| Appendix 3.9 - Maximum
Combination of Flights Number Predicted during Future Operation (1900 - 2300
hours) |
|
|
|
|
| Mode
1 Operation - Apprach from East and Takeoff to West |
|
|
| NSR - Bauhinia |
|
| Maximum
Combination of flights during future operation |
|
| Existing pad |
Proposed New pad |
|
|
| No. of movements at Existing pad |
Noise
Level, Leq(4-hour) |
No. of movements at New pad |
Noise
Level, Leq(4-hour) |
Cumulative
impact during future operation, Leq(4-hour) |
Noise levels difference between with and without
the project* |
|
|
| 22 |
67.5 |
7 |
59.3 |
68.2 |
0.6 |
|
| 21 |
67.3 |
9 |
60.4 |
68.1 |
0.6 |
|
| 20 |
67.1 |
10 |
60.8 |
68.0 |
0.5 |
|
| 19 |
66.9 |
12 |
61.6 |
68.0 |
0.5 |
|
| 18 |
66.7 |
13 |
62.0 |
67.9 |
0.4 |
|
| 17 |
66.4 |
15 |
62.6 |
67.9 |
0.4 |
|
| 16 |
66.2 |
16 |
62.9 |
67.8 |
0.3 |
|
| 15 |
65.9 |
18 |
63.4 |
67.8 |
0.3 |
|
| 14 |
65.6 |
19 |
63.6 |
67.7 |
0.2 |
|
| 13 |
65.3 |
20 |
63.8 |
67.6 |
0.1 |
|
| 12 |
64.9 |
22 |
64.2 |
67.6 |
0.1 |
|
| *The
difference between the cumulative noise level under future operation and the
noise level at existing pad |
|
| under
the current maximum allowable no. of helicopter movements (i.e. 67.5 dB(A)
under 22 movements) |
|
|
| NSR
- Ka On Building |
|
| Maximum
Combination of flights during future operation |
|
| Existing pad |
Proposed New pad |
|
|
| No. of movements at Existing pad |
Noise
Level, Leq(4-hour) |
No. of movements at New pad |
Noise
Level, Leq(4-hour) |
Cumulative
impact during future operation, Leq(4-hour) |
Noise levels difference between with and without
the project* |
|
|
| 22 |
64.3 |
7 |
55.5 |
64.9 |
0.5 |
|
| 21 |
64.1 |
9 |
56.6 |
64.8 |
0.5 |
|
| 20 |
63.9 |
10 |
57.0 |
64.7 |
0.4 |
|
| 19 |
63.7 |
12 |
57.8 |
64.7 |
0.4 |
|
| 18 |
63.5 |
13 |
58.2 |
64.6 |
0.3 |
|
| 17 |
63.2 |
15 |
58.8 |
64.6 |
0.2 |
|
| 16 |
62.9 |
16 |
59.1 |
64.4 |
0.1 |
|
| 15 |
62.7 |
18 |
59.6 |
64.4 |
0.1 |
|
| 14 |
62.4 |
19 |
59.8 |
64.3 |
0.0 |
|
| 13 |
62.0 |
20 |
60.1 |
64.2 |
-0.2 |
|
| 12 |
61.7 |
22 |
60.5 |
64.1 |
-0.2 |
|
| *The
difference between the cumulative noise level under future operation and the
noise level at existing pad |
|
|
| under
the current maximum allowable no. of helicopter movements (i.e. 64.3 dB(A)
under 22 movements) |
|
| NSR - Talon Tower |
|
| Maximum
Combination of flights during future operation |
|
| Existing pad |
Proposed New pad |
|
|
| No. of movements at Existing pad |
Noise
Level, Leq(4-hour) |
No. of movements at New pad |
Noise
Level, Leq(4-hour) |
Cumulative
impact during future operation, Leq(4-hour) |
Noise levels difference between with and without
the project* |
|
|
| 22 |
66.2 |
7 |
59.6 |
67.1 |
0.9 |
|
| 21 |
66.0 |
9 |
60.7 |
67.1 |
0.9 |
|
| 20 |
65.8 |
10 |
61.1 |
67.1 |
0.9 |
|
| 19 |
65.6 |
12 |
61.9 |
67.1 |
0.9 |
|
| 18 |
65.3 |
13 |
62.3 |
67.1 |
0.9 |
|
| 17 |
65.1 |
15 |
62.9 |
67.1 |
0.9 |
|
| 16 |
64.8 |
16 |
63.2 |
67.1 |
0.9 |
|
| 15 |
64.5 |
18 |
63.7 |
67.1 |
0.9 |
|
| 14 |
64.2 |
19 |
63.9 |
67.1 |
0.9 |
|
| 13 |
63.9 |
20 |
64.2 |
67.0 |
0.8 |
|
| 12 |
63.6 |
22 |
64.6 |
67.1 |
0.9 |
|
| *The
difference between the cumulative noise level under future operation and the
noise level at existing pad |
|
| under
the current maximum allowable no. of helicopter movements (i.e. 66.2 dB(A)
under 22 movements) |
|
|
| Summary of Future
Allowable Helicopter Flight Schedule during 1900 - 2300 hours |
|
|
| Scenario |
No. of movements at Existing pad |
No. of movements at New pad |
No. of movements allowable during
future operation |
| 1 |
22 or less |
7 or less |
29 or less |
| 2 |
21 or less |
9 or less |
30 or less |
| 3 |
20 or less |
10 or less |
30 or less |
| 4 |
19 or less |
12 or less |
31 or less |
| 5 |
18 or less |
13 or less |
31 or less |
| 6 |
17 or less |
15 or less |
32 or less |
| 7 |
16 or less |
16 or less |
32 or less |
| 8 |
15 or less |
18 or less |
33 or less |
| 9 |
14 or less |
19 or less |
33 or less |
| 10 |
13 or less |
20 or less |
33 or less |
| 11 |
12 or less |
22 or less |
34 or less |
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