Pasadena, California. Tetra Tech, Inc. (NASDAQ: TTEK) announced today the acquisition of Maxim Technologies, Inc. (Maxim), a company focused on providing environmental services to the energy and mining markets. Headquartered in Dallas, Texas, Maxim has gross revenue of approximately $35 million per year and employs about 300 people.

Maxim provides engineering and technical consulting services primarily to oil, natural gas, coal, mineral, and pipeline companies. These services include permitting, engineering design, geology, and regulatory consultation.

"The addition of Maxim will strengthen our capabilities in the energy services sector and increase our geographic presence in Texas and other Midwestern states," said Li-San Hwang, CEO of Tetra Tech. "We welcome the employees of Maxim to our family."

About Maxim Technologies, Inc.
Maxim is a multi-disciplined professional consulting organization focusing on engineering and environmental services. Maxim, headquartered in Dallas, Texas, provides cost-effective solutions to a variety of clients throughout the United States. Maxim employs experienced engineers, scientists, chemists and technical specialists in multiple offices throughout the country.

About Tetra Tech, Inc.
Tetra Tech is a leading provider of specialized management consulting and technical services in three principal business areas: resource management, infrastructure and communications. The Company's clients include a diverse base of public and private sector organizations serviced through more than 150 offices located in the United States and internationally.

Certain statements contained in this news release are forward-looking statements that involve risks and uncertainties, such as those related to the Company's acquisition strategy and the fluctuations in the Company's quarterly operating results and stock price, and the other risks detailed from time to time in the Company's SEC reports