Paul Ostapuk is the Arizona director of the Old Spanish Trail Association and a past president of the Glen Canyon Natural History Association. Vast but intimate, remote yet accessible, the land and water features of Glen Canyon provide remarkable opportunities for exploration, adventure and discovery.

Rob Peterson is currently the Chemical Supervisor at the Navajo Generating Station and has worked there for 31 years. He has a B.S. Degree in Chemistry from Arizona State University and specializes in all aspects of water chemistry. He holds the highest level of certification from ADEQ in water treatment operations and distribution with regards to drinking water production. Rob is currently the chair of an international group of power plant chemists organized as the ASME Research Committee on Power Plant and Environmental Chemistry. He has authored and presented over 25 technical papers at power industry meetings and technical conferences. The subjects of his papers include Crystallization, Zero Liquid Discharge, Power Plant Cycle Chemistry, and Turbine Corrosion Damage.

Rob is an avid outdoorsman and photographer who enjoys studying geology, the night sky and the overall ecosystem. He has rowed a raft through the Grand Canyon three times, hiked the Inca Trail, and spent weeks at a time backpacking and camping in Zion NP, Glen Canyon NRA and other areas on the Colorado Plateau.

Wahleah Johns is a member of the Navajo (Dine) tribe and the community of Forest Lake, which is one of several communities atop Black Mesa, Arizona. Wahleah's work with the Black Mesa Water Coalition and Navajo Green Economy Coalition has led to groundbreaking legislative victories for groundwater protection, green jobs and environmental justice.  As vice chair of the Navajo Green Economy Commission, she is developing green economic opportunities in clean energy and traditional economic practices.

Irv Kranzler, a current resident of Greenehaven, Arizona who grew up in Montana, has spent his life in the rocks. After graduating as a Geological Engineer from the Colorado School of Mines in 1954, Irv spent the next ten years traveling around the greater western United States for Shell Oil. In 1963, he struck out on his own as an Independent Geology Consultant and Explorer.

Andy Bessler is the Southwest Tribal Partnership representative for the Sierra Club based in Flagstaff, Arizona.

Born and raised in Colorado, Andy has lived in Flagstaff for the past 10 years. He is a graduate from Northern Arizona University with a MA in applied cultural anthropology with a focus on cultural concepts of boundaries. Before starting work for the Sierra Club in 1999, Andy's work connecting environmental conservation and cultural diversity included sea turtle protection in Central Mexico with the University de Guadalajara and sustainable agriculture in West Africa with Hausa villagers.

His work with the Sierra Club has included three significant environmental/cultural campaigns for the protection of important Native American sacred lands by the shutdown of several mining operations in Arizona and New Mexico. These campaigns included the shutdown of the White Vulcan Pumice Mine to protect the San Francisco Peaks, the Fence Lake Coal Mine to protect Zuni Salt Lake and the Black Mesa Coal Mine to protect Black Mesa.

As the Tribal Partnership Representative for the Sierra Club, Andy continues to explore the important connections with tribal partners for environmental protection and healthy

Gary Scaramazzo has had 12 years of comprehensive public affairs and community service including 10 years as Mayor of Page, AZ; 2 years as President of the Arizona League of Cities and Towns and over 20 years of public education background as instructor and coach at the high school level. He was the Arizona Clean Elections Commissioner, appointed by Governor Napolitano, in 2005. He has worked extensively with the Navajo and Hopi Nations, the National Park Service, the Bureau of Land Management, the State Transportation Board and other agencies and organizations. His contribution to this year's Symposium will be about his direct experience with solar energy projects in the Navajo Nation.