- Beale Air Force Base
- Bechtel National
- Buckley Air Force Base
- Bureau of Reclamation
- City and County of Denver
- City of Thornton
- Denver Public Schools
- Department of Homeland Security
- EnviroFinance Group
- Federal Bureau of Investigations
- F.E. Warren Air Force Base
- Fort Carson Army Base
- Garfield County Colorado
- General Services Administration
- HORNE LLP
- Internal Revenue Service
- NASA Johnson Space Center
- National Park Service
- National Institute of Standards and Technology (NIST)
- National Oceanic and Atmospheric Administration (NOAA)
- PCL Construction
- PFP Holdings
- Sewall Child Development Center
- U.S. Air Force
- U.S. Army
- U.S. Navy
- U.S. Department of Homeland Security
- U.S. Forest Service
- USACE Albuquerque District
- USACE Fort Worth District
- USACE Huntsville District
- USACE Kansas City District
- USACE Louisville District
- USACE Omaha District
- USACE Sacramento District
- USACE Tulsa District
- Zurich National
“Ayuda was very thorough and methodical in completing required tasks, from the work plan-to sampling and analysis to the final surface restoration and exceeded the site manager’s and Corps of Engineer’s expectations with the quality of work, “Ken Kebbell, Chief, HTRW Branch, USACE Tulsa District in reference to the $1.2 million Environmental Restoration project at Site 7A at Pine Bluff Arsenal.