Gryphon Investors' portfolio company HEPACO LLC acquired Cleveland-based Environmental Management Specialists Inc. for an undisclosed amount.

Environmental Management Specialists provides emergency-response, remediation and environmental services in 11 locations in Indiana, Kentucky, Ohio and Pennsylvania, while HEPACO provides environmental and emergency response services through 31 offices in the eastern U.S. Together, the combined companies will have a footprint spanning the Southeast, the Midwest, the mid-Atlantic and the Northeast, according to a release.

EMS founder and CEO Jon Ransom will become a HEPACO executive and maintain a significant investment in the combined company.

Gryphon Investors, a middle-market private equity firm, acquired HEPACO in August 2016.

EdgePoint Capital Partners served as Environmental Management Services' financial adviser, while Tucker Ellis LLP served as its legal adviser. Moore & Van Allen PLLC provided legal advice to HEPACO.