Either CH2M or Fluor have most of the environmental remediation projects nationwide, and this could be indicative of broader consolidation in the industry.
https://www.ch2m.com/newsroom/news/jacobs-acquire-ch2m-create-premier-15-billion-global-solutions-provider
https://www.ch2m.com/newsroom/news/jacobs-acquire-ch2m-create-premier-15-billion-global-solutions-provider