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

04-Jun-10

23:00

23:15

Cloudy

66

68

64

Operating bentonite filitering plant and hydraulic extractor

Traffic noise

-

24.7

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

07-Jun-10

23:00

23:15

Fine

66

67

64

Operating bentonite filitering plant and hydraulic extractor

Traffic noise

-

25.5

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

15-Jun-10

23:00

23:15

Cloudy

66

67

64

Operating bentonite filitering plant ,hydraulic extractor and generator

Traffic noise

-

29.3

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

21-Jun-10

23:00

23:15

Cloudy

65

67

63

Operating bentonite filitering plant ,hydraulic extractor and generator

Traffic noise

-

29.6

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2385180

Min.

65

Max.

66