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)
5-Jun-09 9:16 79.5 81.1 77.7
11-Jun-09 10:51 70.0 72.3 71.5
17-Jun-09 13:28 82.6 81.7 83.2
23-Jun-09 10:00 72.1 73.3 73.8
29-Jun-09 9:29 80.0 77.4 78.4
Min 70.0
Max 83.2
77.0
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)
5-Jun-09 9:05 74.5 73.7 75.2
11-Jun-09 10:40 68.3 69.5 70.6
17-Jun-09 13:15 80.1 81.2 79.5
23-Jun-09 9:50 71.5 71.0 72.8
29-Jun-09 9:18 78.3 77.3 76.1
Min 68.3
Max 81.2
74.6