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EIA Ref #
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Environmental Protection Measures/Mitigation Measures
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Location/ Timing
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Implementation Agent
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Implementation Stages*
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Relevant Legislation and Guidelines
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Des
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C
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O
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Dec
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S6.5.2 – S6.5.3
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Good Site Practices
Good site practices during
the construction activities include:
·
Nomination of approved personnel, such as a
site manager, to be responsible for good site practices and making
arrangements for collection of all wastes generated at the site and effective
disposal to an appropriate facility.
·
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 (including the disposal sites) shall be proposed.
·
A Waste Management Plan shall be prepared and
submitted to the Engineer for approval. One may make reference to ETWB TCW
No. 15/2003 for details.
·
In order to monitor the disposal of C&D
materials at landfills and public filling areas, and to control fly tipping,
a trip-ticket system shall be included as one of the contractual
requirements. One may make reference to WBTC No. 21/2002 for details.
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Work site / During the construction
period
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Contractor
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Ö
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S6.5.4
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Waste Reduction
Measures
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.
·
Separate labelled bins shall be provided to
segregate aluminium cans from other general refuse generated by the
workforce, and to encourage collection of by individual collectors.
·
Any unused chemicals or those with remaining
functional capacity shall be recycled.
·
Maximising the use of reusable steel formwork
to reduce the amount of C&D material.
·
Prior to disposal of C&D waste, it is
recommended that wood, steel and other metals shall be separated for re-use
and / or recycling to minimise the quantity of waste to be disposed of to
landfill.
·
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.
·
Minimize over ordering of concrete, mortars
and cement grout by doing careful check before ordering.
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Work site / During
planning & design stage, and construction stage
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Contractor
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Ö
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Ö
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WBTC No.4/98, ETWB TCW No. 15/2003
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S6.5.6 – S6.5.8
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Construction
& Demolition (C&D) Material
C&D
material generated from the river improvement works with suitable
characteristics shall be reused on-site as fill material as far as practicable,
such as for backfilling of box culverts and drainage pipes, and small cobbles
and rocks shall be used in the construction of the recreated channel
bed.
When disposing C&D material at a public filling
area, it shall be noted that the material shall only consist of soil, rock,
concrete, brick, cement plaster/mortar, inert building debris, aggregates and
asphalt. The material shall be free
from marine mud, household refuse, plastic, metals, industrial and chemical
waste, animal and vegetable matter, and other material considered to be
unsuitable by the Filling Supervisor.
C&D
material generated from demolition of existing structures and river crossings
shall be sorted on-site into public fill and C&D waste. Suitable areas shall be designated within
the works site boundaries for temporary stockpiling of C&D material. Within stockpile areas, the following
measures shall be taken to control potential environmental impacts or
nuisance:
- covering material during heavy rainfall;
- locating stockpiles to minimse potential visual impacts; and
- minimizing land intake of stockpile areas as far as possible.
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Work site / During the
construction period
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Contractor
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Ö
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WBTC No. 4/98, 21/2002, 25/99, 12/2000
ETWB TCW No. 15/2003, 33/2002
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S6.5.9
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Excavated Riverbed Material
Use of
water-tight trucks for the transportation of excavated riverbed material to
the designated barging point for disposal at the designated public filling
area, or transported directly to the public filling area.
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Work site / During the
construction period
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Contractor
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Ö
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S6.5.10
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Chemical Waste
If chemical
wastes are produced at the construction site, the Contractor shall register with
the EPD as a Chemical Waste Producer and 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 shall be used,
and incompatible chemicals shall be stored separately. Appropriate labels shall 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 generated at the
Chemical Waste Treatment Centre at Tsing Yi, or other licenced facility, in
accordance with the Waste Disposal (Chemical Waste) (General) Regulation.
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Work site / During the
construction period
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Contractor
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Ö
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Waste Disposal (Chemical Waste) (General) Regulation
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S6.5.11
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General Refuse
General refuse
shall be stored in enclosed bins or compaction units separate from C&D
material. A reputable waste collector
shall be employed by the contractor to remove general refuse from the site,
separately from C&D material. An
enclosed and covered area is preferred to reduce the occurrence of 'wind
blown' light material.
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Work site / During the
construction period
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Contractor
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Ö
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Public Health and Municipal Services Ordinance (Cap. 132)
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