APPENDIX D AIR QUALITY MONITORING RESULTS
Site: Lamma Power
Station Extension
Month: August 2004
24 hour TSP
Measurement:-
|
Date |
TSP concentration (mg/m3) |
Weather Information (From Hong Kong Observatory) |
|||||
|
Reservoir (AM1) |
East Gate (AM2) |
Ash Lagoon (AM3) |
Tai Yuen Village (AM4) |
Mean Wind Speed (km/hr) |
Prevailing Wind Dir. (°) |
Mean R.H. (%) |
|
|
04/08/2004 |
28 |
42 |
17 |
24 |
13.5 |
240 |
78 |
|
10/08/2004 |
84 |
99 |
79 |
78 |
9.7 |
260 |
72 |
|
16/08/2004 |
25 |
53 |
24 |
15 |
8.6 |
130 |
75 |
|
22/08/2004 |
15 |
65 |
31 |
22 |
12.6 |
050 |
93 |
|
28/08/2004 |
28 |
(2) |
23 |
13 |
22.5 |
170 |
92 |
|
31/08/2004 |
- |
42 |
- |
- |
17.5 |
210 |
88 |
1 hour TSP Measurement:-
|
Date |
Time |
TSP concentration (mg/m3) |
||
|
Reservoir (AM1) |
East Gate (AM2) |
Ash Lagoon (AM3) |
||
|
04/08/2004 |
15:00-15:59 |
28 |
47 |
30 |
|
16:00-16:59 |
37 |
36 |
27 |
|
|
17:00-17:59 |
32 |
28 |
21 |
|
|
10/08/2004 |
15:00-15:59 |
128 |
135 |
108 |
|
16:00-16:59 |
163 |
170 |
137 |
|
|
17:00-17:59 |
114 |
128 |
87 |
|
|
16/08/2004 |
15:00-15:59 |
24 |
65 |
24 |
|
16:00-16:59 |
37 |
56 |
30 |
|
|
17:00-17:59 |
52 |
23 |
26 |
|
|
22/08/2004 |
15:00-15:59 |
6 |
13 |
1 |
|
16:00-16:59 |
16 |
19 |
18 |
|
|
17:00-17:59 |
0 |
12 |
7 |
|
|
28/08/2004 |
15:00-15:59 |
2 |
37 |
13 |
|
16:00-16:59 |
0 |
25 |
0 |
|
|
17:00-17:59 |
12 |
37 |
15 |
|
Remark:
(1)
The monitoring stations, Reservoir, East Gate
& Ash Lagoon are located within Lamma Power Station.
(2)
24-hr TSP sampling at AM2 (East Gate) was
found defective during the collection of filter paper on 30/8/2004. Defect was
rectified on the same day. Make-up
TSP sampling at AM2 was conducted on 31/08/2004.
1-hr
TSP 24-hr
TSP
(mg/m3) (mg/m3)
Action Level 340 190
Limit Level 500 260
Calibration: Calibration
details are shown in appendix F.
Equipment used:
|
Location |
1-hr TSP |
24-hr TSP |
|
Reservoir and East Gate |
TEOM 1400a |
High Volume Air Sampler |
|
Ash Lagoon |
Partisol Model 2000 Sampler |
|
|
Tai Yuen Village |
- |
MINIVOL Portable Sampler |