| Restricted Hours Noise Monitoring Results -- Daytime on Public Holiday | |||||||||||||
| Station M3, Kwan Yick building | |||||||||||||
| 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 | |||||||||||
| 08-Jan-12 | 16:00 | 16:15 | Fine | 66 | 68 | 64 | Breaker | Mainly traffic noise | - | 17.0 | 0.5 | RION- NL31 (S/N 00603867) | RION - NC73 (S/N 10997142) |
| 15-Jan-12 | 11:35 | 11:50 | Cloudy | 68 | 69 | 67 | Operation of excavator and loading | Mainly traffic noise | - | 17.2 | <5 | B&K 2238 S/N: 2684502 | B&K 4231 S/N: 2656516 |
| 22-Jan-12 | 09:56 | 10:11 | Cloudy | 64 | 66 | 62 | No outdoor construction noise | Mainly traffic noise | - | 17.0 | 1.3 | RION- NL31 (S/N 00603867) | RION - NC73 (S/N 10997142) |
| Min. | 64 | ||||||||||||
| Max. | 68 | ||||||||||||
| Restricted Hours Noise Monitoring Results -- Evening time | |||||||||||||
| Station M3, Kwan Yick building | |||||||||||||
| 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 | |||||||||||
| 27-Jan-12 | 22:45 | 23:00 | Foggy | 67 | 68 | 64 | No major construction works | Road traffic noise from Western Harbour Crossing, engine of turbojet and digging process at sea near the tunnel. | N.A | 14.7 | <5 | B&K 2238 S/N : 2684502 | B&K 4231 S/N: 2656516 |
| 29-Nov-11 | 19:00 | 19:15 | Fine | 69 | 70 | 67 | Rock out and loading | Road traffic noise from Western Harbour Crossing, engine of turbojet, planes and helicopter overhead. | N.A | 22.7 | <5 | B&K 2238 S/N : 2684502 | B&K 4231 S/N: 2385180 |
| Min. | 67 | ||||||||||||
| Max. | 69 | ||||||||||||