BRILLIANT EXPANSION PROJECT

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1 BRILLIANT EXPANSION PROJECT Utilizes power tunnel 120 MW Capacity 500 GWh Energy Transmission link to Brilliant Terminal Station Will reduce TGP downstream Intake Transmission Link Transmission Link Extent of Project Works Access Road Tailrace Improvements

2 BRILLIANT EXPANSION PROJECT Project Contractor Design Engineer/ Electro-Mechanical Contractor Civil Contractor Sponsor International Civil Engineering AB Sub-Contractor ALSTOM Turbine/Generator

3 BRILLIANT EXPANSION PROJECT Tunnel Excavation POWERHOU SE ACCESS TUNNEL PORTAL WATER TREATMENT PLANT: COMMISSIONING, OPERATIONAL SERVICE TUNNEL: EXCAVATION ADIT TUNNEL POWER TUNNEL: 20 m EXCAVATED TO 408 m POWER TUNNEL: UPSTREAM ADVANCED 4.5 m DOWNSTEAM ADVANCED 2 m ACCESS TUNNEL ACCESS SHAFT: EXCAVATION IN PROGRESS INTAK E ROCK EXCAVATION: BRENCH AT EL 453 m 20% WATER SUPPLY PIPELINE TUNNEL EXCAVATION PROGRESS DATE 16-Apr-04 TUNNEL TOTAL LENGTH EXCAVATED TO DATE CROSS SECTION AREA m m m2 Access Adit * 20.5 Pow er 160 Downstream Transition 20 m excavated to 408m 130 Service *Note: Centre line distance measured from intersection with Access Tunnel CONSTRUCTION PROGRESS 16 APRIL 2004 FIGURE 3 TUNNEL EXCAVATION

4 BRILLIANT EXPANSION PROJECT house Excavation Section SHOTCRETE, ROCKBOLTING AND DRAINAGE HOLES TO EL. 408 m EXCAVATION D TO ELEVATION 428 m SPIRAL CASE : EXC TO 408m, EXCAVATION TO ELEVATION 408 m POWER TUNNEL EXCAVATION: TO 408 m SPIRAL CASE : EXC TO 408m, TOWER CRANE FOUNDATION CONSTRUCTI ON IN PROGRESS ROCK PLUG DRILLING AND BLASTING ELEV 428 m ELEV 414 m ELEV 408 m ELEV m ELEV m EXCAVATIO N TO ELEVATION 408 m ELEV 443 m SERVICE TUNNEL DRILLING AND BLASTING POWER TUNNEL EXCAVATION SHOTCRETE, ROCKBOLTING AND DRAINAGE HOLES EXCAVATION TO EL. 408m TO EL. DRILLING 408 m TO EL. 401 m POWERHOUSE EXCAVATION PLAN POWERHOUSE EXCAVATION SECTION CONSTRUCTION PROGRESS 16 APRIL 2004 FIGURE 2 - POWERHOUSE EXCAVATION

5 BRILLIANT EXPANSION PROJECT Major Milestones September Begin drilling for excavation of powerhouse bench April Complete first placement of structural concrete greater than 50 m 3 for the draft tube foundation May Complete placement of concrete for draft tube slab to El. 400 August 2004 November 2004 February 2005 May 2005 September 2005 December 2005 March 2006 June 2006 August 2006 September 2006 October Complete placement of concrete for Turbine Floor - Start erection steel superstructure for service bay - Start installation of stay ring - Start installation of upper pit liner - Turbine and generator pit available shaft free - Stacking lamination for stator completed - Winding installation for stator completed - Ready to turn - Guaranteed Date - Substantial Completion Milestone Date - Facility Completion Date

6 Spring 2003 Access road construction begins

7 Summer Access road construction continues and powerhouse excavation begins

8 Fall 2003 house excavation continues

9 Winter 2003 and access tunnel excavation begins

10 January Work continue on tunnel excavation, sheet pile wall construction and tailrace area work

11 February 2004 tunnel excavation begins

12 March Work continues and draft tube construction begins

13 April Access tunnel and adit tunnel completed tailrace area berm removed and work continues on power tunnel excavation