GARDNER, MA--(Marketwired - July 23, 2015) - TerraTherm, a worldwide leader in the development and implementation of In Situ Thermal Remediation, has been named to the 2015 Zweig Group Hot Firm List. Zweig Group, the nation's leading consulting, publishing, and training firm for the architecture, engineering, and environmental consulting industries, issues the Hot Firm List each year. The Hot Firm List recognizes the fastest-growing architecture, engineering, planning, and environmental consulting firms in the United States and Canada.

This is the third year that TerraTherm has been recognized for growth and leadership by this leading industry publication. This year, the company was ranked #14 out of 100 firms. It was a competitive year, but TerraTherm has climbed 6 places from last year's ranking due to rapid growth over the years 2011 to 2014.

In addition to earning this coveted spot on the Hot Firm List, TerraTherm has also been awarded one of Zweig Group's 2015 Best Firms to Work For in the Environmental category. This is the second year in a row that TerraTherm has been honored with this award.

"Earning a place on both the Hot Firm and Best Firms to Work For lists for the second year in a row is a major accomplishment. Both of these awards and our significant growth are a reflection of our employees' dedication and commitment to client service with a particular focus on delivering the appropriate thermal solution," stated TerraTherm's CEO and President, John Bierschenk.

TerraTherm and the other winning firms will be honored with a black-tie awards banquet and ceremony at the 2015 Zweig Group Hot Firm and A/E Industry Awards Conference, the industry's largest and most comprehensive business conference for leaders and aspiring leaders of AEC firms in the U.S.

The awards conference will be held at The Fairmont Copley Plaza in Boston, MA on September 3-4, 2015.

About TerraTherm
TerraTherm, Inc. is a worldwide leader in the development and implementation of in situ and on‐site thermal remediation of toxic contaminants. TerraTherm designs, builds and operates projects from concept to closure, using Thermal Conduction Heating (TCH), Steam Enhanced Extraction (SEE), Electrical Resistance Heating (ERH), and combinations of the technologies above. With offices in Massachusetts and California, and sub licensees such as Krüger A/S (eight European countries), they offer services worldwide. For more information, visit

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Nathan Bierschenk