APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: July 2017

 

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.

 

(%)

03/07/2017

25

35

18

49

22.8

200

83

09/07/2017

28

40

16

44

19.1

190

81

15/07/2017

7

21

12

17

26.8

90

84

21/07/2017

19

19

11

15

29.7

80

81

27/07/2017

19

23

20

11

28.6

80

80

 

 

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

03/07/2017

15:00 - 15:59

16

51

28

16:00 - 16:59

20

30

21

17:00 - 17:59

16

24

0

09/07/2017

15:00 - 15:59

28

24

0

16:00 - 16:59

24

31

29

17:00 - 17:59

19

40

55

15/07/2017

15:00 - 15:59

6

20

4

16:00 - 16:59

14

22

24

17:00 - 17:59

10

19

2

21/07/2017

15:00 - 15:59

18

13

23

16:00 - 16:59

18

15

24

17:00 - 17:59

25

16

24

27/07/2017

15:00 - 15:59

25

19

23

16:00 - 16:59

17

18

22

17:00 - 17:59

22

19

21

 

 

                                                                        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 and East Gate

TEOM

High Volume Air Sampler

Ash Lagoon

TEOM

TEOM

Tai Yuen Village

-

MINIVOL Portable Sampler