Appendix I Impact Daytime Construction Noise Monitoring
Results |
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Location
: NM1A (168 Shek Kwu Lung Village G/F- Façade) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level,
dB(A) |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A) |
Exceedance (Y/N) |
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Date |
Start Time |
Leq |
L10 |
L90 |
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5-Jan-12 |
10:31 |
62.2 |
64.0 |
57.0 |
64.2 |
62.2 |
75 |
N |
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11-Jan-12 |
10:24 |
59.6 |
61.0 |
56.0 |
64.2 |
59.6 |
75 |
N |
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17-Jan-12 |
10:32 |
61.7 |
63.3 |
58.2 |
64.2 |
61.7 |
75 |
N |
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26-Jan-12 |
13:31 |
63.8 |
66.0 |
61.0 |
64.2 |
63.8 |
75 |
N |
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31-Jan-12 |
11:30 |
60.7 |
62.5 |
57.2 |
64.2 |
60.7 |
75 |
N |
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Corrected
Noise Level dB(A) |
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Average |
61.8 |
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Max |
63.8 |
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Min |
59.6 |
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Location
: NM2 (38 Ha Wun Yiu G/F - Free Field) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level, dB(A)* |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A) |
Exceedance (Y/N) |
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Date |
Start Time |
Leq* |
L10* |
L90* |
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5-Jan-12 |
13:06 |
66.8 |
69.1 |
62.7 |
68.1 |
66.8 |
75 |
N |
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11-Jan-12 |
13:05 |
63.8 |
65.5 |
61.5 |
68.1 |
63.8 |
75 |
N |
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17-Jan-12 |
13:38 |
67.3 |
69.1 |
64.2 |
68.1 |
67.3 |
75 |
N |
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26-Jan-12 |
14:48 |
68.4 |
70.0 |
64.0 |
68.1 |
56.6 |
75 |
N |
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31-Jan-12 |
13:48 |
66.3 |
68.1 |
62.9 |
68.1 |
66.3 |
75 |
N |
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Corrected
Noise Level dB(A) |
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Average |
65.4 |
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Max |
67.3 |
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Min |
56.6 |
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* +3dB(A) Façade effect correction included |
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**
Construction noise level is only calculated when Measured noise level (Leq)
> Baseline noise level. |
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If Measured noise level < Baseline
noise level, Corrected noise level = Measured noise level |
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Appendix I |
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Location
: NM3 (Wong Shiu Chi Middle School Rooftop - Façade) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level,
dB(A) |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A)# |
Exceedance (Y/N) |
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Date |
Start Time |
Leq |
L10 |
L90 |
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5-Jan-12 |
11:27 |
68.0 |
69.5 |
66.0 |
64.8 |
65.2 |
65 |
N |
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11-Jan-12 |
11:11 |
64.2 |
66.1 |
62.0 |
64.8 |
64.2 |
65 |
N |
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17-Jan-12 |
15:09 |
65.6 |
67.3 |
62.4 |
64.8 |
57.9 |
65 |
N |
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26-Jan-12 |
14:09 |
63.8 |
66.0 |
58.0 |
64.8 |
63.8 |
70 |
N |
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31-Jan-12 |
13:50 |
65.4 |
67.0 |
63.5 |
64.8 |
56.5 |
70 |
N |
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Corrected
Noise Level dB(A) |
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Average |
62.7 |
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Max |
65.2 |
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Min |
56.5 |
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Location
: NM4 (Uptown Plaza Block 4 Rooftop - Façade) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level, dB(A) |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A) |
Exceedance (Y/N) |
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Date |
Start Time |
Leq |
L10 |
L90 |
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5-Jan-12 |
11:18 |
65.9 |
67.6 |
63.4 |
67.4 |
65.9 |
75 |
N |
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11-Jan-12 |
11:08 |
65.7 |
67.5 |
63.2 |
67.4 |
65.7 |
75 |
N |
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17-Jan-12 |
14:25 |
66.2 |
67.9 |
62.6 |
67.4 |
66.2 |
75 |
N |
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26-Jan-12 |
11:27 |
68.1 |
70.0 |
65.0 |
67.4 |
59.8 |
75 |
N |
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31-Jan-12 |
13:03 |
66.4 |
68.0 |
63.5 |
67.4 |
66.4 |
75 |
N |
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Corrected
Noise Level dB(A) |
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Average |
65.3 |
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Max |
66.4 |
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Min |
59.8 |
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#
