<SEC-DOCUMENT>0000822818-21-000007-index.html : 20210413
<SEC-HEADER>0000822818-21-000007.hdr.sgml : 20210413
<ACCEPTANCE-DATETIME>20210413165730
ACCESSION NUMBER:		0000822818-21-000007
CONFORMED SUBMISSION TYPE:	PRE 14A
PUBLIC DOCUMENT COUNT:		12
CONFORMED PERIOD OF REPORT:	20210602
FILED AS OF DATE:		20210413
DATE AS OF CHANGE:		20210413

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:		PRE 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34223
		FILM NUMBER:		21823557

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

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>boardpiecharts31.jpg
<TEXT>
Document 2 - file: boardpiecharts31.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>ceocompmix1.jpg
<TEXT>
Document 3 - file: ceocompmix1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>clhlogoa011.jpg
<TEXT>
Document 4 - file: clhlogoa011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>clhsignature2019a011.jpg
<TEXT>
Document 5 - file: clhsignature2019a011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>committeecompositionfinal1.jpg
<TEXT>
Document 6 - file: committeecompositionfinal1.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>compensationpractices1.jpg
<TEXT>
Document 7 - file: compensationpractices1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>davismalmsignature201902a0.jpg
<TEXT>
Document 8 - file: davismalmsignature201902a0.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>davismalmsignature2019a011.jpg
<TEXT>
Document 9 - file: davismalmsignature2019a011.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>otherneocompmix1.jpg
<TEXT>
Document 10 - file: otherneocompmix1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>proxycard-11.jpg
<TEXT>
Document 11 - file: proxycard-11.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>proxycard-21.jpg
<TEXT>
Document 12 - file: proxycard-21.jpg

</DOCUMENT>
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