Impact Air Quality Monitoring Results 
1-hour TSP Monitoring Results at Station CA1 (Po Shan Mansions)
Date Start 1st Hour 2nd Hour 3rd Hour
Time Conc. Conc. Conc.
(hh:mm) (µg/m3) (µg/m3) (µg/m3)
3-Aug-09 10:09 75.8 75.1 74.3
8-Aug-09 10:35 78.6 77.4 76.0
14-Aug-09 14:05 67.8 68.9 69.9
20-Aug-09 10:25 53.4 56.2 56.9
26-Aug-09 9:49 64.6 66.6 64.8
Min 53.4
Max 78.6
68.4
1-hour TSP Monitoring Results at Station CA2 (Hamilton Court)
Date Start 1st Hour 2nd Hour 3rd Hour
Time Conc. Conc. Conc.
(hh:mm) (µg/m3) (µg/m3) (µg/m3)
3-Aug-09 10:00 72.3 73.0 72.2
8-Aug-09 10:22 73.3 71.1 72.1
14-Aug-09 13:40 65.7 66.8 66.4
20-Aug-09 10:03 63.3 60.2 58.9
26-Aug-09 9:30 64.1 60.2 62.9
Min 58.9
Max 73.3
66.8