APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: February 2005

 

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.

 

(%)

06/02/2005

23

41

32

47

18.8

060

93

12/02/2005

47

44

46

54

26.4

070

80

18/02/2005

80

80

59

56

25.9

010

85

24/02/2005

66

50

81

72

7.0

030

93

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

06/02/2005

15:00-15:59

43

34

35

16:00-16:59

36

21

43

17:00-17:59

24

24

16

12/02/2005

15:00-15:59

48

41

51

16:00-16:59

52

46

32

17:00-17:59

51

44

24

18/02/2005(1)

15:00-15:59

36

43

87 (19/2)

16:00-16:59

48

55

51 (19/2)

17:00-17:59

51

52

52 (19/2)

24/02/2005

15:00-15:59

66

85

75

16:00-16:59

61

61

52

17:00-17:59

55

47

65

 

Remark:

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

(2)            TEOM 1-hr TSP sampler at AM3 (Ash Lagoon) was found defective on 18/02/2005.  A make-up 1hr TSP sampling for AM3 was carried out on 19/02/2005.

                                                                               

 

 

                                                                        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