3.
NOISE MONITORING
3.1
Monitoring Locations
3.1.1
The
noise monitoring works for the Contract are covered by Contract No. HY/2013/04 ¡§Hong
Kong-Zhuhai-Macao Bridge HKBCF ¡V Infrastructure Works Stage II (Southern
Portion)¡¨. The ET of the Contract or another ET of the HZMB project is required
to conduct noise monitoring at NMS2 and NMS3C as part of EM&A programme if
these monitoring stations are no longer covered under Contract No. HY/2013/04. Figure 2 shows the locations of noise
monitoring stations.
Table 3.1 Construction Noise Monitoring Location
ID No. |
Description |
NMS2 |
Seaview Crescent |
NMS3C |
Ying Tung Estate Refuse Collection Point |
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/2013/04.
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/2013/04. No noise exceedance was recorded
at stations NMS2 and NMS3C by the ET of Contract No. HY/2013/04 during the
reporting period.