APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: June 2019

 

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.

 

(%)

5/6/2019

14

17

12

17 (7/6)

14.5

190

82

11/6/2019

27

35 (14/6)

22

7

11.8

220

91

17/6/2019

26

26

20

14

26.2

090

88

23/6/2019

26

39

19

26

30.4

230

80

29/6/2019

26

32

22

8

21.6

190

79

Remarks:              Equipment failed at AM4 on 5/6/2019 and make up sampling conducted on 7/6/2019.

                                Equipment failed at AM2 on 11/6/2019 and make up sampling conducted on 14/6/2019.

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

5/6/2019

15:00 - 15:59

14

20

10

16:00 - 16:59

16

17

10

17:00 - 17:59

17

15

10

11/6/2019

15:00 - 15:59

14

45 (14/6)

11

16:00 - 16:59

14

46 (14/6)

16

17:00 - 17:59

24

43 (14/6)

13

17/6/2019

15:00 - 15:59

23

23

19

16:00 - 16:59

26

24

19

19

17:00 - 17:59

30

19

8

23/6/2019

15:00 - 15:59

26

39

20

16:00 - 16:59

29

39

25

17:00 - 17:59

29

56

22

29/6/2019

15:00 - 15:59

22

34

27

16:00 - 16:59

13

33

23

17:00 - 17:59

4

33

20

    Remarks:          Equipment failed at AM2 on 11/6/2019 and make up sampling conducted on 14/6/2019.                                                      

 

 

 

 

 

 

 

 

 

                                                                         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