APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: September 2005

 

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.

 

(%)

04/09/2005

25

28

25

28

25.9

090

93

10/09/2005

112

110

101

115

12.6

030

77

16/09/2005

40

38

42

46

24.8

070

76

22/09/2005

137

126

130

113

19.1

010

68

28/09/2005

52

50

94

76

20.7

090

85

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

04/09/2005

15:00-15:59

16

16

12

16:00-16:59

28

30

25

17:00-17:59

30

28

21

10/09/2005

15:00-15:59

120

188

110

16:00-16:59

126

153

112

17:00-17:59

116

129

107

16/09/2005

15:00-15:59

31

47

32

16:00-16:59

18

40

6

17:00-17:59

26

37

32

22/09/2005

15:00-15:59

151

146

123

16:00-16:59

78

83

98

17:00-17:59

108

109

101

28/09/2005

15:00-15:59

63

64

41

16:00-16:59

55

57

57

17:00-17:59

60

66

59

 

 

                                                                        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