Seal Industries Acquires Environmental Analytics, Inc.

G.L. Ohrstrom & Co. Creates Seal Industries Platform

September 1, 2009

Industrial Services

G.L. Ohrstrom & Co., a New York-based private equity firm, has created and capitalized Seal Industries, Inc., a Houston-based platform to consolidate the industrial and energy services markets. Seal will provide environmental compliance, HSE and repair services to refineries, petrochemical and power plant customers and will pursue add-on acquisitions; the company completed its first acquisition in March 2009.

GZA GeoEnvironmental Acquires Equity Environmental Engineering LLC

February 6, 2023

Environmental Services

GZA GeoEnvironmental has acquired Equity Environmental Engineering LLC, a Mount Olive, New Jersey–based provider of environmental consulting and planning services. The acquisition strengthens GZA’s environmental consulting and planning capabilities across the New York Metro and Mid-Atlantic markets and brings Equity staff into GZA’s Manhattan and Fairfield offices.

GFL Environmental Services Acquires OSI Environmental

June 3, 2025

Environmental Services

GFL Environmental Services, the newly spun-off environmental services division controlled by Apollo Global Management and BC Partners, has acquired OSI Environmental, a Minnesota-based hazardous and non-hazardous waste services provider. The add-on expands GFL Environmental Services' footprint across the Midwest and adds capabilities such as used-oil recycling, roll-off services and emergency spill response to its platform.

apexanalytix Acquires ESG Enterprise

March 7, 2023

Data & Analytics

apexanalytix has acquired ESG Enterprise, a provider of AI-powered ESG management data, SaaS and supply-chain analytics; financial terms were not disclosed. The acquisition expands apex's supply-chain risk and sustainability capabilities and follows apex's majority investment from KKR in 2022.

Alliance Technical Group Acquires Four Environmental Laboratories Nationwide

November 17, 2023

Environmental Services

Alliance Technical Group, a Morgan Stanley Capital Partners–backed environmental testing and services platform, has acquired four independent environmental laboratories — Summit Environmental Technologies (Cuyahoga Falls, OH), Fremont Analytical (Seattle, WA), Orange Coast Analytical (Los Angeles, CA / Phoenix, AZ) and CHESTER LabNet (Portland, OR) — to build a nationwide laboratory network. The add-on deals expand Alliance's capabilities beyond air testing into water, hazardous waste, soil and PFAS/XRF analyses and broaden its geographic coverage across the United States.

SePRO Acquires Green Eyes Environmental Monitoring Solutions

April 22, 2025

Environmental Services

SePRO Corporation, a portfolio company of Stanley Capital Partners with backing from Goldman Sachs Alternatives, has acquired Green Eyes Environmental Monitoring Solutions. The deal integrates Green Eyes' NuLAB automated nutrient-monitoring technology into SePRO's environmental services platform to expand real-time water quality diagnostics; financial terms were not disclosed and Green Eyes founder Vincent Kelly will remain with the business.