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.
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.
Diane Yancey, Finance Manager
Ms. Diane Yancey has more than 19 years of experience in operations finance, with particular emphasis on detailed cost tracking and controls of large, complex programs and projects. Her experience is comprised of cost management, procurement, program management, and marketing in the design/build construction, communications, and technology industries.
As Ahtna’s Finance Manager, Ms. Yancey directs and coordinates the firm’s financial activities in conjunction with operations and corporate policy. She earned her BS in Business Administration from California State University, San Jose.
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
Roger Wykle, PE, CFM, PMP, LEED AP, Vice President and Chief Operations Officer
As Vice President and Chief Operations Officer, Mr. Wykle is responsible for the daily management and development of 100 personnel accomplishing major international, nationwide, regional, and local multi-million dollar contracts for various government agencies and the private sector. Project types include multi-faceted environmental remediation, civil, and general construction, marine construction, and facility improvements. For all projects, Mr. Wykle places a major emphasis on safety and providing a complete staff of qualified and highly motivated project managers/engineers, technicians, equipment, accounting, and support personnel to provide quality services to AGSC clients.
Mr. Wykle earned an MBA from Old Dominion University, a MS in Civil Engineering from the University of Illinois, and a BS in Civil Engineering from the US Coast Guard Academy. He is a Registered Professional Civil Engineer in the state of California.
David Fehrenbach, Chief Financial Officer
As CFO, Mr. Fehrenbach brings more than 19 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.