Daytime Noise Monitoring Results -- Normal weekday | |||||||||||||
Station M7a, Wah Ming House | |||||||||||||
Date | Start Time | End Time | Weather | Noise level (dB(A)), 30 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 | |||||||||||
04-Oct-10 | 15:18 | 15:48 | Sunny | 66 | 67 | 64 | Rock Excavation | N.A | N.A | 25.5 | <5 | B&K 2238 S/N : 2684503 | B&K 4231 S/N: 2656516 |
12-Oct-10 | 13:10 | 13:40 | Fine | 68 | 72 | 61 | Rock Excavation | N.A | N.A | 27.6 | <5 | B&K 2238 S/N : 2684503 | B&K 4231 S/N: 2656516 |
18-Oct-10 | 10:40 | 11:10 | Sunny | 69 | 72 | 61 | Operation of breaker | N.A | N.A | 31.0 | <5 | B&K 2238 S/N : 2381580 | B&K 4231 S/N: 2385180 |
28-Oct-10 | 09:33 | 10:03 | Sunny | 68 | 73 | 61 | Loading activities | N.A | N.A | 18.7 | <5 | B&K 2238 S/N : 2684503 | B&K 4231 S/N: 2656516 |
Min. | 66 | ||||||||||||
Max. | 69 |