Ÿ
General site
wastes;
Ÿ
Workforce wastes;
Ÿ
Chemical wastes
(e.g. vehicle and plant maintenance / servicing); and
Ÿ
Construction and
demolition materials.
Ÿ
Nomination of an
approved person, such as a site manager, to be responsible for implementation
of good site practices, arranging for collection and effective disposal to an
appropriate facility, of all wastes generated at the site;
Ÿ
Training (proper
waste management and chemical handling procedure) should be provided for site
staffs;
Ÿ
Where possible,
materials should be reused and recycled;
Ÿ
Plan and stock
construction materials carefully to minimise and avoid unnecessary generation
of waste;
Ÿ
Waste points
should be provided sufficiently and waste should be collected regularly;
Ÿ
Enclosed
collection point for storage and containment should be provided;
Ÿ
Chemical wastes
should be separated for special handling and appropriate treatment at the
Chemical Waste Treatment Facility;
Ÿ
Drainage systems,
sumps and oil interceptor should be cleaned and maintained regularly;
Ÿ Develop procedures such as a ticketing system to facilitate tracking of loads and to ensure that illegal disposal of waste does not occur; and
Ÿ Maintain records of the quantities of wastes generated, recycled and disposed.
General Site
Wastes
Ÿ
Collection area
for construction site waste should be provided where waste can be stored prior
to removal from site;
Ÿ
An enclosed and
covered area for the collection of the waste is recommended to reduce ‘wind
blow’ of light material; and
Ÿ
An open area used
for storage or loading/unloading of wastes should be bunded and all the
polluted surface run-off collected within this area should be treated and
discharged into drainage system.
Workforce Wastes
Ÿ
Suitable
collection sites around site offices and canteen should be required; and
Ÿ
Waste should be
removed daily or as often as required.
Chemical Waste
Ÿ
The Contractor is
required to register with EPD as a chemical waste producer if chemical waste is
produced, in accordance with the Chemical Waste (General) Regulation;
Ÿ
After use,
chemical waste should be handled according to the Code of Practice on the
Package, Labeling and Storage of Chemical Wastes;
Ÿ
Any unused
chemicals or those with remaining functional capacity should be recycled;
Ÿ
Waste should be
properly stored on site within suitably designed containers and should be
collected by an approved licensed waste collector for disposal at the Chemical
Waste Treatment Centre (CWTC) or other licenced facility in accordance with the
Chemical Waste (General) Regulation;
Ÿ
Any service shop
and minor maintenance facilities should be located on hard standing within a
bunded area, and sumps and oil interceptors should be provided.
Ÿ
Maintenance of
vehicles and equipment involving activities with potential for leakage and
spillage should be undertaken within the designated areas equipped to control
these discharges.
Construction and
Demolition MaterialS
Ÿ
Construction and
demolition (C&D) materials should be sorted on site into C&D waste i.e.
the non-inert portion, and public fill i.e. the inert portion, the former
should be disposed to the strategic landfills while the latter should be
disposed of to a public filling facility;
Ÿ
Where possible,
inert material should be re-used on-site (e.g. excavated material should be
re-used on-site as fill materials for site formation and construction of road
embankment);
Ÿ
Where
practicable, wood, glass, plastic, steel and other metals should be separated
for re-use and/or recycling prior to disposal of C&D waste; and
Ÿ
Where practicable,
public fill should be used instead of imported general fill for earthfilling
related activities. The imported public
fill should be obtained off-site from other public fill stockpile areas if
available and as advised by relevant authorities.
Ÿ
The use of suitable recycled C&D materials in the
road formation contract should be considered at the detailed design stage if
recycling facilities/sources are available (in accordance with WBTC No. 31/2000, ‘Specification Allowing
the Use of Recycled Inert Construction and Demolition Material.’)
Ÿ In order to monitor the disposal of C&D waste at landfills 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 EM&A work. An Independent Environmental Checker should be responsible for auditing the results of the system.
C&D
material from road d10 foundation construction adjacent to area 77
Ÿ
Trial pits should
be dug during construction of the piers for Road D10 to ensure that there is no
waste material at the piling foundation; and
Ÿ
Excavated
material from foundation construction should be considered as contaminated
material (due to potential contamination by leachate seepage from TKO Stage 1
landfill) and disposed off-site to existing operating landfill. As excavated material is likely to be of
high moisture content, dewatering may be required before disposal of the
material to landfill (so as to meet the permitted waste type requirements on
water content). Marine mud excavated
from the bored pile foundation works for Road D10 will require marine disposal
in order to conserve landfill void space.
Ÿ
Chemical Waste
Permit or Licences under the Water Disposal Ordinance (Cap 354);
Ÿ
Nuisance control
from solid waste refer to Public Health and Municipal Services Ordinance (Cap
132);
Ÿ
Requirements for
environmental permits for various kinds of projects under Environmental Impact
Assessment Ordinance;
Ÿ
Dumping policy of
construction and demolition (C&D) material refer to Works Branch Technical
Circular No. 2/93, Public Dumps;
Ÿ
Storage, handling
and disposal of chemical waste refer to the Code of Practice on the Package,
Labeling and Storage of Chemical Wastes published by EPD