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Quartzsite, Arizona

Wednesday, November 23, 2011

EnviroMission engages Terracon for solar tower north of Quartzsite

EnviroMission Engages Terracon to Provide Initial Geotechnical Engineering Services for
Solar Tower Project north of Quartzsite

OLATHE, Kan. --- Terracon has been engaged by EnviroMission to provide initial geotechnical
engineering analysis, geo-seismic analysis and geotechnical consulting services for the Solar
Tower power station development in Arizona.

Terracon’s reports will inform and support Solar Tower front end engineering and design (FEED).
EnviroMission plans to build a major infrastructure power station that will use air heated by the
sun to drive turbines to generate enough renewable energy to power 150,000 homes in Arizona
and California. The iconic design will have a vast greenhouse with a tall central tower structure
that will be almost twice as tall as the Empire State Building. The proposed Solar Tower will offset 1 million metric tons of greenhouse gases per year and will abate the use of up to 1 billion gallons of potable water annually.
“Terracon is pleased to be a part of this ambitious and forward-thinking project from the ground
up,” said David Gaboury, P.E., Terracon President and CEO. “The solar tower technology should
offer significant advantages and produce clean, renewable power. We are proud to be a part of
EnviroMission’s vision.”

The following Terracon expertise is available to EnviroMission for future geotechnical engineering
services and reports:
• Subsurface Exploration and Testing
• Geophysical Testing
• Geotechnical and Materials Laboratory Testing
• Foundation Analysis and Design for Shallow and Deep Foundations
• In-situ Testing and Performance Monitoring
• Dynamic Analysis and Evaluation
• Soil Stabilization and Ground Improvement
• Pavement Evaluation and Design, Subgrade Evaluation and Material Evaluation

The preliminary geotechnical engineering report prepared by Terracon in October 2011 will
provide the basis for a further geotechnical engineering study planned for first quarter 2012 and
the final geotechnical engineering report for final design and construction.
“Terracon’s reports will contribute to important geotechnical analysis that will go to the heart of all
site-specific Solar Tower engineering and design decisions,” said Roger Davey, EnviroMission
chief executive. “EnviroMission engaged Terracon to bring the highest standard of geotechnical
survey and due diligence to ensure every engineering and design decision made by
EnviroMission’s executive project engineers is supported by technically accurate site data and

EnviroMission Limited is a public listed Australian company on the ASX (Australian Securities Exchange - ASX Code: EVM) and on the OTCQX foreign securities platform in the United States (OTCQX Code: EVOMY). EnviroMission is the global developer of the Australian Solar Tower renewable energy power station concept being commercialised in the United States. EnviroMission (USA) Inc, a 100% owned subsidiary of EnviroMission Limited, provides local management and representation for EnviroMission in the U.S. market. Solar Tower power station technology is large-scale installed capacity electricity generation technology, to deliver sustainable clean electricity to the wholesale electricity market. For additional information please visit

Terracon is an employee-owned engineering consulting firm with more than 2,700 employees providing geotechnical, environmental, construction materials and facilities services from more than 130 offices in 39 states nationwide. Terracon currently ranks 38th on Engineering News-Record’s List of Top 500 Design Firms. For additional information about Terracon, please visit


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