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

04-Mar-11

10:00

10:30

Sunny

70

72

68

excavation in process and crane in operation

other construction site nearby

-

16.9

<5 m/s

Rion NL-31

Rion NC-73

10-Mar-11

14:30

15:00

Sunny

68

70

67

excavation in process and crane in operation

other construction site nearby

-

16.9

<5 m/s

Rion NL-31

Rion NC-73

16-Mar-11

10:49

11:19

Cloudy

72

74

69

excavation in process and crane in operation

other construction site nearby

-

15.9

<5 m/s

B&K 2270

B&K 4231

22-Mar-11

11:03

11:33

Fine

70

73

66

excavation in process and crane in operation

other construction site nearby

19.7

<5 m/s

B&K 2238

B&K 4231

28-Mar-11

14:00

14:30

Fine

72

74

68

excavation in process and crane in operation

other construction site nearby

-

16.9

<5 m/s

B&K 2238

B&K 4231

Min.

68

Max.

72

+ - Façade measurement