- Kiewit Corp.
- Fluor Corp.
- Flatiron Construction Corp.
- Department of Water Resources
- PCL Construction Enterprises, Inc.
- DPR Construction
- Swinerton, Inc.
- Webcor Builders
- ECC
- Teichert Construction
- Solano Beach
- Alaska Air National Guard
- Sukut
- Chromolloy Corporation
- Clark Group
- Balfour Beatty US
- CB&I
- CH2M Hill
- Lend Lease
- California Department of Transportation
- City of Loyalton
- Mountain States Steel
- RM Harris
- Diversified Concrete Cutting, Inc.
- Security Paving Company, Inc.
- El Camino Community College District
- Federal Mogul Asbestos Settlement Trust
- Granite Construction
