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Rank Company
•name
•address
•website		 Employees
•L.A. County
•total		 Services Offered
(partial list)		 Profile
•headquarters
•offices (L.A./total)
•year founded		 Top Local Executive
•name
•title
•phone
1
 Athens Services
14048 E. Valley Blvd.
City of Industry 91746; AthensServices.com		 2,100
2,500		 provides waste, recycling, and organics collection, processing, and disposal for residential, multifamily, and commercial customers, including roll-off service, temporary bin rentals, self-haul disposal, product destruction, and street sweeping City of Industry
16 / 36
1957		 Gary Clifford
Sr. Executive VP
(888) 336-6100
2
 Waste Management
9081 Tujunga Ave.
Sun Valley 91352; wm.com		 1,5001
25,0001		 solid waste collection and disposal, hazardous waste disposal, recycling, electrical power generation Houston
23 / 1,639
1969		 James C. Fish, Jr.
President & CEO
(818) 767-5867
3
 Ramboll Americas Engineering Solutions, Inc.
350 S. Grand Ave., Suite 2800
Los Angeles 90071; americas.ramboll.com		 122
1,783		 air and water quality, regulatory compliance, site assessment, hazardous waste management, remediation Arlington, VA
1 / 300
1982		 Eric Lu
Regional Director
(213) 943-6300
1 Business Journal estimate.
NA – Not Available N/A – Not ApplicableNote: Information on this list was provided by the companies. Companies are ranked by the number of L.A. County employees. 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 to the Research Department at [email protected]. ©2025 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 Deepanjali Batra