Appendix D                Manual Noise Monitoring Results for November 2006

 

 

Site:                   Lamma Power Station Extension Transmission System

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

Noise Equipment Used:   Rion NL-31 sound level meter and Rion NC-74 sound level calibrator                        

Wind Speed Equipment:   Extech Instruments 45118

Last Calibration Date:  Rion NL-31 sound level meter      – 11/10/2006

                        Rion NC-74 sound level calibrator – 31/10/2006

 

 

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)

03/11/2006

14:00-14:30

48.4

54.9

--

75

<5

07/11/2006

10:00-10:30

48.4

54.9

--

75

<5

10/11/2006

14:00-14:30

48.3

54.9

--

75

<5

14/11/2006

10:00-10:30

48.6

54.9

--

75

<5

17/11/2006

14:00-14:30

48.3

54.9

--

75

<5

21/11/2006

10:00-10:30

48.9

54.9

--

75

<5

24/11/2006

14:00-14:30

48.6

54.9

--

75

<5

28/11/2006

10:00-10:30

49.7

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)

03/11/2006

14:40-15:10

49.0

54.9

--

75

<5

07/11/2006

10:40-11:10

49.2

54.9

--

75

<5

10/11/2006

14:40-15:10

49.2

54.9

--

75

<5

14/11/2006

10:40-11:10

49.5

54.9

--

75

<5

17/11/2006

14:40-15:10

49.3

54.9

--

75

<5

21/11/2006

10:40-11:10

49.4

54.9

--

75

<5

24/11/2006

14:40-15:10

49.6

54.9

--

75

<5

28/11/2006

10:40-11:10

50.3

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.