One Rock Capital Partners, LLC (together with its affiliates, "One Rock"), a value-oriented, operationally focused private equity firm, today announced that it has completed the previously announced sale of EnviroServe Inc. and its related affiliates (collectively, "EnviroServe" or the "Company") to Clean Harbors, Inc. ("Clean Harbors") (NYSE:CLH) for $470 million.

EnviroServe is a provider of environmental and waste management services, with a service offering spanning remediation, rail services, industrial cleaning and emergency response, as well as hazardous and non-hazardous waste transportation and processing. One Rock acquired EnviroServe through a carve-out from Savage Companies and, during its ownership, expanded the Company’s service capabilities through organic growth, new greenfield locations and add-on acquisitions.

"We are pleased to complete this transaction and to see EnviroServe reach this milestone," said R. Scott Spielvogel, Managing Partner at One Rock. "Working closely with the management team, we helped EnviroServe expand its service capabilities and build a highly trained, service-oriented team during our ownership. We are confident the Company is well positioned for continued success as part of Clean Harbors, and we look forward to watching it grow."

"Today marks an exciting new chapter for Clean Harbors and EnviroServe," said Mike Battles, Co-CEO of Clean Harbors. "Over the past several years, EnviroServe has expanded its capabilities and established a strong platform for growth. We look forward to building upon that success as we integrate the business and leverage our combined strengths to enhance the solutions we provide to customers across North America."

ABOUT ONE ROCK CAPITAL PARTNERS, LLC

One Rock makes controlling investments in companies with potential for growth and operational improvement using a rigorous approach that utilizes highly experienced Operating Partners to identify, acquire and enhance businesses in select industries. The involvement of these Operating Partners affords One Rock the ability to conduct due diligence and consummate acquisitions and investments in all types of situations, regardless of complexity. One Rock works collaboratively with company management and its Operating Partners to develop a comprehensive business plan focused on growing the enterprise and its profitability to enhance long-term value. For more information, visit www.onerock.com.

ABOUT ENVIROSERVE

EnviroServe helps customers manage their most complex waste streams safely and in full regulatory compliance. Serving approximately 2,400 customers across a broad range of end markets, the Company has built its reputation on a disciplined safety culture, deep and long-tenured customer relationships and a well-invested operating footprint spanning the United States. EnviroServe combines the responsiveness of a regional operator with the capabilities and reach of a national platform, supporting customers as they navigate increasingly complex environmental and regulatory demands. For more information, visit www.enviroserve.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20261005120489/en/

Media Contacts

Profile Advisors

Pro-onerock@profileadvisors.com