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 (January 2007)

Date	Maximum Outlet Temperature Rise (Deg. Celsius)
01/01/2007	8.1
02/01/2007	8.5
03/01/2007	8.5
04/01/2007	8.5
05/01/2007	8.5
06/01/2007	8.5
07/01/2007	8.1
08/01/2007	8.5
09/01/2007	8.5
10/01/2007	8.6
11/01/2007	8.6
12/01/2007	N.A.*
13/01/2007	N.A.*
14/01/2007	N.A.*
15/01/2007	N.A.*
16/01/2007	N.A.*
17/01/2007	N.A.*
18/01/2007	N.A.*
19/01/2007	N.A.*
20/01/2007	N.A.*
21/01/2007	N.A.*
22/01/2007	N.A.*
23/01/2007	N.A.*
24/01/2007	N.A.*
25/01/2007	9.4
26/01/2007	8.6
27/01/2007	8.3
28/01/2007	7.8
29/01/2007	8.3
30/01/2007	7.8
31/01/2007	8.7

Total Residual Chlorine Level at C.W. Outfall No. 3 (January 2007)

Date of sampling	03/01/2007	17/1/2007	26/1/2007
Total Residual Chlorine, mg/L	0.25	N.A.*	0.30

Blowdown from Unit L9 Steam Turbine and HRSG to C.W. Outfall No. 3 (January 2007)

Date of sampling	12/1/2007	12/1/2007
Source of Discharge	HSRG	Steam Turbine
Suspended Solid, mg/L	8	8
Grease & Oil, mg/L	<10	<10
Temperature, Deg. Celsius	32	34

Note:

1. * Unit L9 was not on load.