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)
4-Jul-09 9:17 71.2 68.7 68.1
10-Jul-09 10:15 80.7 82.2 83.5
16-Jul-09 10:16 79.1 81.4 82.5
22-Jul-09 11:09 81.5 80.8 82.3
28-Jul-09 10:27 84.1 85.2 86.3
Min 68.1
Max 86.3
79.8
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)
4-Jul-09 9:08 67.2 66.3 68.4
10-Jul-09 10:01 81.0 81.8 80.0
16-Jul-09 10:08 75.1 75.9 76.9
22-Jul-09 11:02 80.5 81.4 79.7
28-Jul-09 10:09 82.4 81.3 83.8
Min 66.3
Max 83.8
77.4