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)

2/8/2026

12

12

16

33

2/8/2026

15:00 - 15:59

30

9

2

8/8/2026

59

101

49

19

16:00 - 16:59

2

9

11

14/8/2026

21

25

16

13

17:00 - 17:59

13

9

21

20/8/2026

13

23

7

31

8/8/2026

15:00 - 15:59

92

276

24

26/8/2026

29

26

20

32

16:00 - 16:59

75

191

44

 

 

 

 

 

17:00 - 17:59

69

119

94

 

14/8/2026

15:00 - 15:59

15

26

8

16:00 - 16:59

11

24

12

17:00 - 17:59

15

24

16

 

20/8/2026

15:00 - 15:59

11

24

8

 

16:00 - 16:59

9

39

6

 

17:00 - 17:59

14

50

5

 

26/8/2026

15:00 - 15:59

21

19

14

 

16:00 - 16:59

16

22

15

 

 

 

17:00 - 17:59

21

25

18

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/8/2026

56

2/8/2026

56

3/8/2026

56

4/8/2026

55

5/8/2026

55

6/8/2026

52

7/8/2026

51

8/8/2026

55

9/8/2026

63

10/8/2026

59

11/8/2026

58

12/8/2026

53

13/8/2026

52

14/8/2026

55

15/8/2026

54

16/8/2026

55

17/8/2026

58

18/8/2026

58

19/8/2026

60

20/8/2026

58

21/8/2026

56

22/8/2026

54

23/8/2026

53

24/8/2026

53

25/8/2026

54

26/8/2026

56

 

 

 

 

 

 

 

27/8/2026

50

 

 

 

 

 

 

 

28/8/2026

51

 

 

 

 

 

 

 

29/8/2026

51

 

 

 

 

 

 

 

30/8/2026

51

 

 

 

 

 

 

 

31/8/2026

52

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)#

1/8/2026

3

2/8/2026

3

3/8/2026

3

4/8/2026

3

5/8/2026

3

6/8/2026

3

7/8/2026

3

8/8/2026

3

9/8/2026

3

10/8/2026

3

11/8/2026

3

12/8/2026

3

13/8/2026

3

14/8/2026

3

15/8/2026

3

16/8/2026

3

17/8/2026

3

18/8/2026

3

19/8/2026

3

20/8/2026

3

21/8/2026

3

22/8/2026

3

23/8/2026

3

24/8/2026

3

25/8/2026

3

26/8/2026

3

 

 

 

 

 

 

 

27/8/2026

3

 

 

 

 

 

 

 

28/8/2026

3

 

 

 

 

 

 

 

29/8/2026

3

 

 

 

 

 

 

 

30/8/2026

3

 

 

 

 

 

 

 

31/8/2026

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)#

1/8/2026

2

2/8/2026

2

3/8/2026

2

4/8/2026

3

 

 

 

 

 

 

 

5/8/2026

3

 

 

 

 

 

 

 

6/8/2026

3

 

 

 

 

 

 

 

7/8/2026

3

8/8/2026

2

 

 

 

 

 

 

 

9/8/2026

2

 

 

 

 

 

 

 

10/8/2026

2

11/8/2026

3

12/8/2026

2

13/8/2026

2

14/8/2026

2

15/8/2026

2

 

 

 

 

 

 

 

16/8/2026

2

 

 

 

 

 

 

 

17/8/2026

2

 

 

 

 

 

 

 

18/8/2026

2

 

 

 

 

 

 

 

19/8/2026

2

 

 

 

 

 

 

 

20/8/2026

2

 

 

 

 

 

 

 

21/8/2026

2

 

 

 

 

 

 

 

22/8/2026

2

 

 

 

 

 

 

 

23/8/2026

2

 

 

 

 

 

 

 

24/8/2026

2

 

 

 

 

 

 

 

25/8/2026

2

 

 

 

 

 

 

 

26/8/2026

2

 

 

 

 

 

 

 

27/8/2026

2

 

 

 

 

 

 

 

28/8/2026

2

 

 

 

 

 

 

 

29/8/2026

2

 

 

 

 

 

 

 

30/8/2026

2

 

 

 

 

 

 

 

31/8/2026

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)#

1/8/2026

3

2/8/2026

3

3/8/2026

3

4/8/2026

3

 

 

 

 

 

 

 

5/8/2026

3

 

 

 

 

 

 

 

6/8/2026

3

 

 

 

 

 

 

 

7/8/2026

3

 

 

 

 

 

 

 

8/8/2026

3

9/8/2026

3

 

 

 

 

 

 

 

10/8/2026

3

11/8/2026

3

12/8/2026

3

13/8/2026

3

14/8/2026

3

15/8/2026

3

 

 

 

 

 

 

 

16/8/2026

3

 

 

 

 

 

 

 

17/8/2026

3

 

 

 

 

 

 

 

18/8/2026

3

 

 

 

 

 

 

 

19/8/2026

3

 

 

 

 

 

 

 

20/8/2026

3

 

 

 

 

 

 

 

21/8/2026

3

 

 

 

 

 

 

 

22/8/2026

3

 

 

 

 

 

 

 

23/8/2026

3

 

 

 

 

 

 

 

24/8/2026

3

 

 

 

 

 

 

 

25/8/2026

3

 

 

 

 

 

 

 

26/8/2026

3

 

 

 

 

 

 

 

27/8/2026

3

 

 

 

 

 

 

 

28/8/2026

3

 

 

 

 

 

 

 

29/8/2026

3

 

 

 

 

 

 

 

30/8/2026

3

 

 

 

 

 

 

 

31/8/2026

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.