Table 4.9 Summary Table of Underwater Noise Monitoring
Results during the Reporting Quarter
|
Date |
Pier No. |
Station |
Underwater Noise (dB re
1µPa) |
Period |
||
|
Max |
Average |
Min |
||||
|
11-Jul-13 |
0 |
R3 |
156.8 |
139.8 |
117.7 |
10-18 |
|
12-Jul-13 |
0 |
R3 |
164.6 |
139.7 |
115.4 |
9-18 |
|
15-Jul-13 |
0 |
R3 |
161.6 |
135.3 |
119.7 |
9-18 |
|
16-Jul-13 |
0 |
R3 |
153.9 |
133.6 |
120.5 |
9-18 |
|
17-Jul-13 |
0 |
R3 |
149.8 |
134.4 |
120.1 |
9-18 |
|
18-Jul-13 |
0 |
R3 |
149.9 |
138.4 |
122.5 |
9-18 |
|
19-Jul-13 |
0 |
R3 |
159.1 |
138.8 |
120.3 |
9-18 |
|
22-Jul-13 |
0 |
R3 |
155.2 |
140.0 |
122.2 |
9-18 |
|
23-Jul-13 |
0 |
R3 |
154.8 |
141.9 |
122.4 |
9-18 |
|
24-Jul-13 |
0 |
R3 |
155.1 |
141.2 |
120.8 |
9-18 |
Remarks: All underwater noise
monitoring was conducted during the bored piling activities
Frequency: 70 Hz – 125 kHz