    <SEC-DOCUMENT>0000822818-26-000015-index.html : 20260410
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    <ACCEPTANCE-DATETIME>20260410145536
    ACCESSION NUMBER:		0000822818-26-000015
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		6
    FILED AS OF DATE:		20260410
    DATE AS OF CHANGE:		20260410

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CLEAN HARBORS INC
    		CENTRAL INDEX KEY:			0000822818
    		STANDARD INDUSTRIAL CLASSIFICATION:	HAZARDOUS WASTE MANAGEMENT [4955]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				042997780
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-34223
    		FILM NUMBER:		26854452

    	BUSINESS ADDRESS:
    		STREET 1:		42 LONGWATER DRIVE
    		STREET 2:		P.O. BOX 9149
    		CITY:			NORWELL
    		STATE:			MA
    		ZIP:			02061-9149
    		BUSINESS PHONE:		781-792-5000

    	MAIL ADDRESS:
    		STREET 1:		42 LONGWATER DRIVE
    		CITY:			NORWELL
    		STATE:			MA
    		ZIP:			02061-9149
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>e-proxynoticex2025.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: e-proxynoticex2025.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>cleanharborsinc_autoxregxn.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 2 - file: cleanharborsinc_autoxregxn.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>cleanharborsinc_autoxregxna.jpg
    <TEXT>
    Document 3 - file: cleanharborsinc_autoxregxna.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>clhlogoa.jpg
    <TEXT>
    Document 4 - file: clhlogoa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>proxycheckboximagea.jpg
    <TEXT>
    Document 5 - file: proxycheckboximagea.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>proxyuncheckimagea.jpg
    <TEXT>
    Document 6 - file: proxyuncheckimagea.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>