APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: October 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.

 

(%)

03/10/2003

54

55

56

51

29.9

070

73

09/10/2003

37

38

33

36

36.8

070

77

15/10/2003

60

73

62

49

29.3

360

69

21/10/2003

84

85

87

79

13.4

090

68

27/10/2003

89

84

92

76

18.8

070

74

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

03/10/2003

15:00-15:59

65

79

68

16:00-16:59

69

75

66

17:00-17:59

45

41

42

09/10/2003

15:00-15:59

49

35

36

16:00-16:59

37

32

36

17:00-17:59

41

36

44

15/10/2003

15:00-15:59

62

92

62

16:00-16:59

68

89

72

17:00-17:59

56

75

59

21/10/2003

15:00-15:59

160

140

135

16:00-16:59

121

111

114

17:00-17:59

108

100

98

27/10/2003

15:00-15:59

111

109

122

16:00-16:59

120

125

99

17:00-17:59

136

120

130

 

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 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