Montrose Environmental Group, Inc. is an environmental services company, which engages in the provision of air measurement and environmental laboratory services. The company is headquartered in North Little Rock, Arkansas and currently employs 3,500 full-time employees. The company went IPO on 2020-07-23. Its Assessment, Permitting and Response segment provides scientific advisory and consulting services to support environmental assessments, environmental emergency response and recovery, toxicology consulting and environmental audits and permits for current operations, facility upgrades, new projects, decommissioning and development projects. Its Measurement and Analysis segment provides environmental testing and laboratory services in North America, including source and ambient air testing and monitoring, leak detection, and advanced multimedia laboratory services. Its Remediation and Reuse segment provides clients with engineering, design, and implementation services, primarily treatment technologies that treat contaminated water, remove contaminants from soil or create renewable energy from waste.