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CleanHarbors Press Release Clean Harbors Announces First - Quarter 2021 Financial Results • Reports Q1 Revenues of $ 808.1 Million • Achieves Q1 Net Income of $ 21.7 Million , or EPS of $ 0.39 , with Adjusted EPS of $ 0.42 • Increases Q1 Adjusted EBITDA to $ 129.5 Million Improves Adjusted EBITDA Margin by 130 Basis Points to 16.0 % Creates Safety - Kleen Sustainability Solutions Segment Raises 2021 Adjusted EBITDA and Adjusted Free Cash Flow Guidance NORWELL , Mass . - May 5 , 2021 – Clean Harbors , Inc. ( “ Clean Harbors ” ) ( NYSE : CLH ) , the leading provider of environmental and industrial services throughout North America , today announced financial results for the first quarter ended March 31 , 2021 . " We opened 2021 with a better - than - expected first - quarter performance , ” said Alan S. McKim , Chairman , President and Chief Executive Officer . “ We delivered Adjusted EBITDA that exceeded our guidance driven by a combination of greater volumes of high- value waste streams in our disposal network and a rising pricing environment for base oil . These factors , combined with ongoing cost controls and productivity initiatives , contributed to a 130 basis - point improvement in our Adjusted EBITDA margin . Overall , we experienced favorable trends across many of our key industry verticals , supported by the improving macroeconomic environment . ” First - Quarter 2021 Results Revenues decreased 6 % to $ 808.1 million from $ 858.6 million in the same period of 2020. Income from operations grew 12 % to $ 50.9 million from $ 45.5 million . Net income was $ 21.7 million , or $ 0.39 per diluted share . This compares with net income of $ 11.6 million , or $ 0.21 per diluted share , for the same period in 2020. Adjusted for certain items in both periods , adjusted net income was $ 23.4 million , or $ 0.42 per diluted share , for the first quarter of 2021 , compared with adjusted net income of $ 15.6 million , or $ 0.28 per diluted share , in the same period of 2020. ( See reconciliation table below ) Adjusted EBITDA ( see description below ) increased 3 % to $ 129.5 million from $ 125.9 million in the same period of 2020 . Clean Harbors • 42 Longwater Drive • PO Box 9149 • Norwell , Massachusetts 02061-9149 • 800.282.0058 • www.cleanharbors.com