Alliance Technical Group, LLC (Alliance) is a premier environmental services and solutions company dedicated to helping industrial facilities achieve environmental compliance, navigate regulatory changes, and meet sustainability goals. Founded in 2000 in Decatur, Alabama, as a small stack-testing business, Alliance has evolved into one of North America's most comprehensive environmental services platforms. The company specializes in environmental compliance and remediation services, with a strong focus on air quality and industrial emissions control. Its comprehensive service offerings include stack testing, leak detection and repair, continuous emissions monitoring (CEMS), data acquisition systems (DAS), on-site testing and monitoring, laboratory testing and analysis for air, water, soil, and waste, as well as environmental consulting and technology solutions. With more than 2,200 employees across over 60 offices in the United States and Canada, Alliance serves major companies and brands by providing innovative, high-quality technical solutions to address complex environmental challenges and ensure regulatory adherence. The company's growth has been driven by strong organic expansion, strategic mergers and acquisitions, and investments in technology and operational infrastructure. Key acquisitions include EcoTest Energy Services in 2022, which expanded its footprint in energy sector compliance; four environmental laboratories across the U.S. in 2023 to enhance analytical capabilities; and ESC Spectrum to strengthen leadership in CEMS and DAS. Backed by Morgan Stanley Capital Partners (MSCP) since 2021, the company underwent substantial scaling before MSCP's sale of Alliance, positioning it as a differentiated partner for clients facing increasingly stringent environmental standards. Alliance emphasizes a culture of trust, excellence, and employee investment, with recognition as a great place to work, while focusing on innovation to push the boundaries of environmental management and compliance services.