Appendix E Continuous Noise Monitoring Results for August 2025

Site: Lamma Power Station Extension Construction

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: B&K 2250 sound level meters and B&K 4231 sound

Level calibrator

Lab. Calibration Date: B&K 2250 sound level meters - 18/6/2024 (Ash Lagoon)

7/5/2025 (Ching Lam)

B&K 4231 calibrator (7/5/2025)

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
1/08/2025	07:00-19:00	60	60	75	40	35	70
1/08/2025	19:00-23:00	40	40	60	45	37	60
1/08/2025	23:00-07:00	---	---	45	44	35	45
2/08/2025	07:00-19:00	37	37	75	43	38	70
2/08/2025	19:00-23:00	43	37	60	42	36	60
2/08/2025	23:00-07:00	45	40	45	45	42	45
3/08/2025	07:00-23:00	55	43	60	50	40	60
3/08/2025	23:00-07:00	43	43	45	45	43	45
4/08/2025	07:00-19:00	55	51	75	---	---	70
4/08/2025	19:00-23:00	43	43	60	49	46	60
4/08/2025	23:00-07:00	30	30	45	45	41	45
5/08/2025	07:00-19:00	54	49	75	50	44	70
5/08/2025	19:00-23:00	---	---	60	43	42	60
5/08/2025	23:00-07:00	44	41	45	45	39	45
6/08/2025	07:00-19:00	31	31	75	44	35	70
6/08/2025	19:00-23:00	30	30	60	46	40	60
6/08/2025	23:00-07:00	40	40	45	43	37	45
7/08/2025	07:00-19:00	41	41	75	43	39	70
7/08/2025	19:00-23:00	44	42	60	50	43	60
7/08/2025	23:00-07:00	43	39	45	45	35	45
8/08/2025	07:00-19:00	---	---	75	38	36	70
8/08/2025	19:00-23:00	43	43	60	38	38	60
8/08/2025	23:00-07:00	19	19	45	38	33	45
9/08/2025	07:00-19:00	---	---	75	30	30	70
9/08/2025	19:00-23:00	42	42	60	41	33	60
9/08/2025	23:00-07:00	42	40	45	41	34	45
10/08/2025	07:00-23:00	51	40	60	42	35	60
10/08/2025	23:00-07:00	41	39	45	41	29	45
11/08/2025	07:00-19:00	---	---	75	30	30	70
11/08/2025	19:00-23:00	---	---	60	35	34	60
11/08/2025	23:00-07:00	45	37	45	39	35	45
12/08/2025	07:00-19:00	50	48	75	37	32	70
12/08/2025	19:00-23:00	---	---	60	36	36	60
12/08/2025	23:00-07:00	---	---	45	39	37	45
13/08/2025	07:00-19:00	---	---	75	33	33	70
13/08/2025	19:00-23:00	39	37	60	45	42	60
13/08/2025	23:00-07:00	43	38	45	45	33	45
14/08/2025	07:00-19:00	59	52	75	49	46	70
14/08/2025	19:00-23:00	37	30	60	---	---	60
14/08/2025	23:00-07:00	36	30	45	---	---	45
15/08/2025	07:00-19:00	---	---	75	---	---	70
15/08/2025	19:00-23:00	42	35	60	---	---	60
15/08/2025	23:00-07:00	37	34	45	---	---	45
16/08/2025	07:00-19:00	---	---	75	---	---	70
16/08/2025	19:00-23:00	40	35	60	---	---	60
16/08/2025	23:00-07:00	44	38	45	---	---	45
17/08/2025	07:00-23:00	47	34	60	---	---	60
17/08/2025	23:00-07:00	44	37	45	---	---	45
18/08/2025	07:00-19:00	---	---	75	---	---	70
18/08/2025	19:00-23:00	43	33	60	---	---	60
18/08/2025	23:00-07:00	40	38	45	---	---	45
19/08/2025	07:00-19:00	56	49	75	---	---	70
19/08/2025	19:00-23:00	41	36	60	---	---	60
19/08/2025	23:00-07:00	---	---	45	---	---	45
20/08/2025	07:00-19:00	---	---	75	---	---	70
20/08/2025	19:00-23:00	44	36	60	---	---	60
20/08/2025	23:00-07:00	45	32	45	---	---	45
21/08/2025	07:00-19:00	50	47	75	---	---	70
21/08/2025	19:00-23:00	---	---	60	---	---	60
21/08/2025	23:00-07:00	45	33	45	---	---	45
22/08/2025	07:00-19:00	50	49	75	---	---	70
22/08/2025	19:00-23:00	33	33	60	---	---	60
22/08/2025	23:00-07:00	35	28	45	---	---	45
23/08/2025	07:00-19:00	---	---	75	---	---	70
23/08/2025	19:00-23:00	48	36	60	---	---	60
23/08/2025	23:00-07:00	37	32	45	---	---	45
24/08/2025	07:00-23:00	53	36	60	---	---	60
24/08/2025	23:00-07:00	38	33	45	---	---	45
25/08/2025	07:00-19:00	---	---	75	---	---	70
25/08/2025	19:00-23:00	38	37	60	---	---	60
25/08/2025	23:00-07:00	42	34	45	---	---	45
26/08/2025	07:00-19:00	---	---	75	40	34	70
26/08/2025	19:00-23:00	44	34	60	37	34	60
26/08/2025	23:00-07:00	41	34	45	40	30	45
27/08/2025	07:00-19:00	56	56	75	35	28	70
27/08/2025	19:00-23:00	46	36	60	37	31	60
27/08/2025	23:00-07:00	41	35	45	39	31	45
28/08/2025	07:00-19:00	---	---	75	30	30	70
28/08/2025	19:00-23:00	43	31	60	38	31	60
28/08/2025	23:00-07:00	40	34	45	45	37	45
29/08/2025	07:00-19:00	48	42	75	49	40	70
29/08/2025	19:00-23:00	39	37	60	52	44	60
29/08/2025	23:00-07:00	42	33	45	45	36	45
30/08/2025	07:00-19:00	---	---	75	43	36	70
30/08/2025	19:00-23:00	40	36	60	38	32	60
30/08/2025	23:00-07:00	---	---	45	44	41	45
31/08/2025	07:00-23:00	40	36	60	43	36	60
31/08/2025	23:00-07:00	43	37	45	44	41	45

Note:

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

b. Continuous noise monitoring was also carried out at holidays & evening-time (07:00-23:00 hrs on holidays and 19:00-23:00 hrs on all other days) and night-time (23:00-07:00 hrs of next day).

c. From 14 to 25 August, the calculated noise level at NSR at the school within Tai Wan San Tsuen were discarded due to a malfunctioning analog input card. The data resumed on 26 August following the replacement of the faulty card.