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

01-Mar-10

16:37

17:07

Sunny

73

74

71

excavation and concreting in process and crane in operation

other construction site nearby

-

22.1

<5 m/s

B&K 2238

B&K 4231

12-Mar-10

14:03

14:33

Sunny

71

73

70

excavation in process and crane in operation

other construction site nearby

-

16.8

<5 m/s

B&K 2238

B&K 4231

18-Mar-10

15:22

15:52

Sunny

73

74

72

excavation in process and crane in operation

other construction site nearby

cargo transport

20.9

<5 m/s

B&K 2238

B&K 4231

24-Mar-10

14:00

14:30

Sunny

72

72

71

excavation in process and crane in operation

other construction site nearby

maintenance works carried out on the rooftop of Customs' Marine Base

24.4

<5 m/s

B&K 2238

B&K 4231

30-Mar-10

15:45

16:15

Sunny

73

74

71

excavation and concreting in process and crane in operation

other construction site nearby

maintenance works carried out on the rooftop of Customs' Marine Base

19

<5 m/s

B&K 2238

B&K 4231

Min.

71

Max.

73