Appendix E.1              Continuous Noise Monitoring Results for October 2006

 

 

Site:                  Lamma Power Station Extension – Superstructure

                       and E&M Works

Measurement Location:  Ash Lagoon and Ching Lam

Measurement Parameter: 30-min Leq (07:00-19:00 hrs on normal weekdays)

                       5-min Leq (07:00-23:00 hrs on holidays and

                       19:00-23:00 hrs on all other days, and 23:00-

                       07:00 hrs of next day)

Noise Equipment Used:  Rion NA-27 (Ash Lagoon) and B&K 2250 (Ching

                       Lam) sound level meters and Rion NC-74 sound

                       level calibrator

Last Calibration Date: Rion NA-27 sound level meter - 17/02/2005

                       B&K 2250 sound level meter   - 20/06/2006

                       Rion NC-74 calibrator        - 13/03/2006

 

 

Date

Time

Calculated

Noise

Level at

NSR at Long

Tsai

Tsuen/Hung

Shing Ye

(dB(A))

Limit

Noise

Level

(dB(A))

Calculated

Noise

Level at

NSR at the

school

within Tai

Wan San

Tsuen

(dB(A))

Limit

Noise

Level

(dB(A))

Max

Avg

Max

Avg

01/10/2006

07:00-23:00

40

32

60

35

27

60

01/10/2006

23:00-07:00

33

29

45

28

24

45

02/10/2006

07:00-23:00

41

35

60

36

31

60

02/10/2006

23:00-07:00

39

33

45

32

27

45

03/10/2006

07:00-19:00

38

38

75

33

33

70

03/10/2006

19:00-23:00

--

--

60

--

--

60

03/10/2006

23:00-07:00

--

--

45

--

--

45

04/10/2006

07:00-19:00

--

--

75

--

--

70

04/10/2006

19:00-23:00

--

--

60

--

--

60

04/10/2006

23:00-07:00

42

33

45

37

29

45

05/10/2006

07:00-19:00

--

--

75

--

--

70

05/10/2006

19:00-23:00

--

--

60

--

--

60

05/10/2006

23:00-07:00

32

27

45

27

22

45

06/10/2006

07:00-19:00

--

--

75

--

--

70

06/10/2006

19:00-23:00

--

--

60

--

--

60

06/10/2006

23:00-07:00

36

29

45

31

25

45

07/10/2006

07:00-23:00

39

37

60

34

32

60

07/10/2006

23:00-07:00

33

28

45

29

24

45

08/10/2006

07:00-23:00

37

35

60

33

31

60

08/10/2006

23:00-07:00

34

29

45

29

24

45

09/10/2006

07:00-19:00

39

38

75

34

33

70

09/10/2006

19:00-23:00

--

--

60

--

--

60

09/10/2006

23:00-07:00

37

32

45

33

28

45

10/10/2006

07:00-19:00

33

33

75

28

28

70

10/10/2006

19:00-23:00

30

30

60

43

41

60

10/10/2006

23:00-07:00

--

--

45

40

35

45

11/10/2006

07:00-19:00

--

--

75

32

29

70

11/10/2006

19:00-23:00

--

--

60

22

22

60

11/10/2006

23:00-07:00

--

--

45

38

32

45

12/10/2006

07:00-19:00

--

--

75

--

--

70

12/10/2006

19:00-23:00

--

--

60

--

--

60

12/10/2006

23:00-07:00

--

--

45

27

23

45

13/10/2006

07:00-19:00

--

--

75

--

--

70

13/10/2006

19:00-23:00

--

--

60

--

--

60

13/10/2006

23:00-07:00

--

--

45

30

26

45

14/10/2006

07:00-19:00

--

--

75

--

--

70

14/10/2006

19:00-23:00

31

29

60

--

--

60

14/10/2006

23:00-24:00

36

33

45

27

26

45

 

Note: “—-“ represents the measured noise monitoring data lower than the established notional background level/discarded under strong wind.

 


 










Appendix E.2
Manual Noise Monitoring Results for October 2006

 

 

Site:                   Lamma Power Station Extension Transmission System

Measurement Parameter:  30-min Leq (07:00-19:00 hrs on normal weekdays)

Noise Equipment Used:   B&K 2238 sound level meter and B&K 4231 sound level calibrator                        

Wind Speed Equipment:   Extech Instruments 45118

Last Calibration Date:  B&K 2238 sound level meter        – 16/01/2006

                        B&K 4231 sound level calibrator   – 16/01/2006

 

 

Measurement Location:  N4 Pak Kok Tsui No.2

 

Date

Time

Measured Noise Level (dB(A))

Notional Background Noise Level (dB(A))

Corrected Noise Level (dB(A))

Limit Noise Level (dB(A))

Wind Speed (m/s)

03/10/2006

10:00-10:30

48.8

54.9

--

75

<5

06/10/2006

14:00-14:30

48.9

54.9

--

75

<5

10/10/2006

10:00-10:30

52.0

54.9

--

75

<5

13/10/2006

14:00-14:30

49.3

54.9

--

75

<5

17/10/2006

10:00-10:30

48.2

54.9

--

75

<5

20/10/2006

14:00-14:30

48.3

54.9

--

75

<5

24/10/2006

10:00-10:30

48.1

54.9

--

75

<5

27/10/2006

14:00-14:30

49.1

54.9

--

75

<5

31/10/2006

10:00-10:30

48.6

54.9

--

75

<5

 

 

Measurement Location:  N5 – Pak Kok Tsui No.8

 

Date

Time

Measured Noise Level (dB(A))

Notional Background Noise Level (dB(A))

Corrected Noise Level (dB(A))

Limit Noise Level (dB(A))

Wind Speed (m/s)

03/10/2006

10:40-11:10

50.6

54.9

--

75

<5

06/10/2006

14:40-15:10

51.1

54.9

--

75

<5

10/10/2006

10:40-11:10

52.4

54.9

--

75

<5

13/10/2006

14:40-15:10

50.9

54.9

--

75

<5

17/10/2006

10:40-11:10

49.2

54.9

--

75

<5

20/10/2006

14:40-15:10

50.2

54.9

--

75

<5

24/10/2006

10:40-11:10

49.1

54.9

--

75

<5

27/10/2006

14:40-15:10

49.3

54.9

--

75

<5

31/10/2006

10:40-11:10

49.7

54.9

--

75

<5

 

Note:

1.                The noise generated from local noisy events (e.g. dog barking, passing-by pedestrians, motor vehicle, aeroplane, helicopter, etc.) was manually removed during measurement as far as practicable.

 

2.                “--“ represents the measured noise monitoring data lower than the established notional background level.