• Mark L. Johnson

Meet The Core Team

Updated: Aug 2



The Tortolita Alliance was formed by five community-active individuals with diverse backgrounds. The first meeting took place on 10/28/19 over coffee. In a very short time, we've had three Core Team meetings, developed the website, gave presentations to the Del Webb Dove Mountain and Highlands communities, coordinated attendance at the Marana Planning Commission & Town Council Hearings, began work with Action Group volunteers and more.


We are fortunate to have such an energetic and collaborative group. Please meet the Core Team!



Dave Barker

Dave Barker is a resident of the Highlands and moved to the area in 2014.

His professional career consisted of management positions at two seasonal resorts in UT, then switched to instructing fifth graders. Dave has two Bachelor’s degrees; one in business from Westminster College, Salt Lake City, the other in elementary education earned from Utah State University in Logan, UT.


He is an active hiker, trail runner, and bicyclist (road and mountain). Dave serves on the Board of the Board of Friends of Ironwood Forest, a non-profit group devoted to the preservation of the Ironwood Forest National Monument.


Tom Hannagan

Tom Hannagan is a resident of the Highlands and has been active in the Town of Marana since 2006. He retired from the banking industry, working with quantitative models of risk-based financial management. Tom has published works in the Journal of Risk Management and the Journal of Financial Accounting. He has degrees in Finance and Economics from the University of Illinois.


Tom is active with the Highlands Hiking Club and the Dove Mountain Hikers, and also enjoys golf along with road and mountain biking. He is President of the Board of Friends of Ironwood Forest, a non-profit group devoted to the preservation of the Ironwood Forest National Monument.



Mark Johnson

Mark Johnson is a resident of Del Webb Dove Mountain and moved to the area from La Quinta, CA in July, 2019.

Mark retired in late 2016 after a 40-year career in the water utility industry, most recently serving as Director of Engineering for the Coachella Valley Water District. He has a Bachelor’s and Master’s degree in Civil/Environmental Engineering.


Mark is and avid hiker and golfer and community volunteer. He received the Pillar of the Community award from the City of La Quinta in 2019.




Alyssa Page

Community activist, focusing on public involvement and education regarding natural open space, well-balanced design in development and water policy. Beginning in the fall of 2017, she pursued understanding the many different facets of urban growth and natural resource conservation in the NW Tucson metropolitan area. Topics researched include; Arizona Preserve Initiative (API),  Arizona State Land Department, Oro Valley’s Environmentally Sensitive Lands Ordinance (ESLO), water policy, storm water conservation techniques, development trends, Make Marana 2040 General Plan and local politics. 

Alyssa attended Brigham Young University, and has a Bachelors of Fine Arts degree in Photographic design, with a minor in Communications. Alyssa’s training has helped her to be able to communicate with others whether in visual or literary forms.  Alyssa’s teaching background has been helpful in community outreach and and community education. Previous to moving to Arizona, she enjoyed teaching photography at Utah Valley University, Brigham Young University and Oklahoma City Community College.  

When not working on the issues above, she is the mother of four busy children and wife to Jay Page. The Page family has been in Arizona for about ten years.


Jim Tripp

Jim Tripp is a resident of Sky Ranch and moved to the area in 2017. He has a Bachelor’s degree in Biological Sciences from Cornell University and a Ph.D. in Molecular and Cellular Biology from Oregon State University. Prior to retirement, Jim was employed as a Federal Regulations Analyst for Wisconsin Power and Light and as a Research Scientist at UC Santa Cruz and Berkeley National Labs. He has over 30 scientific publications to his credit. 


Jim has actively participated in public meetings and hearings relating to all aspects of Arizona State Land Department development in Oro Valley and Marana. He has published several opinion pieces in the Let Oro Valley Excel blog, and in the Your Voice column of Tucson Local News.

© 2019 by the Tortolita Alliance