3. NOISE MONITORING
3.1 Monitoring Locations
3.1.1 The noise monitoring works for the Contract are covered by Contract No. HY/2010/02 “Hong Kong-Zhuhai-Macao Bridge HKBCF – Reclamation Works”. 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/2010/02. 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/2010/02.
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/2010/02. No noise exceedance was recorded at stations NMS2 and NMS3B by the ET of Contract No. HY/2010/02 during the reporting period.