Aurora Capital Partners has announced it has acquired Curtis Bay Medical Waste Services from Summer Street Capital Partners.

Curtis Bay Medical Waste Services, based in Baltimore, is a provider of medical waste collection, treatment and disposal services. Founded in 1991, the company operates several autoclaves, a hauling network comprised of a company truck fleet and transfer stations, and a medical waste incinerator.

Aurora Capital, based in Los Angeles, is a middle market private equity firm focused on control investments. Founded in 1991, Aurora targets businesses valued between $100 and $500 million in three sectors: industrial and business services, industrial technologies, and software and tech-enabled services.

Summer Street Capital, based in Orchard Park, N.Y., is a private equity fund manager focused on investing in small and middle market companies. Founded in 1999, Summer Street Capital targets businesses valued between $20 million and $150 million in three sectors: niche manufacturing, environmental services and business services.

Terms of the acquisition were not disclosed.