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TerraTherm, Inc. and Gas Technologies Institute Agreement Offers Speedy, Permanent Cleanup of Manufactured Gas Sites (MGP), Eliminates Coal Tar Migration
February 9, 2010

FITCHBURG, MA, and DES PLAINES, IL--TerraTherm, Inc., a leading provider of in situ thermal remediation services and GTI, the leading research, development and training organization serving the natural gas industry, today announced that they have reached agreement to commercialize GTI's patented In Situ Thermochemical Solidification (ISTS) technology exclusively through TerraTherm. The combination of TerraTherm's proprietary remediation technologies and GTI's ISTS has proven successful and cost-effective in MGP gasholder cleanup, demonstrating permanent prevention of coal tar migration without excavation. This synergy allows the two companies to provide a uniquely effective and attractive remediation package to owners of the estimated 7000 MGP sites, worldwide.

ISTS, specifically designed for MGP sites, leverages TerraTherm's Thermal Conduction Heating
technology to remove organic components of the contaminants, then permanently solidify remaining
coal tar in place, forming an immobile, stable substance similar to asphalt pavement. "Use of ISTS
stops liquid coal tar from migrating beyond property boundaries or contaminating public water
supplies. This is an issue that is critically important to the owners of the sites and a major public
health issue confronting communities. In developing ISTS, GTI has engineered a simple and effective
way to eliminate the risks of contaminant migration, reduce liability and return many of these
potentially valuable urban properties to the positive side of the balance sheet. We are delighted to
partner with GTI to bring this technology and service package to market," says Dr. Ralph Baker, CEO
of TerraTherm, Inc.

Baker's observations about the value of this remediation market are reinforced by the significant
scope of the MGP pollution problem, and the urban location of the former manufactured gas plants. An
estimated 3000 MGP plants dot the U.S. landscape. Built long ago on the outskirts of towns and cities,
these locations are now in today's urban core. In situ remediation is a far more attractive option than
excavation because these plants often lie in close proximity to, and sometimes underlie,
infrastructure, commercial buildings and residential areas.

"We're very excited about this agreement because it represents the kind of synergy between two
organizations that makes excellent business sense," observes Quinton Ford, Director,
Commercialization for the Gas Technology Institute. "GTI's years of R&D experience and our focus
give us a unique understanding of the needs of the utility industry and of MGP remediation.
TerraTherm brings extensive field experience and know-how in cleaning up hazardous wastes using in
situ techniques. They also have the equipment and proven field teams to deliver the ISTS technology
in a cost-effective manner. This combination allows us to deliver the consistent, predictable results
that the utility industry demands," adds Ford.

About TerraTherm

TerraTherm is a worldwide leader in the development and implementation of in situ thermal
remediation of hazardous waste. We advise on, design, build and operate thermal remediation
projects from concept to closure. We offer the broadest array of thermal remediation technologies in
the industry, allowing us to tailor project designs to specific site conditions, using the optimal
combination of methods, without bias towards any single technology or approach.

TerraTherm partners with leading engineering firms, government agencies, corporations and property
owners in flexible, cooperative relationships to achieve cleanup goals. Our expertise, broad set of
proven technologies and seasoned staff combine to provide the most effective cleanup available for a
broad array of contaminants within all soils and site conditions.

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