Table 2.1 Noise Monitoring Stations during Operation Phase
Identification
No. |
Noise
Monitoring Location |
KC |
The Bauhinia (Korea Centre) |
KO |
Ka On Building |
TT |
Talon
Tower |
·
Monitoring
at sensitive receivers close to the major site activities which are likely to
have noise impacts;
·
Monitoring at the noise
sensitive receivers as defined in the Technical Memorandum;
·
Assurance of minimal
disturbance to the occupants during monitoring.
·
one set of measurements for a flight event (including
Approach, Hovering, Idling and Take Off) between 0700 and 1900 hours on normal
weekdays; and
·
one set of measurement of Leq(4hrs) during 1900 and
2300 hours on normal weekdays.
Table 2.2 Action
and Limit Levels for Helicopter Noise
Time Period |
Action Level |
Limit Level |
0700 – 1900 hours |
When one documented complaint is received |
Lmax 85
dB(A) for residential dwellings |
1900 – 2300 hours |
When one documented complaint is received |
(i) Leq (4hrs)
65 dB(A) for residential dwellings & (ii) Compliance
with flight schedule as stated in Appendix DNon-compliance would be recorded
for the operation violate both conditions |
Table 2.3 Event / Action Plan for Helicopter Noise
EVENT |
ACTION |
|||
|
ET |
IC(E) |
CAD |
Heliport
/ Helicopter Operator |
Action Level |
1.
Notify IC(E), CAD and
Heliport / Helicopter Operator; 2.
Carry out
investigation; 3.
Report the results of
investigation to the IC(E), CAD and the Heliport / Helicopter Operator; 4.
Discuss with the
Heliport / Helicopter Operator and formulate remedial measures; 5.
Increase monitoring
frequency to check mitigation effectiveness. |
1.
Review
the analysed results submitted by the ET; 2. Review the proposed remedial
measures by the Heliport / Helicopter Operator and advise the ER accordingly; 3. Supervise the implementation of remedial
measures. |
1. Confirm
receipt of notification of failure in writing; 2. Notify
Contractor; 3. Require
Heliport / Helicopter Operator to
propose remedial measures for the analysed noise problem; 4. Ensure
remedial measures are properly implemented. |
1. Submit
noise mitigation proposals to IC(E) & CAD; 2. Implement
noise mitigation proposals. |
Limit Level |
1.
Identify source; 2.
Inform IC(E), CAD,
EPD and Heliport / Helicopter Operator; 3.
Repeat measurements
to confirm findings; 4.
Increase monitoring
frequency; 5.
Carry out analysis of
Helicopter Operator’s working procedures to determine possible mitigation to
be implemented; 6.
Inform IC(E), CAD and
EPD the causes and actions taken for the exceedances; 7.
Assess effectiveness
of Helicopter Operator’s remedial actions and keep IC(E), EPD and CAD
informed of the results; 8.
If exceedance stops,
cease additional monitoring. |
1.
Discuss amongst CAD,
ET, and Heliport / Helicopter Operator on the potential remedial actions; 2.
Review Heliport /
Helicopter Operator remedial actions whenever necessary to assure their
effectiveness and advise the CAD accordingly; 3.
Supervise the
implementation of remedial measures. |
1. Confirm
receipt of notification of failure in writing; 2. Notify
Heliport / Helicopter Operator; 3. Require
Heliport / Helicopter Operator to propose remedial measures for the analysed
noise problem; 4. Ensure
remedial measures properly implemented; 5. If
exceedance continues, consider what portion of the work is responsible and
instruct the Heliport / Helicopter Operator to reduce/stop the helicopter
flights operated at the proposed helipad until the exceedance is abated. |
1.
Take immediate action
to avoid further exceedance; 2.
Submit proposals for
remedial actions to IC(E) within 3
working days of notification; 3.
Implement the agreed
proposals; 4.
Resubmit proposals if
problem still not under control; 5.
Reduce/Stop the
helicopter flights operated at the proposed helipad as determined by the CAD
until the exceedance is abated. |
·
Only well-maintained plant should be operated
on-site and plant should be serviced regularly during the construction
programme;
·
Silencers or mufflers on construction equipment
should be utilised and should be properly maintained during the construction
programme;
·
Mobile plant, if any, should be sited as far
away 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;
·
Material stockpiles and other structures should
be effectively utilised, wherever practicable, in screening noise from on-site
construction activities.