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 |
||||
|
13-Mar-13 |
48 |
R1 |
159.6 |
129.3 |
108.3 |
10-17 |
|
14-Mar-13 |
48 |
R1 |
157.5 |
126.7 |
110.4 |
9-17 |
|
15-Mar-13 |
48 |
R1 |
163.0 |
128.5 |
108.7 |
9-17 |
|
*18-Mar-13 |
48 |
R1 |
152.3 |
125.0 |
109.4 |
9-18 |
|
*19-Mar-13 |
48 |
R1 |
154.2 |
121.4 |
109.9 |
9-15 |
|
*20-Mar-13 |
48 |
R1 |
145.0 |
125.5 |
112.2 |
13-20 |
|
*21-Mar-13 |
48 |
R1 |
162.8 |
122.8 |
108.7 |
9-18 |
|
*22-Mar-13 |
48 |
R1 |
144.9 |
121.6 |
108.9 |
9-18 |
|
*23-Mar-13 |
48 |
R1 |
161.5 |
122.9 |
110.5 |
9-17 |
|
*25-Mar-13 |
48 |
R1 |
151.5 |
125.6 |
109.4 |
9-16 |
|
26-Mar-13 |
52 |
R2 |
165.9 |
128.5 |
111.2 |
9-10,
14-15 |
|
*27-Mar-13 |
52 |
R2 |
152.1 |
127.9 |
110.7 |
9-18 |
|
*28-Mar-13 |
52 |
R2 |
156.5 |
133.3 |
112.2 |
12-16 |
|
*2-Apr-13 |
52 |
R2 |
155.8 |
129.5 |
110.8 |
9-18 |
|
*3-Apr-13 |
52 |
R2 |
147.1 |
125.5 |
111.8 |
9-18 |
|
*5-Apr-13 |
52 |
R2 |
156.7 |
129.8 |
111.6 |
9-17 |
|
*8-Apr-13 |
52 |
R2 |
157.2 |
128.7 |
109.4 |
9-18 |
|
*9-Apr-13 |
52 |
R2 |
155.2 |
130.3 |
112.3 |
9-18 |
|
*10-Apr-13 |
52 |
R2 |
146.6 |
129.1 |
112.7 |
9-16 |
|
11-Apr-13 |
52 |
R2 |
145.0 |
128.8 |
111.0 |
9-17 |
|
*25-Apr-13 |
48 |
R1 |
156.6 |
129.8 |
112.3 |
9-18 |
|
*26-Apr-13 |
48 |
R1 |
163.9 |
129.3 |
113.9 |
9-18 |
|
*27-Apr-13 |
52 |
R2 |
149.8 |
134.0 |
118.5 |
9-17 |
|
*29-Apr-13 |
52 |
R2 |
160.1 |
133.9 |
113.8 |
9-18 |
|
*30-Apr-13 |
48 |
R1 |
146.9 |
132.3 |
112.9 |
9-14,
16-18 |
Remarks: * Underwater noise
monitoring was conducted during the bored piling activities
Frequency: 70 Hz – 125 kHz