Appendix B Action
and Limit Levels for Air Quality and Noise Monitoring
Table B.1 Action
and Limit Levels for 1-hour and 24-hour TSP
|
Action Level, mg/m3 |
Limit Level, mg/m3 |
|
|
1-hour TSP* |
340 |
500 |
|
24-hour TSP |
190 |
260 |
T
No Action/Limit Level for 1-hour TSP is applied
to AM4 where no real time dust monitor is installed.
B.2. Noise
Table B.2 AL
Levels for
Construction Noise (Other than Percussive Piling)
|
Parameters |
Action |
Limit |
|
Noise Levels at the NSR's at Long Tsai Tsuen/Hung Shing Ye and school within the
village of Tai Wan San Tsuen predicted by the noise alarm monitoring system |
When one or more documented complaints are received |
a. 75 dB(A) in LAeq,30 min (07:00-19:00 hrs on
normal weekdays) (Note 1) b. subject to statutory control under
the Noise Control Ordinance (07:00-23:00 hrs
on holidays and 19:00-23:00
hrs on all other days). Set to 60 dB(A) in LAeq,5 min c. subject to statutory control
under the Noise Control Ordinance (23:00-07:00
hrs of next day). Set to 45 dB(A) in LAeq,5 min |
|
Manual noise monitoring at the nearest Pak Kok Tsui
residences to cable landing points N4 and N5 |
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|
Note: 1.
For educational
institution, the limit level shall be 70 dB(A), reduced to 65 dB(A) during
examination periods. |
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