APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: March 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.

 

(%)

03/03/2006

60

54

63

63

23.6

070

74

09/03/2006

94

68

74

85

8.3

030

87

15/03/2006

*

57

67

81

23.4

050

82

17/03/2006

82

-

-

-

18.3

030

91

21/03/2006

124

111

124

143

17.3

040

91

27/03/2006

50

42

41

54

21.5

040

96

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

03/03/2006

15:00-15:59

53

57

43

16:00-16:59

59

62

53

17:00-17:59

41

37

54

09/03/2006

15:00-15:59

76

78

56

16:00-16:59

96

83

58

17:00-17:59

113

91

66

15/03/2006

15:00-15:59

62

71

60

16:00-16:59

60

69

61

17:00-17:59

72

77

68

21/03/2006

15:00-15:59

117

120

120

16:00-16:59

142

144

146

17:00-17:59

161

152

165

27/03/2006

15:00-15:59

31

43

33

16:00-16:59

46

51

46

17:00-17:59

64

59

57

 

* - 24-hr TSP sampler at AM1 (Reservoir) was found defective on 16/03/2006, during the collection of filter sample. Defect was rectified on the same day.  A 24-hr TSP make-up sampling was conducted on 17/03/2006.                                                                                                                                                  

 

                                                                        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