3.1
As identified in the EIA report, the proposed
Project would not result in an adverse construction noise impact on sensitive
receivers located in the vicinity of the Project site in view of a large
separation distance and limited line of sight to the Project site. Therefore,
no noise monitoring would be required during construction of the Project.
3.2
Environmental audit shall be carried out
throughout the construction phase to ensure that appropriate noise control
measures would be properly implemented with a view to minimizing the
construction noise impact.
3.3
Weekly site inspections should be carried out in
order to ensure the noise control measures are implemented properly. Detailed
requirements of site inspection are presented in Section 7 of this EM&A
Manual. The Contractor shall be responsible for implementation of the good site
practices recommended in the EIA Report.
A number of practical measures listed below should be followed during
construction phase:
·
Only well-maintained plant should be operated on-site and
plant should be serviced regularly during the construction program;
·
Silencers or mufflers on construction equipment should be
utilized and should be properly maintained during the construction program;
·
Mobile plant, if any, should be sited as far from NSRs as possible;
·
Machines and plant (such as trucks) that may be in
intermittent use should be shut down between work periods or should be
throttled down to a minimum;
·
Plant known to emit noise strongly in one direction should,
wherever possible, be orientated so that the noise is directed away from the
nearby NSRs; and
·
Material stockpiles and other structures should be
effectively utilised, wherever practicable, in screening noise from on-site
construction activities.
3.4
Upon receipt of an environmental complaint, or
as part of the environmental audit, the Contractor shall liaise with the ET on
some other mitigation measures, propose to ER for approval, and implement the
mitigation measures.
3.5
It has
been concluded in the EIA Report
that the operation of proposed fixed plants would not cause adverse operation
noise impact at the NSRs in vicinity of the
Project Site, and would satisfy the
requirements of the IND-TM. Thus, mitigation measures would not be required.
3.6
Although no adverse noise impact would be
expected during the operation phase of the Project, it is recommended that the
following noise reduction measures should be considered as far as practicable
during detailed design:
·
Choose quieter plants such as those which have been
effectively silenced.
·
Include noise levels specification when ordering new
plants.
·
Locate fixed plants away from any NSRs as far as practicable.
·
Locate fixed plants in plant rooms with thick walls
or specially designed enclosure
·
Locate noisy machines in basement or a completely
separate building
·
Develop
and implement a regularly scheduled plant maintenance programme so that plants
are properly operated and serviced in order to maintain controlled level of
noise. The programme should be implemented by properly trained personnel.
3.7
The implementation schedule for the recommended noise mitigation measures is
presented in Appendix B.