About Us


'Bob Wilkinson'

Bob Wilkinson, President & General Manager (Key Personnel)

Bob Wilkinson served as CEO of Mission Support Alliance prior to leading Hanford Site services in his current role at HMIS. His Hanford experience is vast, including roles in operating nuclear facilities, project management, engineering, emergency response, environmental compliance and more. Bob has an MBA from Eastern Oregon University and is a longtime Tri-Citian. Bob serves on the board for the Washington State STEM Education Foundation and performs other volunteer work with his family. In his off time, Bob and his wife enjoy spending time in the great outdoors, including Bob’s love of camping, fishing and hunting.

'Amy Basche'

Amy Basche, Chief Operations Officer (Key Personnel)

Amy Basche first worked at Hanford as part of the re-start of the 242-A Evaporator Facility. In more than 30 years since, she’s held roles as a training coordinator, manager for Tank Farm contractors and strategic planner. In the last decade, Basche served in a variety of executive management roles. She has an MBA from City University and is a diehard Gonzaga Bulldogs fan. She runs on coffee, enjoys party planning and tracing her ancestry. Basche has been a classroom volunteer for Junior Achievement for more than 20 years and served on the JA Board of Directors for eight years. She also serves on the board for the Tri-City Regional Chamber of Commerce.

'Diane Cato'

Diane Cato, Senior Vice President of Engineering, Projects & Technology (Key Personnel)

After managing engineering activities at both Savannah River and Idaho DOE sites, Diane Cato first worked at Hanford as part of the Tank Farms contract transition. She has more than 30 years of experience in DOE facility engineering and operations and an MBA from NOVA Southeastern University. Cato serves as board president of Safe Harbor Support Center, and she and her husband enjoy traveling in their free time.

'David Chase'

David Chase, Senior Vice President of Safeguards, Security and Emergency Response (Key Personnel)

David Chase is a decorated Army veteran who has served in numerous domestic postings as well as in Germany, Panama, Afghanistan and Iraq. Chase has a master’s degree in public administration from the University of Nevada at Reno. This experience assists in his role overseeing Hanford Patrol, the Hanford Fire Department and Emergency Operations Center. Chase is a history buff and has visited most Civil War battlefields, and made many trips to Little Bighorn. He and his wife have five children and one grandchild.

'Casey DeGroof'

Casey de Groof, Chief of Patrol, Hanford Patrol (Key Personnel)

Casey de Groof first joined Hanford Patrol in 2004, and has served as Chief since 2016. She serves as a battalion commander in the National Guard and previously served as a military intelligence officer in the U.S. Army, where she earned a B.A. in Criminal Justice and an A.A. in Arabic Studies. In her free time, de Groof enjoys traveling, hiking and spending time with family.

'Greg Deweese'

Greg Deweese, Senior Vice President of Business and Contract Administration

Greg Deweese began working on the Hanford Site in the late 1980s, covering Tank Farms and B Plant construction projects to ready the site for the Vitrification Plant. He’s also worked at programs across the DOE complex, include Rocky Flats, Savannah River, Oak Ridge, West Valley, Portsmouth and Paducah, as well as national labs in Idaho and Los Alamos. He received his degree in chemical engineering from Montana State University. Greg enjoys road and mountain biking and camping with his kids and grandkids.

'Todd Eckman'

Todd Eckman, Senior Vice President of Information Management Services

Todd Eckman has spent three decades in the information technology field and “lives, breathes and dreams about IT.” Eckman is a graduate of Perry Technical Institute and supports a number of local non-profits, including Second Harvest, United Way of Benton and Franklin Counties and the Women Helping Women Fund Tri-Cities. He enjoys spending time with his family (including grandchildren and pets), hiking, watching sports and playing pool volleyball.

'Debbie Kelley'

Debbie Kelley, Chief of Staff

Debbie Kelley has nearly 40 years of experience at Hanford supporting all phases of mission support, including her role as chief of staff since 2009. She is one of four generations involved with the Hanford mission, starting with her grandfather’s work on the Manhattan Project in 1943 to her son’s role as a project manager for Washington River Protection Solutions. Debbie enjoys traveling, especially around the northwest, and spending time with family, friends and her dogs.

