Note: Dade Moeller joined NV5 in May 2016 to integrate Dade Moeller’s safety & health, radiation protection, and environmental quality capabilities with NV5’s engineering, infrastructure, and program management resources. Our combined capabilities bring effective solutions to complex issues. Learn more.

Dade Moeller represents both a person and a company. Each member of our staff proudly embraces the scientific standards, integrity, and ethics of the late Dr. Dade W. Moeller, an eminent scientist and educator in the fields of occupational and environmental health.


Our company began operations in 1994 in Richland, Washington (near the U.S. Department of Energy's Hanford Site) with exceptional personal reputations in health physics (radiation protection) and nuclear safety analyses, focusing principally on protecting people and the environment.


We employ more than 150 highly skilled professionals, including Certified Health Physicists, Certified Industrial Hygienists, Certified Safety Professionals, Professional Engineers, and others with environmental and safety certifications and licenses. 

We employ more Certified Health Physicists than any other private entity in the United States.


We have offices in Richland, Washington (HQ); Gaithersburg, Maryland; Oak Ridge, Tennessee; and Las Vegas, Nevada. We also support two long-term contracts from project locations in Cincinnati, Ohio, and Port Allen, Louisiana.


We have advanced degrees and national recognition in our areas of technical expertise. Our close connections with professional societies, prestigious associations, national laboratories, and academia provide us with access and input to the latest technical developments and expert opinions in our fields of endeavor.


We provide experienced consultants and technical field staff to protect people and the environment during operations involving hazardous materials. We support projects at all stages (pre-planning to closure) and of all durations (one day to multi-year).


The enduring tenets of our company are:

  • Mutual respect
  • Professional integrity
  • Client service
  • Operational efficiency

We protect people and the environment by providing high-quality and value-added professionals rooted in sound science and business ethics who deliver exceptional radiation protection and comprehensive safety-related services.


We are a company that will increase in a sustainable manner our market share of safety-related services that protect people and the environment by supporting clients engaged in highly-specialized and uniquely-hazardous operations while continuing to be the premier domestic provider of radiation protection professionals.