Contact Information

Northern Arizona University
School of Earth Sciences and Environmental Sustainability
525 S Beaver St.
PO Box: 5694Flagstaff  AZ  86011  Chemistry - (Bldg #20) Room #124
Phone: 928-523-9333
Fax: 928-523-7423

GLG Office Phone: 928-523-4561
GLG Office Fax: 928-523-9220

Paul Umhoefer

Director and Professor

Sarah Colby

Business Manager, Sr.

Robert Lenegan

Lab Manager

Tony Wolkowinsky

Laboratory Supplies Controller

Brenda Campbell

Administrative Associate
Environmental Sciences Program
Climate Sciences and Solutions Program

Tracy Tiedemann

Administrative Associate, Geology Program