APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: June 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.

 

(%)

05/06/2003

59

53

53

56

11.7

100

78

11/06/2003

39

40

43

32

28.6

230

91

17/06/2003

65

69

73

63

13.4

020

68

23/06/2003

(2)

21

17

18

18.8

190

79

25/06/2003

73

-

-

-

29.0

200

77

29/06/2003

33

28

18

14

23.5

190

75

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

05/06/2003

15:00-15:59

58

48

60

16:00-16:59

68

59

69

17:00-17:59

68

61

67

11/06/2003

15:00-15:59

(3)

10

13

16:00-16:59

(3)

16

17

17:00-17:59

(3)

16

8

12/06/2003

15:00-15:59

18

-

-

16:00-16:59

17

-

-

17:00-17:59

7

-

-

17/06/2003

15:00-15:59

90

100

97

16:00-16:59

95

105

96

17:00-17:59

86

70

83

23/06/2003

15:00-15:59

45

16

15

16:00-16:59

19

14

13

17:00-17:59

38

26

24

29/06/2003

15:00-15:59

10

24

14

16:00-16:59

39

18

13

17:00-17:59

20

12

16

 

Remark:

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

(2)                 24-hr TSP sampler at AM1 (Reservoir) was found defective during the collection of filter paper on 24/6/2003. The defective part was replaced on the same day.  A make-up 24-hr TSP sampling for AM1 was carried out on 25/6/2003.

(3)                 TEOM 1-hr TSP sampler at AM1 (Reservoir) tripped on 11/6/2003.  A make-up 1hr TSP sampling for AM1 was carried out on 12/6/2003.

 

 

 

 

 

 

 

 

                                                                        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