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

05-Sep-12

09:17

09:47

Sunny

64

64

62

Shotcrete

N.A

N.A

28

<5

B&K 2238 S/N : 2385180

B&K 4231  S/N: 3003246

11-Sep-12

13:02

13:32

Sunny

66

68

62

Loading and mucking

N.A

N.A

30

<5

B&K 2238 S/N : 2385180

B&K 4231  S/N: 3003246

17-Sep-12

09:18

09:48

Sunny

68

70

63

Operation of Mobile crane

N.A

N.A

27

<5

B&K 2238 S/N : 2385180

B&K 4231  S/N: 3003246

27-Sep-12

09:16

09:46

Sunny

64

65

63

Operation of Mobile crane

N.A

N.A

28

<5

B&K 2238 S/N : 2385180

B&K 4231  S/N: 3003246

Min.

64

Max.

68