| Restricted Hours Noise Monitoring Results -- Night time | |||||||||||||
| Station M8a, Near security room of Wah Lai House | |||||||||||||
| Date | Start Time | End Time | Weather | Noise level (dB(A)), 5 min | Major Construction Noise Source(s) Observed | Other Noise Source(s) Observed | Remarks | Temp. (°C) | Wind Speed (m/s) | Noise Meter Model / ID | Calibrator Model / ID | ||
| Leq | L10 | L90 | |||||||||||
| 03-Jul-13 | 23:00 | 23:15 | Fine | 61.6 | 64.0 | 54.7 | Tunnel worls | Road Traffic noise from Shek Pai Wan Road and cars from residents of Wah Lai House | Major noise source -- road traffic noise. | 29.7 | <5 | B&K 2238 S/N : 2381580 | B&K 4231 S/N: 3003246 |
| 31-Jul-13 | 23:00 | 23:15 | Fine | 63.7 | 63.9 | 55.1 | Tunnel worls | Road Traffic noise from Shek Pai Wan Road and cars from residents of Wah Lai House | Major noise source -- road traffic noise. | 29.4 | <5 | B&K 2238 S/N : 2381580 | B&K 4231 S/N: 3004068 |
| Min. | 61.6 | ||||||||||||
| Max. | 63.7 | ||||||||||||