Stantec Inc. has signed a deal to buy Chicago-based engineering firm Environmental Systems Design Inc. (ESD).
Financial terms of the agreement were not disclosed.
Stantec says ESD will grow its mechanical, electrical and plumbing (MEP) and structural engineering practice by 40 per cent in the U.S.
ESD was founded in 1967 and has 270 employees.
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In addition to Chicago, ESD has offices in New York, San Francisco and Phoenix.
The acquisition is expected to close on June 30.