APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: April 2024

 

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.

 

(%)

2/4/2024

61

51

25

19

20.3

160

80

8/4/2024

28

40

20

28

12.6

30

87

14/4/2024

30

31

18

58

9.1

130

78

20/4/2024

10

35

22

15

3.8

60

90

26/4/2024

23

35

21

6

25.9

220

88

 

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

2/4/2024

15:00 - 15:59

45

63

29

16:00 - 16:59

46

67

30

17:00 - 17:59

46

64

29

8/4/2024

15:00 - 15:59

31

33

17

16:00 - 16:59

32

42

22

17:00 - 17:59

32

50

21

14/4/2024

15:00 - 15:59

37

32

17

16:00 - 16:59

37

35

17

17:00 - 17:59

37

35

17

20/4/2024

15:00 - 15:59

49

47

30

16:00 - 16:59

50

52

31

17:00 - 17:59

51

52

32

26/4/2024

15:00 - 15:59

19

53

25

16:00 - 16:59

19

47

26

17:00 - 17:59

20

42

26

                                                         

                                                                         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