Restricted Hours Noise Monitoring Results -- Night time

Station M3, Kwa Yick Building

Date

Start Time

End Time

Weather

Noise level (dB(A)), 15 min

Major Construction Noise Source(s) Observed

Other Noise Source(s) Observed

Remarks

Temp. (°C)

Wind Speed (m/s)

Noise Meter Model / ID

Calibrator Model / ID

Leq

L10

L90

02-Sep-10

23:00

23:15

Fine

67

68

64

Operating bentonite filitering plant ,hydraulic extractor and generator

Road traffic noise from Western Harbour Crossing, engine of turbojet,  planes and helicopter overhead.

N.A

29.5

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

08-Sep-10

23:00

23:15

Cloudy

65

67

61

Operating bentonite filitering plant ,hydraulic extractor and generator

Road traffic noise from Western Harbour Crossing, engine of turbojet and took off of planes.

N.A

29.9

<5

B&K 2238   S/N : 2684503

B&K 4231  S/N: 2385180

16-Sep-10

23:00

23:15

Fine

66

68

63

Operating bentonite filitering plant ,hydraulic extractor and generator

Road traffic noise from Western Harbour Crossing, engine of turbojet and took off of planes.

N.A

28.9

<5

B&K 2238   S/N : 2684503

B&K 4231  S/N: 2385180

24-Sep-10

23:00

23:15

Fine

66

67

63

Operating bentonite filitering plant ,hydraulic extractor and generator

Road traffic noise from Western Harbour Crossing, engine of turbojet,  planes and helicopter overhead.

N.A

27.7

<5

B&K 2238   S/N : 2684503

B&K 4231  S/N: 2656516

29-Sep-10

23:00

23:15

Fine

65

67

63

No major construction works

Road traffic noise from Western Harbour Crossing, engine of turbojet,  planes and helicopter overhead.

N.A

28.5

<5

B&K 2238   S/N : 2684503

B&K 4231  S/N: 2656516

00-Jan-00

-

-

-

-

-

-

-

-

-

-

-

-

-

Min.

65

Max.

67