Published On: July 18th, 2019

IRVINE, CA (July 18, 2019) – Montrose Environmental Group, Inc. (“Montrose”), a high-growth environmental services company, and Air, Water and Soil Laboratories, Inc. (“AWS”), a leading provider of air, water, and soil testing in the mid-Atlantic region, today announced that they have entered into a definitive agreement under which Montrose has acquired AWS. Terms of the transaction were not disclosed.

AWS is a full-service environmental laboratory in Richmond, VA that provides wastewater, groundwater, drinking water, soil, solids and air (indoor air quality, vapor intrusion, landfill gas and bio-gas) testing services.

Strategically this acquisition allows Montrose to expand its own fully accredited air, water, and soil environmental lab services to the East Coast through its wholly-owned subsidiary Enthalpy Analytical, LLC (“Enthalpy”).

“Since opening in 1994, AWS has provided stellar service and high quality, defensible data for compliance with federal, state, and local environmental regulations,” said Bryan Tyler, Senior Vice President at Enthalpy. Tyler will be overseeing the acquisition integration and be responsible for ongoing operations.

“Not only will this allow us to support our growing presence in the remediation space across the East Coast,” continued Tyler, “It will also help us achieve faster turnaround times and provide complementary services to East Coast clients.”

Carmela Liscio Tombes, AWS founder, echoed Tyler’s enthusiasm, stating “I’m happy Montrose found us. We’ve been approached by companies before, but this was different. Montrose is a company with a bigger picture and a true vision of what environmental services can be.”

Tombes added, “They are driven by customer service and good communication — the same things that propelled AWS’s growth all these years.”

About AWS Labs, Inc.

Since 1994 AWS Labs Inc. has served the mid-Atlantic region with reliable data analysis of wastewater, groundwater, drinking water and solids. Recognized for both quality of the work, quick turnaround, and superior customer service. AWS provides state-of-the-art instrumentation with built-in redundancy to ensure timely and reliable results. AWS is regionally recognized as a full-service environmental laboratory. Headquartered in Richmond, VA, AWS maintains primary NELAC accreditation in Virginia in addition to secondary accreditations in Maryland, North Carolina, West Virginia, Washington DC, Georgia and New York. For more information, visit

About Montrose Environmental Group, Inc.

Montrose Environmental Group, Inc. (“Montrose”) is a high-growth environmental services company with more than 50 locations and 1,200 employees in North America. As one of the largest companies focused on environmental solutions, they support government and commercial organizations with a diverse range of services. Their expertise covers everything from comprehensive air measurement and laboratory services to regulatory compliance, permitting, engineering, and remediation. Montrose understands the unique nature of each client’s situation and employs their broad range of services and expertise to offer equally specialized services — everything from turn-key anaerobic digesters to landfill gas-to-energy development, from tribal gaming environmental studies to water rights issues and more. Working with Montrose, clients gain the personalized, collaborative attention inherent with a local presence along with the peace of mind that grows out of national scale and a respected track record. For more information, visit