Night time Noise Monitoring Results
Station M5a, Chuk Lam Ming Tong(near entrance)
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
11/09/2014-a 23:00 23:05 Fine 63 64 52 No major construction workd on surface Traffic noise at San Wan Drive  N.A 30.3 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
11/09/2014-b 23:05 23:10 Fine 65 67 52 No major construction workd on surface 30.3 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
11/09/2014-c 23:10 23:15 Fine 66 68 52 No major construction workd on surface 30.3 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
11-Sep-14 23:00 23:15 Fine 65 66 52 No major construction workd on surface Traffic noise at San Wan Drive  N.A 30.3 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
30/09/2014-a 23:00 23:05 Fine 62 63 53 Loading works under the shaft inside noise enclosure Traffic noise at San Wan Drive  N.A 29.6 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
30/09/2014-b 23:05 23:10 Fine 64 65 53 Loading works under the shaft inside noise enclosure 29.6 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
30/09/2014-c 23:10 23:15 Fine 61 63 53 Loading works under the shaft inside noise enclosure 29.6 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
30-Sep-14 23:00 23:15 Fine 62 64 53 Loading works under the shaft inside noise enclosure Traffic noise at San Wan Drive  N.A 29.6 <5 B&K 2238   S/N : 2684503 B&K 4231  S/N: 3004068
      Max 66
Min 61
Average 64