| Restricted Hours Noise Monitoring Results (Night-time) | |||||||||||||
| Station NM6 Customs' Marine Base (Block H of Government Dockyard) Rooftop | |||||||||||||
| Date | Start Time | End Time | Weather | Noise level (dB(A)), 5 min+ | Major Construction Noise Source(s) Observed | Other Noise Source(s) Observed | Remarks | Mean Temp. (°C) | Mean Wind Speed (m/s) | Noise Meter Model / ID | Calibrator Model / ID | ||
| Leq | L10 | L90 | |||||||||||
| 01-Mar-10 | 23:02 | 23:07 | Fine | 58 | 59 | 57 | excavation in process | occasional noise from FSD Diving Rescue and Diving Training Centre | - | 22.1 | <5 m/s | B&K 2238 | B&K 4231 |
| 23:07 | 23:12 | Fine | 58 | 59 | 57 | ||||||||
| 23:12 | 23:17 | Fine | 58 | 59 | 57 | ||||||||
| 12-Mar-10 | 23:03 | 23:08 | Fine | 61 | 62 | 61 | general tidy-up works by workers was undertaking | engine noise from barge anchored at nearby piers | - | 16.8 | <5 m/s | B&K 2238 | B&K 4231 |
| 23:08 | 23:13 | Fine | 61 | 62 | 61 | ||||||||
| 23:13 | 23:18 | Fine | 61 | 62 | 61 | ||||||||
| 18-Mar-10 | 23:02 | 23:07 | Fine | 65 | 66 | 65 | excavation in process | engine noise from barge anchored at nearby piers; traffic noise from aircrafts passing by and from nearby piers | - | 20.9 | <5 m/s | B&K 2238 | B&K 4231 |
| 23:07 | 23:12 | Fine | 66 | 67 | 65 | ||||||||
| 23:12 | 23:17 | Fine | 66 | 66 | 65 | ||||||||
| 24-Mar-10 | 23:00 | 23:05 | Fine | 67 | 68 | 66 | excavation in process | chiller located at rooftop of Customs' Marine Base (which is not operating during the past measurement); traffic noise from aircrafts passing by and nearby piers | - | 24.4 | <5 m/s | B&K 2238 | B&K 4231 |
| 23:05 | 23:10 | Fine | 67 | 68 | 67 | ||||||||
| 23:10 | 23:15 | Fine | 67 | 68 | 66 | ||||||||
| 30-Mar-10 | 23:00 | 23:05 | Fine | 64 | 65 | 64 | excavation in process | traffic noise from aircrafts passing by and nearby piers | - | 19 | <5 m/s | B&K 2238 | B&K 4231 |
| 23:05 | 23:10 | Fine | 64 | 65 | 63 | ||||||||
| 23:10 | 23:15 | Fine | 64 | 65 | 63 | ||||||||
| Min. | 58 | ||||||||||||
| Max. | 67 | ||||||||||||