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)

3/2/2026

43

52

37

68

3/2/2026

15:00 - 15:59

45

72

38

9/2/2026

47

52

42

100

16:00 - 16:59

44

52

41

15/2/2026

35

28

38

63

17:00 - 17:59

45

45

42

21/2/2026

37

35

35

81

9/2/2026

15:00 - 15:59

43

55

38

27/2/2026

18

20

15

14

16:00 - 16:59

42

47

36

 

 

 

 

 

17:00 - 17:59

41

44

31

 

15/2/2026

15:00 - 15:59

33

22

18

16:00 - 16:59

23

26

15

17:00 - 17:59

29

36

30

 

21/2/2026

15:00 - 15:59

40

39

41

 

16:00 - 16:59

43

40

43

 

17:00 - 17:59

44

40

40

 

27/2/2026

15:00 - 15:59

18

28

21

 

16:00 - 16:59

25

27

24

 

 

 

 

 

 

17:00 - 17:59

25

23

24

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/2/2026

63

2/2/2026

66

3/2/2026

63

4/2/2026

62

5/2/2026

61

6/2/2026

61

7/2/2026

60

8/2/2026

65

9/2/2026

63

10/2/2026

63

11/2/2026

62

12/2/2026

61

13/2/2026

61

14/2/2026

63

15/2/2026

61

16/2/2026

60

17/2/2026

61

18/2/2026

65

19/2/2026

64

20/2/2026

63

21/2/2026

62

22/2/2026

61

23/2/2026

63

24/2/2026

61

25/2/2026

*

26/2/2026

*

 

 

 

 

 

 

 

27/2/2026

*

 

 

 

 

 

 

 

28/2/2026

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

 

 

 

 

 

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

 

 

 

 

* - Unit L9 was not on load.

 

 

 

 

 

 

 

 

 

^ - The NOx concentration was 80.8 mg/Nm3, which is below the Action Level of 81 mg/Nm3.

 

 

 

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/2/2026

*

2/2/2026

4

3/2/2026

*

4/2/2026

*

5/2/2026

*

6/2/2026

*

7/2/2026

*

8/2/2026

*

9/2/2026

*

10/2/2026

*

11/2/2026

*

12/2/2026

*

13/2/2026

*

14/2/2026

*

15/2/2026

*

16/2/2026

*

17/2/2026

*

18/2/2026

*

19/2/2026

*

20/2/2026

*

21/2/2026

*

22/2/2026

*

23/2/2026

*

24/2/2026

*

25/2/2026

*

26/2/2026

*

 

 

 

 

 

 

 

27/2/2026

*

 

 

 

 

 

 

 

28/2/2026

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)#

1/2/2026

*

2/2/2026

*

3/2/2026

*

4/2/2026

*

5/2/2026

*

 

 

 

 

 

 

 

6/2/2026

*

 

 

 

 

 

 

 

7/2/2026

*

8/2/2026

*

9/2/2026

*

10/2/2026

*

11/2/2026

*

12/2/2026

*

 

 

 

 

 

 

 

13/2/2026

*

 

 

 

 

 

 

 

14/2/2026

*

 

 

 

 

 

 

 

15/2/2026

*

 

 

 

 

 

 

 

16/2/2026

*

 

 

 

 

 

 

 

17/2/2026

*

 

 

 

 

 

 

 

18/2/2026

*

 

 

 

 

 

 

 

19/2/2026

*

 

 

 

 

 

 

 

20/2/2026

*

 

 

 

 

 

 

 

21/2/2026

*

 

 

 

 

 

 

 

22/2/2026

*

 

 

 

 

 

 

 

23/2/2026

3

 

 

 

 

 

 

 

24/2/2026

*

 

 

 

 

 

 

 

25/2/2026

3

 

 

 

 

 

 

 

26/2/2026

3

 

 

 

 

 

 

 

27/2/2026

3

 

 

 

 

 

 

 

28/2/2026

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)#

1/2/2026

6^

2/2/2026

6^

3/2/2026

6^

4/2/2026

6^

 

 

 

 

 

 

 

5/2/2026

6^

6/2/2026

6^

 

 

 

 

 

 

 

7/2/2026

5^

8/2/2026

6^

9/2/2026

7^

10/2/2026

6^

11/2/2026

6^

12/2/2026

5^

 

 

 

 

 

 

 

13/2/2026

5^

 

 

 

 

 

 

 

14/2/2026

5^

 

 

 

 

 

 

 

15/2/2026

5^

 

 

 

 

 

 

 

16/2/2026

5^

 

 

 

 

 

 

 

17/2/2026

4

 

 

 

 

 

 

 

18/2/2026

6^

 

 

 

 

 

 

 

19/2/2026

5^

 

 

 

 

 

 

 

20/2/2026

5^

 

 

 

 

 

 

 

21/2/2026

5^

 

 

 

 

 

 

 

22/2/2026

5^

 

 

 

 

 

 

 

23/2/2026

4

 

 

 

 

 

 

 

24/2/2026

3

 

 

 

 

 

 

 

25/2/2026

5^

 

 

 

 

 

 

 

26/2/2026

3

 

 

 

 

 

 

 

27/2/2026

4^

 

 

 

 

 

 

 

28/2/2026

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.