APPENDIX D AIR QUALITY MONITORING RESULTS
Site: Lamma Power
Station Extension
Month: July 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. (%) |
|
|
05/07/2004 |
48 |
47 |
38 |
44 |
28.7 |
230 |
78 |
|
11/07/2004 |
(3) |
53 |
27 |
25 |
28.5 |
210 |
77 |
|
13/07/2004 |
27 |
- |
- |
- |
11.2 |
230 |
80 |
|
17/07/2004 |
20 |
32 |
22 |
6 |
17.2 |
160 |
92 |
|
23/07/2004 |
26 |
31 |
25 |
19 |
21.8 |
70 |
82 |
|
29/07/2004 |
17 |
28 |
19 |
24 |
18.2 |
110 |
96 |
1 hour TSP Measurement:-
|
Date |
Time |
TSP concentration (mg/m3) |
||
|
Reservoir (AM1) |
East Gate (AM2) |
Ash Lagoon (AM3) |
||
|
05/07/2004(2) |
15:00-15:59 |
34 (7/7) |
47 |
39 |
|
16:00-16:59 |
39
(7/7) |
43 |
39 |
|
|
17:00-17:59 |
41
(7/7) |
55 |
41 |
|
|
11/07/2004(3) |
15:00-15:59 |
28 (12/7) |
38 |
17 |
|
16:00-16:59 |
23 (12/7) |
45 |
28 |
|
|
17:00-17:59 |
18 (12/7) |
90 |
62 |
|
|
17/07/2004 |
15:00-15:59 |
28 |
28 |
33 |
|
16:00-16:59 |
20 |
30 |
30 |
|
|
17:00-17:59 |
11 |
13 |
15 |
|
|
23/07/2004 |
15:00-15:59 |
13 |
20 |
18 |
|
16:00-16:59 |
21 |
24 |
30 |
|
|
17:00-17:59 |
37 |
31 |
36 |
|
|
29/07/2004 |
15:00-15:59 |
7 |
12 |
12 |
|
16:00-16:59 |
16 |
17 |
12 |
|
|
17:00-17:59 |
11 |
16 |
14 |
|
Remark:
(1)
The monitoring stations, Reservoir, East Gate
& Ash Lagoon are located within Lamma Power Station.
(2)
TEOM 1-hr TSP sampler at AM1 (Reservoir)
defected on 05/07/2004. A make-up
1hr TSP sampling for AM1 was carried out on 07/07/2004.
(3)
Both 1-hr & 24-hr TSP sampling at AM1
(Reservoir) were suspended due to the failure of power supply. Make-up sampling for 1-hr & 24-hr
TSP sampling at AM1 was conducted on 12/07/2004 and 13/07/2004 respectively.
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 |