APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: September 2022

 

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.

 

(%)

4/9/2022

66

33

50

39

13.7

360

55

10/9/2022

66

48

47

33

11.0

70

76

16/9/2022

72

54

61

57

7.9

250

63

22/9/2022

44

22

41

22

24.8

80

73

28/9/2022

30

13

20

13

49.1

80

 

73

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

4/9/2022

15:00 - 15:59

72

39

50

16:00 - 16:59

56

31

47

17:00 - 17:59

60

28

57

10/9/2022

15:00 - 15:59

64

44

43

16:00 - 16:59

79

46

51

17:00 - 17:59

78

46

55

16/9/2022

15:00 - 15:59

107

67

85

16:00 - 16:59

92

56

75

17:00 - 17:59

84

53

64

22/9/2022

15:00 - 15:59

43

24

41

16:00 - 16:59

44

20

37

17:00 - 17:59

38

19

37

28/9/2022

15:00 - 15:59

26

15

21

16:00 - 16:59

26

14

21

17:00 - 17:59

26

13

21

                                                         

                                                                         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, East Gate and Ash Lagoon

TEOM

TEOM

Tai Yuen Village

-

MINIVOL Portable Sampler