Lamma Power Station Extension - Summary Results on Water Quality Monitoring

Maximum Outlet Temperature Rise (Deg. Celsius) of Cooling Water at C.W. Outfall No.3 Serving L9, L10 & L11 Condensers

Weighted by Flowrates of Individual Streams (October 2023)

Date	Maximum Outlet Temperature Rise (Deg. Celsius)
1/10/2023	5.8
2/10/2023	5.4
3/10/2023	5.7
4/10/2023	5.9
5/10/2023	5.5
6/10/2023	5.7
7/10/2023	6.3
8/10/2023	5.5
9/10/2023	5.8
10/10/2023	6.3
11/10/2023	6.3
12/10/2023	6.3
13/10/2023	6.8
14/10/2023	7.2
15/10/2023	6.5
16/10/2023	6.1
17/10/2023	5.9
18/10/2023	6.3
19/10/2023	6.1
20/10/2023	5.6
21/10/2023	6.0
22/10/2023	5.9
23/10/2023	5.8
24/10/2023	5.5
25/10/2023	5.5
26/10/2023	5.8
27/10/2023	5.6
28/10/2023	6.0
29/10/2023	5.5
30/10/2023	6.0
31/10/2023	6.0

Total Residual Chlorine Level at C.W. Outfall No. 3 (October 2023)

Date of sampling	13/10	27/10
Total Residual Chlorine, mg/L	0.40	0.20