    <SEC-DOCUMENT>0000822818-20-000004-index.html : 20200424
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    <ACCEPTANCE-DATETIME>20200424162906
    ACCESSION NUMBER:		0000822818-20-000004
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20191231
    FILED AS OF DATE:		20200424
    DATE AS OF CHANGE:		20200424
    EFFECTIVENESS DATE:		20200424

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CLEAN HARBORS INC
    		CENTRAL INDEX KEY:			0000822818
    		STANDARD INDUSTRIAL CLASSIFICATION:	HAZARDOUS WASTE MANAGEMENT [4955]
    		IRS NUMBER:				042997780
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-34223
    		FILM NUMBER:		20815435

    	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>
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    <SEQUENCE>1
    <FILENAME>clhproxy2020.htm
    <DESCRIPTION>DEF 14A
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    Document 1 - file: clhproxy2020.htm

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    <TEXT>
    Document 2 - file: clhlogoa01.jpg

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    <SEQUENCE>3
    <FILENAME>clhsignature2019a01.jpg
    <TEXT>
    Document 3 - file: clhsignature2019a01.jpg

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    <SEQUENCE>4
    <FILENAME>davismalmsignature2019a01.jpg
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    Document 4 - file: davismalmsignature2019a01.jpg

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    <SEQUENCE>5
    <FILENAME>committeecompositionfinal.jpg
    <TEXT>
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    Document 7 - file: a132721ceocomp4cpie.jpg

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    Document 8 - file: a132721neocomp4cpie.jpg

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    <FILENAME>davismalmsignature201902a01.jpg
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    <FILENAME>proxycardfinala01.jpg
    <TEXT>
    Document 10 - file: proxycardfinala01.jpg

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    <SEQUENCE>11
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    <TEXT>
    Document 11 - file: proxycardfinal2a01.jpg

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