IRVINE, Calif.–(BUSINESS WIRE)–Montrose Environmental Group, Inc. (?Montrose?) has acquired CTEH?, an Arkansas-based scientific consulting firm that specializes in emergency preparedness, response and recovery. With CTEH, Montrose is now positioned as a global leader in the future of environmental solutions. Terms of the transaction were not disclosed. ?For nearly 25 years, CTEH has built a reputation for providing the reliable science, timely information and advice needed to help safeguard w