CENTRAL STAFF
Chris Potter, Chief Scientist
Email: cpotter@usgs.gov
Phone: 303-236-1735
Ed Johnson, Associate Chief Scientist
Email: ejohnson@usgs.gov
Phone: 303-236-4857
Christa Lopez, Team Assistant
Email: clopez@usgs.gov
Phone: 303-236-1644
Nancy Williams, Administrative Officer
Email: nwilliams@usgs.gov
Phone: 303-236-1648
Mailing Address
Denver Federal Center, MS 939
P.O. Box 25046
Denver, CO 80225
Telefax #: 303-236-5888