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)

3/6/2026

28

26

17

28

3/6/2026

15:00 - 15:59

21

37

15

9/6/2026

26

36

23

18

16:00 - 16:59

20

30

14

15/6/2026

19

27

34

38

17:00 - 17:59

21

26

20

21/6/2026

24

17

37

39

9/6/2026

15:00 - 15:59

36

75

44

27/6/2026

25

40

22

36

16:00 - 16:59

52

71

39

 

 

 

 

 

17:00 - 17:59

49

50

31

 

15/6/2026

15:00 - 15:59

19

23

54

16:00 - 16:59

11

24

19

17:00 - 17:59

16

26

19

 

21/6/2026

15:00 - 15:59

20

12

51

 

16:00 - 16:59

16

15

18

 

17:00 - 17:59

18

18

67

 

27/6/2026

15:00 - 15:59

27

69

33

 

16:00 - 16:59

34

58

39

 

 

 

 

 

 

17:00 - 17:59

38

37

37

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/6/2026

59

2/6/2026

54

3/6/2026

57

4/6/2026

60

5/6/2026

56

6/6/2026

58

7/6/2026

57

8/6/2026

56

9/6/2026

63

10/6/2026

62

11/6/2026

55

12/6/2026

*

13/6/2026

*

14/6/2026

55

15/6/2026

56

16/6/2026

57

17/6/2026

57

18/6/2026

55

19/6/2026

55

20/6/2026

54

21/6/2026

54

22/6/2026

55

23/6/2026

53

24/6/2026

53

25/6/2026

54

26/6/2026

56

 

 

 

 

 

 

 

27/6/2026

55

 

 

 

 

 

 

 

28/6/2026

53

 

 

 

 

 

 

 

29/6/2026

55

 

 

 

 

 

 

 

30/6/2026

56

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

 

 

 

 

 

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

 

 

 

 

* - 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)#

1/6/2026

3

2/6/2026

3

3/6/2026

3

4/6/2026

3

5/6/2026

3

6/6/2026

3

7/6/2026

3

8/6/2026

3

9/6/2026

3

10/6/2026

3

11/6/2026

3

12/6/2026

3

13/6/2026

3

14/6/2026

3

15/6/2026

3

16/6/2026

3

17/6/2026

3

18/6/2026

3

19/6/2026

3

20/6/2026

3

21/6/2026

3

22/6/2026

3

23/6/2026

3

24/6/2026

3

25/6/2026

3

26/6/2026

3

 

 

 

 

 

 

 

27/6/2026

3

 

 

 

 

 

 

 

28/6/2026

3

 

 

 

 

 

 

 

29/6/2026

3

 

 

 

 

 

 

 

30/6/2026

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 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)#

1/6/2026

2

2/6/2026

2

3/6/2026

2

4/6/2026

2

 

 

 

 

 

 

 

5/6/2026

2

 

 

 

 

 

 

 

6/6/2026

2

 

 

 

 

 

 

 

7/6/2026

2

8/6/2026

2

 

 

 

 

 

 

 

9/6/2026

2

 

 

 

 

 

 

 

10/6/2026

3

11/6/2026

3

12/6/2026

2

13/6/2026

2

14/6/2026

2

15/6/2026

2

 

 

 

 

 

 

 

16/6/2026

2

 

 

 

 

 

 

 

17/6/2026

2

 

 

 

 

 

 

 

18/6/2026

2

 

 

 

 

 

 

 

19/6/2026

2

 

 

 

 

 

 

 

20/6/2026

2

 

 

 

 

 

 

 

21/6/2026

2

 

 

 

 

 

 

 

22/6/2026

2

 

 

 

 

 

 

 

23/6/2026

2

 

 

 

 

 

 

 

24/6/2026

2

 

 

 

 

 

 

 

25/6/2026

2

 

 

 

 

 

 

 

26/6/2026

2

 

 

 

 

 

 

 

27/6/2026

2

 

 

 

 

 

 

 

28/6/2026

2

 

 

 

 

 

 

 

29/6/2026

2

 

 

 

 

 

 

 

30/6/2026

2

 

 

 

 

 

 

 

 

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)#

1/6/2026

3

2/6/2026

3

3/6/2026

3

4/6/2026

3

 

 

 

 

 

 

 

5/6/2026

3

 

 

 

 

 

 

 

6/6/2026

3

 

 

 

 

 

 

 

7/6/2026

3

 

 

 

 

 

 

 

8/6/2026

3

9/6/2026

3

 

 

 

 

 

 

 

10/6/2026

3

11/6/2026

3

12/6/2026

3

13/6/2026

3

14/6/2026

3

15/6/2026

3

 

 

 

 

 

 

 

16/6/2026

4

 

 

 

 

 

 

 

17/6/2026

4

 

 

 

 

 

 

 

18/6/2026

4

 

 

 

 

 

 

 

19/6/2026

4

 

 

 

 

 

 

 

20/6/2026

3

 

 

 

 

 

 

 

21/6/2026

4

 

 

 

 

 

 

 

22/6/2026

4

 

 

 

 

 

 

 

23/6/2026

3

 

 

 

 

 

 

 

24/6/2026

3

 

 

 

 

 

 

 

25/6/2026

4

 

 

 

 

 

 

 

26/6/2026

3

 

 

 

 

 

 

 

27/6/2026

3

 

 

 

 

 

 

 

28/6/2026

3

 

 

 

 

 

 

 

29/6/2026

4

 

 

 

 

 

 

 

30/6/2026

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.