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 Condensers

Weighted by Flowrates of Individual Streams (May 2021)

Date	Maximum Outlet Temperature Rise (Deg. Celsius)
1/5/2021	7.1
2/5/2021	7.1
3/5/2021	7.0
4/5/2021	7.0
5/5/2021	7.0
6/5/2021	7.0
7/5/2021	7.1
8/5/2021	7.2
9/5/2021	7.2
10/5/2021	7.1
11/5/2021	7.2
12/5/2021	7.2
13/5/2021	7.2
14/5/2021	7.2
15/5/2021	7.3
16/5/2021	7.3
17/5/2021	7.2
18/5/2021	7.2
19/5/2021	7.2
20/5/2021	7.2
21/5/2021	7.2
22/5/2021	6.5
23/5/2021	7.2
24/5/2021	7.2
25/5/2021	7.2
26/5/2021	7.2
27/5/2021	7.2
28/5/2021	7.2
29/5/2021	8.3
30/5/2021	8.3
31/5/2021	7.3

Total Residual Chlorine Level at C.W. Outfall No. 3 (May 2021)

Date of sampling	07/05/2021	21/05/2021
Total Residual Chlorine, mg/L	0.30	0.40