Invenvo

Tetra Tech, Inc. announced today that it has been awarded three wind energy projects totaling approximately $150 million by PacifiCorp, one of the leading utilities in the western United States. Work on the three projects will begin immediately and is expected to be complete in December 2008. Tetra Tech will provide engineering, procurement, and construction (EPC) services for the Seven Mile Hill, Glenrock and Rolling Hills wind farm projects in Wyoming.

Each of the three wind projects will include 66 General Electric turbines and will be capable of generating 99 megawatts of power.

The Seven Mile Hill wind project is located in Carbon County, Wyoming, between the towns of Hanna and Medicine Bow. The Glenrock and Rolling Hills projects are located in Converse County, Wyoming, on a site that includes the reclaimed Dave Johnston Coal Mine, where surface mining operations took place for more than 40 years. Final reclamation of the mine was completed in November 2005, returning the land to its pre-mining appearance.

“Many clients are seeking full-service solutions for their wind power development projects,” said Dan Batrack, Tetra Tech’s CEO. “Tetra Tech has been involved in 70 wind projects in 35 states and is continuing to expand its capability and experience in this growing market.”