Daytime Noise Monitoring Results -- Normal weekday

Station M7a, Wah Ming House

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

08-Feb-12

09:27

09:57

Cloudy

73

74

70

Grouting works

N.A

N.A

12.3

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2656516

13-Feb-12

09:43

10:13

Fine

74

75

72

Loading activities

N.A

N.A

19.1

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2656516

29-Feb-12

01:34

02:04

Cloudy

70

72

67

Drilling

N.A

N.A

14.7

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2656516

Min.

70

Max.

74

Remark: The noise monitoring on 23 Feb was cancelled due to raining