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Open-File Report 2009-1154

In cooperation with the Bureau of Indian Affairs

Results and Interpretations of U.S. Geological Survey Data Collected in and around the Tuba City Open Dump, Arizona

By Raymond H. Johnson, James K. Otton, and Robert J. Horton

Thumbnail of cover and link to report PDF (74.2 MB)


This Open-File Report was originally an Administrative Report presentation to the Bureau of Indian Affairs based on U.S. Geological Survey data that has been collected and presented in four previous reports (Open-File Reports 2009-1020, 2008-1380, and 2008-1374, and an Administrative Report on geophysical data). This presentation was given at a technical meeting requested by the BIA on March 3 and 4, 2009, in Phoenix, Arizona. The idea for this meeting was for all the technical people working on issues related to the Tuba City Open Dump site to come together and share their data collection procedures, results, interpretations, and working hypotheses. The meeting goal was to have a clear record of each party’s interpretations and a summary of additional data that would be needed to solve differences of opinion.

The intention of this presentation is not to provide an exhaustive summary of U.S. Geological Survey efforts at the Tuba City Open Dump site given in the four previously published Open-File Reports listed above, since these reports have already been made available. This presentation briefly summarizes the data collected for those reports and provides results, interpretations, and working hypotheses relating to the data available in these reports.

The major questions about the Tuba City Open Dump addressed by the U.S. Geological Survey are (1) what are the sources for uranium and other constituents found in the ground water in and around the Tuba City Open Dump, (2) what is the current distribution of ground water contaminants away from the Tuba City Open Dump (can plume limits be delineated), and (3) what controls the mobility of uranium and other constituents in and around the Tuba City Open Dump? Data collection, results, and interpretations by the U.S. Geological Survey that address these questions are presented herein.

First posted August 4, 2009

For additional information contact:

Team Chief Scientist,
USGS Crustal Imaging and Characterization
Box 25046, Mail Stop 964
Denver, CO 80225

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Johnson, R.H., Otton, J.K., and Horton, R.J., 2009, Results and interpretations of U.S. Geological Survey data collected in and around the Tuba City Open Dump, Arizona: U.S. Geological Survey Open-File Report 2009–1154, 125 p.

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