APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: May 2002

 

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.

 

(%)

05/05/2002

32

35

30

47

24.5

090

79

11/05/2002

69

50

44

64

9.4

220

79

17/05/2002

20

19

17

25

16.9

060

89

23/05/2002

78

84

61

60

15.1

010

80

29/05/2002

40

38

38

43

14.4

050

77

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

05/05/2002

15:00-15:59

31

33

31

16:00-16:59

31

37

29

17:00-17:59

37

42

36

11/05/2002

15:00-15:59

57

44

41

16:00-16:59

91

98

89

17:00-17:59

117

119

113

17/05/2002

15:00-15:59

62

29

24

16:00-16:59

23

23

19

17:00-17:59

21

20

23

23/05/2002

15:00-15:59

136

135

133

16:00-16:59

76

76

78

17:00-17:59

37

47

45

29/05/2002

15:00-15:59

26

27

21

16:00-16:59

28

24

27

17:00-17:59

25

26

28

Remark:

(1)                 The monitoring stations, Reservoir, East Gate & Ash Lagoon are located within Lamma Power Station.

 

 

                                                                        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 G.

 

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