Restricted Hours Noise Monitoring Results -- Night time

Station M6a, Aegean Terrace

Date

Start Time

End Time

Weather

Noise level (dB(A)), 5 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

08-May-12

23:00

23:15

Fine

56

57

52

Grouting in the tunnel

Local traffic of Aegean Terence

According to contractor, general construction works was in process accordance to CNP. Free-field measurement, +3dB correction.

28.6

<5

B&K 2238       S/N : 2684502

B&K 4231  S/N: 2656516

24-May-12

23:00

23:15

Fine

57

58

53

Works inside tunnel

Local traffic of Aegean Terence

According to contractor, general construction works was in process accordance to CNP. Free-field measurement, +3dB correction.

26.1

<5

B&K 2238       S/N : 2684502

B&K 4231  S/N: 2656516

Min.

56

Max.

57