APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: June 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.

 

(%)

6/6/2022

33

43

21

17

27.0

230

83

12/6/2022

27

31

22

14

27.5

220

84

18/6/2022

26

22

16

13

27.3

200

81

24/6/2022

20

32

11

11

10.7

220

73

30/6/2022

15

16

16

10

31.9

80

82

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

6/6/2022

15:00 - 15:59

22

43

21

16:00 - 16:59

24

35

24

17:00 - 17:59

33

43

28

12/6/2022

15:00 - 15:59

28

36

24

16:00 - 16:59

30

34

23

17:00 - 17:59

28

31

21

18/6/2022

15:00 - 15:59

54

26

18

16:00 - 16:59

30

23

16

17:00 - 17:59

22

23

17

24/6/2022

15:00 - 15:59

20

31

12

16:00 - 16:59

20

32

13

17:00 - 17:59

24

31

12

30/6/2022

15:00 - 15:59

11

15

11

16:00 - 16:59

16

13

13

17:00 - 17:59

9

15

11

                                                         

                                                                         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