Clean Harbors to Announce First-Quarter 2019 Financial Results on May 1

NORWELL, Mass.–(BUSINESS WIRE)–Clean
Harbors, Inc.
(NYSE: CLH), the leading provider of environmental,
energy and industrial services throughout North America, will host its
first-quarter 2019 conference call on Wednesday, May 1, 2019 at 9:00
a.m. ET.

On the call, Chairman, President and Chief Executive Officer Alan S.
McKim, Executive Vice President and Chief Financial Officer Michael L.
Battles, and Senior Vice President of Investor Relations Jim Buckley
will discuss Clean Harbors’ financial results, business outlook and
growth strategy.

Those who wish to listen to the conference call webcast should visit the
Investor Relations section of the Company’s website at www.cleanharbors.com.
The live call also can be accessed by dialing 877.709.8155 or
201.689.8881 prior to the start of the call. If you are unable to listen
to the live call, the webcast will be archived on the Company’s website.

About Clean Harbors

Clean Harbors (NYSE: CLH) is North America’s leading provider of
environmental, energy and industrial services. The Company serves a
diverse customer base, including a majority of Fortune 500 companies.
Its customer base spans a number of industries, including chemical,
energy and manufacturing, as well as numerous government agencies. These
customers rely on Clean Harbors to deliver a broad range of services
such as end-to-end hazardous waste management, emergency spill response,
industrial cleaning and maintenance, and recycling services. Through its
Safety-Kleen subsidiary, Clean Harbors also is North America’s largest
re-refiner and recycler of used oil and a leading provider of parts
washers and environmental services to commercial, industrial and
automotive customers. Founded in 1980 and based in Massachusetts, Clean
Harbors operates throughout the United States, Canada, Mexico and Puerto
Rico. For more information, visit www.cleanharbors.com.

Contacts

Michael L. Battles
EVP and Chief Financial Officer
Clean
Harbors, Inc.
781.792.5100
InvestorRelations@cleanharbors.com

Jim Buckley
SVP Investor Relations
Clean Harbors, Inc.
781.792.5100
Buckley.James@cleanharbors.com