in accordance with the specification and contractual requirement for approval. The recommended mitigation measures should form the basis of the WMP. The monitoring and auditing requirement stated in ETWB TC(W) No. 19/2005 should be followed with regard to the management of C&D materials.

6.14 Conclusion and Recommendations

Construction Phase

6.14.1 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. Recommendations have been made for implementation by the Contractor during the construction period to minimise waste generation and off-site disposal.

Operation Phase

6.14.2 It is expected that there would be limited quantities of general refuse to be generated from the operation of the Project and will be properly handled by FEHD or relevant department. Small amount of chemical waste will be generated during operation and routine maintenance of the Project. No unacceptable environmental impacts are anticipated with proper waste management practices. Waste monitoring and audit programme for the operation phase of the Project would not be required.