Tetra Tech to Acquire Coffey International Limited for A$0.425/Share in Cash

Tetra Tech, Inc.

and Coffey International Limited (ASX: COF) are pleased to announce the execution of a Bid Implementation Agreement (BIA) under which Tetra Tech will make an off-market takeover offer to acquire 100% of the outstanding shares of Coffey Founded in 1959 as Australia's first geotechnical engineering firm, Coffey employs 3,300 staff globally, delivering smart solutions and providing innovation and insight across three core service areas including international development, geoservices, and project management. For the most recent fiscal year ended June 30, 2015, Coffey reported revenue of A$556 million (US$407 million). The acquisition of Coffey expands Tetra Tech's geographic presence