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James W. Sewall



The mission of Sewall leadership is to provide the highest value service to our clients and best professional opportunities for our employees.



David T. Edson, LPF, President/Chief Executive Officer

Mr. Edson has dedicated his 43-year professional career to Sewall in successive leadership roles, becoming majority owner and CEO in 2012.  He was instrumental in designing and implementing Sewall’s first geographic information system (GIS) for forestland ownership; diversifying Sewall’s services to include offerings in web-based enterprise GIS, renewable energy and environmental sciences; and expanding the firm’s geographic reach to five continents. He holds a BA in American History from Harvard College and an MS in Forestry from the University of Maine, and is a Licensed Professional

David Stevens, Chief Operating Officer

Mr. Stevens recently returned to Sewall after four years as Executive Director of Organizational Effectiveness at the University of Maine System. He also has 28 years of forestry, project and mill management, and business consulting experience. Besides traditional responsibilities as COO, his unique combination of transition and location leadership experience and decades of leading organizational effectiveness will be employed to assist the CEO in ensuring  proper positioning and alignment of operational units, as well as optimizing systems and processes. He also serves as a senior consultant, and holds an MS degree in Forest Economics from the University of Maine.


Scott Graham, PE, Vice President

Mr. Graham joined Sewall in 1988 with a strong background in construction management. As Vice President, he oversees engineering, survey, environmental science, imaging, and photogrammetry and geospatial services. He holds an AS in Construction Technology from the University of Washington and an AS in Drafting Technology from Northern Maine Technical College in Presque Isle.


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Bret Vicary, PhD, MAI, LPF, CGA, Vice President, Forestry & Natural Resources

Dr. Vicary manages Sewall’s Forestry & Natural Resource Consulting group, serving private, public, and institutional clients throughout North America, Central and South America, Australasia, Europe, and Africa. He has 38 years’ experience, 26 of these at Sewall, as an economist specializing in forest appraisal, investment analysis, management, policy and economics; conservation easements; timber taxation; and litigation.  He has authored articles and seminars on forest valuation, timber inventory, and investment analysis, and is a frequent speaker at timber investment conferences. He is principal author of the NCREIF “Best Appraisal Practices,” and a Faculty Associate at the University of Maine where he received his PhD in Forest Economics and MBA.


Lori Austin, Vice President, Administration

Ms. Austin oversees finance, accounting, and human resource operations at Sewall and acts as its Corporate Secretary. Her 30 years’ experience includes the positions of Corporate Controller and Human Resources Manager; her expertise encompasses systems; organizational strategies and policies; budgeting, forecasting and financial analysis; and financial and human resources regulatory compliance. She earned a BS in Accounting /MIS from Humboldt State University and the University of Maine.



Brian Lippold,, Vice President, Business Development

Mr. Lippold brings to Sewall 30+ years’ experience in planning, engineering, constructing and operating telecommunications networks. He is responsible for developing new opportunities and guiding the expansion of Sewall’s capacity to serve the broadband and telecom sector. His particular focus is on advising municipalities across New England to expand and improve broadband availability. Previously, he held the roles of principal of Casco Bay Advisors, LLC, advising broadband/ telecom clients across New England, and SVP of Network Planning & Engineering at FairPoint Communications for northern New England. He studied engineering at Penn State Univeristy, computer science at the University of Houston, business at Trinity College, and earned a mini-MBA from Wichita State University.


Greg Horne
Information Technology

Senior Consultant – System Integrator Greg Horne has over 20 years’ experience in computer system and network technical design, implementation, integration, maintenance and support. He is the primary technical lead and manager for Sewall's internal IT department. His technical teams support Windows and Unix/Linux based networks and provide the primary customer support for Sewall's hosted systems.  Mr. Horne is actively involved in the day-to-day operation and maintenance of Dell, HP and IBM Servers, and Cisco based networks.  He attended Charleston Southern University’s Business Bachelor of Science Program/Information Systems; Trident Technical College’s AutoCAD Program; and the College of Charleston.

Board of Directors


David T. Edson, LPF

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Bret Vicary, PhD, MAI, LPF, CGA
Vice President





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