Daytime Noise Monitoring Results -- Normal weekday

Station M5, Chuk Lam Ming Tong

Date

Start Time

End Time

Weather

Noise level (dB(A)), 30 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

03-Jul-13

11:08

11:38

Sunny

62.8

64.8

58.3

Operatorion of excavator and welding

Road traffic noise and rock excavation in Sandy Bay Sewage Screening Plant by other contractor

N.A

29.7

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

08-Jul-13

13:22

13:52

Sunny

72.7

75.4

62.7

Tunnel works

Road traffic noise and rock excavation in Sandy Bay Sewage Screening Plant by other contractor

N.A

28.8

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

18-Jul-13

13:26

13:56

Sunny

64.0

65.7

60.3

Tunnel works

Road traffic noise

N.A

27.3

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3003246

30-Jul-13

11:25

11:55

Sunny

62.7

64.1

59.5

Tunnel works

Road traffic noise

N.A

29.1

<5

B&K 2238   S/N : 2381580

B&K 4231  S/N: 3004068

Min.

62.7

Max.

72.7