APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: November 2023

 

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.

 

(%)

4/11/2023

26

28

22

11

15.2

70

76

10/11/2023

34

36

25

26

19.2

70

82

16/11/2023

82

65

45

57

35.0

360

65

22/11/2023

35

33

28

19

14.4

80

73

28/11/2023

54

50

39

17

27.7

70

61

 

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

4/11/2023

15:00 - 15:59

25

27

22

16:00 - 16:59

33

26

20

17:00 - 17:59

13

35

19

10/11/2023

15:00 - 15:59

36

42

25

16:00 - 16:59

33

31

26

17:00 - 17:59

30

31

25

16/11/2023

15:00 - 15:59

48

58

42

16:00 - 16:59

54

54

47

17:00 - 17:59

52

55

49

22/11/2023

15:00 - 15:59

37

31

28

16:00 - 16:59

37

33

30

17:00 - 17:59

30

32

30

28/11/2023

15:00 - 15:59

61

60

48

16:00 - 16:59

65

57

39

17:00 - 17:59

58

54

31

                                                         

                                                                         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