APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: April 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.

 

(%)

06/04/2003

67

65

65

53

36.8

070

78

12/04/2003

27

28

39

19

22.3

180

86

18/04/2003

31

33

28

42

19.2

110

89

24/04/2003

33

40

27

28

17.7

220

77

30/04/2003

78

38

78

64

26.2

010

71

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

06/04/2003

15:00-15:59

78

73

83

16:00-16:59

75

71

79

17:00-17:59

67

67

68

12/04/2003

15:00-15:59

26

23

16

16:00-16:59

23

21

15

17:00-17:59

26

23

18

18/04/2003

15:00-15:59

34

35

38

16:00-16:59

37

37

38

17:00-17:59

37

37

37

24/04/2003

15:00-15:59

17

38

17

16:00-16:59

29

43

20

17:00-17:59

41

56

29

30/04/2003

15:00-15:59

102

95

102

16:00-16:59

85

77

81

17:00-17:59

82

76

81

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