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)

3/5/2025

42

31

35

8

3/5/2025

15:00 - 15:59

39

36

31

9/5/2025

33

37

35

4

16:00 - 16:59

54

37

32

15/5/2025

22

39

45

58

17:00 - 17:59

55

33

32

21/5/2025

22

19

21

11

9/5/2025

15:00 - 15:59

28

18

32

27/5/2025

38

42

34

33

16:00 - 16:59

23

21

29

 

 

 

 

 

17:00 - 17:59

26

28

45

 

15/5/2025

15:00 - 15:59

20

32

41

16:00 - 16:59

15

33

32

17:00 - 17:59

20

43

34

 

21/5/2025

15:00 - 15:59

32

25

22

 

16:00 - 16:59

23

21

21

 

17:00 - 17:59

18

25

23

 

27/5/2025

15:00 - 15:59

40

58

26

 

16:00 - 16:59

20

24

19

 

 

 

 

 

 

17:00 - 17:59

33

33

27

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/5/2025

78

2/5/2025

77

3/5/2025

72

4/5/2025

72

5/5/2025

73

6/5/2025

69

7/5/2025

69

8/5/2025

71

9/5/2025

69

10/5/2025

75

11/5/2025

77

12/5/2025

79

13/5/2025

76

14/5/2025

74

15/5/2025

73

16/5/2025

72

17/5/2025

70

18/5/2025

71

19/5/2025

67

20/5/2025

64

21/5/2025

69

22/5/2025

73

23/5/2025

66

24/5/2025

74

25/5/2025

78

26/5/2025

78

 

 

 

 

 

 

 

27/5/2025

76

 

 

 

 

 

 

 

28/5/2025

74

 

 

 

 

 

 

 

29/5/2025

68

 

 

 

 

 

 

 

30/5/2025

71

 

 

 

 

 

 

 

31/5/2025

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

 

 

 

 

 

# - Hourly average value.  Expressed as at 0°C, 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)#

1/5/2025

3

2/5/2025

3

3/5/2025

3

4/5/2025

3

5/5/2025

3

6/5/2025

3

7/5/2025

3

8/5/2025

3

9/5/2025

3

10/5/2025

3

11/5/2025

3

12/5/2025

3

13/5/2025

3

14/5/2025

3

15/5/2025

3

16/5/2025

3

17/5/2025

*

18/5/2025

*

19/5/2025

3

20/5/2025

3

21/5/2025

3

22/5/2025

3

23/5/2025

3

24/5/2025

3

25/5/2025

4

26/5/2025

3

 

 

 

 

 

 

 

27/5/2025

3

 

 

 

 

 

 

 

28/5/2025

3

 

 

 

 

 

 

 

29/5/2025

3

 

 

 

 

 

 

 

30/5/2025

3

 

 

 

 

 

 

 

31/5/2025

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°C, 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)#

1/5/2025

*

2/5/2025

*

3/5/2025

*

4/5/2025

*

5/5/2025

*

 

 

 

 

 

 

 

6/5/2025

*

 

 

 

 

 

 

 

7/5/2025

*

8/5/2025

*

9/5/2025

*

10/5/2025

*

11/5/2025

*

12/5/2025

*

 

 

 

 

 

 

 

13/5/2025

*

 

 

 

 

 

 

 

14/5/2025

*

 

 

 

 

 

 

 

15/5/2025

*

 

 

 

 

 

 

 

16/5/2025

*

 

 

 

 

 

 

 

17/5/2025

*

 

 

 

 

 

 

 

18/5/2025

*

 

 

 

 

 

 

 

19/5/2025

*

 

 

 

 

 

 

 

20/5/2025

*

 

 

 

 

 

 

 

21/5/2025

3

 

 

 

 

 

 

 

22/5/2025

4

 

 

 

 

 

 

 

23/5/2025

3

 

 

 

 

 

 

 

24/5/2025

*

 

 

 

 

 

 

 

25/5/2025

*

 

 

 

 

 

 

 

26/5/2025

*

 

 

 

 

 

 

 

27/5/2025

3

 

 

 

 

 

 

 

28/5/2025

4

 

 

 

 

 

 

 

29/5/2025

4

 

 

 

 

 

 

 

30/5/2025

4

 

 

 

 

 

 

 

31/5/2025

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°C, 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)#

1/5/2025

4

2/5/2025

4

3/5/2025

4

4/5/2025

4

 

 

 

 

 

 

 

5/5/2025

4

6/5/2025

5^

 

 

 

 

 

 

 

7/5/2025

4

8/5/2025

5^

9/5/2025

4

10/5/2025

5^

11/5/2025

5^

12/5/2025

5^

 

 

 

 

 

 

 

13/5/2025

3

 

 

 

 

 

 

 

14/5/2025

4

 

 

 

 

 

 

 

15/5/2025

4

 

 

 

 

 

 

 

16/5/2025

4

 

 

 

 

 

 

 

17/5/2025

4

 

 

 

 

 

 

 

18/5/2025

4

 

 

 

 

 

 

 

19/5/2025

3

 

 

 

 

 

 

 

20/5/2025

3

 

 

 

 

 

 

 

21/5/2025

3

 

 

 

 

 

 

 

22/5/2025

3

 

 

 

 

 

 

 

23/5/2025

3

 

 

 

 

 

 

 

24/5/2025

3

 

 

 

 

 

 

 

25/5/2025

4

 

 

 

 

 

 

 

26/5/2025

3

 

 

 

 

 

 

 

27/5/2025

4

 

 

 

 

 

 

 

28/5/2025

3

 

 

 

 

 

 

 

29/5/2025

4

 

 

 

 

 

 

 

30/5/2025

3

 

 

 

 

 

 

 

31/5/2025

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°C, 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.