    <SEC-DOCUMENT>0001193125-23-082148-index.html : 20230328
    <SEC-HEADER>0001193125-23-082148.hdr.sgml : 20230328
    <ACCEPTANCE-DATETIME>20230328160654
    ACCESSION NUMBER:		0001193125-23-082148
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20221231
    FILED AS OF DATE:		20230328
    DATE AS OF CHANGE:		20230328
    EFFECTIVENESS DATE:		20230328

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Montrose Environmental Group, Inc.
    		CENTRAL INDEX KEY:			0001643615
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
    		IRS NUMBER:				464195044
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39394
    		FILM NUMBER:		23769565

    	BUSINESS ADDRESS:
    		STREET 1:		1 PARK PLAZA, SUITE 1000
    		CITY:			IRVINE
    		STATE:			CA
    		ZIP:			92614
    		BUSINESS PHONE:		(949) 988-3500

    	MAIL ADDRESS:
    		STREET 1:		1 PARK PLAZA, SUITE 1000
    		CITY:			IRVINE
    		STATE:			CA
    		ZIP:			92614
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>d415367dars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: d415367dars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>