• Located in Flagstaff, Tempe, Tucson, Cochise and Las Vegas

Management Staff

Dan Speck

Partner & Shareholder

Dan Speck has spent over 40 years in the mining, materials, and testing industries ranging from mine site engineering to executive management

Dan Vermeer

Partner & Shareholder

Currently, Dan is a Principal in Alta Arizona, which he co-founded with Dan Speck, Dan serves as Managing Partner and Serves on the Board.

John Oliver

Sr. Project Manager / Civil Engineer

John Oliver has over 12 years’ experience performing civil design and project management throughout the Southwestern United States.

Scott Joiner

Principal / Geotechnical Manager

Scott Joiner has over 15 years in the engineering and materials testing industries with varied experience and background.

Sean Fabor, PE

Geotechnical Principal and Director

Sean has over 13 years of experience in the geotechnical, construction material testing and special inspection industry.

Patricia Gajda, RLS


]Patricia has over twenty-two years of professional experience related to land surveying and right-of-way.