APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: May 2006

 

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.

 

(%)

02/05/2006

30

30

27

32

24.8

240

86

08/05/2006

25

29

20

26

15.1

190

79

14/05/2006

86

66

62

61

29.2

010

69

20/05/2006

41

35

41

74

27.3

080

85

26/05/2006

25

30

18

22

22.3

230

80

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

02/05/2006

15:00-15:59

28

40

*

16:00-16:59

29

32

*

17:00-17:59

35

38

*

03/05/2006

15:00-15:59

-

-

5

16:00-16:59

-

-

16

17:00-17:59

-

-

14

08/05/2006

15:00-15:59

30

36

12

16:00-16:59

18

27

13

17:00-17:59

13

17

11

14/05/2006

15:00-15:59

44

53

44

16:00-16:59

52

58

50

17:00-17:59

37

47

38

20/05/2006

15:00-15:59

41

39

37

16:00-16:59

41

41

40

17:00-17:59

44

43

42

26/05/2006

15:00-15:59

20

38

16

16:00-16:59

18

38

20

17:00-17:59

22

39

21

 

* -     Missing data was due to failure of 1-hr TEOM TSP sampler at AM3 (Ash Lagoon) on 02/05/2006.  Make-up 1-hr TSP sampling was conducted on 03/05/2006.

 

 

                                                                        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