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)

2/7/2025

20

19

21

11

2/7/2025

15:00 - 15:59

16

25

17

8/7/2025

20

81

22

11

16:00 - 16:59

25

22

19

14/7/2025

24

22

28

17

17:00 - 17:59

22

16

32

20/7/2025

21

27

27

8

8/7/2025

15:00 - 15:59

17

33

41

26/7/2025

40

36

42

19

16:00 - 16:59

16

38

17

 

 

 

 

 

17:00 - 17:59

16

46

31

 

14/7/2025

15:00 - 15:59

25

21

67

16:00 - 16:59

40

21

37

17:00 - 17:59

21

17

37

 

20/7/2025

15:00 - 15:59

24

24

31

 

16:00 - 16:59

22

21

12

 

17:00 - 17:59

18

24

30

 

26/7/2025

15:00 - 15:59

51

39

52

 

16:00 - 16:59

43

38

46

 

 

 

 

 

 

17:00 - 17:59

33

42

54

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/7/2025

68

2/7/2025

66

3/7/2025

69

4/7/2025

73

5/7/2025

68

6/7/2025

68

7/7/2025

62

8/7/2025

64

9/7/2025

64

10/7/2025

62

11/7/2025

65

12/7/2025

65

13/7/2025

64

14/7/2025

63

15/7/2025

62

16/7/2025

66

17/7/2025

65

18/7/2025

66

19/7/2025

65

20/7/2025

*

21/7/2025

60

22/7/2025

60

23/7/2025

63

24/7/2025

68

25/7/2025

68

26/7/2025

66

 

 

 

 

 

 

 

27/7/2025

63

 

 

 

 

 

 

 

28/7/2025

62

 

 

 

 

 

 

 

29/7/2025

62

 

 

 

 

 

 

 

30/7/2025

61

 

 

 

 

 

 

 

31/7/2025

65

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note:

 

 

 

 

 

# - Hourly average value.  Expressed as at 0¢XC, 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)#

1/7/2025

3

2/7/2025

3

3/7/2025

3

4/7/2025

3

5/7/2025

3

6/7/2025

3

7/7/2025

3

8/7/2025

3

9/7/2025

3

10/7/2025

3

11/7/2025

3

12/7/2025

3

13/7/2025

3

14/7/2025

3

15/7/2025

3

16/7/2025

3

17/7/2025

3

18/7/2025

3

19/7/2025

3

20/7/2025

3

21/7/2025

3

22/7/2025

3

23/7/2025

3

24/7/2025

3

25/7/2025

3

26/7/2025

3

 

 

 

 

 

 

 

27/7/2025

3

 

 

 

 

 

 

 

28/7/2025

3

 

 

 

 

 

 

 

29/7/2025

3

 

 

 

 

 

 

 

30/7/2025

3

 

 

 

 

 

 

 

31/7/2025

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¢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)#

1/7/2025

3

2/7/2025

3

3/7/2025

3

4/7/2025

3

5/7/2025

3

 

 

 

 

 

 

 

6/7/2025

3

 

 

 

 

 

 

 

7/7/2025

3

8/7/2025

3

9/7/2025

3

10/7/2025

3

11/7/2025

3

12/7/2025

3

 

 

 

 

 

 

 

13/7/2025

3

 

 

 

 

 

 

 

14/7/2025

3

 

 

 

 

 

 

 

15/7/2025

3

 

 

 

 

 

 

 

16/7/2025

3

 

 

 

 

 

 

 

17/7/2025

3

 

 

 

 

 

 

 

18/7/2025

3

 

 

 

 

 

 

 

19/7/2025

3

 

 

 

 

 

 

 

20/7/2025

3

 

 

 

 

 

 

 

21/7/2025

3

 

 

 

 

 

 

 

22/7/2025

3

 

 

 

 

 

 

 

23/7/2025

3

 

 

 

 

 

 

 

24/7/2025

3

 

 

 

 

 

 

 

25/7/2025

3

 

 

 

 

 

 

 

26/7/2025

3

 

 

 

 

 

 

 

27/7/2025

*

 

 

 

 

 

 

 

28/7/2025

3

 

 

 

 

 

 

 

29/7/2025

3

 

 

 

 

 

 

 

30/7/2025

3

 

 

 

 

 

 

 

31/7/2025

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¢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)#

1/7/2025

3

2/7/2025

3

 

 

 

 

 

 

 

3/7/2025

4

4/7/2025

3

5/7/2025

3

 

 

 

 

 

 

 

6/7/2025

3

7/7/2025

3

 

 

 

 

 

 

 

8/7/2025

3

9/7/2025

3

10/7/2025

3

11/7/2025

3

12/7/2025

3

13/7/2025

3

 

 

 

 

 

 

 

14/7/2025

3

 

 

 

 

 

 

 

15/7/2025

3

 

 

 

 

 

 

 

16/7/2025

3

 

 

 

 

 

 

 

17/7/2025

3

 

 

 

 

 

 

 

18/7/2025

3

 

 

 

 

 

 

 

19/7/2025

3

 

 

 

 

 

 

 

20/7/2025

3

 

 

 

 

 

 

 

21/7/2025

3

 

 

 

 

 

 

 

22/7/2025

4

 

 

 

 

 

 

 

23/7/2025

4

 

 

 

 

 

 

 

24/7/2025

4

 

 

 

 

 

 

 

25/7/2025

4

 

 

 

 

 

 

 

26/7/2025

4

 

 

 

 

 

 

 

27/7/2025

4

 

 

 

 

 

 

 

28/7/2025

4

 

 

 

 

 

 

 

29/7/2025

4

 

 

 

 

 

 

 

30/7/2025

4

 

 

 

 

 

 

 

31/7/2025

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¢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.