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

06-Feb-13

09:18

09:48

Fine

65.3

67.4

61.6

Operatorion of mobile crane

N.A

N.A

21

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

15-Feb-13

10:23

10:53

Fine

58.6

59.9

56.5

Operatorion of mobile crane

N.A

N.A

21

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

19-Feb-13

13:03

13:33

Fine

65.9

68.8

61.5

Operatorion of mobile crane

N.A

N.A

21

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

25-Feb-13

09:22

09:52

Sunny

68.3

70.5

63.4

Operatorion of mobile crane and loading

Drilling with hand held breaker at near construction site

N.A

20

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

Min.

58.6

Max.

68.3