'Julie Lindstrom'

Julie Lindstrom, Vice President of Workforce Solutions

Julie Lindstrom first started on the Hanford Site more than 25 years ago, beginning as a co-op intern. Her passion is in human resources, where she has served since 2007 in various roles. Julie’s most proud of the diversity and inclusion initiatives she’s helped implement in recent years including the launch of a women’s network intended to empower employees and provide avenues for professional growth. Julie’s mentored many employees through the STEPS program and volunteers her time to job seekers through WorkSource Columbia Basin and Delta High School. Away from work, Julie has coached youth soccer, enjoys snowmobiling, and spending time at their family’s cabin with her husband and two kids. Julie cherishes her role on the board for the Children’s Developmental Center and also enjoys fundraising opportunities for Junior Achievement.

'Mike Pardini'

Mike Pardini, Vice President of Business Integration and Chief Financial Officer

Mike Pardini brings significant experience with project management, strategic planning and business integration to his role at HMIS. He previously worked for another Hanford contractor as a project control and integration manager and most recently served as senior director of site mission integration, under both Mission Support Alliance and HMIS. Mike studied business administration at Seattle Pacific University, close to his beloved Seahawks. In his free time, he enjoys being with his family, coaching soccer and attending games at Lumen Field as one of the 12s.

'Todd Roper'

Todd Roper, Fire Chief, Hanford Fire Department

A Texas transplant, Todd Roper arrived in the Tri-Cities by way of Saudi Arabia, where he had most recently served as fire chief for the Abqaiq Fire Protection Unit, overseeing 250 Saudi nationals. During his time there, the country welcomed its first two women as firefighters. Roper has made emergency management his lifelong passion, attaining a master’s degree in public administration. He and his wife enjoy CrossFit, hiking and paddleboarding.

'Todd Synoground'

Todd Synoground, Senior Vice President of Infrastructure and Site Services (Key Personnel)

Todd Synoground arrived in the Tri-Cities to work as a nuclear chemical operator in the 1980s, following a degree in organizational management from Ashford University. He has vast experience in DOE nuclear and site infrastructure facilities and programs. Synoground’s wife is part of HMIS’ Radiological Assistance Program, and they have two adult children. Synoground is an expert in hunting dogs, owning four certified hunting dogs and earning his own certification in judging and certifying other hunting dogs.

Darci Teel Portrait

Darci Teel, Acting Vice President of Mission Assurance

Darci Teel is a biologist who started at Hanford in Tank Waste Characterization and the Environmental Program. She corroborated the Columbia River Risk Assessment, one of the few projects to consider areas off the Hanford Site and the first to directly involve regional tribes, trustees and universities as partners. Darci’s extensive experience in regulatory compliance frames her collaborative working relationships and management style for successful implementation of Safety Health and Radiation Protection, Environmental, and Quality Assurance. Darci is a past state chair for the Rocky Mountain Elk Foundation, co-founder of Washington Outdoor Women, and currently resides on the board for the local American Red Cross.

'Brian Von Bargen'

Brian Von Bargen, Senior Vice President of Interface & Integration Services (Key Personnel)

Spending more than 30 years working on the Hanford Site, Brian Von Bargen has served in numerous executive positions since graduating with a chemical engineering degree from the University of Idaho, the same school where three of his children have graduated from or currently attend. His decades on the site give him a full view of the spectrum of the One Hanford mission. Von Bargen and his wife make frequent trips to enjoy the Idaho wilderness, visit family or take in a Vandals football game.

'Daryl Witherspoon'

Daryl Witherspoon, Chief Counsel

A North Carolina native, Daryl Witherspoon earned his juris doctorate from Valparaiso and served as a Judge Advocate General in the U.S. Army, with duty stations in the U.S. and abroad, including Germany, Kuwait and Afghanistan. It’s a far cry from Witherspoon’s first job as a school bus driver at age 16! Daryl and his wife have three grown daughters who live on the east coast, and in his free time, Daryl can be found skateboarding or flying drones.


Last Updated 10/18/2021 1:20 PM