| 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 |
| 07-Dec-12 |
10:22 |
10:52 |
Fine |
67.4 |
68.9 |
66.2 |
- |
Traffic Noise |
- |
20 |
0.5 |
RION- NL31 (S/N 00603867) |
RION - NC73 (S/N 10997142) |
| 13-Dec-12 |
14:22 |
14:52 |
Sunny |
67.0 |
68.3 |
65.6 |
- |
Traffic Noise |
- |
20 |
0.5 |
RION- NL31 (S/N 00603868) |
RION - NC73 (S/N 10997143) |
| 19-Dec-12 |
10:24 |
10:54 |
Cloudy |
66.9 |
68.2 |
65.5 |
- |
Traffic Noise |
- |
19 |
0.5 |
RION- NL31 (S/N 00603868) |
RION - NC73 (S/N 10997143) |
| 24-Dec-12 |
16:22 |
16:52 |
Sunny |
67.2 |
68.7 |
65.9 |
- |
Traffic Noise |
- |
19 |
0.5 |
RION- NL31 (S/N 00603869) |
RION - NC73 (S/N 10997144) |
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Min. |
66.9 |
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Max. |
67.4 |
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| Remark: (*): The data were provided by Contract
No. DC/2007/23. Calibration certificates for the noise meter(s) |
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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 |
| 04-Dec-12 |
14:46 |
15:16 |
Fine |
61.4 |
64.1 |
55.8 |
Operation
of excavator |
Road
traffic noise |
N.A |
17.3 |
<5 |
B&K 2238 S/N : 2381580 |
B&K
4231 S/N: 3003246 |
| 10-Dec-12 |
13:34 |
14:04 |
Fine |
63.7 |
66.4 |
57.3 |
Operation of excavator |
Road traffic noise |
N.A |
18.3 |
<5 |
B&K
2238 S/N : 2381580 |
B&K 4231 S/N: 3003246 |
| 19-Dec-12 |
13:34 |
14:04 |
Fine |
64.6 |
66.8 |
59.3 |
works in noise enclosure |
Road traffic noise |
N.A |
15.1 |
<5 |
B&K
2238 S/N : 2381580 |
B&K 4231 S/N: 3003246 |
| 27-Dec-12 |
15:17 |
15:47 |
Fine |
63.1 |
65.6 |
60.0 |
works in noise enclosure |
Road traffic noise |
N.A |
18.6 |
<5 |
B&K
2238 S/N : 2381580 |
B&K 4231 S/N: 3003246 |
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Min. |
61.4 |
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Max. |
64.6 |
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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 |
| 03-Dec-12 |
10:59 |
11:29 |
Fine |
54.4 |
56.9 |
48.8 |
Rock out |
N.A |
Free-field
measurement, +3dB correction. |
17.1 |
<5 |
B&K 2238 S/N : 2381580 |
B&K
4231 S/N: 3003246 |
| 13-Dec-12 |
10:19 |
10:49 |
Fine |
59.7 |
62.4 |
50.0 |
operatorion of excavator |
N.A |
Free-field measurement, +3dB correction. |
18.9 |
<5 |
B&K
2238 S/N : 2381580 |
B&K 4231 S/N: 3003246 |
| 19-Dec-12 |
10:38 |
11:08 |
Fine |
56.5 |
58.5 |
49.8 |
operatorion of excavator |
N.A |
Free-field measurement, +3dB correction. |
15.1 |
<5 |
B&K
2238 S/N : 2381580 |
B&K 4231 S/N: 3003246 |
| 27-Dec-12 |
14:28 |
14:58 |
Fine |
59.3 |
61.6 |
54.2 |
Rock out |
N.A |
Free-field measurement, +3dB correction. |
18.6 |
<5 |
B&K
2238 S/N : 2381580 |
B&K 4231 S/N: 3003246 |
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Min. |
54.4 |
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Max. |
59.7 |
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| Remark:
Free-field measurement, +3dB correction. |
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