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Clean Harbors' Cincinnati Facility Earns OSHA VPP Star Certification

Third Clean Harbors Location to be Recognized for Superior Health & Safety Awareness

NORWELL, Mass., Oct. 31, 2007 (PRIME NEWSWIRE) -- Clean Harbors Environmental Services, Inc., the leading provider of environmental and hazardous waste management services throughout North America, today announced that its Cincinnati, Ohio (Spring Grove Resource Recovery) facility has received a "Star" designation from the Occupational Safety and Health Administration (OSHA) Voluntary Protection Program (VPP).

The Cincinnati Spring Grove location is Clean Harbors' third Treatment, Storage, and Disposal Facility (TSDF) to receive this prestigious recognition from OSHA. Clean Harbors' Lone Mountain facility in Oklahoma was the first TSDF in the country to be recognized with this award in 2005, followed by the Clean Harbors Reidsville, North Carolina TSDF in 2006. Clean Harbors' TSDFs are the nation's only TSDFs to receive this certification.

Spring Grove's total recordable incidence rate (TRIR) has steadily declined each year since 2003 and the facility's rate was zero in 2006. As defined by the Occupational Safety and Health Administration, TRIR measures the total number of recordable injuries and illness cases per 100 full-time employees that a site has experienced in a given time frame.

"It is a privilege to work with a team of employees that is committed to elevating workplace safety and health programs, which ultimately works for everyone's benefit," said Andrew Hudson, General Manager for Clean Harbors Spring Grove Resource Recovery. "VPP status can only be achieved through a team effort that requires everyone in the plant to contribute. Each co-worker has played an integral role in this three-year endeavor: attending safety meetings, providing feedback to management, improving their individual safety performance, and looking out for their co-workers. Our facility also received unparalleled support from our corporate staff, emphasizing Clean Harbors' desire for continuous safety improvement and culture of protecting its employees' health and safety."

The VPP Star Program is a comprehensive health and safety process that requires employee involvement, management support, and cooperation with OSHA. Star facilities demonstrate a strong safety culture from both management and employees who ensure a safe and healthful workplace environment. Additionally, facilities that are awarded the certification have occupational injury and illness incidence rates below the state and national averages for companies within the same industry classification. "Congratulations to each and every employee at the Clean Harbors Spring Grove Resource Recovery facility for their participation, dedication, and achievement in being recognized as an OSHA Star. It was truly a collaborative effort," Hudson concluded.

The Spring Grove Resource Recovery location is a commercial hazardous waste management facility primarily engaged in receiving hazardous waste generated off-site for on-site treatment or consolidation and temporary storage while in transit to a final treatment, recycling, or disposal site.

About Clean Harbors Environmental Services, Inc.

Clean Harbors Environmental Services, Inc. is North America's leading provider of environmental and hazardous waste management services. With an unmatched infrastructure of 49 waste management facilities, including nine landfills, six incineration locations and six wastewater treatment centers, the Company provides essential services to over 45,000 customers, including more than 325 Fortune 500 companies, thousands of smaller private entities and numerous federal, state and local governmental agencies. Headquartered in Norwell, Massachusetts, Clean Harbors has more than 100 locations strategically positioned throughout North America in 36 U.S. states, six Canadian provinces, Mexico and Puerto Rico. For more information, visit www.cleanharbors.com.

CONTACT:  Clean Harbors Environmental Services, Inc.
          Phillip G. Retallick, Senior Vice President - Compliance
           and Regulatory Affairs
          803.691.3427
          retallick.phil@cleanharbors.com