Lamma Power Station Extension - Air Quality Monitoring Data for unit L13 (Construction)

24-hr TSP (µg/m3)

1-hr TSP (µg/m3)

Date

Reservoir

 (AM1)

East Gate

 (AM2)

Ash Lagoon (AM3)

Tai Yuen Village (AM4)

Date

Time

Reservoir (AM1)

East Gate (AM2)

Ash Lagoon (AM3)

1/8/2025

34

40

24

13

1/8/2025

15:00 - 15:59

31

46

18

7/8/2025

31

50

36

22

16:00 - 16:59

32

42

26

13/8/2025

26

39

23

19

17:00 - 17:59

32

40

14

19/8/2025

25

28

29

28

7/8/2025

15:00 - 15:59

24

94

36

25/8/2025

20

33

16

13

16:00 - 16:59

33

180

39

31/8/2025

13

15

14

8

17:00 - 17:59

36

123

31

 

13/8/2025

15:00 - 15:59

34

54

19

16:00 - 16:59

35

57

21

17:00 - 17:59

39

49

33

 

19/8/2025

15:00 - 15:59

31

39

36

 

16:00 - 16:59

36

33

19

 

17:00 - 17:59

24

23

9

 

25/8/2025

15:00 - 15:59

30

72

42

 

16:00 - 16:59

35

69

40

 

 

 

 

 

 

17:00 - 17:59

19

38

13

 

 

 

 

 

 

31/8/2025

15:00 - 15:59

17

20

23

 

 

 

 

 

 

16:00 - 16:59

20

20

16

 

 

 

 

 

 

17:00 - 17:59

14

20

21

 

 

Lamma Power Station Extension - Air Quality Monitoring Data for unit L9 (Operation)

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/8/2025

62

2/8/2025

63

3/8/2025

69

4/8/2025

64

5/8/2025

66

6/8/2025

69

7/8/2025

68

8/8/2025

61

9/8/2025

67

10/8/2025

67

11/8/2025

67

12/8/2025

67

13/8/2025

67

14/8/2025

67

15/8/2025

67

16/8/2025

75

17/8/2025

74

18/8/2025

66

19/8/2025

69

20/8/2025

74

21/8/2025

68

22/8/2025

70

23/8/2025

72

24/8/2025

69

25/8/2025

70

26/8/2025

69

 

 

 

 

 

 

 

27/8/2025

68

 

 

 

 

 

 

 

28/8/2025

67

 

 

 

 

 

 

 

29/8/2025

68

 

 

 

 

 

 

 

30/8/2025

71

 

 

 

 

 

 

 

31/8/2025

68

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

 

 

 

 

 

# - Hourly average value.  Expressed as at 0¢XC, 101.325kPa, dry and corrected to 15% O2 condition.

^ - The NOx concentration exceeded action level due to low relative humidity.

 

 

 

 

* - Unit L9 was not on load.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lamma Power Station Extension - Air Quality Monitoring Data for unit L10 (Operation)

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/8/2025

3

2/8/2025

3

3/8/2025

3

4/8/2025

4

5/8/2025

4

6/8/2025

3

7/8/2025

3

8/8/2025

3

9/8/2025

3

10/8/2025

3

11/8/2025

4

12/8/2025

4

13/8/2025

3

14/8/2025

3

15/8/2025

3

16/8/2025

*

17/8/2025

*

18/8/2025

3

19/8/2025

3

20/8/2025

4

21/8/2025

3

22/8/2025

3

23/8/2025

4

24/8/2025

4

25/8/2025

3

26/8/2025

4

 

 

 

 

 

 

 

27/8/2025

4

 

 

 

 

 

 

 

28/8/2025

4

 

 

 

 

 

 

 

29/8/2025

4

 

 

 

 

 

 

 

30/8/2025

3

 

 

 

 

 

 

 

31/8/2025

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The daily maximum stack NOx concentration complies with the Action/Limit Level for all unit loading ranges.

