APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: May 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.

 

(%)

06/05/2003

28

27

21

21

30.2

190

84

12/05/2003

38

37

38

40

20.2

080

86

18/05/2003

50

51

51

40

18.0

020

88

24/05/2003

25

27

28

25

11.6

130

81

30/05/2003

111

106

109

88

11.0

090

77

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

06/05/2003

15:00-15:59

21

23

20

16:00-16:59

24

33

28

17:00-17:59

24

35

29

12/05/2003

15:00-15:59

44

42

44

16:00-16:59

39

35

38

17:00-17:59

38

36

39

18/05/2003

15:00-15:59

91

82

83

16:00-16:59

69

58

70

17:00-17:59

17

7

18

24/05/2003

15:00-15:59

22

22

19

16:00-16:59

18

18

15

17:00-17:59

27

24

20

30/05/2003

15:00-15:59

121

120

110

16:00-16:59

129

98

103

17:00-17:59

106

91

89

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