- Limit Level of 70dB(A) applies to education institutes while 65dB(A)
applies during school examination period. |
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**
Construction noise level is only calculated when Measured noise level (Leq)
> Baseline noise level. |
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If Measured noise level < Baseline
noise level, Corrected noise level = Measured noise level |
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Appendix I |
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Location
: NM5 (The Paragon Clubhouse Rooftop - Façade) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level, dB(A) |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A) |
Exceedance (Y/N) |
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Date |
Start Time |
Leq |
L10 |
L90 |
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5-Jan-12 |
13:18 |
66.3 |
68.0 |
63.0 |
65.2 |
59.8 |
75 |
N |
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11-Jan-12 |
13:13 |
64.8 |
67.0 |
62.3 |
65.2 |
64.8 |
75 |
N |
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17-Jan-12 |
11:17 |
66.7 |
68.5 |
63.5 |
65.2 |
61.4 |
75 |
N |
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26-Jan-12 |
10:37 |
65.7 |
67.5 |
61.5 |
65.2 |
56.1 |
75 |
N |
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31-Jan-12 |
13:05 |
65.8 |
67.4 |
63.2 |
65.2 |
56.9 |
75 |
N |
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Corrected
Noise Level dB(A) |
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Average |
61.0 |
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Max |
64.8 |
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Min |
56.1 |
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Location
: NM6 (PLK Tin Ka Ping Primary School near the entrance - Free Field) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level, dB(A)* |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A)# |
Exceedance (Y/N) |
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Date |
Start Time |
Leq* |
L10* |
L90* |
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5-Jan-12 |
10:22 |
64.5 |
66.2 |
62.1 |
64.5 |
64.5 |
65 |
N |
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11-Jan-12 |
10:12 |
62.4 |
64.2 |
60.1 |
64.5 |
62.4 |
70 |
N |
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17-Jan-12 |
11:26 |
64.5 |
66.2 |
61.8 |
64.5 |
64.5 |
70 |
N |
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26-Jan-12 |
15:46 |
63.7 |
65.5 |
58.0 |
64.5 |
63.7 |
70 |
N |
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31-Jan-12 |
11:25 |
62.0 |
63.5 |
59.0 |
64.5 |
62.0 |
70 |
N |
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Corrected
Noise Level dB(A) |
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Average |
63.5 |
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Max |
64.5 |
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Min |
62.0 |
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Remarks |
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* +3dB(A) Façade effect correction included |
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#
- Limit Level of 70dB(A) applies to education institutes while 65dB(A)
applies during school examination period. |
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**
Construction noise level is only calculated when Measured noise level (Leq)
> Baseline noise level. |
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If Measured noise level < Baseline
noise level, Corrected noise level = Measured noise level |
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Appendix I |
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Location
: NM7 (Riverain Bayside Switch Room Rooftop - Façade) |
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Day
time 07:00-19:00 hrs Normal Weekdays Impact Noise Monitoring Results |
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Measured
Noise Level for 30-min, dB(A) |
Baseline Noise Level, dB(A) |
Corrected Construction
Noise Level, dB(A) ** |
Limit Level, dB(A) |
Exceedance (Y/N) |
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Date |
Start Time |
Leq |
L10 |
L90 |
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5-Jan-12 |
14:02 |
61.9 |
64.0 |
59.2 |
61.5 |
51.3 |
75 |
N |
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11-Jan-12 |
13:56 |
61.6 |
63.0 |
59.0 |
61.5 |
45.2 |
75 |
N |
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17-Jan-12 |
10:00 |
62.2 |
64.0 |
59.5 |
61.5 |
53.9 |
75 |
N |
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26-Jan-12 |
9:51 |
66.2 |
68.5 |
63.0 |
61.5 |
64.4 |
75 |
N |
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31-Jan-12 |
14:41 |
61.5 |
63.3 |
58.0 |
61.5 |
61.5 |
75 |
N |
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Corrected
Noise Level dB(A) |
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Average |
59.6 |
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Max |
64.4 |
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Min |
45.2 |
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Remarks |
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**
Construction noise level is only calculated when Measured noise level (Leq)
> Baseline noise level. |
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If Measured noise level < Baseline
noise level, Corrected noise level = Measured noise level |
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