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)

5/3/2026

14

20

14

24

5/3/2026

15:00 - 15:59

15

24

12

11/3/2026

33

32

30

28

16:00 - 16:59

21

23

12

17/3/2026

38

36

34

35

17:00 - 17:59

16

20

13

23/3/2026

27

29

25

29

11/3/2026

15:00 - 15:59

34

35

32

29/3/2026

42

39

39

29

16:00 - 16:59

35

35

31

 

 

 

 

 

17:00 - 17:59

40

33

31

 

17/3/2026

15:00 - 15:59

46

43

41

16:00 - 16:59

32

33

27

17:00 - 17:59

26

32

32

 

23/3/2026

15:00 - 15:59

37

40

26

 

16:00 - 16:59

32

44

24

 

17:00 - 17:59

26

43

27

 

29/3/2026

15:00 - 15:59

55

54

64

 

16:00 - 16:59

60

56

61

 

 

 

 

 

 

17:00 - 17:59

54

52

53

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/3/2026

*

2/3/2026

*

3/3/2026

*

4/3/2026

*

5/3/2026

*

6/3/2026

*

7/3/2026

*

8/3/2026

*

9/3/2026

*

10/3/2026

*

11/3/2026

*

12/3/2026

*

13/3/2026

*

14/3/2026

*

15/3/2026

*

16/3/2026

*

17/3/2026

*

18/3/2026

*

19/3/2026

*

20/3/2026

*

21/3/2026

*

22/3/2026

*

23/3/2026

*

24/3/2026

*

25/3/2026

*

26/3/2026

*

 

 

 

 

 

 

 

27/3/2026

*

 

 

 

 

 

 

 

28/3/2026

*

 

 

 

 

 

 

 

29/3/2026

*

 

 

 

 

 

 

 

30/3/2026

*

 

 

 

 

 

 

 

31/3/2026

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)#

1/3/2026

*

2/3/2026

*

3/3/2026

*

4/3/2026

*

5/3/2026

*

6/3/2026

*

7/3/2026

*

8/3/2026

*

9/3/2026

*

10/3/2026

*

11/3/2026

*

12/3/2026

*

13/3/2026

*

14/3/2026

*

15/3/2026

*

16/3/2026

*

17/3/2026

*

18/3/2026

*

19/3/2026

*

20/3/2026

*

21/3/2026

*

22/3/2026

*

23/3/2026

*

24/3/2026

*

25/3/2026

3

26/3/2026

3

 

 

 

 

 

 

 

27/3/2026

3

 

 

 

 

 

 

 

28/3/2026

3

 

 

 

 

 

 

 

29/3/2026

*

 

 

 

 

 

 

 

30/3/2026

*

 

 

 

 

 

 

 

31/3/2026

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)#

1/3/2026

3

2/3/2026

3

3/3/2026

3

4/3/2026

3

 

 

 

 

 

 

 

5/3/2026

4

 

 

 

 

 

 

 

6/3/2026

4

 

 

 

 

 

 

 

7/3/2026

4

8/3/2026

3

 

 

 

 

 

 

 

9/3/2026

3

 

 

 

 

 

 

 

10/3/2026

7^

11/3/2026

5^

12/3/2026

5^

13/3/2026

6^

14/3/2026

7^

15/3/2026

3

 

 

 

 

 

 

 

16/3/2026

6^

 

 

 

 

 

 

 

17/3/2026

3

 

 

 

 

 

 

 

18/3/2026

3

 

 

 

 

 

 

 

19/3/2026

3

 

 

 

 

 

 

 

20/3/2026

2

 

 

 

 

 

 

 

21/3/2026

2

 

 

 

 

 

 

 

22/3/2026

3

 

 

 

 

 

 

 

23/3/2026

2

 

 

 

 

 

 

 

24/3/2026

2

 

 

 

 

 

 

 

25/3/2026

3

 

 

 

 

 

 

 

26/3/2026

3

 

 

 

 

 

 

 

27/3/2026

3

 

 

 

 

 

 

 

28/3/2026

2

 

 

 

 

 

 

 

29/3/2026

2

 

 

 

 

 

 

 

30/3/2026

3

 

 

 

 

 

 

 

31/3/2026

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)#

1/3/2026

3

2/3/2026

5^

3/3/2026

3

4/3/2026

5^

 

 

 

 

 

 

 

5/3/2026

7^

 

 

 

 

 

 

 

6/3/2026

7^

 

 

 

 

 

 

 

7/3/2026

5^

 

 

 

 

 

 

 

8/3/2026

*

9/3/2026

*

 

 

 

 

 

 

 

10/3/2026

*

11/3/2026

*

12/3/2026

*

13/3/2026

*

14/3/2026

*

15/3/2026

*

 

 

 

 

 

 

 

16/3/2026

*

 

 

 

 

 

 

 

17/3/2026

3

 

 

 

 

 

 

 

18/3/2026

3

 

 

 

 

 

 

 

19/3/2026

3

 

 

 

 

 

 

 

20/3/2026

3

 

 

 

 

 

 

 

21/3/2026

3

 

 

 

 

 

 

 

22/3/2026

3

 

 

 

 

 

 

 

23/3/2026

3

 

 

 

 

 

 

 

24/3/2026

3

 

 

 

 

 

 

 

25/3/2026

3

 

 

 

 

 

 

 

26/3/2026

3

 

 

 

 

 

 

 

27/3/2026

3

 

 

 

 

 

 

 

28/3/2026

3

 

 

 

 

 

 

 

29/3/2026

3

 

 

 

 

 

 

 

30/3/2026

3

 

 

 

 

 

 

 

31/3/2026

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 L12 was not on load.

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