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

05-Jun-12

13:01

13:31

Sunny

62

64

58

Rock out

Road traffic noise and drilling in process in nearby building

N.A

28.2

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2656516

11-Jun-12

13:31

14:01

Sunny

67

68

60

Rock out

Road traffic noise and drilling in process in nearby building

N.A

29.4

<5

B&K 2238   S/N : 2684502

B&K 4231  S/N: 2656516

21-Jun-12

10:12

10:42

Sunny

75

81

67

Muck out and holes drilling in tunnel

Road traffic noise ,mainly from rock breaking near roadside from other contractor

N.A

28.3

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 2656516

27-Jun-12

10:07

10:37

Sunny

76

82

62

Muck out and holes drilling in tunnel

Road traffic noise ,mainly from rock breaking adjacent roadside of NSR from other contractor

N.A

27.4

<5

B&K 2238   S/N : 2385180

B&K 4231  S/N: 2656516

Min.

62

Max.

76