| Table A5-1 Measured Noise Levels at the
Existing Ha Tsuen Sewage Pumping Station (LAeq,30min) |
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| Source |
Ha Tsuen - Louvre 1 |
Ha Tsuen - Louvre 2 |
Ha Tsuen - Exhaust 1 (1) |
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| Number of noise emission point |
1 |
1 |
2 |
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| Measured sound pressure level at 1m from
source, SPL |
81.3 |
81.3 |
70.8 |
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| Facade Correction |
-3.0 |
-3.0 |
0.0 |
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| Freefield SPL at 1m |
78.3 |
78.3 |
70.8 |
67608298 |
67608298 |
12022644 |
| Sum of measured SPLs |
81.7 |
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| Tonal Characteristic (2) |
3.0 |
6.0 |
0.0 |
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67608297.5 |
67608297.5 |
24045288.7 |
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| Estimated total SPL at Ha Tsuen PS = 85.1 dB(A) |
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81.7 |
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| (assuming louvres and exhaust are operating simultaneously) |
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| Notes |
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| (1) SPL of 70.8 dB(A) was measured at 4m from the exhaust |
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| (2) Tonal correction was identified according to the procedure
stipulated in the IND-TM. |
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