APPENDIX E  AIR QUALITY MONITORING RESULTS FOR JULY 2001

 

Site: Lamma Power Station Extension

 

Month: July 2001

 

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.

(%)

03/07/2001

30

47

52

39

28.3

090

85

09/07/2001

29

31

42

26

8.8

220

81

15/07/2001

22

25

29

19

15.3

200

92

21/07/2001

28

25

85

18

27.5

110

93

27/07/2001

26

32

43

28

15.8

120

87

 

 

1 hour TSP Measurement:-

Date

Time

TSP concentration (mg/m3)

Reservoir

(AM1)

East Gate

(AM2)

Ash Lagoon

(AM3)

03/07/2001

15:00-15:59

32

23

35

16:00-16:59

13

10

24

17:00-17:59

12

0

20

09/07/2001

15:00-15:59

28

22

17

16:00-16:59

48

46

27

17:00-17:59

25

16

17

15/7/2001 (Remark 2)

15:00-15:59

0 (16/07)

10

7

16:00-16:59

0 (16/07)

0

5

17:00-17:59

8 (16/07)

0

3

21/07/2001

15:00-15:59

23

7

11

16:00-16:59

16

0

5

17:00-17:59

6

2

8

27/07/2001

15:00-15:59

21

21

18

16:00-16:59

31

17

23

17:00-17:59

31

15

22

 

Remark:

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

 

(2)            TEOM at AM1 (Reservoir) was tripped on 15/7/2001.  A make-up 1hr TSP sampling for AM1 was carried out on 16/7/2001.

 

                          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 H.

 

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