APPENDIX D  AIR QUALITY MONITORING RESULTS

 

Site: Lamma Power Station Extension

 

Month: July 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.

 

(%)

05/07/2003

25

33

15

8

15.4

220

70

11/07/2003

21

16

11

8

26.1

150

82

17/07/2003

24

33

18

11

21.7

230

73

23/07/2003

61

65

83

42

53.9

060

77

29/07/2003

22

19

15

6

10.9

160

75

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

05/07/2003

15:00-15:59

28

57

22

16:00-16:59

25

27

17

17:00-17:59

38

21

24

11/07/2003

15:00-15:59

25

37

35

16:00-16:59

8

12

3

17:00-17:59

13

12

15

17/07/2003

15:00-15:59

25

35

33

16:00-16:59

15

45

24

17:00-17:59

20

31

25

23/07/2003

15:00-15:59

51

60

74

16:00-16:59

8

8

11

17:00-17:59

16

26

12

29/07/2003

15:00-15:59

20

21

23

16:00-16:59

16

18

12

17:00-17:59

17

17

14

 

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