08:58 AM EDT, 08/12/2026 (MT Newswires) -- Clean Harbors ( CLH ) said Wednesday it agreed to acquire environmental and waste management services provider EnviroServe from an affiliate of One Rock Capital Partners for $470 million in cash.

The deal is expected to close in H2, subject to regulatory approval and other closing conditions, the company said.

Clean Harbors ( CLH ) said it expects about $25 million in cost synergies over the first two years and plans to fund the deal with available cash and additional debt.

EnviroServe, which serves nearly 2,500 customers through 40 locations, is expected to generate about $250 million in annual revenue and $27 million in adjusted earnings before interest, taxes, depreciation, and amortization, Clean Harbors ( CLH ) added.