Alliance Technical Group Acquires Emission Monitoring Service, Inc. (EMSI)

Alliance Technical Group Acquires ESC Spectrum

July 7, 2025

Environmental Services

Alliance Technical Group, a Morgan Stanley Capital Partners–backed environmental services platform, has acquired ESC Spectrum, a provider of Continuous Emissions Monitoring Systems (CEMS) and Data Acquisition Systems (DAS). The deal adds ESC Spectrum's software, hardware, and field-service capabilities to Alliance's nationwide compliance, stack testing, and laboratory services, accelerating Alliance's CEMS/DAS offering and scale.

Morgan Stanley Capital Partners Acquires Alliance Technical Group from Align Capital Partners

July 20, 2021

Environmental Services

Morgan Stanley Capital Partners (MSCP) has acquired a controlling interest in Alliance Technical Group, a Decatur, Alabama–based provider of air emissions testing, monitoring and analytical services, from Align Capital Partners. MSCP will partner with Alliance's management led by CEO Chris LeMay to continue geographic expansion and M&A-driven growth while the management team and employees retain a meaningful ownership stake.

Alliance Technical Group Acquires Environmental 360

June 20, 2025

Environmental Services

Alliance Technical Group acquired Environmental 360, LLC to expand its environmental consulting, monitoring, and compliance capabilities. The deal strengthens Alliance's onsite field services and emissions/compliance monitoring offerings for industrial clients across the United States.

Alliance Technical Group (ACP-backed) Acquires Air Quality Services (AQS)

April 1, 2021

Environmental Services

Alliance Technical Group, the environmental testing and compliance platform backed by Align Capital Partners, has acquired Air Quality Services (AQS), a 1998-founded provider of stack testing, ambient air monitoring, and CEMS services based in Evansville, Indiana. The add-on expands Alliance’s service capabilities into continuous emissions monitoring and strengthens its Midwest footprint.

Titan Cloud Software Acquires Environmental Monitoring Solutions (EMS)

February 22, 2021

Cloud & SaaS

Titan Cloud Software, a Nashville-area cloud software provider backed by M33 Growth, has acquired Australian wetstock management and forecourt automation specialist Environmental Monitoring Solutions (EMS). EMS will retain its brand and leadership (Russell Dupuy remains Managing Director and becomes SVP of Global Wetstock at Titan Cloud) as the deal expands Titan Cloud's wetstock management product portfolio and accelerates the company's geographic growth in Asia Pacific and Europe; financial terms were not disclosed.

Alliance Technical Group Acquires Slipstream Environmental Services

May 13, 2025

Environmental Services

Alliance Technical Group has acquired Slipstream Environmental Services, a Sheridan, Wyoming-based specialist in combustion source emissions testing for the oil & gas sector. Slipstream's ~45 employees and fleet of 23 mobile testing labs will integrate into Alliance's national network to expand combustion source testing capabilities and regulatory compliance services.