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)

4/1/2026

50

47

46

19

4/1/2026

15:00 - 15:59

53

55

48

10/1/2026

54

49

49

18

16:00 - 16:59

59

52

49

16/1/2026

46

49

43

29

17:00 - 17:59

51

55

55

22/1/2026

55

61

56

38

10/1/2026

15:00 - 15:59

74

54

40

28/1/2026

44

50

37

58

16:00 - 16:59

40

41

37

 

 

 

 

 

17:00 - 17:59

40

42

43

 

16/1/2026

15:00 - 15:59

35

61

45

16:00 - 16:59

37

69

47

17:00 - 17:59

42

47

41

 

22/1/2026

15:00 - 15:59

75

89

78

 

16:00 - 16:59

69

103

78

 

17:00 - 17:59

76

107

85

 

28/1/2026

15:00 - 15:59

60

94

48

 

16:00 - 16:59

51

69

45

 

 

 

 

 

 

17:00 - 17:59

48

47

40

 

 

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

Date

Daily Maximum Stack NOx concentration (mg/Nm3)#

1/1/2026

*

2/1/2026

81^

3/1/2026

*

4/1/2026

*

5/1/2026

78

6/1/2026

79

7/1/2026

75

8/1/2026

79

9/1/2026

80

10/1/2026

*

11/1/2026

*

12/1/2026

76

13/1/2026

80

14/1/2026

76

15/1/2026

78

16/1/2026

80

17/1/2026

*

18/1/2026

*

19/1/2026

74

20/1/2026

75

21/1/2026

78

22/1/2026

78

23/1/2026

74

24/1/2026

77

25/1/2026

74

26/1/2026

74

 

 

 

 

 

 

 

27/1/2026

72

 

 

 

 

 

 

 

28/1/2026

70

 

 

 

 

 

 

 

29/1/2026

73

 

 

 

 

 

 

 

30/1/2026

77

 

 

 

 

 

 

 

31/1/2026

71

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)#

1/1/2026

*

2/1/2026

*

3/1/2026

*

4/1/2026

*

5/1/2026

*

6/1/2026

*

7/1/2026

*

8/1/2026

*

9/1/2026

*

10/1/2026

*

11/1/2026

*

12/1/2026

*

13/1/2026

*

14/1/2026

*

15/1/2026

*

16/1/2026

*

17/1/2026

*

18/1/2026

*

19/1/2026

*

20/1/2026

*

21/1/2026

*

22/1/2026

*

23/1/2026

*

24/1/2026

*

25/1/2026

*

26/1/2026

*

 

 

 

 

 

 

 

27/1/2026

*

 

 

 

 

 

 

 

28/1/2026

*

 

 

 

 

 

 

 

29/1/2026

*

 

 

 

 

 

 

 

30/1/2026

*

 

 

 

 

 

 

 

31/1/2026

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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)#

1/1/2026

5^

2/1/2026

15^

3/1/2026

15^

4/1/2026

9^

5/1/2026

7^

 

 

 

 

 

 

 

6/1/2026

14^

 

 

 

 

 

 

 

7/1/2026

11^

8/1/2026

4

9/1/2026

8^

10/1/2026

5^

11/1/2026

4

12/1/2026

6^

 

 

 

 

 

 

 

13/1/2026

5^

 

 

 

 

 

 

 

14/1/2026

5^

 

 

 

 

 

 

 

15/1/2026

5^

 

 

 

 

 

 

 

16/1/2026

5^

 

 

 

 

 

 

 

17/1/2026

4

 

 

 

 

 

 

 

18/1/2026

4

 

 

 

 

 

 

 

19/1/2026

4

 

 

 

 

 

 

 

20/1/2026

4

 

 

 

 

 

 

 

21/1/2026

5^

 

 

 

 

 

 

 

22/1/2026

11^

 

 

 

 

 

 

 

23/1/2026

4

 

 

 

 

 

 

 

24/1/2026

*

 

 

 

 

 

 

 

25/1/2026

*

 

 

 

 

 

 

 

26/1/2026

11^

 

 

 

 

 

 

 

27/1/2026

2

 

 

 

 

 

 

 

28/1/2026

7^

 

 

 

 

 

 

 

29/1/2026

3

 

 

 

 

 

 

 

30/1/2026

3

 

 

 

 

 

 

 

31/1/2026

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 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)#

1/1/2026

6^

2/1/2026

6^

3/1/2026

6^

4/1/2026

6^

 

 

 

 

 

 

 

5/1/2026

6^

6/1/2026

6^

 

 

 

 

 

 

 

7/1/2026

6^

8/1/2026

5^

9/1/2026

5^

10/1/2026

6^

11/1/2026

6^

12/1/2026

6^

 

 

 

 

 

 

 

13/1/2026

6^

 

 

 

 

 

 

 

14/1/2026

5^

 

 

 

 

 

 

 

15/1/2026

5^

 

 

 

 

 

 

 

16/1/2026

4

 

 

 

 

 

 

 

17/1/2026

5^

 

 

 

 

 

 

 

18/1/2026

5^

 

 

 

 

 

 

 

19/1/2026

5^

 

 

 

 

 

 

 

20/1/2026

5^

 

 

 

 

 

 

 

21/1/2026

5^

 

 

 

 

 

 

 

22/1/2026

6^

 

 

 

 

 

 

 

23/1/2026

6^

 

 

 

 

 

 

 

24/1/2026

7^

 

 

 

 

 

 

 

25/1/2026

6^

 

 

 

 

 

 

 

26/1/2026

6^

 

 

 

 

 

 

 

27/1/2026

5^

 

 

 

 

 

 

 

28/1/2026

6^

 

 

 

 

 

 

 

29/1/2026

6^

 

 

 

 

 

 

 

30/1/2026

5^

 

 

 

 

 

 

 

31/1/2026

5^

 

 

 

 

 

 

 

 

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.