Appendix E.1 Continuous Noise Monitoring Results for September 2004

Site: Lamma Power Station Extension – Superstructure

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 2238F (Ching

Lam) sound level meters and Rion NC-74 sound

level calibrator

Last Calibration Date: Rion NA-27 sound level meter - 25/02/2003

B&K 2238F sound level meter - 13/07/2004

Rion NC-74 calibrator - 23/03/2004

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
01/09/2004	07:00-19:00	47	44	75	43	40	70
01/09/2004	19:00-23:00	34	27	60	29	22	60
01/09/2004	23:00-07:00	36	33	45	31	29	45
02/09/2004	07:00-19:00	46	44	75	41	38	70
02/09/2004	19:00-23:00	44	44	60	40	39	60
02/09/2004	23:00-07:00	43	35	45	38	31	45
03/09/2004	07:00-19:00	45	44	75	39	37	70
03/09/2004	19:00-23:00	46	44	60	40	39	60
03/09/2004	23:00-07:00	42	35	45	38	30	45
04/09/2004	07:00-19:00	24	24	75	20	20	70
04/09/2004	19:00-23:00	39	39	60	35	34	60
04/09/2004	23:00-07:00	42	34	45	38	29	45
05/09/2004	07:00-23:00	46	44	60	39	37	60
05/09/2004	23:00-07:00	39	34	45	34	29	45
06/09/2004	07:00-19:00	45	43	75	39	37	70
06/09/2004	19:00-23:00	42	42	60	38	37	60
06/09/2004	23:00-07:00	36	31	45	31	26	45
07/09/2004	07:00-19:00	44	41	75	39	35	70
07/09/2004	19:00-23:00	44	42	60	40	37	60
07/09/2004	23:00-07:00	33	29	45	29	25	45
08/09/2004	07:00-19:00	46	43	75	41	37	70
08/09/2004	19:00-23:00	43	41	60	38	36	60
08/09/2004	23:00-07:00	45	34	45	40	30	45
09/09/2004	07:00-19:00	46	44	75	39	35	70
09/09/2004	19:00-23:00	43	42	60	39	36	60
09/09/2004	23:00-07:00	40	31	45	35	27	45
10/09/2004	07:00-19:00	43	41	75	36	31	70
10/09/2004	19:00-23:00	27	25	60	--	--	60
10/09/2004	23:00-07:00	39	32	45	34	27	45
11/09/2004	07:00-19:00	45	44	75	36	29	70
11/09/2004	19:00-23:00	45	41	60	36	30	60
11/09/2004	23:00-07:00	39	31	45	34	26	45
12/09/2004	07:00-23:00	46	40	60	40	30	60
12/09/2004	23:00-07:00	40	32	45	36	27	45
13/09/2004	07:00-19:00	42	41	75	37	35	70
13/09/2004	19:00-23:00	31	29	60	27	25	60
13/09/2004	23:00-07:00	44	37	45	39	31	45
14/09/2004	07:00-19:00	46	43	75	39	36	70
14/09/2004	19:00-23:00	41	41	60	36	36	60
14/09/2004	23:00-07:00	38	33	45	34	28	45
15/09/2004	07:00-19:00	46	42	75	38	35	70
15/09/2004	19:00-23:00	42	41	60	37	36	60
15/09/2004	23:00-07:00	36	32	45	32	27	45
16/09/2004	07:00-19:00	41	39	75	35	33	70
16/09/2004	19:00-23:00	34	27	60	29	22	60
16/09/2004	23:00-07:00	39	34	45	34	30	45
17/09/2004	07:00-19:00	45	42	75	37	33	70
17/09/2004	19:00-23:00	39	30	60	27	22	60
17/09/2004	23:00-07:00	--	--	45	39	32	45
18/09/2004	07:00-19:00	--	--	75	41	35	70
18/09/2004	19:00-23:00	42	35	60	35	29	60
18/09/2004	23:00-07:00	37	33	45	33	28	45
19/09/2004	07:00-23:00	47	43	60	42	36	60
19/09/2004	23:00-07:00	45	39	45	37	32	45
20/09/2004	07:00-19:00	46	44	75	38	35	70
20/09/2004	19:00-23:00	43	40	60	28	25	60
20/09/2004	23:00-07:00	42	36	45	36	30	45
21/09/2004	07:00-19:00	43	40	75	37	33	70
21/09/2004	19:00-23:00	44	39	60	39	35	60
21/09/2004	23:00-07:00	37	32	45	33	28	45
22/09/2004	07:00-19:00	47	43	75	40	36	70
22/09/2004	19:00-23:00	37	35	60	32	31	60
22/09/2004	23:00-07:00	39	32	45	34	27	45
23/09/2004	07:00-19:00	48	46	75	40	37	70
23/09/2004	19:00-23:00	46	46	60	39	36	60
23/09/2004	23:00-07:00	38	33	45	33	29	45
24/09/2004	07:00-19:00	50	46	75	40	37	70
24/09/2004	19:00-23:00	44	42	60	39	36	60
24/09/2004	23:00-07:00	35	32	45	31	28	45
25/09/2004	07:00-19:00	48	45	75	37	35	70
25/09/2004	19:00-23:00	48	45	60	39	36	60
25/09/2004	23:00-07:00	39	33	45	34	30	45
26/09/2004	07:00-23:00	48	44	60	35	33	60
26/09/2004	23:00-07:00	37	32	45	32	27	45
27/09/2004	07:00-19:00	46	43	75	39	34	70
27/09/2004	19:00-23:00	34	33	60	29	27	60
27/09/2004	23:00-07:00	36	31	45	31	26	45
28/09/2004	07:00-19:00	47	43	75	33	29	70
28/09/2004	19:00-23:00	38	38	60	33	33	60
28/09/2004	23:00-07:00	44	36	45	34	29	45
29/09/2004	07:00-23:00	38	35	60	32	30	60
29/09/2004	23:00-07:00	35	32	45	31	28	45
30/09/2004	07:00-19:00	45	43	75	38	35	70
30/09/2004	19:00-23:00	40	35	60	35	30	60
30/09/2004	23:00-07:00	38	34	45	33	29	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 September 2004

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: Sper Scientific anemometer 840003

Last Calibration Date: Rion NL-31 sound level meter – 08/07/2004

Rion NC-74 sound level calibrator – 09/08/2004

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)
03/09/2004	10:00-10:30	50.2	54.9	--	75	<5
07/09/2004	14:00-14:30	53.8	54.9	--	75	<5
10/09/2004	10:00-10:30	56.2	54.9	50.3	75	<5
14/09/2004	14:00-14:30	60.4	54.9	59.0	75	<5
17/09/2004	10:00-10:30	55.6	54.9	47.3	75	<5
21/09/2004	14:00-14:30	50.7	54.9	--	75	<5
24/09/2004	10:00-10:30	52.3	54.9	--	75	<5
28/09/2004	14:00-14:30	52.7	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)
03/09/2004	10:35–11:05	61.3	54.9	60.2	75	<5
07/09/2004	14:40–15:10	55.8	54.9	48.5	75	<5
10/09/2004	10:40–11:10	55.7	54.9	48.0	75	<5
14/09/2004	14:40–15:10	59.7	54.9	58.0	75	<5
17/09/2004	10:40–11:10	54.2	54.9	--	75	<5
21/09/2004	14:40–15:10	58.6	54.9	56.2	75	<5
24/09/2004	10:40–11:10	64.2	54.9	63.7	75	<5
28/09/2004	14:40–15:10	53.7	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.