- ACF West
- Advanced Drainage Systems
- Badger Daylighting
- Basalite Concrete Products
- Bedrock Natural Stone
- Cedar Grove Composting
- Clean Harbors Environmental Services
- CleanWay Environmental Partners, Inc.
- Clear Creek Systems
- Clear Water Services
- Concrete Canvas US, Inc.
- EA Engineering, Science, and Technology, Inc., PBC
- EnviroMet
- ERSM