Tetra Tech Acquires American Environmental Group

  Tetra Tech Acquires American Environmental Group

Business Wire

PASADENA, Calif. -- January 3, 2013

Tetra Tech, Inc. (NASDAQ: TTEK) announced today that it has acquired solid
waste management specialist American Environmental Group, Ltd. (AEG) of
Richfield, Ohio. AEG provides environmental, design, construction, and
maintenance services to solid and hazardous waste, environmental, energy,
utility, and other industrial clients. The company has more than 500 employees
and approximately $95 million in annual revenue.

“Together with AEG, we can provide engineering-procurement-construction (EPC)
solutions for industrial clients,” said Dan Batrack, Tetra Tech’s Chairman and
CEO. “These clients include landfill operators, as well as mining and power
clients that face specialty disposal challenges. Service to solid waste and
utility clients, which is less susceptible to economic volatility, has been a
steady and growing part of Tetra Tech’s business.”

AEG is joining Tetra Tech’s Remediation and Construction Management (RCM)
segment. Tetra Tech anticipates that AEG will contribute approximately $50
million of net revenue and, after intangible amortization and integration
costs, approximately 1 to 2 cents to diluted EPS in fiscal year 2013. The
terms of the acquisition were not disclosed.

About AEG (www.aegl.net)

Founded in 2002, American Environmental Group, Ltd. provides specialty
environmental, construction, and maintenance services to solid and hazardous
waste, environmental, utility, mining, and other industrial clients.

About Tetra Tech (www.tetratech.com)

Tetra Tech is a leading provider of consulting, engineering, program
management, construction management, and technical services. The Company
supports government and commercial clients by providing innovative solutions
to complex problems focused on water, environment, energy, infrastructure, and
natural resources. With more than 14,000 employees worldwide, Tetra Tech’s
capabilities span the entire project life cycle.

Any statements made in this release that are not based on historical fact are
forward-looking statements. Any forward-looking statements made in this
release represent management’s best judgment as to what may occur in the
future. However, Tetra Tech’s actual outcome and results are not guaranteed
and are subject to certain risks, uncertainties and assumptions ("Future
Factors"), and may differ materially from what is expressed. For a description
of Future Factors that could cause actual results to differ materially from
such forward-looking statements, see the discussion under the section "Risk
Factors" included in the Company’s Form 10-K and 10-Q filings with the
Securities and Exchange Commission.

Contact:

Tetra Tech, Inc.
Jim Wu, Investor Relations
Talia Starkey, Media & Public Relations
626-470-2844