Shareholder lawsuits against Clean Harbors dismissed

Clean Harbors Inc., a provider of environmental and hazardous waste management services throughout North America, announced that lawsuits filed against the company in November 2003 by four shareholders have now been voluntarily dismissed with prejudice by the lead counsel for the plaintiffs without any payment by Clean Harbors to the plaintiffs or their counsel...

BRAINTREE, MA, Dec. 2, 2004 (BUSINESS WIRE) -- Clean Harbors Inc., a provider of environmental and hazardous waste management services throughout North America, announced that lawsuits filed against the company in November 2003 by four shareholders have now been voluntarily dismissed with prejudice by the lead counsel for the plaintiffs without any payment by Clean Harbors to the plaintiffs or their counsel.

The lawsuits, filed in the U.S. District Court of Massachusetts, arose after Clean Harbors' acquisition of the Chemical Services Division of Safety-Kleen and had alleged securities law violations by Clean Harbors and certain present and former officers in reporting the effect of the acquisition on the financial performance of the company. Clean Harbors has consistently maintained that the company and its present and former officers conducted themselves in compliance with relevant securities laws during the period in question.

The cases were never certified as a class action, and the plaintiffs voluntarily dismissed their cases by means of a voluntary stipulation of dismissal without financial consideration and mutual release of all claims.

About Clean Harbors, Inc.
Clean Harbors Inc. (www.cleanharbors.com) is a leading North American provider of environmental and hazardous waste management services. With an infrastructure of 48 waste management facilities, including nine landfills, five incineration locations and seven wastewater treatment centers, the company provides essential services to more than 30,000 customers, including more than 175 Fortune 500 companies, thousands of smaller private entities and numerous federal, state and local governmental agencies. Based in Braintree, Mass., Clean Harbors has more than 100 locations strategically positioned throughout North America in 36 U.S. states, six Canadian provinces, Mexico and Puerto Rico.

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