Susan Winslow

Susan L. Winslow


Susan governs our day-to-day operations, including client services, infrastructure, and business development activities. She leads efforts to develop and implement our business strategies, objectives, and priorities. Her single goal is to manage and achieve our vision in an ethical and safe manner. Susan has more than 28 years of experience in the management of environment, safety, and health (ES&H)-related programs, projects, and personnel. She has distinguished herself in the innovative application of risk management to decision processes and is a strategic thinker and team builder.

Bill Stanley

Bill Stanley

Vice President, Business Development

Bill is responsible for identifying, prioritizing, and managing new business pursuits; planning and implementing strategic objectives; and interacting with other companies, Federal agencies, and commercial clients on major business development initiatives. He has more than 25 years of experience in the technical, construction, and environmental professions. His technical accomplishments include environmental processes, from initial characterization through remediation and site closeout, and the evaluation and use of innovative technologies for environmental applications. He is experienced with a variety of contaminants such as hazardous waste, radioactive waste, mixed waste, and unexploded ordnance in soils, bedrock, and ground water. Bill has managed programmatic budgets of more than $100M annually and project budgets up to $15M annually. 

Ellen Wright

Ellen Messer Wright, CHP

Vice President, Environment, Safety & Health

Ellen oversees our Radiological, Safety, Industrial Hygiene, Training, and Environmental business operations. She is also responsible for the coordination of our support to the Hanford Mission Support contract. Ellen works with the Director to implement operational priorities and to identify and develop new business opportunities. She manages the ES&H Division's billable time sold, staffing, and resource optimization to ensure the delivery of high quality services and optimal performance. She is also a Certified Health Physicist (CHP) with 27 years of worker protection-related experience assisting clients with worker safety and health, radiation protection program development, radiological assessments, radiological training, and application of governing regulations and standards. Ellen has extensive historic and site-wide familiarity with radiation protection and S&H at the Hanford Site, having supported many of the previous prime contractors including Westinghouse Hanford Company, Fluor Hanford, Bechtel Hanford, Inc., CH2M HILL Hanford Group, and current contracts Pacific Northwest National Laboratory, Waste Treatment Plant, Mission Support, Plateau Remediation, and Tank Operations.

Tracey Shinsato Professional Photo

Tracey Shinsato

Vice President, NIOSH Operations and Support Services

Tracey is responsible for coordinating the activities of records staff, quality reviewers, data support staff, and technical editing staff in Richland and Las Vegas. She also oversees the marketing and graphics support group. Tracey makes resource recommendations to support workflow within the division and with other divisions, encourages employee growth through professional development, resolves employee and staffing issues, manages the division budget, manages the NIOSH Project budget and schedules, and ensures adherence to deadlines.  She has more than 22 years of operational management and leadership experience and is well-versed in federal and state employment requirements. 

Mitzi Miller

Mitzi Miller

Vice President, Environmental Programs

Mitzi is responsible for identifying, planning, and managing environmental projects related to remediation, data validation, and laboratory quality improvements. She is an environmental chemist and a highly experienced project manager with expertise in analytical chemistry and quality programs for environmental, materials, food, and drug applications. She has 36 years of experience in analytical laboratory assessments and data quality audits and assessments. She is a State-approved TNI lead assessor, and a lead ISO 17025 assessor. She leads a team of laboratory consultants and professionals to assist laboratories in upgrading or establishing credentials for accreditation and assists in legal cases. She has extensive expertise in data validation using national guidelines and in developing unique project specific data assessment criteria.

Alan Fellman, Ph.D., CHP

Alan Fellman, PhD, CHP

Manager, Commercial Radiological Programs

As Manager of Commercial Radiological Programs, Alan leads our commercial radiation safety audit, naturally occurring radioactive material (NORM), and litigation support programs. Alan’s career in health physics has been focused in the areas of environmental radioactivity, radiation measurements, regulatory compliance, and education. He has extensive experience performing radiological site characterizations and risk assessments as well as assisting radioactive materials licensees with their radiation safety programs, including preparation of license applications, radiation safety manuals, standard operating procedures, and decommissioning funding plans. He performs regulatory compliance audits and presents training at the Dade Moeller Training Academy and client sites.


Tracy Ikenberry, CHP

Manager, Radiological Consulting

Tracy leads a group of experienced and highly qualified health physicists with expertise in all areas of radiation protection. Like many in this group he is also a Certified Health Physicist (CHP). For more than 30 years, Tracy has been involved in radiological assessment and problem-solving in all areas of environmental and occupational radiation safety. He has extensive experience consulting and assessing radiological programs and problems at Department of Energy (DOE) national laboratories and facilities, as well as for commercial clients across various industries that successfully use radiation and radioactive material. Tracy also has more than 20 years of experience in the management of national and international consensus standards development for radiation protection.


Matt Smith

Manager, Dade Moeller Training Academy

Matt manages the Dade Moeller Training Academy's classroom and online training courses,  in addition to customized training courses provided under contract at client sites. He has supported more than 200 training courses for the U.S. Customs and Border Protection, U.S. Department of Energy Second Line of Defense Program, and the U.S. State Department. As part of Second Line of Defense, he has provided instruction on the use of radiation survey devices, hand-held radioisotope identifiers, and radiation portal monitor systems. Matt also has provided non-ionizing radiation expertise for the National Labs, U.S. Department of Defense, National Aeronautics and Space Administration's Jet Propulsion Laboratory, and several commercial clients.

Kevin Groppe, PE

Manager, NEPA Projects

Kevin has 17 years of experience in the environmental consulting field, focusing on the National Environmental Policy Act (NEPA), pollution prevention, and environmental compliance. He has worked on NEPA documents for public and private-sector clients, including the U.S. Department of Energy, Air National Guard, Federal Energy Regulatory Commission, New York Power Authority, Exxon, and Nextel, evaluating a range of projects. A Professional Engineer, Kevin earned his bachelor of science degree in chemical engineering from Johns Hopkins University and his master of science degree in environmental engineering from Stanford University.