Aecom Technology Corp. said Wednesday that it has acquired Canadian environmental science consulting firm Gartner Lee Limited.

No financial terms were disclosed but the Los Angeles-based engineering and consulting firm said that by acquiring the Markham, Ontario-based firm it can strengthen its ability to service the growing Canadian environmental and infrastructure markets. Aecom currently employs about 1,600 professionals in Canada.

This is the second Canadian acquisition for Aecom in as many months. In August, Aecom acquired wastewater management firm KMK Consulting Ltd. for an undisclosed sum.

Shares in Aecom were down 5.3 percent to $34.81 in afternoon trading Thursday on the New York Stock Exchange.

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