 

Note:

# - Hourly average value.  Expressed as at 0¢XC, 101.325kPa, dry and corrected to 15% O2 condition.

* - Unit L10 was not on load.

^ - Unit L10 was operating with loading less than 266 MW.

 

 

Lamma Power Station Extension - Air Quality Monitoring Data for unit L11 (Operation)

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/8/2025

3

2/8/2025

3

3/8/2025

3

4/8/2025

3

5/8/2025

3

 

 

 

 

 

 

 

6/8/2025

3

 

 

 

 

 

 

 

7/8/2025

3

8/8/2025

3

9/8/2025

*

10/8/2025

*

11/8/2025

3

12/8/2025

3

 

 

 

 

 

 

 

13/8/2025

3

 

 

 

 

 

 

 

14/8/2025

3

 

 

 

 

 

 

 

15/8/2025

3

 

 

 

 

 

 

 

16/8/2025

3

 

 

 

 

 

 

 

17/8/2025

3

 

 

 

 

 

 

 

18/8/2025

3

 

 

 

 

 

 

 

19/8/2025

3

 

 

 

 

 

 

 

20/8/2025

3

 

 

 

 

 

 

 

21/8/2025

3

 

 

 

 

 

 

 

22/8/2025

3

 

 

 

 

 

 

 

23/8/2025

*

 

 

 

 

 

 

 

24/8/2025

*

 

 

 

 

 

 

 

25/8/2025

3

 

 

 

 

 

 

 

26/8/2025

4

 

 

 

 

 

 

 

27/8/2025

3

 

 

 

 

 

 

 

28/8/2025

4

 

 

 

 

 

 

 

29/8/2025

3

 

 

 

 

 

 

 

30/8/2025

3

 

 

 

 

 

 

 

31/8/2025

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The daily maximum stack NOx concentration complies with the Action/Limit Level for all unit loading ranges.

 

Note:

# - Hourly average value.  Expressed as at 0¢XC, 101.325kPa, dry and corrected to 15% O2 condition.

* - Unit L11 was not on load.

^ - Unit L11 was operating with loading less than 266 MW.

 

Lamma Power Station Extension - Air Quality Monitoring Data for unit L12 (Operation)

 

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/8/2025

4

2/8/2025

4

3/8/2025

4

4/8/2025

4

 

 

 

 

 

 

 

5/8/2025

4

6/8/2025

4

 

 

 

 

 

 

 

7/8/2025

4

8/8/2025

4

9/8/2025

4

10/8/2025

4

11/8/2025

4

12/8/2025

4

 

 

 

 

 

 

 

13/8/2025

4

 

 

 

 

 

 

 

14/8/2025

4

 

 

 

 

 

 

 

15/8/2025

4

 

 

 

 

 

 

 

16/8/2025

4

 

 

 

 

 

 

 

17/8/2025

4

 

 

 

 

 

 

 

18/8/2025

4

 

 

 

 

 

 

 

19/8/2025

4

 

 

 

 

 

 

 

20/8/2025

4

 

 

 

 

 

 

 

21/8/2025

4

 

 

 

 

 

 

 

22/8/2025

4

 

 

 

 

 

 

 

23/8/2025

4

 

 

 

 

 

 

 

24/8/2025

4

 

 

 

 

 

 

 

25/8/2025

4

 

 

 

 

 

 

 

26/8/2025

4

 

 

 

 

 

 

 

27/8/2025

4

 

 

 

 

 

 

 

28/8/2025

4

 

 

 

 

 

 

 

29/8/2025

4

 

 

 

 

 

 

 

30/8/2025

4

 

 

 

 

 

 

 

31/8/2025

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The daily maximum stack NOx concentration complies with the Action/Limit Level for all unit loading ranges.

 

Note:

# - Hourly average value.  Expressed as at 0¢XC, 101.325kPa, dry and corrected to 15% O2 condition.

* - Unit L12 was not on load.

^ - Unit L12 was operating with loading less than 266 MW.