David Leong - Appendix 1 - Environment Canterbury
David Leong - Appendix 1 - Environment Canterbury
David Leong - Appendix 1 - Environment Canterbury
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TONKIN & TAYLOR LTD<br />
<strong>Environment</strong>al and Engineering Consultants<br />
<br />
<br />
Hydropower Potential of State-Owned Dams in Queensland<br />
State Water Projects, Queensland, 1998-1999<br />
Senior Hydrologist<br />
Responsible for evaluating the hydroenergy potential of retro-fitting power stations to 42 existing weir and<br />
dam structures in Queensland, Australia for State Water Projects department, including identification of<br />
peaking potential, flooding effects, constraints on development and potential enhancements or operational<br />
modifications to increase energy generation. The structures comprised mainly irrigation weirs and dams,<br />
and a few water supply dams.<br />
Butwal Power Company Due Diligence, Nepal<br />
Confidential Client, 2002<br />
Senior Hydrologist<br />
Responsible for the assessment of hydroenergy output from existing power stations: Khimti 1 (60 MW),<br />
Jhimruk (12 MW) and Andikhola (5 MW) in Nepal for a due diligence assessment.<br />
• Southern Hydro Due Diligence, Australia<br />
Confidential Client, 1997-1999<br />
Senior Hydrologist<br />
Retained as an Independent hydrology/hydroenergy reviewer by confidential client in the funding of the<br />
purchase of a group of hydropower cascade schemes (total 500 MW) in Victoria, Australia, including the<br />
Eildon, Dartmouth, Kiewa, Rubicon and Cairn Curren stations.<br />
<br />
<br />
Lake Coleridge Hydropower Due Diligence<br />
Confidential Client, 1998<br />
Senior Hydrologist<br />
Due diligence investigations, incorporating detailed hydroenergy modelling, for the 37 MW Coleridge<br />
Power Station in the headwaters of the Rakaia River for confidential client. Investigations included the<br />
evaluation of various enhancement works and changes to current operational strategy.<br />
Wairua Falls Power Station Refurbishment<br />
Northpower Ltd<br />
Senior Engineer<br />
Established hydraulic performance characteristics for the intake barrage for the Wairua Falls Power Station<br />
(Northland Region), and designed a bypass gabion structure for extreme flood conditions<br />
• Kioreweku Hydro Scheme Feasibility<br />
Bay of Plenty Electricity<br />
Senior Hydrologist / Hydraulic Engineer<br />
Responsible for hydroenergy assessment, tailrace design optimisation, feasibility design of intake gate<br />
structure and energy dissipating structures for the 13 MW Kioreweku hydro scheme on the Rangitaiki<br />
River (Bay of Plenty), including the design of an artificial canoe course proposed as an environmental<br />
mitigation measure.<br />
<br />
Tailwater Lowering Cost Assessment<br />
Mighty River Power Ltd, 2001<br />
Project Manager and Senior Engineer<br />
Project managed a re-assessment of construction costs and an appraisal of environmental issues for<br />
lowering the tailwater (in order to increase generating head) at three of Mighty River Power’s existing<br />
power stations, Aratiatia, Karapiro and Atiamuri.<br />
• Highbank Power Station Hydroenergy Assessment<br />
Mid-<strong>Canterbury</strong> Irrigation Enhancement Society<br />
Senior Hydrologist<br />
Assessed potential energy output enhancement at the 25 MW Highbank Power Station from optimised<br />
irrigation race operations and through construction of additional stream intakes and a large storage dam<br />
within one of the system sources. Testing of variables such as dam storage, irrigation demand, intake<br />
capacities and operational strategy.<br />
6<br />
<strong>David</strong> <strong>Leong</strong>
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