Daytime Noise Monitoring Results

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

Date

Start Time

End Time

Weather

Noise level (dB(A)), 30 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

02-Sep-10

11:50

12:20

Fine

74

77

71

excavation in process and crane in operation

other construction site nearby

-

29.5

<5 m/s

B&K 2238

B&K 4231

08-Sep-10

10:17

10:47

Sunny

68

63

70

excavation in process and crane in operation

other construction site nearby

-

29.9

<5 m/s

B&K 2238

B&K 4231

14-Sep-10

10:20

10:50

Sunny

70

72

68

excavation in process and crane in operation

other construction site nearby

-

27.2

<5 m/s

B&K 2238

B&K 4231

20-Sep-10

10:25

10:55

Fine

73

75

71

excavation in process and crane in operation

other construction site nearby

-

28.3

<5 m/s

B&K 2238

B&K 4231

Min.

68

Max.

74

+ - Facade measurement