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 |
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.
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.) |
NMS3B |
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 results for NMS2 and NMS3B are
reported in the monthly EM&A Reports prepared for Contract No. HY/2013/01. No
noise exceedance was recorded at stations NMS2 and NMS3B by the ET of Contract
No. HY/2013/01 during the reporting period.