Agreement No. CE 35/2006(CE)
Kai Tak Development Engineering Study
cum Design and Construction of Advance Works
– Investigation, Design and Construction
Decommissioning of the
other than the north
apron
environmental monitoring
and audit manual
Contents
3............ Waste Management Implications
3.2 Waste Control and Mitigation
Measures
List of Tables
Table 3.1.......... Summary
of Waste Handling Procedures and Disposal Routes
List of Appendices
Appendix
A Implementation
Schedule of the Recommended Mitigation Measures
3.1.1
Waste
management will be the Contractor’s responsibility to ensure that all wastes
produced during the decommissioning works of the Project are handled, stored
and disposed of in accordance with good waste management practices and EPD’s
regulations and requirements.
3.1.2
Waste
materials generated during the decommissioning works, such as construction and
demolition (C&D) material, general refuse and chemical wastes, 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 will ensure that these solid and liquid wastes are
not disposed into the nearby harbour waters. The Contractor will be responsible for
the implementation of any mitigation measures to minimise waste or redress
problems arising from the waste materials.
3.2
Waste Control and Mitigation Measures
3.2.1
Mitigation
measures for waste management are summarised below. With the appropriate handling, storage
and removal of waste arisings during the decommissioning works as defined
below, the potential to cause adverse environmental impacts will be minimised.
Good Site Practices
3.2.2
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 decommissioning works
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 waste handling procedures;
·
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 recording system for the amount of wastes generated,
recycled and disposed of (including the disposal sites).
Waste Reduction Measures
3.2.3
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:
·
Sorting C&D waste from demolition of the remaining
structures to recover recyclable portions such as metals;
·
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;
·
Encouraging collection of aluminium cans, PET bottles
and paper by providing separate labelled bins to enable these wastes to be
segregated from other general refuse generated by the work force;
·
Recycling any unused chemicals or those with remaining
functional capacity;
·
Proper storage and site practices to minimise the
potential for damage or contamination of construction materials;
·
Planning and stocking construction materials carefully
to minimise amount of waste generated and avoid unnecessary generation of
waste.
3.2.4
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.
Construction and Demolition Material
3.2.5
The
C&D material should be sorted on-site into inert C&D material (that is,
public fill) and C&D waste. The
inert C&D material would require disposal to the designated public fill
reception facility. C&D waste,
such as steel and other metals should be re-used or recycled and, as a last
resort, disposed of to landfill. It
is recommended that a suitable area be designated to facilitate the sorting
process and a temporary stockpiling area will be required for the separated
materials.
3.2.6
In
order to monitor the disposal of public fill and C&D waste at public
filling facilities and landfills, respectively, and to control fly tipping, a
trip-ticket system should be included as one of the contractual requirements
and implemented by an Environmental Team undertaking the Environmental
Monitoring and Audit work. An
Independent Environmental Checker should be responsible for auditing the
results of the system.
General Refuse
3.2.7
General
refuse should be stored in enclosed bins or compaction units separate from
C&D material. A licensed waste
collector should be employed by the Contractor to remove general refuse from
the site, separately from C&D material. Effective collection and storage methods
(including enclosed and covered area) of site wastes would be required to
prevent waste materials from being blown around by wind, wastewater discharge
by flushing or leaching into the marine environment, or creating odour nuisance
or pest and vermin problem.
Chemical Wastes
3.2.8
After
use, chemical wastes (for example, cleaning fluids, solvents, lubrication oil
and fuel) should be handled according to the Code of Practice on the
Packaging, Labelling and Storage of Chemical Wastes. Spent chemicals should be collected by a
licensed collector for disposal at the CWTF or other licensed facility, in
accordance with the Waste Disposal (Chemical Waste) (General) Regulation.
3.2.9
Table 3.1 provides a summary of the various waste types likely to be generated
during the decommissioning works, together with the recommended handling and
disposal methods.
Table 3.1 Summaryof
Waste Handling Procedures and Disposal Routes
|
Waste Type |
Generated From Works
Item |
Total Quantity Generated |
Quantity to be disposed
off-site / re-used |
Handling |
Disposal |
|
C&D Material |
Demolition
of Remaining Structures |
|
(no reuse is considered feasible) |
Sort on-site into:
|
To be disposed to public fill reception facilities
for other beneficial uses To be disposed to landfill |
|
Chemical Wastes |
Lubrication
oil, fuel etc. from operation, maintenance, and servicing of construction and
decontamination treatment plant and equipment, and from decontamination works |
Few
cubic metres per month (preliminary estimate) |
Few
cubic metres per month (preliminary estimate) |
Recycle
on-site or by licensed companies Stored
on-site within suitably designed containers |
Chemical
Waste Treatment Facility or other licensed facility |
|
General Refuse |
Waste
paper, discarded containers etc. generated from workforce |
Few
cubic metres per month (preliminary estimate) |
Few
cubic metres per month (preliminary estimate) |
Provide
on-site refuse collection points |
Refuse
station for compaction and containerisation and then to landfill |
3.2.10
The
implementation schedule of the recommended mitigation measures is presented in Appendix A.