| Daytime Noise Monitoring Results -- Normal weekday |
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| Station M3, Kwan Yick building(*) |
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| Date |
Start Time |
End
Time |
Weather |
Noise level (dB(A)), 30 min |
Major
Construction Noise Source(s) Observed |
Other Noise
Source(s) Observed |
Remarks |
Temp. (°C) |
Wind Speed (m/s) |
Noise Meter Model / ID |
Calibrator Model / ID |
| Leq |
L10 |
L90 |
| 01-Jun-12 |
14:22 |
14:52 |
Fine |
67 |
68 |
66 |
- |
Traffic
Noise |
- |
28.0 |
0.5 |
RION- NL31
(S/N 00603867) |
RION - NC73 (S/N 10997142) |
| 07-Jun-12 |
10:22 |
10:52 |
Sunny |
67 |
69 |
66 |
No outdoor construction |
Traffic Noise |
- |
28.0 |
0.2 |
RION- NL31
(S/N 00603867) |
RION - NC73 (S/N 10997142) |
| 13-Jun-12 |
14:15 |
14:45 |
Cloudy |
68 |
69 |
66 |
No outdoor construction |
Traffic Noise |
- |
30.0 |
0.2 |
RION- NL31
(S/N 00603867) |
RION - NC73 (S/N 10997142) |
| 19-Jun-12 |
14:25 |
14:55 |
Cloudy |
67 |
68 |
65 |
No outdoor construction |
Traffic Noise |
- |
29.0 |
0.5 |
RION- NL31
(S/N 00603867) |
RION - NC73 (S/N 10997142) |
| 25-Jun-12 |
10:23 |
10:53 |
Cloudy |
68 |
69 |
66 |
- |
Traffic Noise |
- |
29.0 |
0.3 |
RION- NL31
(S/N 00603867) |
RION - NC73 (S/N 10997142) |
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Min. |
67 |
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Max. |
68 |
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Remark:
(*): The data were provided by Contract No. DC/2007/23. Calibration
certificates for the noise meter(s) and calibrator(s) used were included in
the corresponding Monthly EM&A Report for this Contract |
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| Station M5, Chuk Lam Ming Tong |
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| Date |
Start Time |
End Time |
Weather |
Noise level (dB(A)), 30 min |
Major Construction Noise Source(s) Observed |
Other Noise Source(s) Observed |
Remarks |
Temp. (°C) |
Wind Speed (m/s) |
Noise Meter Model / ID |
Calibrator Model / ID |
| Leq |
L10 |
L90 |
| 05-Jun-12 |
13:01 |
13:31 |
Sunny |
62 |
64 |
58 |
Rock out |
Road traffic noise and drilling in process in nearby building |
N.A |
28.2 |
<5 |
B&K
2238 S/N : 2684502 |
B&K 4231 S/N: 2656516 |
| 11-Jun-12 |
13:31 |
14:01 |
Sunny |
67 |
68 |
60 |
Rock out |
Road traffic noise and drilling in process in nearby building |
N.A |
29.4 |
<5 |
B&K
2238 S/N : 2684502 |
B&K 4231 S/N: 2656516 |
| 21-Jun-12 |
10:12 |
10:42 |
Sunny |
75 |
81 |
67 |
Muck out and holes drilling in tunnel |
Road traffic noise ,mainly from rock breaking near roadside from
other contractor |
N.A |
28.3 |
<5 |
B&K
2238 S/N : 2385180 |
B&K 4231 S/N: 2656516 |
| 27-Jun-12 |
10:07 |
10:37 |
Sunny |
76 |
82 |
62 |
Muck out and holes drilling in tunnel |
Road traffic noise ,mainly from rock breaking adjacent roadside
of NSR from other contractor |
N.A |
27.4 |
<5 |
B&K
2238 S/N : 2385180 |
B&K 4231 S/N: 2656516 |
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Min. |
62 |
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Max. |
76 |
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| Station M6a,
Aegean Terrace |
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| Date |
Start Time |
End Time |
Weather |
Noise level (dB(A)), 30 min |
Major Construction Noise Source(s) Observed |
Other Noise Source(s) Observed |
Remarks |
Temp. (°C) |
Wind Speed (m/s) |
Noise Meter Model / ID |
Calibrator Model / ID |
| Leq * |
L10 |
L90 |
| 04-Jun-12 |
10:41 |
11:11 |
Fine |
61 |
64 |
57 |
Drilling and loading |
Loading from the construction site near Cyberport PTW
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Free-field measurement, +3dB correction. |
27.0 |
<5 |
B&K
2238 S/N : 2684502 |
B&K 4231 S/N: 2656516 |
| 14-Jun-12 |
13:30 |
14:00 |
Fine |
55 |
57 |
53 |
Loading and operation of mobile crane |
Loading from the construction site near Cyberport PTW
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Free-field measurement, +3dB correction. |
27.4 |
<5 |
B&K
2238 S/N : 2385180 |
B&K 4231 S/N: 2656516 |
| 20-Jun-12 |
11:22 |
11:52 |
Drizzle |
54 |
56 |
48 |
Loading and operation of mobile crane |
N.A |
Free-field measurement, +3dB correction. |
29.9 |
<5 |
B&K
2238 S/N : 2385180 |
B&K 4231 S/N: 2656516 |
| 27-Jun-12 |
11:25 |
11:55 |
Sunny |
57 |
58 |
50 |
Operation of gantry |
N.A |
Free-field measurement, +3dB correction. |
27.4 |
<5 |
B&K
2238 S/N : 2385180 |
B&K 4231 S/N: 2656516 |
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Max. |
54 |
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Max. |
61 |
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| Remark:
Free-field measurement, +3dB correction. |
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