Management Staff
David Frenzel, Director, Construction Operations
Mr. Frenzel brings more than 20 years of experience in managing new construction, remodeling, and electrical projects throughout Alaska, Hawaii, Guam, and the western United States; with many sites located in extremely remote and isolated locations. His responsibilities include budgeting, hiring and supervising staff, and managing field construction operations to ensure program objectives are met.
Rebecca Winston, JD, Senior Program Manager
Ms. Winston is a leader with a proven record of accomplishments in planning and leading comprehensive business strategies in support of strategic goals and objectives. She leads a team of construction project managers working in a virtual environment managing projects worldwide for the Second Line of Defense Program for the Department of Energy’s National Nuclear Security Administration.
Ms. Winston earned a JD in Law from the University of Nebraska College of Law and a BS in Education from the Nebraska Wesleyan University.
Chuck Holman, Environmental Program Manager
Mr. Holman brings more than 30 years of experience in consulting, engineering, and construction—including extensive experience in project management, technical management, QA/QC, contracting practices, project controls, and personnel management for both environmental and radiological programs. He is responsible for defining and achieving client, regulatory, and contractor expectations and requirements.
Mr. Holman is a Structural Design graduate from the Healds Institute of Engineering.
Ahtna’s strength lies in the quality of its professional staff. The Ahtna
organizational plan to support a client’s program or project is designed to
assure that sufficient resources are always available and are directed efficiently
at the time and place required. In addition, our organizational structure provides
clear lines of responsibility, authority, communication, and accountability. In
short, the project organization is designed to get the best possible staff assigned
and functioning as a team as quickly as possible upon receipt of notice-to-proceed.
Executive Personnel
Christopher Smith, RG, President and Chief Executive Officer
As President and CEO, Mr. Smith provides distinct vision to the firm’s philosophy, responsibility and dedication to client’s needs and goals. He brings more than 20 years experience managing projects for both the public and private sectors in construction, treatment plant O&M, surface and groundwater hydrology and geology, and HTRW site characterization and remediation.
Mr. Smith earned an MS in Hydrogeology; an MA in Surface Water Hydrology; and a BA in Physical Geography and Environmental Studies from Indiana University, Bloomington. He is a registered geologist in California, Idaho, Indiana, and Oregon.
Z. Dan Graham, PE, Chief Operating Officer
As Vice President and COO, Mr. Graham is responsible for all corporate operations. He brings more than 15 years experience managing government and private sector construction and remediation work. Mr. Graham also serves as Core Program Manager for the Department of Energy $700 million DICCE IDIQ and $240 million DCI IDIQ contract.
Mr. Graham earned a BS in Civil Engineering from Villanova University, Pennsylvania, and is a Registered Professional Civil Engineer in the state of Alaska.
David Fehrenbach, Chief Financial Officer
As CFO, Mr. Fehrenbach brings more than 18 years of experience in project and corporate financial management. His expertise include senior management reporting; budget development; contract administration; scheduling; cash flow tracking and forecasting; review and development of client proposals; and financial management training programs. Mr. Fehrenbach maintains the corporation’s DCAA-approved accounting and procurement system compliant to all Federal regulations and policies.
Mr. Fehrenbach earned an MBA in Finance from the California State University, Fullerton and a BS in Managerial Economics from the University of California, Davis.