APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: September 2003

 

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.

 

(%)

03/09/2003

32

46

26

25

36.0

100

90

09/09/2003

25

28

23

6

12.0

060

82

15/09/2003

21

38

22

7

35.3

120

95

21/09/2003

58

48

46

33

13.1

010

80

27/09/2003

41

40

41

40

21.8

080

76

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

03/09/2003

15:00-15:59

38

43

36

16:00-16:59

33

38

32

17:00-17:59

16

23

14

09/09/2003

15:00-15:59

27

39

25

16:00-16:59

24

21

19

17:00-17:59

37

38

34

15/09/2003

15:00-15:59

9

18

16

16:00-16:59

10

23

16

17:00-17:59

19

38

20

21/09/2003

15:00-15:59

46

64

64

16:00-16:59

29

29

28

17:00-17:59

48

49

53

27/09/2003

15:00-15:59

47

43

45

16:00-16:59

40

39

41

17:00-17:59

50

49

47

 

Remark:

(1)                 The monitoring stations, Reservoir, East Gate & Ash Lagoon are located within Lamma Power Station.

 

                                                                        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 1400a

High Volume Air Sampler

Ash Lagoon

Partisol Model 2000 Sampler

Tai Yuen Village

-

MINIVOL Portable Sampler