APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: December 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.

 

(%)

3/12/2022

5

 

49

49

36

54

15.3

10

73

9/12/2022

67

56

45

65

21.3

10

67

15/12/2022

13

12

10

58

24.3

30

91

21/12/2022

56

75

34

65

27.0

360

46

27/12/2022

48

32

39

35

35.1

70

70

 

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

3/12/2022

15:00 - 15:59

70

81

53

16:00 - 16:59

72

70

55

17:00 - 17:59

66

55

54

9/12/2022

15:00 - 15:59

91

82

54

16:00 - 16:59

82

77

54

17:00 - 17:59

112

56

66

15/12/2022

15:00 - 15:59

26

39

18

16:00 - 16:59

23

34

18

17:00 - 17:59

33

19

17

21/12/2022

15:00 - 15:59

73

76

49

16:00 - 16:59

58

64

36

17:00 - 17:59

43

51

36

27/12/2022

15:00 - 15:59

46

27

33

16:00 - 16:59

40

30

36

17:00 - 17:59

58

37

39

                                                         

                                                                         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