3.
NOISE MONITORING
3.1
Monitoring Locations
3.1.1
The
noise monitoring works for the Contract are covered by Contract No. HY/2013/01 ¡§Hong
Kong-Zhuhai-Macao Bridge HKBCF ¡V Passenger Clearance Building¡¨. The ET of the
Contract or another ET of the HZMB project is required to conduct noise
monitoring at NMS2 and NMS3B as part of EM&A programme if these monitoring
stations are no longer covered under Contract No. HY/2013/01. Figure 2 shows the locations of noise
monitoring stations.
Table 3.1 Construction Noise Monitoring Location
ID No. |
Description |
NMS2 |
Seaview Crescent |
NMS3B |
Site Boundary of Site Office Area at WA2 |
NMS3C |
Ying Tung Estate Refuse Collection Point |
Remarks: NMS3C is the alternative NM Station.
3.2
Monitoring Requirements
3.2.1
The
monitoring requirements, monitoring equipment, monitoring parameters, frequency
and duration, monitoring methodology and monitoring schedule are detailed in
the monthly EM&A Reports prepared for Contract No. HY/2013/01 and
HY/2013/04.
3.2.2
The
Action and Limit Levels for construction noise are defined in Table 3.2.
Table
3.2 Action and Limit Level for Construction Noise
Monitoring Station |
Action Level |
Limit Level |
For the Time Period 0700-1900 hrs. on Normal Weekdays |
||
NMS2 |
When one documented complaint is received |
75.0 dB (A) Leq (30
min.) |
NMS3C |
70.0 dB (A) Leq (30
min.)* |
Notes: If works are to be carried out during
restricted hours, the conditions stipulated in the construction noise permit
issued by the Noise Control Authority have to be followed.
* Reduce to 70 dB(A)
for schools and 65 dB(A) during school examination period
3.3
Monitoring Results
3.3.1
The
monitoring result for NMS2 and NMS3C is reported in the monthly EM&A
Reports prepared for Contract No. HY/2013/01. No noise exceedance was recorded
at stations NMS2 and NMS3C by the ET of Contract No. HY/2013/01 during the
reporting period.