Environmental Remediation
ARGO Tunnel Mill Site
Boulder Valley Water Treatment
Roswell Municipal Landfill


SEMA’s corporate experience includes environmental projects designed to restore, enhance and protect the environment. Our projects have included environmental containment facilities, industrial treatment / remediation facilities, waste disposal facilities, mined land reclamation, water quality facilities, as well as beneficial development of historically impacted properties.

Providing a better and safer world for existing and future generations is our ultimate goal on each of our projects. We feel the construction industry has a part in protecting our environment and quality of life. At SEMA, we offer clean solutions for the environment.