Dyess-Peterson Testing Laboratory, Inc. is a multi-discipline engineering and technology firm specializing in construction materials testing, environmental services, geotechnical services and engineering services.

Dyess-Peterson Testing Laboratory, Inc. is a small, woman owned business staffed with highly trained professionals who are motivated to meet all your testing and engineering needs. Dyess-Peterson Testing Lab is certified by the State of Texas as a Historically Underutilized Business (HUB) and by the Texas Department of Transportation as a Disadvantaged Business Enterprise (DBE).