APPENDIX D AIR QUALITY MONITORING RESULTS
Site: Lamma Power
Station Extension
Month: August 2003
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. (%) |
|
|
04/08/2003 |
41 |
65 |
20 |
21 |
22.9 |
230 |
79 |
|
10/08/2003 |
27 |
27 |
17 |
15 |
15.3 |
230 |
77 |
|
16/08/2003 |
23 |
24 |
28 |
19 |
7.8 |
060 |
87 |
|
22/08/2003 |
20 |
24 |
28 |
(2) |
17.5 |
110 |
91 |
|
28/08/2003 |
28 |
25 |
18 |
38 |
10.9 |
160 |
77 |
1 hour TSP Measurement:-
|
Date |
Time |
TSP concentration (mg/m3) |
||
|
Reservoir (AM1) |
East Gate (AM2) |
Ash Lagoon (AM3) |
||
|
04/08/2003 |
15:00-15:59 |
28 |
93 |
26 |
|
16:00-16:59 |
42 |
108 |
23 |
|
|
17:00-17:59 |
41 |
84 |
25 |
|
|
10/08/2003 |
15:00-15:59 |
26 |
27 |
16 |
|
16:00-16:59 |
20 |
26 |
21 |
|
|
17:00-17:59 |
31 |
37 |
28 |
|
|
16/08/2003 |
15:00-15:59 |
17 |
17 |
11 |
|
16:00-16:59 |
3 |
6 |
8 |
|
|
17:00-17:59 |
10 |
6 |
10 |
|
|
22/08/2003 |
15:00-15:59 |
18 |
22 |
21 |
|
16:00-16:59 |
13 |
13 |
15 |
|
|
17:00-17:59 |
15 |
17 |
16 |
|
|
28/08/2003 |
15:00-15:59 |
26 |
24 |
18 |
|
16:00-16:59 |
20 |
23 |
19 |
|
|
17:00-17:59 |
23 |
28 |
25 |
|
Remark:
(1)
The monitoring stations, Reservoir, East Gate
& Ash Lagoon are located within Lamma Power Station.
(2)
The 24 hour TSP sample at AM4 on 22/8/2003
was void due to the breakdown of TSP Sampler, identified during the collection
filter paper on 26/8/2003, the first working day after weekend and typhoon Krovanh. The defect was rectified on
27/8/2003. As the next sampling
was scheduled on 28/8/2003, no make-up sampling can be arranged.
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 |