# CLEAN HARBORS INC (CLH) — merger/definitive [pending]
Source: SEC API (secapi.ai) · situation sit_6de8a3cd4c5065139742 · retrieved 2026-08-11T15:52:20.106Z

## Overview
Clean Harbors, Inc. is North America's leading provider of environmental and industrial services, including hazardous waste management, emergency spill response, industrial cleaning and maintenance, recycling services, and parts washing and re-refining of used oil through its Safety-Kleen subsidiary.

Clean Harbors, Inc. entered into a definitive agreement to acquire ES&H, a leading regional provider of environmental and emergency response services in the Gulf region, for $305 million in cash. The acquisition is expected to close in the second half of 2026, subject to regulatory approval and other customary closing conditions. ES&H, headquartered in Louisiana with 13 service branches, has annual base revenues of approximately $90 million and generates annual Adjusted EBITDA of approximately $30 million. Clean Harbors expects the acquisition to generate cost synergies of approximately $5 million after the first full year of operations, equating to a post-synergy acquisition multiple of 8.7 times.

## Terms
- Counterparty: ES&H · Deal value: $305.0M · Consideration: cash

## Key dates
- Announced 2026-07-29

## Timeline
- 2026-07-29 · 8-K (0000822818-26-000031): 8-K - CLEAN HARBORS INC — *Clean Harbors, Inc. is North America's leading provider of environmental and industrial services, including hazardous waste management, emergency spill response, industrial cleaning and maintenance, recycling services, and parts washing and re-refining of used oil through its Safety-Kleen subsidiary.* Clean Harbors, Inc. entered into a definitive agreement to acquire ES&H, a leading regional provider of environmental and emergency response services in the Gulf region, for $305 million in cash. The acquisition is expected to close in the second half of 2026, subject to regulatory approval and other customary closing conditions. ES&H, headquartered in Louisiana with 13 service branches, has annual base revenues of approximately $90 million and generates annual Adjusted EBITDA of approximately $30 million. Clean Harbors expects the acquisition to generate cost synergies of approximately $5 million after the first full year of operations, equating to a post-synergy acquisition multiple of 8.7 times.
  https://www.sec.gov/Archives/edgar/data/822818/0000822818-26-000031.txt

## Citations
- 0000822818-26-000031 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000082281826000031