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