APPENDIX D AIR QUALITY MONITORING RESULTS
Site: Lamma Power
Station Extension
Month: May 2005
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. (%) |
|
|
01/05/2005 |
31 |
27 |
24 |
36 |
23.9 |
200 |
82 |
|
07/05/2005 |
53 |
51 |
50 |
74 |
20.0 |
080 |
77 |
|
13/05/2005 |
41 |
51 |
26 |
39 |
22.0 |
220 |
81 |
|
19/05/2005 |
24 |
42 |
24 |
24 |
19.5 |
090 |
92 |
|
25/05/2005 |
(2) |
42 |
27 |
29 |
22.8 |
090 |
87 |
|
27/05/2005 |
32 |
- |
- |
- |
14.0 |
110 |
92 |
|
31/05/2005 |
28 |
36 |
24 |
35 |
16.0 |
080 |
83 |
1 hour TSP Measurement:-
|
Date |
Time |
TSP concentration (mg/m3) |
||
|
Reservoir (AM1) |
East Gate (AM2) |
Ash Lagoon (AM3) |
||
|
01/05/2005 |
15:00-15:59 |
30 |
29 |
29 |
|
16:00-16:59 |
30 |
34 |
27 |
|
|
17:00-17:59 |
28 |
28 |
26 |
|
|
07/05/2005 |
15:00-15:59 |
61 |
52 |
63 |
|
16:00-16:59 |
61 |
55 |
60 |
|
|
17:00-17:59 |
63 |
61 |
65 |
|
|
13/05/2005 |
15:00-15:59 |
39 |
302 |
36 |
|
16:00-16:59 |
43 |
46 |
32 |
|
|
17:00-17:59 |
47 |
164 |
34 |
|
|
19/05/2005 |
15:00-15:59 |
8 |
34 |
12 |
|
16:00-16:59 |
12 |
58 |
14 |
|
|
17:00-17:59 |
15 |
45 |
15 |
|
|
25/05/2005 |
15:00-15:59 |
24 |
41 |
30 |
|
16:00-16:59 |
30 |
39 |
32 |
|
|
17:00-17:59 |
28 |
33 |
35 |
|
|
31/05/2005 |
15:00-15:59 |
20 |
24 |
18 |
|
16:00-16:59 |
23 |
22 |
22 |
|
|
17:00-17:59 |
24 |
26 |
27 |
|
Remark:
(1)
The monitoring stations, Reservoir, East Gate
& Ash Lagoon are located within Lamma Power Station.
(2)
HVAS 24-hr TSP sampler at AM1 (Reservoir) was
found defective on 26/05/2005, during the collection of filter sample. Defect was rectified on the same
day. A make-up 24-hr TSP sampling
for AM1 was carried out on 27/05/2005.
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 |