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

01-Dec-11

09:40

10:10

Sunny

71

73

68

Drilling

Operation of mobile breaker near Wah Ching House

N.A

18.7

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

07-Dec-11

09:20

09:50

Cloudy

61

62

59

Operation of mobile crane and loading

Operation of mobile breaker near Wah Ching House

N.A

22.3

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

13-Dec-11

11:30

12:00

Sunny

66

69

60

Operation of hand held breaker

Operation of mobile breaker near Wah Ching House, hand-held breaker operating on root top of Wah Chung House

N.A

17.1

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

19-Dec-11

10:04

10:34

Cloudy

68

70

63

Drilling

N.A

N.A

16.7

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

29-Dec-11

09:50

10:20

Cloudy

70

72

63

Drilling

N.A

N.A

17.7

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

Min.

61

Max.

71