Montrose Environmental Group, Inc. is an environmental solutions company focused on supporting commercial and government organizations. 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.