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 Condensers

Weighted by Flowrates of Individual Streams (March 2018)

Date	Maximum Outlet Temperature Rise (Deg. Celsius)
1/3/2018	*
2/3/2018	*
3/3/2018	*
4/3/2018	*
5/3/2018	*
6/3/2018	*
7/3/2018	*
8/3/2018	*
9/3/2018	*
10/3/2018	*
11/3/2018	*
12/3/2018	*
13/3/2018	*
14/3/2018	*
15/3/2018	*
16/3/2018	*
17/3/2018	7.4
18/3/2018	*
19/3/2018	*
20/3/2018	8.5
21/3/2018	7.0
22/3/2018	8.1
23/3/2018	8.0
24/3/2018	8.1
25/3/2018	8.1
26/3/2018	8.1
27/3/2018	8.1
28/3/2018	8.2
29/3/2018	8.2
30/3/2018	8.2
31/3/2018	8.1

Note: * - Unit L9 was not on load.

Total Residual Chlorine Level at C.W. Outfall No. 3 (March 2018)

Date of sampling	02/03/2018	16/03/2018	31/03/2018
Total Residual Chlorine, mg/L	*	*	0.35

Note: * - Uuit L9 was not on load.

Blowdown from Unit L9 Steam Turbine and HRSG to C.W. Outfall No. 3 (March 2018)

Source of discharge	HSRG	Steam Turbine
Date of sampling	23/03/2018	23/03/2018
Suspended Solid, mg/L	11	13
Grease & Oil, mg/L	<10	<10
Temperature, Deg. Celsius	33	32