Clean Harbors' Presentation at the Credit Suisse Conference to be Webcast Live on June 1

Date: May 26, 2006

Source: Business Wire

Clean Harbors, Inc. (NASDAQ: CLHB), a leading provider of environmental and hazardous waste management services in North America, announced that senior management will be presenting at the Credit Suisse Environmental and Engineering Services Conference. The conference is being held June 1 in New York City. Clean Harbors' presentation will take place at 10:15 a.m. (EDT) on Thursday, June 1, 2006 and will be webcast live. To access the live or archived webcast, visit the "Investor Relations" portion of Clean Harbors' website at www.cleanharbors.com.

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