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-Oct-10

11:10

11:40

Sunny

70

72

68

excavation in process and crane in operation

other construction site nearby

-

28.4

<5 m/s

B&K 2238

B&K 4231

07-Oct-10

14:10

14:40

Fine

72

74

69

excavation in process and crane in operation

other construction site nearby

-

25.4

<5 m/s

B&K 2238

B&K 4231

13-Oct-10

15:10

15:40

Fine

70

73

67

excavation in process and crane in operation

other construction site nearby

Cargo transportation

27.6

<5 m/s

B&K 2238

B&K 4231

19-Oct-10

14:10

14:40

Sunny

74

75

72

excavation in process and crane in operation

other construction site nearby

-

26.1

<5 m/s

B&K 2238

B&K 4231

25-Oct-10

11:00

11:30

Sunny

74

76

70

excavation in process and crane in operation

other construction site nearby

-

24.9

<5 m/s

B&K 2238

B&K 4231

Min.

70

Max.

74

+ - Façade measurement