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)
6-Oct-09 10:48 67.0 65.6 69.1
12-Oct-09 11:49 61.8 63.4 60.4
17-Oct-09 11:23 73.0 71.1 69.0
23-Oct-09 14:19 79.6 81.3 82.2
29-Oct-09 9:23 86.0 85.0 81.8
Min 60.4
Max 86.0
73.1
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)
6-Oct-09 10:35 66.9 63.0 64.0
12-Oct-09 11:35 62.6 60.5 60.1
17-Oct-09 11:10 69.7 68.6 67.3
23-Oct-09 14L05 82.2 85.6 79.2
29-Oct-09 9:11 79.9 81.0 78.4
Min 60.1
Max 85.6
71.3