5.1
Waste management would be the
contractor’s responsibility to ensure that all wastes produced during the
construction phase are handled, stored and disposed of in accordance with good
waste management practices and EPD’s regulations and requirements.
5.2
Waste materials generated
during construction 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.
The Contractor would be responsible for the implementation of any
mitigation measures to minimise waste or redress problems arising from the
waste materials.
5.3
Mitigation measures for waste
management as recommended in the EIA Report are summarised below. With the appropriate handling, storage
and disposal of waste arisings during the construction works as defined below, the
potential to cause adverse environmental impacts would be minimised.
5.4
The implementation schedule of
the recommended mitigation measures is presented in Appendix A. 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.
5.5
Adverse impacts related to
waste management are not expected to arise, 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 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.
§
Separation
of chemical wastes for special handling and appropriate treatment at the
Chemical Waste Treatment Facility.
5.6
Good management and control can
prevent the generation of a significant amount of waste. 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:
§
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 aluminium cans by providing separate labelled bins to enable this
waste to be segregated from other general refuse generated by the workforce
§
Proper
storage and site practices to minimise the potential for damage or
contamination of construction materials
§
Plan
and stock construction materials carefully to minimise amount of waste
generated and avoid unnecessary generation of waste.
§
A
recording system for the amount of wastes generated, recycled and disposed
(including disposal sites) should be proposed.
§
Training
should be provided to workers about the concepts of site cleanliness and
appropriate waste management procedures, including waste reduction, reuse and
recycle.
5.7
In addition to the above
measures, specific mitigation measures are recommended below for the identified
waste arisings to minimise environmental impacts during handling,
transportation and disposal of these wastes.
5.8
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
5.9
In order to minimise impacts
resulting from collection and transportation of C&D material for off-site
disposal, the excavated material from the foundation construction of TM54SPS should
be reused on-site as fill material as far as possible for general filling under
the Phase 2 works for the Formation, Roads and Drains in Tuen Mun Area 54. The surplus excavated material should be
disposed of at the designated public fill reception facility, as agreed with
the Secretary of the Public Fill Committee, for other beneficial uses. C&D waste generated from site clearance
and dismantling of formwork would require disposal to the designated landfill
site. In order to monitor the
disposal of C&D material at the public fill reception facility and landfill
and to control fly-tipping, a trip-ticket system should be included. One may make reference to ETWB TCW No. 31/2004
for details.
5.10
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 explosive, 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 approved Chemical Waste Treatment Centre, or another licensed
facility, in accordance with the Waste Disposal (Chemical Waste) (General)
Regulation.