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Rank Company
•name
•address
•website		 Employees
•L.A. County (environmental services)
•company total		 Revenue (in millions) Environmental Services Offered
(partial list)		 Profile
•headquarters
•offices (L.A./total)
•year founded		 Top Local Executive
•name
•title
•phone
L.A.
•2022
•2021		 Total
•2022
•2021
1
 Tetra Tech Inc.
3475 E. Foothill Blvd.
Pasadena 91107; tetratech.com		 5521
NA		 NA $3,504
$3,214		 design, consulting, studies, remediation, renewable energy, sustainable infrastructure, solid waste, coastal engineering, water treatment/supply Pasadena
5 / 450
1966		 Dan Batrack
CEO, Chair
(626) 351-4664
2
 Stantec
801 South Figueroa Street Suite 300
Los Angeles 90017; stantec.com		 2351
26,000		 80
63.4		 3,884
3,527		 site assessment and remediation, permitting and compliance, regulatory liaison, monitoring and management Edmonton, Alberta, Canada
4 / 400
1954		 Cara Corsetti
Senior Principal
(213) 955-9775
3
 SCS Engineers
3900 Kilroy Airport Way, Suite 100
Long Beach 90806; scsengineers.com		 186
1,100		 26
24		 439
349		 solid and hazardous waste management; landfill gas; site remediation; renewable energy; regulatory compliance for air, water, and soil; biogas; anaerobic digestion Long Beach
5 / 72
1970		 Michelle Leonard
Senior Vice President, Project Director
(800) 767-4727
1 Business Journal estimate.
NA – Not Available N/A – Not Applicable Note: Information on this list was provided by the companies. Companies are ranked by the number of L.A. County employees involved in environmental engineering/consulting services. To the best of our knowledge, this information is accurate as of press time. While every effort is made to ensure the accuracy and thoroughness of the list, omissions and typographical errors sometimes occur. Please send corrections or additions on company letterhead to the Research Department, Los Angeles Business Journal, 11150 Santa Monica Blvd., Suite 350, Los Angeles 90025. ©2023 Los Angeles Business Journal. This list may not be reprinted in whole or in part without prior written permission from the editor. Reprints are available from Wright’s Media (877) 652-5295.
Researched by Andrew Crowley