Restricted Hours Noise Monitoring Results (Evening Time)

Station NM6 Customs' Marine Base (Block H of Government Dockyard) Rooftop

Date

Start Time

End Time

Weather

Noise level (dB(A)), 5 min+

Major Construction Noise Source(s) Observed

Other Noise Source(s) Observed

Remarks

Mean Temp. (°C)

Mean Wind Speed (m/s)

Noise Meter Model / ID

Calibrator Model / ID

Leq

L10

L90

10-Dec-11

20:32

20:37

Fine

65

65

64

excavation in process

traffic noise from nearby pier

-

13.1

<5 m/s

B&K 2250L

B&K 4231

20:37

20:42

65

65

64

20:42

20:47

64

65

64

16-Dec-11

20:32

20:37

Fine

64

65

64

excavation in process

traffic noise from nearby pier

-

17.0

<5 m/s

B&K 2270

B&K 4231

20:37

20:42

65

65

64

20:42

20:47

64

64

63

22-Dec-11

21:32

21:37

Fine

64

64

63

excavation in process

traffic noise from nearby pier

-

17.9

<5 m/s

B&K 2238

B&K 4231

21:37

21:42

64

64

63

21:42

21:47

64

64

63

28-Dec-11

21:07

21:12

Fine

66

66

65

excavation in process; crane in operation

traffic noise from nearby pier

-

17.3

<5 m/s

B&K 2238

B&K 4231

21:12

21:17

66

66

65

21:17

21:22

66

66

65

Min.

64

Max.

66

+ - Façade measurement