5.                       WASTE MANAGEMENT




5.1               Waste management will be the contractor’s responsibility to ensure that all waste produced during the construction works for the Project are handled, stored and disposed of in accordance with good waste management’s practices and EPD’s regulations and requirements. The recommended mitigation measures should form the basis of the site Waste Management Plan (WMP) to be developed by the Contractor during construction period.


5.2               Waste materials generated during construction and demolition activities, such as construction and demolition (C&D) materials and general refuse, are recommended to be audited at regular intervals (at least quarterly) to ensure that proper storage, transportation and disposal practices are being implemented. This monitoring of waste management practices would ensure that these solid wastes generated during construction are not disposed into the nearby waters. The Contractor would be responsible for the implementation of any mitigation measures to minimize waste or redress problems arising from the waste materials. A WMP should be prepared in accordance with ETWB TCW No. 19/2005 and submitted for approval. The monitoring and auditing requirements of the WMP as detailed in ETWB TCW No. 19/2005 should be followed with regard to the management of C&D material.


Mitigation Measures


5.3               Mitigation measures for waste management are summarized below. With the appropriate handling, storage and removal of waste arisings during the construction works as defined below, the potential to cause adverse environmental impacts would be minimized. During the site inspections, the ET shall pay special attention to the issues relating to waste management and check whether the Contractor has implemented the recommended good site practices and other mitigation measures.


Good Site Practices


5.4               Adverse impacts related to waste management would not be expected during the construction of the Atrium Link Extension, provided that good site practices are strictly followed. Recommendations for good site practices during the construction activities include:


·         Nomination of an approved person, such as a site manager, to be responsible for 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 proper waste management and chemical handling procedures

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

·         Appropriate measures to minimize 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.


Waste Reduction Measures


5.5               Good management and control can prevent the generation of a significant amount of waste both on site and off-site. Waste reduction is best achieved at the planning and design stage, as well as by ensuring the implementation of good site practices. Recommendations to achieve waste reduction include:


·         Sorting of demolition debris and excavated materials from demolition works to recover reusable/ recyclable portions (ie soil, broken concrete, metal, etc)

·         Segregation and storage of different types of waste in different containers, skips or stockpiles to enhance reuse or recycling of materials and their proper disposal

·         Encourage collection of aluminum cans by individual collectors by providing separate labeled bins to enable this waste to be segregated from other general refuse generated by the work force

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

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


5.6               In addition to the above measures, specific mitigation measures are recommended below for the identified waste arising to minimize environmental impacts during handling, transportation and disposal of these wastes.


General Refuse


5.7               General refuse should be stored in enclosed bins or compaction units separate from C&D material. A reputable waste collector should be employed by the contractor to remove general refuse from the site, separately from C&D material. Preferably an enclosed and covered area should be provided to reduce the occurrence of ‘wind blown’ light material.


Construction and Demolition Material


5.8               In order to minimize the impact resulting from collection and transportation of C&D material for off-site disposal, the C&D material from the following construction activities should be re-used and recycled as far as possible to reduce the net amount of C&D material generated from the Project.


5.9               The large amount of C&D waste generated is mainly due to the piling works of large diameter piles’ excavation at the sea front site. If however marine sediment is found during pile excavation, the handling and disposal of such wastes will be managed in accordance with the requirements of the DASO and the current ETWB Tech. Circular no. 34/2002.


5.10            Other mitigation requirements are listed below:


·         A Waste Management Plan 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 proposed

·         In order to monitor the disposal of C&D and solid wastes at public filling facilities and landfills and to control fly-tipping, a trip-ticket system should be included. One may make reference to ETWB TCW No.31/2004 for details.


Chemical Waste


5.11            If chemical wastes are produced at the construction site, the Contractor would be required to register with the 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. Good quality 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 explosives, flammable, oxidizing, irritant, toxic, harmful, corrosive, etc. The Contractor shall use a licensed collector to transport and dispose of the chemical wastes, to either the Chemical Waste Treatment Centre at Tsing Yi, or another licensed facility, in accordance with the Waste Disposal (Chemical Waste) (General) Regulation. For this Project, the amount of chemical wastes produced would be small.


5.12            The implementation schedule for the recommended waste management mitigation measures is presented in Appendix B.