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

02-Aug-12

09:17

09:47

Sunny

70

72

65

Operation of mobile crane and loading

N.A

N.A

32

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 2656516

08-Aug-12

09:18

09:48

Sunny

66

68

64

Operation of mobile crane and loading

N.A

N.A

31

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 2656516

14-Aug-12

13:25

13:55

Sunny

63

64

60

Grouting

N.A

N.A

28

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 2656516

20-Aug-12

09:25

09:55

Sunny

68

70

62

Shotcrete

N.A

N.A

30

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 3003246

30-Aug-12

09:22

09:52

Sunny

64

64

62

Drilling

N.A

N.A

30

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 3003246

00-Jan-00

-

-

-

-

-

-

-

-

-

-

-

-

-

Min.

64

Max.

70