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

07-Apr-10

15:36

16:06

Cloudy

excavation in process and crane in operation

other construction site nearby

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

22.9

<5 m/s

B&K 2238

B&K 4231

17-Apr-10

16:00

16:30

Sunny

excavation in process and crane in operation

other construction site nearby

averaged baseline noise level is Leq (30-min) 76.5 dB(A)

18.4

<5 m/s

B&K 2238

B&K 4231

23-Apr-10

11:02

11:32

Sunny

excavation in process and crane in operation

other construction site nearby

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

<5 m/s

B&K 2238

B&K 4231

29-Apr-10

11:35

12:05

Cloudy

excavation in process and crane in operation

other construction site nearby; cargo transport

maintenance works carried out on the rooftop of Customs' Marine Base;averaged baseline noise level is Leq (30-min) 76.5 dB(A)

21.3

<5 m/s

B&K 2238

B&K 4231

Min.

Max.