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

10-Jul-10

13:01

13:31

Sunny

74

76

72

excavation and concreting in process and crane in operation

other construction site nearby

-

29.8

<5 m/s

B&K 2238

B&K 4231

16-Jul-10

14:45

15:15

Cloudy

74

77

72

excavation in process and crane in operation

other construction site nearby

-

27.6

<5 m/s

B&K 2238

B&K 4231

22-Jul-10

11:16

11:46

Cloudy

67

68

66

excavation and concreting in process and crane in operation

other construction site nearby

-

27.2

<5 m/s

B&K 2238

B&K 4231

28-Jul-10

13:50

14:20

Cloudy

70

72

69

excavation and concreting in process and crane in operation

other construction site nearby

cargo transport

26.9

<5 m/s

B&K 2238

B&K 4231

Min.

67

Max.

74

+ - Façade measurement